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Network+ N10-005 > Topic 1: Networking Concepts > Flashcards

Topic 1: Networking Concepts Flashcards

1
Q 
A user’s laptop is unable to keep a stable network connection. Which of the following measures would MOST likely need to be configured?
A. SSID name
B. WAP encryption strength
C. WAP radio power
D. Channel overlay
A

Answer: C
Explanation: WAP radio power is the signal strength through which you can specify the range from which you can stay connected to the network and access internet. Here, when the user is not able to maintain a stable connection then it is a problem with the signal strength for sure so you can try to increase the signal strength by increasing the radio power.

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2
Q 
The Network Interface Layer of the TCP/IP model corresponds to which of the following layers of the OSI model? (Select TWO).
A. Network
B. Session
C. Transport
D. Physical
E. Data link
A

Answer: D,E
Explanation:
The network layer is responsible for packet forwarding including routing through intermediate routers, whereas the data link layer is responsible for media access control, flow control and error checking.

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3
Q 
In which of the following layers of the OSI model would MAC addressing be found?
A. Network
B. Application
C. Data Link
D. Transport
A

Answer: C
Explanation:
The ITU-T G.hn standard, which provides high-speed local area networking over existing wires (power lines, phone lines and coaxial cables), includes a complete data link layer which provides both error correction and flow control by means of a selective repeat Sliding Window Protocol.

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4
Q 
Several users from the finance department report that they are able to access the Internet, but unable to connect to their financial applications. The network technician is unable to ping the finance server. The technician decides to check the switch and determines that Internet access is working. Which of the following is a possible cause of the access issues?
A. Faulty cable
B. Remote management disabled
C. Improper VLAN assignment
D. Mismatched duplex
A

Answer: C
Explanation: Finance Server is placed in same VLAN which is assigned to finance users if they are able to access internet that’s means connectivity to switch is good, so we have to check the VLAN assigned to users.

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5
Q 
A technician needs to ensure that traffic from a specific department is separated within several switches. Which of the following needs to be configured on the switch to separate the traffic?
A. Duplex settings
B. SNMP string
C. VLAN assignments
D. Spanning tree
A

Answer: C
Explanation: A VLAN is a group of end stations with a common set of requirements, independent of physical location. VLANs have the same attributes as a physical LAN but allow you to group end stations even if they are not located physically on the same LAN segment.

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6
Q 
Given a subnet mask of 255.255.255.0, how many usable IP addresses would be in that subnet?
A. 250
B. 254
C. 255
D. 256
A 
Answer: B
Explanation: The Subnet Mask however, determines the "class" of a Network. 255.255.255.0 is a "Class C" network.A class c network can host up to 254 pc's
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7
Q 
On which of the following OSI model layers would a MAC address be used?
A. Network
B. Data Link
C. Transport
D. Physical
A

Answer: B
Explanation:
The ITU-T G.hn standard, which provides high-speed local area networking over existing wires (power lines, phone lines and coaxial cables), includes a complete data link layer which provides both error correction and flow control by means of a selective repeat Sliding Window Protocol.

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8
Q 
Joe, a user, has a computer that has a link light on his network interface card (NIC); however, Joe is unable to access the Internet. Which of the following is the cause of this issue?
A. Faulty GBIC
B. Faulty SFP
C. Cable is a crossover
D. VLAN mismatch
A

Answer: D
Explanation:
As user has link light on NIC that means he has connectivity with switch so he need to check his vlan assignment.

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9
Q 
A network technician is troubleshooting signal problems with certain WAPs in an office and finds consistently high ping times across the units. Such an issue is called which of the following?
A. Latency
B. Attenuation
C. Crosstalk
D. Frequency hopping
A

Answer: A
Explanation:
During the high ping time users are using most of the bandwidth that causes latency so signal strength get affected by this.

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10
Q 
Which of the following TCP/IP model layers does the OSI model Presentation layer map to?
A. Transport
B. Internet
C. Application
D. Network Interface
A

Answer: C
Explanation:
The Application layer provides applications the ability to access the services of the other layers and defines the protocols that applications use to exchange data. There are many Application layer protocols and new protocols are always being developed.

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11
Q 
A customer wants to keep cost to a minimum and has only ordered a single static IP address from the ISP. Which of the following must be configured on the router to allow for all the computers to share the same public IP address?
A. VLANs
B. PoE
C. PAT
D. VPN
A

Answer: C
Explanation:
Port Address Translation (PAT), is an extension to network address translation (NAT) that permits multiple devices on a local area network (LAN) to be mapped to a single public IP address. The goal of PAT is to conserve IP addresses.

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12
Q 
Which of the following LAN technologies is used to provide a MAXIMUM bandwidth of 1Gbps through singlemode fiber?
A. 10GBaseLR
B. 100BaseFX
C. 100BaseTX
D. 1000BaseX
A

Answer: D
Explanation:
1000BaseX identifies various Gigabit Ethernet physical layer standards as defined in IEEE802.3z, such as 1000BaseLX, 1000BaseSX, 1000BaseCX and 1000BaseLH. Basically, all standards
included in 1000BaseX uses 8B/10B coding scheme with 8 bits of data and 2 bits of errorcorrection data. Each specification allows various cable (fiber or copper) lengths, and uses different cable media.

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13
Q 
Which of the following properties of DHCP would a technician use to ensure an IP address is not leased out from the active scope?
A. Reservations
B. Lease times
C. Removing IPs from the active leases
D. Configuring the DNS options
A

Answer: A
Explanation:
Reservations are permanent lease assignments that are used to ensure that a specified client on a subnet can always use the same IP address. You can use DHCP reservations for hosts that require a consistent IP address, but do not need to be statically configured.

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14
Q 
Spanning-Tree Protocol is used with which of the following network devices?
A. Router
B. NIC
C. Switch
D. DHCP server
A

Answer: C
Explanation:
Spanning Tree Protocol (STP) is a Layer 2 protocol that runs on bridges and switches. The specification for STP is IEEE 802.1D. The main purpose of STP is to ensure that you do not create loops when you have redundant paths in your network. Loops are deadly to a network.

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15
Q 
A technician wants to separate networks on a switch. Which of the following should be configured to allow this?
A. VLAN
B. Trunking
C. Spanning tree
D. Traffic filtering
A

Answer: A
Explanation:
A VLAN is a group of end stations in a switched network that is logically segmented by function, project team, or application, without regard to the physical locations of the users. VLANs have the same attributes as physical LANs, but you can group end stations even if they are not physically located on the same LAN segment.

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16
Q 
A user wants to connect seven PCs together for a game night. Which of the following should the user install to help with this task?
A. Media convertor
B. Switch
C. Firewall
D. Bridge
A

Answer: B
Explanation:
They connect multiple PCs, printers, servers and other hardware. Switches allow you to send information, such as email, and access shared resources, including printers, in a smooth, efficient, and transparent manner.

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17
Q 
Which of the following defines the amount of time a host retains a specific IP address before it is renewed or released?
A. DHCP lease
B. DNS suffix
C. Subnet mask
D. DHCP reservation
A

Answer: A
Explanation:
By default, each IP address assigned by a DHCP Server comes with a one-day lease, which is the amount of time that the address is valid.

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18
Q 
Users are reporting that some Internet websites are not accessible anymore. Which of the following will allow the network administrator to quickly isolate the remote router that is causing the network communication issue, so that the problem can be reported to the appropriate responsible party?
A. Ping
B. Protocol analyzer
C. Tracert
D. Dig
A

Answer: C
Explanation:
Tracet command will tell the administrator which route is not present or which is present so he will come to know whether he has appropriate route or not.

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19
Q 
Ann, a new user, has a workstation that has connectivity to the printer located in her department, but cannot access the Internet. The result of an ipconfig command on Ann’s workstation is as follows:
IP address: 192.168.0.124
Subnet Mask: 255.255.255.128
Default Gateway: 192.168.0.254
Which is MOST likely preventing the user from accessing the Internet?
A. Duplicate IP address
B. Incorrect gateway
C. Incorrect VLAN
D. Bad switch port
A

Answer: B
Explanation:
We usually give default gateway as an end device which is directly connected with ISP so in this case user has lost his connectivity with due to wrong default gateway configured.

