Networking Concepts Flashcards
The company’s corporate headquarters provided your branch office a portion of their Class C subnet to use at a new office location. In the next several questions, you will be asked to allocate the minimum number of addresses using CIDR notation to accommodate each department’s needs.
/26
Mark is setting up a DHCP server on a segment of the corporate LAN. Which of the following options is NOT required in the DHCP scope to allow hosts on that LAN segment to be assigned a dynamic IP address and still be able to access the Internet and internal company servers?
Reservations
Routing prefixes, which are assigned in blocks by IANA and distributed by the Regional Internet Registry (RIR), are known as what?
Autonomous system number
Which of the following BEST describes how a DHCP reservation works
By matching a MAC address to an IP address within the DHCP scope
Which of the following is used to proxy client requests for IP configurations across different network segments?
DHCP relay
Which of the following network protocols is used to send email from one server to another server?
SMTP
A network administrator is tasked with building a wireless network in a new building located right next door. The wireless clients should not have visibility to one another but should have visibility to the wired users. Users must seamlessly migrate between the buildings while maintaining a constant connection to the LAN. How should he configure the new wireless network in the new building?
Use the same SSIDs on different channels and AP isolation
At which of the following OSI layer does QoS operate?
Layer 3
Your company has decided to upgrade its legacy phone system to use VoIP devices instead. The new phones will download the configurations from a server each time they boot up. Which of the following ports needs to be opened on the firewall to ensure the phones can communicate with the TFTP server?
69
Which of the following applies to data as it travels from Layer 1 to Layer 7 of the OSI model?
De-encapsulation
A network administrator was told by the Chief Information Officer (CIO) to set up a new office with a network that has redundancy. What topology would BEST meet the CIO’s requirement?
Mesh
You have been asked to create a network where visitors can access the Internet without disrupting the office’s own intranet. Which of the following types of networks should you create?
Guest network
What is an example of a signaling protocol used in VoIP telephony?
H.323
What is considered a classless routing protocol?
IS-IS
Which of the following protocols must be implemented for two switches to share VLAN information?
VTP
Which media access control technology will listen to a cable to ensure there is no traffic being transmitted before sending its traffic but will implement a back-off timer if a collision does occur?
CSMA/CD
What is the correct CIDR notation for the Marketing department’s subnet which requires 11 devices?
/28
(This is a simulated Performance-Based Question. ON the real exam, you may be given a chart with numerous ports and protocols and be asked to drag and drop them to match the ports with the protocols.)
What ports do FTP and SFTP utilize?
21, 22
Which type of network geography is used to connect various circuits between remote locations?
WAN
A network administrator wants to implement a centralized monitoring solution that utilizes push alerts sent from the client to a server. Which of the following should be implemented within the network?
SNMP
Which of the following wireless technologies use MIMO on non-overlapping channels to increase the wireless network’s bandwidth?
802.11n
You have been asked by your supervisor, Martha, to ensure that you enable 802.3af on a managed switch. Which of the following features does Martha want you to enable?
PoE
Which of the following is an example of a valid IPv4 address?
192.168.1.254
The Chief Information Officer (CIO) in your company has been trying to convince the Chief Security Officer (CSO) that the company should move its data to a SaaS solution to save some money in the budget. The CSO is hesitant to move all of the company’s data because she is concerned with the risk involved in moving the corporation’s sensitive data to a SaaS solution. The CSO has been asked for a reason behind her fears. Which of the following might be her response?
Migrating all of our data to a SaaS solution will result in a loss of full control over our data and resources
Jason just got into his car and paired his smartphone to his car’s stereo. Which of the following types of networks was just created?
PAN
The server administrators have asked you to open the default port on the firewall for their new DNS server. Which of the following ports should you set as ALLOW in the ACL?
53
A college needs to provide wireless connectivity in a cafeteria with a minimal number of WAPs. What type of antenna will provide the BEST coverage?
High gain
Which of the following ports are used to provide secure remote connection sessions over the Internet?
22
You have been asked to add an entry to your DNS records to allow SMTP traffic to be sent out using your domain name. Which type of record should you add to your DNS record?
MX
You have been asked to connect three 802.11a devices to an 802.11g access point configured with WEP. The devices are within 20 feet of the access point, but they still cannot associate with the access point. Which of the following is the MOST likely cause of the devices not associating with the WAP?