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20
Q 
Which of the following is the common port used for IMAP?
A. 25
B. 53
C. 143
D. 443
A

Answer: C
Explanation:
The Internet Message Access Protocol (commonly known as IMAP) is an Application Layer Internet protocol that allows an e-mail client to access e-mail on a remote mail server. The current version, IMAP version 4 revision 1 (IMAP4rev1), is defined by RFC 3501. An IMAP server typically listens on well-known port 143

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21
Q 
Which of the following network protocols is used to resolve FQDNs to IP addresses?
A. DNS
B. FTP
C. DHCP
D. APIPA
A

Answer: A
Explanation:
An Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they’re easier to remember. The Internet however, is really based on IP addresses. Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. For example, the domain name www.example.com might translate to 198.105.232.4.

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22
Q 
Which of the following network protocols is used to transport email between servers?
A. IMAP4
B. POP3
C. SNMP
D. SMTP
A

Answer: D
Explanation:
While electronic mail servers and other mail transfer agents use SMTP to send and receive mail messages, user-level client mail applications typically use SMTP only for sending messages to a mail server for relaying

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23
Q

Ann, a technician, installs a new WAP and users are able to connect; however, users cannot access the Internet. Which of the following is the MOST likely cause of the problem?
A. The signal strength has been degraded and latency is increasing hop count.
B. An incorrect subnet mask has been entered in the WAP configuration.
C. The signal strength has been degraded and packets are being lost.
D. Users have specified the wrong encryption type and routes are being rejected.

A

Answer: B
Explanation:
Due to wrong subnet entered user is unable to communicate with anyone so to communicate he needs to be in right subnet.

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24
Q 
Users have reported issues accessing an Internet website. The network technician wants to verify network layer connectivity. Which of the following tools can provide the verification?
A. ping
B. netstat
C. route
D. arp
A

Answer: A
Explanation:
Ping is a computer network administration utility used to test the reachability of a host on an Internet Protocol (IP) network and to measure the round-trip time for messages sent from the originating host to a destination computer.

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25
Q 
Which of the following is the FASTEST Ethernet technology?
A. 10GBaseSR
B. 10BaseT
C. 100BaseFX
D. 1000BaseT
A

Answer: A
Explanation:
10GBASE-SR (“short range”) is a port type for multi-mode fiber and uses 850 nm lasers. Its Physical Coding Sublayer 64b/66b PCS is defined in IEEE 802.3 Clause 49 and its Physical Medium Dependent PMD in Clause 52. It delivers serialized data at a line rate of 10.3125 Gbit/s.

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26
Q 
Network upgrades have been completed and the WINS server was shutdown. It was decided that NetBIOS network traffic will no longer be permitted. Which of the following will accomplish this objective?
A. Content filtering
B. Port filtering
C. MAC filtering
D. IP filtering
A

Answer: B
Explanation: TCP/IP port filtering is the practice of selectively enabling or disabling Transmission Control Protocol (TCP) ports and User Datagram Protocol (UDP) ports on computers or network devices. When used in conjunction with other security practices, such as deploying firewall software at your Internet access point, applying port filters to intranet and Internet servers insulates those servers from many TCP/IP-based security attacks, including internal attacks by malicious users.

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27
Q 
Companies trying to cut down on constant documentation of IP addresses could use which of the following?
A. Longer lease times
B. More reservations
C. Larger scopes
D. Dynamic IP addressing
A

Answer: D
Explanation:
In Dynamic IP addressing all the hosts with private ip address will be patted to the same ip so the administrator will not have to keep track of each and every host with private ip mapped to a static public ip address.

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28
Q 
Which of the following DHCP properties defines the size of the pool of available IP addresses?
A. Options
B. Scope
C. Leases
D. Reservations
A

Answer: B
Explanation:
A range of IP addresses that are available to be leased to DHCP clients by the DHCP Server service.

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29
Q 
Which of the following protocols works at the LOWEST layer of the OSI model?
A. L2TP
B. PPTP
C. ISAKMP
D. IPSec
A

Answer: A
Explanation:
Layer Two Tunneling Protocol (L2TP) is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by an Internet service provider (ISP) to enable the operation of a virtual private network (VPN) over the Internet.

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30
Q 
An employee connects to a work computer from home via the built-in Windows remote desktop connection. Which of the following is MOST likely being used to establish the connection?
A. RDP
B. RTP
C. RIP
D. RAS
A

Answer: A
Explanation:
Remote Desktop Protocol (RDP) is a proprietary protocol developed by Microsoft, which provides a user with a graphical interface to connect to another computer over a network connection. The user employs RDP client software for this purpose, while the other computer must run RDP server software.

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31
Q 
Discover, Offer, Request, and Acknowledge are the steps for which of the following protocols?
A. DNS
B. DOS
C. DHCP
D. DSL
A

Answer: C
Explanation:
when we install a dhcp server into our network then dhcp server works on the basis of dora process first dhcp server sends a hello message in to the network to discover the clients pc and when any client pc found in the network then, dhcp server offers the IP to client pc. When client pc selects any IP from dhcp server then client pc request for selected IP to dhcp server then dhcp server provide that IP to client pc and both send ackonledgement to each other.

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32
Q 
Which of the following commands displays the routing table on a server or workstation?
A. nbtstat
B. route
C. traceroute
D. nmap
A

Answer: B
Explanation:
The route command allows you to make manual entries into the network routing tables. The route command distinguishes between routes to hosts …

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33
Q 
At which of the following layers of the OSI model does ASCII work?
A. Session
B. Transport
C. Presentation
D. Application
A

Answer: C
Explanation:
The presentation layer is responsible for the delivery and formatting of information to the
application layer for further processing or display. It relieves the application layer of concern regarding syntactical differences in data representation within the end-user systems. An example of a presentation service would be the conversion of an EBCDIC-coded text computer file to an ASCII-coded file.

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34
Q 
Which of the following uses port 23 by default?
A. TELNET
B. IMAP
C. FTP
D. SNMP
A

Answer: A
Explanation:
Telnet is a network protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. User data is interspersed in-band with Telnet control information in an 8-bit byte oriented data connection over the Transmission Control Protocol (TCP).

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35
Q 
Assigning the same IP address to a network device is which of the following?
A. SSID
B. Scope
C. Reservation
D. Lease
A

Answer: C
Explanation:
You might want to assign network printers and certain servers DHCP reservations to ensure that they always have the same IP address, but continue to receive updated configuration information from the DHCP server. For example, create reservations for servers that must always have the same IP address.

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36
Q 
At which of the following layers do frames exist? (Select TWO).
A. OSI model Data link layer
B. TCP/IP model Network Interface layer
C. OSI model Physical layer
D. OSI model Network layer
E. TCP/IP model Internet layer
A

Answer: A,B
Explanation:
The data link layer is concerned with local delivery of frames between devices on the same LAN. Data-link frames, as these protocol data units are called, do not cross the boundaries of a local network. Inter-network routing and global addressing are higher layer functions, allowing data-link
protocols to focus on local delivery, addressing, and media arbitration. In this way, the data link layer is analogous to a neighborhood traffic cop; it endeavors to arbitrate between parties contending for access to a medium, without concern for their ultimate destination.

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37
Q

A user is unable to access any network resources. The IP configuration of the workstation is as follows:
IP Address: 192.168.10.32
Subnet Mask: 255.255.255.240
Default Gateway: 192.168.10.46
Which of the following would allow the user to connect to network resources?
A. Change the default gateway to 192.168.10.1
B. Change the default gateway to 192.168.10.254
C. Change the IP address to 192.168.10.31
D. Change the IP address to 192.168.10.33

A

Answer: D
Explanation:
The given ip address is network id which we don’t assign to the host so the next ip is applicable to this.

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38
Q 
Which of the following DNS records is used to identify a domain’s SMTP server?
A. CNAME
B. PTR
C. MX
D. A
A

Answer: C
Explanation:
A mail exchanger record (MX record) is a type of resource record in the Domain Name System that specifies a mail server responsible for accepting email messages on behalf of a recipient’s domain, and a preference value used to prioritize mail delivery if multiple mail servers are available. The set of MX records of a domain name specifies how email should be routed with the Simple Mail Transfer Protocol (SMTP).

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39
Q 
Which of the following TCP ports are used by FTP? (Select TWO).
A. 20
B. 21
C. 22
D. 23
E. 25
F. 80
A

Answer: A,B
Explanation:
FTP uses two ports by default: 21 for sending commands, and 20 for sending data. For instance if you said “FTP “ it would make the attempt using port 21. If the session was established, port 20 would be using for the data. NotE. These are the default ports which is what I assume you were asking. A server administrator can however configure FTP to use whatever port he defines.

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40
Q 
Which of the following protocols is MOST commonly used for the transfer of router configuration files?
A. SSL
B. TFTP
C. DNS
D. IMAP
A

Answer: B
Explanation:
Trivial File Transfer Protocol (TFTP) is a file transfer protocol notable for its simplicity. It is generally used for automated transfer of configuration or boot files between machines in a local environment. Compared to FTP, TFTP is extremely limited, providing no authentication, and is rarely used interactively by a user.

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41
Q 
Which of the following protocols resolves IP addresses to MAC addresses?
A. DNS
B. ARP
C. RARP
D. NTP
A

Answer: B
Explanation:
ARP is used to convert an IP address to a physical address such as an Ethernet address. ARP has been implemented with many combinations of network and data link layer technologies, such as IPv4, Chaosnet, DECnet and Xerox PARC Universal Packet (PUP) using IEEE 802 standards, FDDI, X.25, Frame Relay and Asynchronous Transfer Mode (ATM). IPv4 over IEEE 802.3 and IEEE 802.11 is the most common case.

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42
Q 
Which of the following port numbers is used for SNMP?
A. 61
B. 151
C. 161
D. 1611
A

Answer: C
Explanation:
Simple Network Management Protocol (SNMP) is an “Internet-standard protocol for managing devices on IP networks”. Devices that typically support SNMP include routers, switches, servers, workstations, printers, modem racks, UPSes and more. It is used mostly in network management systems to monitor network-attached devices for conditions that warrant administrative attention.

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43
Q

Which of the following is the definition of a DNS server?
A. Hosts proprietary business applications
B. Translates FQDN’s to IP addresses
C. Provides network IDS/IPS security
D. Assigns IP addresses to network devices

A

Answer: B
Explanation:
Domain Name System (DNS) is the name resolution protocol for TCP/IP networks, such as the Internet. Client computers query a DNS server to resolve memorable, alphanumeric DNS names to the IP addresses that computers use to communicate with each other.

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44
Q 
Which of the following features can BEST be used to facilitate authorized remote access to a network?
A. VPN concentrator
B. Proxy server
C. Content filter
D. Load balancer
A

Answer: A
Explanation:
The VPN Concentrator is used for Remote Access VPN’s. In typical use, a Remote Access VPN allows users to use an encrypted tunnel to securely access a corporate or other network via the
Internet.

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45
Q 
Which of the following is a Class A IP address?
A. 10.4.0.1
B. 169.254.0.1
C. 192.168.0.1
D. 254.200.0.1
A

Answer: A
Explanation:
Class A ip address ranges from 10.0.0.0 to 10.255.255.255

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46
Q 
A network where all traffic feeds through a centralized gateway uses which of the following topologies?
A. Peer-to-peer
B. Ring
C. Bus
D. Star
A

Answer: D
Explanation:
A bus topology is a type of network setup where each computer and network device is connected to a single cable or backbone.

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47
Q 
In order to limit the number of dynamic addresses of hosts on a network, which of the following can be implemented?
A. Scope options
B. Leases
C. Reservations
D. DNS suffixes
A

Answer: A

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48
Q 
Which of the following IP address/subnet mask combinations represent a broadcast address? (Select TWO).
A. 200.200.100.0/28
B. 200.200.100.32/27
C. 200.200.100.63/27
D. 200.200.100.79/27
E. 200.200.100.95/27
F. 200.200.100.254/30
A

Answer: C,E
Explanation:
A broadcast address is a logical address at which all devices connected to a multiple-access communications network are enabled to receive datagrams. A message sent to a broadcast address is typically received by all network-attached hosts, rather than by a specific host.

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49
Q 
Which of the following networking devices can exist at several layers of the OSI model at the same time? (Select TWO).
A. Switch
B. Cable
C. Repeater
D. Router
E. Bridge
F. Hub
A

Answer: A,D
Explanation:
A Multilayer Switch and Router work from OSI layer 2, 3 or 4 to IP DSCP (if IP packet) and/or VLAN IEEE 802.1p.

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50
Q 
Which of the following is a path vector routing protocol?
A. RIP
B. EIGRP
C. ISIS
D. OSPF
E. BGP
A

Answer: E
Explanation:
Because BGP involves a table of IP networks or “prefixes” which designate network reachability among autonomous systems (AS).

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51
Q 
Which of the following routing protocols utilizes the DUAL algorithm for determining best path?
A. EIGRP
B. RIPv2
C. OSPF
D. RIP
A

Answer: A
Explanation: Diffusing Update Algorithm guarantees loop-free operation and provides a mechanism for fast convergence.

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52
Q 
The network interface layer of the TCP/IP model corresponds with which of the following layers of the OSI model? (Select TWO).
A. Transport layer
B. Network layer
C. Session layer
D. Physical layer
E. Presentation layer
F. Data link layer
A

Answer: D,F
Explanation:
The lowest layer of the OSI Reference Model is the physical layer, which is responsible for the “nitty gritty” details of transmitting information from one place to another on a network. The layer just above the physical layer is the data link layer, called the network interface layer or just the link layer in the TCP/IP architectural model. Its primary job is to implement networks at the local level, and to interface between the hardware-oriented physical layer, and the more abstract, software oriented functions of the network layer and those above it.

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53
Q

Which of the following BEST describes the definition of DHCP?
A. DHCP is utilized to dynamically lease IP addresses to hosts.
B. DHCP is utilized to statically lease IP address to hosts.
C. DHCP is utilized to permanently lease IP address dynamically to hosts.
D. DHCP is utilized to permanently lease IP address statically to hosts.

A

Answer: A
Explanation: Because DHCP server maintains a database of available IP addresses and configuration information. When the server receives a request from a client, the DHCP server determines the network to which the DHCP client is connected, and then allocates an IP address or prefix that is appropriate for the client, and sends configuration information appropriate for that client

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54
Q

Multiple servers’ IP addresses fall within the DHCP scope assigned by the administrator. Which of the following should be implemented to ensure these static IP addresses are not assigned to workstations?
A. The administrator should create exclusions for the workstations IP addresses.
B. The administrator should change the servers to utilize DHCP to obtain IP addresses.
C. The administrator should change the workstations to utilize static IP addresses.
D. The administrator should create exclusions for the servers IP addresses.

A

Answer: D
Explanation:
Whenever you define the ip pool from which IP addresses are to be dynamically assigned to the users then in order to avoid assignment of static ip address we can creat exclusion for the static ip addresses so that they are not assigned to any other host and this is how we can avoid ip address conflict on the network.

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55
Q 
The APIPA address 169.254.10.123 falls into which of the following class of addresses?
A. A
B. B
C. C
D. D
A

Answer: B
Explanation:
As the range for class B is from 128.0.0.0 to 191.255.255.255

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56
Q

A technician replaces a failed router in an office with the same model unit using the default settings. After the installation, the technician reboots all of the PCs and servers. Upon reboot some of the PCs are receiving IP addresses on the same subnet as the new router; other PCs are receiving addresses on the same subnet as the servers. Which of the following most likely describes the issue?
A. The DHCP lease pool was not large enough
B. DHCP lease times were set too low
C. The router is not the only DHCP server
D. DHCP was not enabled on the replacement router

A

Answer: C
Explanation:
This happens when there are multiple DHCP servers in the same LAN subnet. Here some machines are getting ip address from the router while some are getting ip address from another DHCP server present in the same domain.