Frequency mismatch
A network administrator needs to allow employees to upload files to a remote server securely. What port must be allowed through the firewall?
22
Your network has been the victim of a data breach. Your company has hired an incident response team to help control the breach’s damage and restore the network to its full functionality. The incident response team wants to connect a packet capture device to the switch that connects your servers to the DMZ. Which of the following should be configured to ensure the packet capture device can receive all the network traffic going to and from the servers?
Port mirroring
Which type of wireless technology are OFDM, QAM, and QPSK examples of?
Modulation
You are configuring a point-to-point link and want to ensure it is configured for the most efficient use of your limited pool of available public IP addresses. Which of the following subnet masks would be BEST to use in this scenario?
/30
Which of the following network geographies refers to a network that spans several buildings within walking distance of each other, such as at a business park?
CAN
(This is a simulated Performance-Based Question.)
The company’s corporate headquarters provided your branch office a portion of their Class C subnet to use at a new office location. You must allocate the minimum number of addresses using CIDR notation to accommodate each department’s needs.
/26
What type of cable would you use to connect a switch to a hub?
Crossover
Which of the following port or ports does SIP use?
5060/5061
What describes an IPv6 address of ::1?
Loopback
Dion Training has just installed a brand new email server. Which of the following DNS records would need to be created to allow the new server to receive email on behalf of diontraining.com?
MX
Which of the following protocols are designed to avoid loops on a Layer 2 network?
802.1d
Which of the following describes the ID of a specified native VLAN when traffic passes over a trunk?
It becomes the default VLAN for untagged frames
A small law office has a network with three switches (8 ports), one hub (4 ports), and one router (2 ports). Switch 1 (switch port 8) is connected to an interface port (FastEthernet0/0) on the router. Switch 2 (switch port 8) and switch 3 (switch port 8) are connected to Switch 1 (switch ports 1 and 2). The hub has three computers plugged into it on ports 1, 2, and 3. The fourth port on the hub is connected to the router’s other interface port (FastEthernet0/1). Based on the configuration described here, how many broadcast domains are there within this network?
2
Which of the following wireless standards should you implement if the existing wireless network only allows for three non-overlapping channels, and you need additional non-overlapping channels to prevent interference with neighboring businesses in your office building?
802.11ac
Elizabeth was replacing a client’s security device that protects their DMZ. The client has an application that allows external users to access the application remotely. After replacing the devices, the external users cannot connect remotely to the application anymore. Which of the following devices was MOST likely misconfigured and is now causing a problem?
Firewall
A technician is testing a new web-based tool capable of generating an automatic teller machine (ATM) cash and service availability reports. A consortium of financial institutions developed the web-based tool. Which of the following cloud delivery models is being described in this scenario?
Community
What is a connectionless protocol?
ICMP
Your company’s security policy states that its workstations must hide their internal IP addresses whenever they make a network request across the WAN. You have been asked to recommend a technology that would BEST implement this policy. Which of the following is the BEST solution for you to recommend?
NAT
According to the OSI model, at which of the following layers is data encapsulated into a frame?
Layer 2
Michael has been tasked with assigning two IP addresses to WAN interfaces on connected routers. To conserve address space, which of the following subnet masks should he use for this subnet?
/30
A company wants to install a new wireless network. The network must be compatible with the 802.11ac protocol to obtain the maximum amount of throughput available. Which of the following frequencies will this wireless network utilize?
5.0 GHz
You have just finished installing a small network consisting of a router, a firewall, and a single computer. What type of physical network topology have you created in this scenario?
Bus
A network administrator has set up a firewall and entered only three rules allowing network traffic over ports 21, 110, and 25 to minimize the attack surface and better secure the network. Unfortunately, now the administrator is receiving complaints from users reporting that they cannot access any web pages using their URLs, such as DionTraining.com. Which of the following should the administrator do to correct this issue?
Add a rule to the ACL to allow traffic on ports 80 and 53
Your company hosts all of the company’s virtual servers internally in your own datacenter. If a total failure or disaster occurs, the server images can be restored on a cloud provider and accessed through a VPN. Which of the following types of cloud services is your company using in this scenario?