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57
Q 
Which of the following is the OSI layer that handles file compression such as LZMA or DEFLATE?
A. Layer 3
B. Layer 5
C. Layer 6
D. Layer 7
A

Answer: C
Explanation:
The presentation level is translator between the application and network format. Unlike the lower layers, its concern is with the syntax and semantics of the information transmitted. Most user programs do not exchange random binary bit strings. They exchange data such as names, addresses, dates, etc. Different computers store the data in a different way. In order to allow these computers to transmit the data to each other the presentation layer translates the data into a standard form to be used on the network. Another function is data compression which can be used to reduce the number of bits needed to send the packet of information. Security is also added at this layer by using data encryption and decryption. This prevents others from intercepting the data and being able to decipher the meaning of the bits.

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58
Q 
Which of the following provides secure access to a network device?
A. SNMPv2
B. FTP
C. RSH
D. SSH
A

Answer: D
Explanation: Secure Shell (SSH) is a cryptographic network protocol for secure data communication, remote command-line login, remote command execution, and other secure network services between two networked computers that connects, via a secure channel over an insecure network, a server and a client (running SSH server and SSH client programs, respectively).

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59
Q 
Which of the following uses distance vector algorithms to determine the BEST network route to a destination address?
A. IS-IS
B. OSPF
C. BGP
D. RIP
A

Answer: D
Explanation: Here the term distance vector refers to the fact that the protocol manipulates vectors (arrays) of distances to other nodes in the network

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60
Q 
Which of the following uses classless subnet masks across a network?
A. Subnetting
B. CIDR
C. Supernetting
D. Summarization
A

Answer: B
Classless Inter-Domain Routing is based on variable-length subnet masking (VLSM), which allows a network to be divided into variously sized subnets, providing the opportunity to size a network more appropriately for local needs and also CIDR allows an address or routing prefix to be written with a suffix indicating the number of bits of the prefix, such as 192.168.2.0/24.

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61
Q 
Enterprise IP routing policy is MOST clearly depicted in which of the following configuration management documents?
A. Logical network diagrams
B. Physical network diagrams
C. Wiring schematics
D. Group security role assignments
A

Answer: A
Explanation:
A logical network diagram illustrates the network architecture of a group of interconnected computers and other devices, such as printers, modems, switches, routers, and even mobile devices. These electronic components form the physical network that provides local area network
(LAN) and wide area network (WAN) access to users. Once you know the layout and you have an idea about the packet flow then your job becomes easy and you can create an action plan to go for the implementation.

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62
Q

While working on a PC, a technician notices 0.0.0.0 in the routing table. Which of the following does this indicate?
A. It is the default route.
B. This is the address for the DHCP server.
C. The PC has not been assigned an IP address.
D. The firewall is down.

A

Answer: A
Explanation: The address 0.0.0.0 generally means “any address”. If a packet destination doesn’t match an individual address in the table, it must match a 0.0.0.0 gateway address. In other words, default gateway is always pointed by 0.0.0.0:

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63
Q 
If a NIC does not have a link light, there is a failure at which of the following OSI layers?
A. Physical
B. Session
C. Data link
D. Presentation
A

Answer: A
Explanation: The NIC does not have light refers to a situation that there could be a fault in the LAN cable or the ports are down and all of these fall under the physical layer. To make it simple, it falls in physical layer because blinking lights refers to the physical connectivity.

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64
Q 
Which of the following OSI layers allows users to access network services such as file sharing?
A. Layer 1
B. Layer 3
C. Layer 4
D. Layer 7
A

Answer: D
Explanation:
Basically File Transfer protocol (FTP) is responsible for file transfer which lies under Application layer (Layer 7) of OSI layers.

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65
Q 
Which of the following can function in an unsecure mode? 
A. SNMPv3
B. SSH
C. SSL
D. SCP
A

Answer: A
Explanation: SNMPv3 makes no changes to the protocol aside from the addition of cryptographic security, it looks much different due to new textual conventions, concepts, and terminology.SNMPv3 primarily added security and remote configuration enhancements to SNMP

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66
Q 
Which of the following is used to register and resolve IP addresses with their plain language equivalents?
A. Proxy server
B. DNS server
C. Brouter equipment
D. DHCP server
A

Answer: B
Explanation:
DNS server translate (resolution) the human-memorable domain names and hostnames into the corresponding numeric Internet Protocol (IP) addresses.

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67
Q 
Which of the following switch features allows for both incoming and outgoing data across physical ports at the same time?
A. Burst-frame
B. Full-duplex
C. Half-duplex
D. VoIP
A

Answer: B
Explanation: A full-duplex (FDX), or sometimes double-duplex system, allows communication in both directions, and, unlike half-duplex, allows this to happen simultaneously. Land-line telephone networks are full-duplex, since they allow both callers to speak and be heard at the same time

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68
Q 
Which of the following is a common physical network topology?
A. Cross-over
B. Loopback
C. Star
D. Straight
A

Answer: C
Explanation: A star network consists of one central switch, hub or computer, which acts as a conduit to transmit messages. This consists of a central node, to which all other nodes are connected; this central node provides a common connection point for all nodes through a hub. In star topology, every node (computer workstation or any other peripheral) is connected to central node called hub or switch.

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69
Q

Which of the following is always true when a router selects a destination?
A. The default gateway is selected over any other static or dynamic route.
B. The shortest route is always selected.
C. The most specific route is selected over the default gateway.
D. A dynamic route is selected over a directly attached network.

A

Answer: C
Explanation:
Router always looks for the most closely matched route for forwarding the packet. For example if there are two routes in your router and you have to send a packet to a host with an ip 10.10.10.10 then it will forward packet to 192.168.1.10 rather than 192.168.1.1:

Network Destination Netmask Gateway

  1. 0.0.0 0.0.0.0 192.168.1.1
  2. 10.10.0 255.255.255.0 192.168.1.10
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70
Q 
A proxy server would MOST likely be installed to provide which of the following functions? (Select TWO).
A. Combined DNS and DHCP hosting
B. Encryption
C. Content filtering
D. Fault tolerance
E. Website caching
A

Answer: C,E
Explanation: A content-filtering web proxy server provides administrative control over the content that may be relayed in one or both directions through the proxy. A caching proxy server accelerates service requests by retrieving content saved from a previous request made by the same client or even other clients.

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71
Q 
Which of the following would the telecommunications carrier use to segregate customer traffic over long fiber links?
A. VLAN
B. MPLS
C. VPN
D. PSTN
A

Answer: B
Explanation: MPLS is a mechanism in high-performance telecommunications networks that directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex lookups in a routing table. The labels identify virtual links (paths) between distant nodes rather than endpoints

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72
Q 
An administrator notices SMTP traffic is being blocked by the company firewall. Which of the following ports should be opened?
A. 25
B. 53
C. 110
D. 443
A

Answer: A
Explanation: SMTP is an Internet standard for electronic mail (e-mail) transmission across Internet Protocol (IP) networks. SMTP uses TCP port 25.

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73
Q 
Which of the following network topologies would be separated into two networks if a client in the middle is removed or the cable is cut?
A. Mesh
B. Ring
C. Bus
D. Star
A

Answer: C
Explanation:
A bus network topology is a network topology in which a set of clients are connected via a shared communications line/cables, called a bus.

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74
Q 
Which of the following is an example of a Class C address?
A. 10.19.0.79
B. 127.34.8.197
C. 176.96.1.222
D. 192.168.1.105
A

Answer: D
Explanation: Class C address range varies from 192.0.0.0 to 223.255.255.255.

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75
Q 
A computer's DNS has bad cach records.which tools can be used to clear the DNS record.
A. netstat
B. ipconfig
C. nslookup
D. tracert
A

Answer: B
Explanation: ipconfig/flushdns will flush/clear the old DNS record, which includes good and bad cached records

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76
Q 
A router operates at which of the following layers of the OSI model?
A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 5
A

Answer: B

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77
Q 
Which of the following has the LEAST amount of collisions in a domain?
A. Bridge
B. Hub
C. Repeater
D. Switch
A

Answer: D

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78
Q 
Which of the following protocols uses port 3389 by default?
A. RDP
B. TFTP
C. IMAP
D. DNS
A

Answer: A

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79
Q 
A customer has requested that a new piece of network equipment be installed so that the customer can have multiple subnets for each department, but allow network traffic from each department to reach one another without the use of a router. Which of the following network devices would satisfy this customer’s requirements?
A. Packet filter
B. Layer 3 switch
C. Stateful firewall
D. Wireless bridge
A

Answer: B

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80
Q 
Which of the following would be used to run an instance of a Layer 2 device within an application?
A. Virtual switch
B. Virtual router
C. Virtual PBX
D. NaaS
A

Answer: A

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81
Q 
A user arrives at a new house and the Internet provider states the connection will run through the cable. If the user wants to install multiple PCs, which of the following will the user need in order to establish a connection? (Select TWO).
A. VPN
B. Router
C. T1 card
D. WEP
E. Modem
A

Answer: B,E

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82
Q 
Which of the following protocols is used to send time synchronization updates on a given network?
A. NTP
B. POP3
C. DNS
D. IMAP
A

Answer: A

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83
Q 
Which of the following network protocols is used to transport email across the Internet?
A. NTP
B. SSH
C. SMTP
D. SNMP
A

Answer: C

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84
Q 
The TCP/IP application layer contains which of the following OSI layers?
A. Layers 1, 5, 6, 7
B. Layers 4, 7
C. Layers 5, 6, 7
D. Layer 7
A

Answer: C

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85
Q 
Which of the following is MOST commonly implemented for remote access to UNIX systems?
A. SSL
B. RSH
C. SSH
D. RDP
A

Answer: C

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86
Q 
Using source port numbers as a way to keep track of connections is a characteristic of which of the following protocols?
A. TCP
B. UDP
C. NAT
D. PAT
A

Answer: D

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87
Q 
Which of the following network devices builds a table of ports to MAC addresses to forward packets only to necessary ports?
A. Switch
B. Hub
C. Router
D. Repeater
A

Answer: A

88
Q 
A user is unable to open up websites on the Internet from a browser. The administrator determines that the workstation can ping its local gateway, but not the remote web server. At which of the following layers of the OSI model does the problem MOST likely exist?
A. Data link
B. Network
C. Session
D. Physical
A

Answer: B

89
Q 
The application layer in the TCP/IP model is comparable to which of the following layers in the OSI model?
A. Layer 2
B. Layer 5
C. Layer 6
D. Layer 7
A

Answer: D

90
Q 
A small company has a single multi-layer switch. The company currently has all network devices on the same subnet but would like to switch the servers to another subnet for security reasons. The company cannot budget any more money to purchase additional hardware. Which of the following features should be used to achieve the new company requirements?
A. PAT
B. PoE
C. VLAN
D. QoS
A

Answer: C

91
Q

A network technician has determined a managed network switch has failed. The technician knows how to install a new switch, but not how to properly configure it. Which of the following troubleshooting steps should the technician take NEXT?
A. Escalate the problem
B. Identify potential effects
C. Test the theory to determine cause
D. Establish a plan of action to resolve the problem

A

Answer: A

92
Q 
A company has one public IP address, and only one device needs to be able to connect to the Internet at a time. Which of the following is the BEST option for connectivity?
A. VLSM
B. CIDR
C. NAT
D. PAT
A

Answer: C

93
Q 
Which of the following protocols does DNS utilize on port 53?
A. TCP
B. FTP
C. RTP
D. ICMP
A

Answer: A

94
Q 
At which of the following layers do IP addresses exist?
A. TCP/IP model Internet layer
B. OSI model Data Link layer
C. TCP/IP model Transport layer
D. OSI model Physical layer
A

Answer: A

95
Q 
Which two layers of the OSI model make up the TCP/IP model Network Interface layer?
A. Application and Transport
B. Transport and Session
C. Physical and Data Link
D. Session and Presentation
A

Answer: C

96
Q 
Which of the following source ports is MOST likely to be used by a client when making an outbound TCP connection to a windows server?
A. 80
B. 445
C. 3000
D. 3389
A

Answer: C

97
Q 
Which of the following services are affected by closing the default ports of 80 and 21 via ACL on a company router?
A. FTP and basic Internet traffic
B. HTTPS and IMAP traffic
C. DNS and TELNET traffic
D. VPN and RDP traffic
A

Answer: A

98
Q

A network administrator is tasked with blocking unwanted spam is being relayed by an internal email server. Which of the following is the FIRST step in preventing spam that is originating from bots on the network?
A. Closing off port 25 on the firewall
B. Closing off port 53 on the firewall
C. Turning off the SMTP service on the email server
D. Turning off the IMAP service on the email server

A

Answer: A

99
Q 
Which of the following uses types and codes rather than ports?
A. EIGRP
B. ICMP
C. UDP
D. IPv6
A

Answer: B

100
Q 
Two workstations are unable to communicate on the network despite having known good cables. When one device is unplugged from the network the other device functions properly. Which of the following could be the cause of this failure?
A. Duplicate IP address
B. Incorrect subnet mask
C. Incorrect gateway
D. Wrong DNS
A

Answer: A

101
Q 
Which of the following protocols are used to provide accurate time to network devices?
A. SMTP
B. FTP
C. TLS
D. NTP
A

Answer: D

102
Q 
Hubs are differentiated from switches in that between the two, only hubs have:
A. a single collision domain.
B. a single broadcast domain.
C. multiple collision domains.
D. multiple broadcast domains.
A

Answer: A

103
Q 
A home user states during a basement remodel, one of the workers cut the network cable that goes from the modem to the WAP and nothing else has changed. According to the network troubleshooting methodology, which of the following is the NEXT step?
A. Identify the problem
B. Question the user
C. Establish a plan of action
D. Establish a theory of probable cause
A

Answer: C

104
Q 
Which of the following layers of the OSI model make up the Network Interface layer of the TCP/IP model? (Select TWO).
A. Application
B. Physical
C. Presentation
D. Transport
E. Data Link
F. Network
A

Answer: B,E

105
Q 
At which layer of the OSI model do MAC addresses operate?
A. Data Link
B. Network
C. Application
D. Physical
A

Answer: A

106
Q

A network technician recently replaced a managed switch in an enterprise network with a new managed switch. Users on the switch can communicate with each other but now cannot access other network segments. Which of the following is the MOST likely reason that the users are unable to access any network segments?
A. The newly installed switch is defective and must be returned.
B. The newly installed switch is using a different MAC address than the previous switch.
C. The technician forgot to change the VTP mode on the new switch to server.
D. The technician did not use the correct cable when trunking the new switch.

A

Answer: D

107
Q 
A company has been given a Class C address to be utilized for all devices. The company has several subnets and the largest subnet has 15 hosts. Which of the following represents the MINIMUM CIDR notation of this subnet mask?
A. /26
B. /27
C. /28
D. /29
A

Answer: B

108
Q 
Users report that they are unable to access the production server with IP address 192.168.30.17. These users need to be provided access without changing any subnet to VLAN information. The VLANs configured on the network are listed below:
DepartmentVLAN #Subnet used
Marketing20192.168.20.0/28
Customer Service25192.168.20.64/28
Finance30192.168.30.0/28
WHSE35192.168.30.16/28
Sales40192.168.3.16/28
The users experiencing this issue need to be added to which of the following VLANs?
A. 25
B. 30
C. 35
D. 40
A

Answer: C

109
Q 
Which of the following addresses is a class B private address?
A. 132.216.14.184
B. 152.119.25.213
C. 162.17.43.22
D. 172.23.226.34
A

Answer: D

110
Q 
Which of the following is the minimum subnet mask to allow 172.16.1.5 and 172.16.4.3 to be on the same subnet?
A. /19
B. /21
C. /22
D. /24
A

Answer: B

111
Q 
DHCP uses which of the following ports by default?
A. 21
B. 23
C. 68
D. 443
A

Answer: C

112
Q 
A network technician visits a site that needs voice connectivity to the corporate office and installs four IP phones. The phone exchange resides at the telephone company. Which of the following technologies is being used?
A. Virtual switch
B. Virtual server
C. Virtual desktop
D. Virtual PBX
A

Answer: D

113
Q 
A MAC address is a part of which of the following OSI model layers?
A. Network
B. Data Link
C. Physical
D. Transport
A

Answer: B

114
Q

An administrator is able to list the interfaces on a switch after providing the community string
“public”. Which of the protocols is the administrator MOST likely using?
A. Telnet
B. RADIUS
C. SSH
D. SNMP

A

Answer: D

115
Q

The systems administrator has assigned an IP address and default gateway to a standard Layer 2 switch. Which of the following would be the primary purpose of doing this?
A. Allow VLAN routing
B. Enable packet filtering on the switch
C. Allow remote administration of the switch
D. Enable MAC filtering on the switch

A

Answer: C

116
Q 
Which of the following dynamic routing protocols selects routing paths based upon hop count?
A. BGP
B. RIP
C. OSPF
D. IGRP
A

Answer: B

117
Q

A technician, Joe, visits a site that has reported a network down emergency. He immediately reboots the switches and the router since the network is down. Which of the following network troubleshooting methodology steps should Joe have performed FIRST?
A. Determine if anything has changed
B. Once a theory is confirmed determine the next step is to resolve the problem
C. Implement the solution or escalate as necessary
D. Question the obvious

A

Answer: A

118
Q 
A technician finds that the network card is no longer functioning. At which of the following OSI layers is the problem occurring?
A. Layer 1
B. Layer 3
C. Layer 5
D. Layer 7
A

Answer: A

119
Q 
The address 6FFE:FFFF:0000:2F3B:04AC:00FF:FEBE:5C4A is an example of which of the following?
A. APIPA
B. MAC
C. IPv4
D. IPv6
A

Answer: D

120
Q 
Standards such as JPEG and ASCII operate at which of the following OSI model layers?
A. Presentation
B. Data link
C. Session
D. Application
A

Answer: A

121
Q 
Which of the following protocols are used to view and send mail from a local host off of a remote server? (Select TWO).
A. TFTP
B. SNMP
C. POP3
D. IMAP4
E. SFTP
A

Answer: C,D

122
Q 
A multi-layer switch operates at which of the following OSI layers?
A. Layers 1 and 5
B. Layers 2 and 3
C. Layers 4 and 5
D. Layers 5 and 6
A

Answer: B

123
Q 
Which of the following is a link state routing protocol?
A. RIPv2
B. BGP
C. IS-IS
D. RIP
A

Answer: C

124
Q 
Layers 5, 6, and 7 from the OSI model correspond to which of the following layers of the TCP/IP model?
A. Transport
B. Application
C. Internet
D. Network Interface
A

Answer: B

125
Q 
Which of the following protocols is the BEST choice for retrieving email on multiple devices?
A. IMAP4
B. SMTP
C. FTP
D. SNMPv3
A

Answer: A

126
Q 
A web server that provides shopping cart capabilities for external end users will likely function with which of the following protocols?
A. HTTPS
B. POP3
C. SSH
D. SMTP
A

Answer: A

127
Q 
Which of the following protocols is used to transfer files over the Internet?
A. SNMP
B. NTP
C. FTP
D. SIP
A

Answer: C

128
Q 
Which of the following ports would have to be allowed through a firewall for NTP to pass on its default port?
A. 123
B. 143
C. 153
D. 163
A

Answer: A

129
Q 
Which of the following TCP/IP model layers does the OSI model Data Link layer map to?
A. Application
B. Transport
C. Internet
D. Network Interface
A

Answer: D

130
Q 
On which of the following layers of the OSI model does IP operate?
A. Session
B. Transport
C. Network
D. Data link
A

Answer: C

131
Q 
Which of the following ports is used by Telnet?
A. 21
B. 23
C. 80
D. 143
A

Answer: B

132
Q 
Which of the following subnet masks indicate a subnet with exactly 254 assignable IP addresses?
A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.255.254
A

Answer: C

133
Q

Which of the following protocols could the below packet capture be from?

Port: 161
msgVersion: 
msgUsername: 
msgAuthenticationParameters: 
msgPrivacyParameters: 
msgData:
data: get-request
request-iD. 
error-status: noError (0)
error-index: 0
variable-bindings: 0 items

A. SNMPv3
B. SSH
C. HTTP
D. SNMPv1

A

Answer: A

134
Q 
Which of the following network protocols would be used to transmit traps across a network to a log server?
A. SMTP
B. PPPoE
C. POP3
D. SNMP
A

Answer: D

135
Q

Which of the following is an advantage of dynamic routing?
A. It can reroute connectivity in the event of failure.
B. It is the simplest form of routing.
C. The routes do not change.
D. The setup and configuration are done manually.

A

Answer: A

136
Q 
203.50.5.0 is an example of which of the following network classes?
A. Class A
B. Class B
C. Class C
D. Class D
A

Answer: C

137
Q 
Which of the following port numbers needs to be open on a firewall to allow FTP traffic?
A. 21
B. 22
C. 23
D. 25
A

Answer: A

138
Q 
Which of the following protocols is used by Windows to securely access a remote computer?
A. RAS
B. Telnet
C. PPP
D. RDP
A

Answer: D

139
Q 
The components of a NIC function at which of the following layers of the OSI model? (Select TWO).
A. Layer 1
B. Layer 2
C. Layer 3
D. Layer 4
E. Layer 5
A

Answer: A,B

140
Q 
An IP address is encapsulated at which of the following layers of the OSI model?
A. Transport
B. Data link
C. Network
D. Application
A

Answer: C

141
Q 
Assigning IP addresses from a pool of predetermined available addresses is the role of which of the following network appliances?
A. RADIUS
B. DNS
C. DHCP
D. IDS
A

Answer: C

142
Q 
Which of the following is considered a routing metric?
A. Hop count
B. QoS
C. Subnet size
D. IP address
A

Answer: A

143
Q 
At which of the following layers of the OSI model is the Logical Link Control found?
A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 5
A

Answer: A

144
Q 
After a new firewall is installed, users report that they do not have connectivity to the Internet. The output of the ipconfig command shows an IP address of 169.254.0.101. Which of the following ports would need to be opened on the firewall to allow the users to obtain an IP address? (Select TWO).
A. UDP 53
B. UDP 67
C. UDP 68
D. TCP 53
E. TCP 67
F. TCP 68
A

Answer: B,C

145
Q 
At which of the following layers of the OSI model do packets exist?
A. Network
B. Session
C. Data Link
D. Transport
A

Answer: A

146
Q 
Which of the following ports does IMAP use by default?
A. 110
B. 123
C. 143
D. 443
A

Answer: C

147
Q 
Which of the following is a public class C IP address?
A. 4.2.2.2
B. 194.178.12.54
C. 175.35.46.60
D. 192.168.1.34
A

Answer: B

148
Q 
Users in several departments are reporting connectivity problems. The technician examines the computer and finds the following settings. The IP address is 10.0.1.0 with a subnet mask of 255.255.252.0. The default gateway is 10.0.1.1 and the DNS server is 10.0.0.15. A user can connect to the internet but not servers on other internal subnets. The technician is not able to connect with a server with an IP of 10.0.2.25. Which of the following is MOST likely the problem?
A. Default gateway
B. Duplicate IP address
C. Wrong DNS
D. Subnet mask
A

Answer: D

149
Q

Which of the following correctly lists the layers of the OSI model starting at Layer 1?
A. Data Link, Physical, Network, Transport, Presentation, Session, Application.
B. Physical, Data Link, Network, Transport, Presentation, Session, Application.
C. Physical, Data Link, Transport, Network, Session, Presentation, Application.
D. Physical, Data Link, Network, Transport, Session, Presentation, Application.

A

Answer: D

150
Q 
At which layer of the OSI and TCP/IP model would HTTP and FTP be found?
A. Application
B. Network
C. Session
D. Data Link
A

Answer: A

151
Q 
At which layer of the TCP/IP model would cabling exist?
A. Network Interface
B. Internet
C. Application
D. Transport
A

Answer: A

152
Q 
Which of the following can be configured on a managed network switch to send real time alerts to a technician?
A. SSID
B. SMTP
C. SNMP
D. Syslog
A

Answer: C

153
Q 
A small business owner is in the process of setting up a SOHO office. The office has only one connection to the Internet via a broadband cable connection. The office has four subnets that must be able to connect to the Internet. Which of the following devices would enable the owner to meet these requirements?
A. A firewall
B. A router
C. A hub
D. A Layer 2 switch
A

Answer: B

154
Q 
Which of the following is described by the MAC address FF:FF:FF:FF:FF:FF?
A. Unicast MAC address.
B. Invalid MAC address.
C. Multicast MAC address.
D. Broadcast MAC address.
A

Answer: D

155
Q

Based on the packet capture below, which of the following services is the client requesting?

08:30:54.982378192.168.50.42.8329 > 192.168.50.20.53:
S 32859235:32859235(0) win 8096
08:30:55.001378192.168.50.20.53 > 192.168.50.42.8329:
S 31845637: 31845637(0) ack 32859236 win 8096
08:30:55.027578192.168.50.42.8329 > 192.168.50.51.53:
ack 1 win 8096
A. ARP
B. SMTP
C. DHCP
D. DNS

A

Answer: D

156
Q 
Which of the following exist at layer three of the OSI model? (Select TWO).
A. NIC
B. Switch
C. Frame
D. Packet
E. Router
F. Cable
A

Answer: D,E

157
Q 
Which of the following routing protocols can be utilized as both an IGP and EGP?
A. EIGRP
B. RIP
C. IGRP
D. RIPv2
A

Answer: A

158
Q 
Which of the following layers of the OSI model is responsible for stripping the TCP port information before sending the packet up to the next layer?
A. 2
B. 3
C. 4
D. 5
A

Answer: C

159
Q 
The protocol SNMP uses which of the following ports by default?
A. 53
B. 61
C. 67
D. 161
A

Answer: D

160
Q 
Which of the following IP address/CIDR combinations represent public address space? (Select TWO).
A. 10.1.1.1/8
B. 172.15.1.1/16
C. 172.16.1.1/16
D. 172.31.1.1/16
E. 193.168.2.1/24
F. 224.0.0.1/32
A

Answer: B,E

161
Q 
Which of the following contains the SYN and ACK flags?
A. UDP header
B. IP header
C. TCP header
D. ICMP header
A

Answer: C

162
Q 
Which of the following remote access protocols is commonly used for command line access to a device?
A. RAS
B. VPN
C. RDP
D. SSH
A

Answer: D

163
Q 
A technician wants to send management information from devices on the network to a central server and have it encrypted in the process. Which of the following protocols can be used?
A. SNMPv3
B. FTP
C. TFTP
D. Telnet
A

Answer: A

164
Q 
Which of the following would be considered a Class C private address?
A. 10.0.0.125
B. 192.168.50.125
C. 192.169.0.132
D. 255.255.255.0
A

Answer: B

165
Q 
Which of the following protocols is used to detect and eliminate switching loops within a network?
A. Spanning Tree Protocol
B. EIGRP
C. OSPF
D. Dynamic routing
A

Answer: A

166
Q 
Which of the following are valid hosts for the Private IP Address range 172.16.0.x /23? (Select TWO).
A. 172.16.0.255
B. 172.16.0.0
C. 172.16.1.1
D. 172.16.8.0
E. 172.16.256.255
A

Answer: A,C

167
Q 
An administrator needs to open ports in the firewall for both DNS and eDNS. Which of the following default ports would need to be opened on the firewall? (Select TWO).
A. TCP 23
B. TCP 53
C. TCP 123
D. UDP 23
E. UDP 53
F. UDP 123
A

Answer: B,E

168
Q 
The MAC address of a network device is used to communicate at which of the following OSI layers?
A. Layer 1
B. Layer 2
C. Layer 4
D. Layer 5
A

Answer: B

169
Q 
192.168.0.7/8 notation denotes which of the following IPv4 subnet masks?
A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.255.255
A

Answer: A

170
Q 
A technician has resolved a ticket to fix a user’s printer and has verified that the user is able to print with no issues. Which of the following action steps should the technician perform FIRST?
A. Document findings and outcomes
B. Establish a theory of probably cause
C. Upgrade the printer drivers
D. Close out the service ticket
A

Answer: A

171
Q 
Which of the following TCP/IP model layers combines four OSI model layers?
A. Application Layer
B. Internet Layer
C. Transport Layer
D. Network Interface Layer
A

Answer: A

172
Q 
Which of the following OSI model layers are present in the application layer of the TCP/IP model? (Select TWO).
A. Data Link
B. Transport
C. Network
D. Session
E. Presentation
A

Answer: D,E

173
Q 
A SOHO client has tasked Joe, a technician, with setting up a basic SOHO network to support four laptops and one desktop PC. The client would also like to have a basic wireless network to use for internal devices only that is secure. Given the list of requirements, which of the following devices would Joe need to purchase for his client? (Select TWO).
A. IDS
B. Repeater
C. Switch
D. WAP
E. UTM device
A

Answer: C,D

174
Q 
Which of the following OSI model layers is used to frame packets that are sent over a medium?
A. Session
B. Data link
C. Physical
D. Transport
A

Answer: B

175
Q 
Which of the following are considered unsecure access methods? (Select TWO).
A. FTP
B. IPSec
C. RCP
D. SCP
E. SFTP
A

Answer: A,C

176
Q 
Frame relay occurs at which of the following layers of the OSI model?
A. Layer 1
B. Layer 2
C. Layer 4
D. Layer 6
A

Answer: B

177
Q 
Which of the following protocols occurs at Layer 4 of the OSI model?
A. ISDN
B. IPX
C. GRE
D. UDP
A

Answer: D

178
Q 
Which of the following uses a 128-bit addressing scheme?
A. MAC
B. DHCP
C. IPv4
D. IPv6
A

Answer: D

179
Q 
Which of the following protocols exchange the latest information that has changed in the routing table?
A. TFTP
B. BGP
C. OSPF
D. IGMP
A

Answer: C

180
Q 
An advertised route learned from one protocol over a different protocol is called:
A. Co-location
B. Reallocation
C. Redundancy
D. Redistribution
A

Answer: D

181
Q

A network administrator has been assigned the 192.168.2.64/26 network and assigns the following computer’s IP addresses:
192.168.2.70
192.168.2.100
192.168.2.125
192.168.2.130
When the administrator tries to ping the other computers from 192.168.2.130, an ECHO REPLY is not received. Which of the following must the network administrator do?
A. Change the IP of 192.168.2.130 to 192.168.1.128.
B. Change the IP of 192.168.2.130 to 192.168.2.126.
C. Change the default gateway of 192.168.2.130 accordingly.
D. Reconfigure the switch for the right VLAN.

A

Answer: B

182
Q 
Which of the following is used to embed the MAC address of an Ethernet interface in a
corresponding IPv6 address?
A. Subnet
B. IANA prefix
C. EUI-64
D. Site-local
A

Answer: C

183
Q 
The BEST way to determine the next hop of a packet is to check the:
A. link state.
B. routing table.
C. routing metrics.
D. convergence.
A

Answer: B

184
Q 
Which of the following reside at a minimum of Layer 3 of the OSI model? (Select TWO).
A. Hub
B. Switch
C. MAC address
D. IP address
E. Router
A

Answer: D,E

185
Q 
Which of the following is the unit used to transfer information at Layer 2 of the OSI model?
A. Packet
B. Socket
C. Session
D. Frame
A

Answer: D

186
Q 
Which of the following differentiates a layer 3 switch from a layer 2 switch?
A. Routing
B. Bridging
C. Switching
D. Repeating
A

Answer: A

187
Q 
Which of the following defines an IP address that is NOT routed on the Internet?
A. Multicast
B. Public
C. Private
D. Classful
A

Answer: C

188
Q 
Which of the following operate at the Data Link layer of the OSI model? (Select TWO).
A. MAC address
B. Router
C. Hub
D. Switch
E. IP address
A

Answer: A,D

189
Q 
Which of the following OSI model layers is used to order packets which may have arrived out of order?
A. Transport
B. Presentation
C. Network
D. Session
A

Answer: A

190
Q 
Which of the following describes the amount of time it takes for a packet to transmit from one switch to another?
A. Hop count
B. Latency
C. MTU limit
D. Distance vector
A

Answer: B

191
Q

Dynamic DNS provides which of the following services?
A. Automatic registration of host records
B. Translates public host names to private host names
C. Provides round robin load balancing for web servers
D. Provides aliases for additional search suffixes

A

Answer: A

192
Q 
Which of the following DNS records must be queried to resolve the IPv6 address of a website?
A. CNAME
B. PTR
C. AAAA
D. A
A

Answer: C

193
Q 
Which of the following records allows for reverse DNS lookups?
A. AAAA
B. A
C. PTR
D. CNAME
A

Answer: C

194
Q 
Which of the following DNS records is used in conjunction with 192:168::1:10?
A. AAAA
B. MX
C. TXT
D. PTR
A

Answer: A

195
Q 
Which of the following is associated with DNS reverse lookup zones?
A. CNAME
B. TXT
C. PTR
D. MX
A

Answer: C

196
Q

The network technician has recently implemented VLANs on the company network. Ever since this implementation, sections within the company can no longer share information. While troubleshooting, the technician realizes they are unable to ping a device from another VLAN. Which of the following needs to be configured to fix this problem?
A. Clear the ARP table
B. Add host entries on the user’s computer
C. Configure 802.1x trunks on the switches
D. Configure 802.1q trunks on the switches

A

Answer: D

197
Q 
When a loop occurs, which of the following STP components determines which port to disable?
A. Convergence
B. Root bridge
C. BPDU guard
D. MAC address
A

Answer: B

198
Q

The term virtual switch refers to which of the following?
A. A switch that has not yet been implemented in the local network
B. Migrating an entire environment to virtualization
C. A computer component that controls environmental elements, such as lights and thermometers
D. A logical, rather than a physical switch device

A

Answer: D

199
Q 
Which IEEE protocol is used with VLAN technology?
A. 802.11a
B. 802.11b
C. 802.1m
D. 802.1q
A

Answer: D

200
Q 
Which of the following allows for groups of ports on the same switch to operate as a part of different segmented networks?
A. RIP
B. STP
C. VLAN
D. MTU
A

Answer: C

201
Q

After the technician has established a theory of probable cause of a user reported problem, which of the following should the technician do NEXT in the troubleshooting process?
A. Implement the solution to the problem.
B. Establish a plan of action.
C. Identify the problem.
D. Implement preventative measures.

A

Answer: B

202
Q

A network administrator notices that load balancing is not working properly on the web cluster as previously configured. In speaking with management, a change to the IP addressing scheme was made yesterday which possibly affected one member of the cluster. Due to the timing of the events, the administrator theorizes that this change caused the problem. Which of the following should the administrator do NEXT?
A. Escalate to the management team
B. Change the IP address back to its previous state
C. Test the theory by analyzing logs
D. Create a plan of action to present to management

A

Answer: C

203
Q 
Which of the following STP states indicates an inactivated port due to a loop?
A. Disabled
B. Learning
C. Blocking
D. Forwarding
A

Answer: C

204
Q 
Which of the following describes a manually entered route?
A. Static
B. Dynamic
C. Multicast
D. Unicast
A

Answer: A

205
Q 
A technician has been tasked to set-up a managed switch. Which of the following will the technician need to accomplish this task?
A. IP address
B. Switch serial number
C. VLAN tag
D. Loopback plug
A

Answer: A

206
Q 
A technician has installed a group of layer 2 switches with multiple VLANs. The VLANs cannot talk to each other. Which of the following network devices could correct this problem? (Select TWO).
A. Hub
B. DNS server
C. DHCP server
D. Layer 3 switch
E. Router
A

Answer: D,E

207
Q 
Which of the following is the BEST network configuration to use if the technician wants to send all outgoing traffic to the external router?
A. ACLs
B. Static routing
C. Trunking
D. SNMP strings
A

Answer: B

208
Q

A user reports they are unable to access a file on a mapped network drive. A technician discovers the server where the file is located did not come back online after last night’s power outage and manually powers the server back online. The technician then verifies the user can connect to their file. Which of the following troubleshooting steps should the technician do NEXT?
A. Escalate by following change procedures
B. Establish a plan of action to resolve the problem
C. Document findings, actions, and outcomes
D. Question the user

A

Answer: C

209
Q 
A user reports intermittent network connectivity from their desktop PC. A technician determines the cause to be a bad wall jack and fixes the jack. Which of the following should the technician do NEXT?
A. Test the theory
B. Question the user
C. Document the outcome
D. Verify functionality
A

Answer: D

210
Q 
Which of the following is used to describe trunking VLANs on a network?
A. 802.11a
B. 802.11i
C. 802.1q
D. 802.1x
A

Answer: C

211
Q 
A company pays a third-party vendor a monthly fee to connect to offsite servers and desktops. Users connect to the desktops via RDP, and administrators connect to the servers via VPN. Servers and desktops are hardware-based. Which of the following is the third-party providing?
A. Virtual desktops
B. Virtual servers
C. NaaS
D. SaaS
A

Answer: C

212
Q 
A forward lookup zone converts which of the following?
A. IP addresses to hostnames
B. Hostnames to IP addresses
C. MAC addresses to IP addresses
D. IP Addresses to MAC addresses
A

Answer: B

213
Q

A user reports lack of network connectivity on their desktop. Which of the following is the FIRST step of the network troubleshooting methodology that the technician should perform?
A. Establish a plan of action to resolve the problem.
B. Establish a theory of probable cause by questioning the obvious.
C. Test the theory to determine the cause.
D. Question the user to determine if anything has changed.

A

Answer: D

214
Q

A technician has narrowed down the cause of a problem to two possible sources. Which of the following should the technician do NEXT?
A. Implement a solution for both causes to be sure all possibilities are covered.
B. Choose the more likely cause and test to confirm.
C. Establish a plan of action for each.
D. Choose the less likely cause and test to eliminate.

A

Answer: B

215
Q 
A user reports that they are unable to connect to the network. Upon further investigation, a technician notices that the user has an IP address/subnet mask combination of 192.168.204.255/24. The default gateway for the network is 192.168.204.254. Which of the following could the user’s IP address be changed to so that they could connect to the network?
A. 192.168.204.0/27
B. 192.168.204.1/27
C. 192.168.204.112/24
D. 192.168.204.254/24
A

Answer: C

216
Q 
In order for switching loops to be automatically disabled, which of the following needs to be implemented?
A. Routing tables
B. Collision domains
C. Port mirroring
D. Spanning-tree protocol
A

Answer: D

217
Q

A number of remote users have reported being unable to securely log on to the company’s network. Upon speaking with some of the employees experiencing the issue, no changes were made to their configurations, usernames, or passwords. The technician establishes a theory that one of the VPN concentrators may be down. Which of the following should the technician do NEXT?
A. Plan to reboot the concentrator as the potential solution
B. Escalate the problem to management
C. Continue to speak to users, questioning if changes have been made
D. Test access to the concentrator to confirm the status

A

Answer: D

Network+ N10-005 (5 decks)

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