Public IaaS
A company has hired you to upgrade its aging network. The network currently uses static routing for the internal network, but the organization wants to reconfigure it to use a dynamic routing protocol. The new dynamic routing protocol must support IPv4 and VLSM, at a minimum. Based on the requirements provided, which of the following routing protocols should you enable and configure?
OSPF
Which of the following network topologies requires that all nodes have a point-to-point connection with every other node in the network?
Mesh
A technician needs to limit the amount of broadcast traffic on a network and allow different segments to communicate. Which of the following should the technician install to satisfy this requirement?
Add a multilayer switch and create a VLAN
Your co-worker has just installed an unmanaged 24-port switch. He is concerned with the amount of broadcast traffic that may exist when using this device. How many broadcast domains are created when using this single 24-port switch?
1
You are installing a Small Office/Home Office (SOHO) network consisting of a router with 2 ports, a switch with 8 ports, and a hub with 4 ports. The router has one port connected to a cable modem and one port connected to switch port #1. The hub’s first port is connected to switch port #2. Based on the description provided, how many collision domains exist in this network?
9
A technician is setting up a new network and wants to create redundant paths through the network. Which of the following should be implemented to prevent performance degradation within the network?
Spanning tree
A small real estate office has about 15 workstations and would like to use DHCP to assign classful IP addresses to each workstation. The subnet only has one octet for the host portion of each device. Which of the following IP addresses could be assigned as the default gateway?
192.168.0.1
A network technician is asked to redesign an Ethernet network before some new monitoring software is added to each network’s workstation. The new software will broadcast statistics from each host to a monitoring server for each of the company’s five departments. The added network traffic is a concern of management that must be addressed. How should the technician design the new network?
Place each department in a separate VLAN
Thomas has a server that streams media to the local network, and the device is currently visible on the network. All of the workstations on the LAN can ping the device, and all the firewalls are currently turned off. The goal is for the streaming media server to allow different workstations to watch the stream if they choose to subscribe to it. The streaming device appears to be functioning properly, but the media won’t stream when requested. Which of the following TCP/IP technologies is MOST likely not implemented properly?
Multicast
Which of the following wireless characteristic does channel bonding improve?
Connection speed
Your company is experiencing slow network speeds of about 54Mbps on their wireless network. You have been asked to perform an assessment on the existing wireless network and recommend a solution. You have recommended that the company upgrade to an 802.11n or 802.11ac wireless infrastructure to obtain higher network speeds. Which of the following technologies allows an 802.11n or 802.11ac network to achieve faster speeds?
MIMO
(This is a simulated Performance-Based Question.)
The company’s corporate headquarters provided your branch office a portion of their Class C subnet to use at a new office location. You must allocate the minimum number of addresses using CIDR notation to accommodate each department’s needs.
/28
You are currently working as a firewall technician. You have received a request to open up a few ports on the firewall to allow a newly VoIP system to operate properly. The installer has requested that the ports associated with SIP, RDP, H.323, and RTP be opened to allow the new system to operate properly. Which of these ports are NOT used by a typical VoIP system?
RDP
As you arrive to work this morning, you look up at the building and notice a microwave antenna pointing to another antenna on top of your company’s support building across the street. Which of the following network topologies does BEST represent this network connection over the microwave link?
Point to point
Which network device operates at Layer 2?
Switch
The company’s corporate headquarters provided your branch office a portion of their Class C subnet to use at a new office location. You must allocate the minimum number of addresses using CIDR notation to accommodate each department’s needs. What is the correct CIDR notation for the Human Resources (HR) department’s subnet, which requires 25 devices?
/27
(This is a simulated Performance-Based Question.) What ports do HTTPS and RDP utilize?
443, 3389
What type of cable would you use to connect a router to a switch?
Straight-through
Which of the following cloud infrastructures includes on-premise servers utilizing a centralized Syslog server hosted at a third-party organization to review the logs?
Hybrid
You have been asked to configure a router. Which of the following protocols should you enable to allow the router to determine the path to another network?
BGP
Which of the following ports should be allowed to provide access to certain VoIP applications?
5060
IPv4 addresses are written using Base 10 numbers, while IPv6 addresses are written in Base 16 numbers. What type of notation does Base16 utilize?
Hexadecimal
You have been asked to create an allow statement on the firewall’s ACL to allow NTP traffic to pass into the network. Which port should be included?
123
Your local city council is trying to revitalize the old downtown area. One council member believes that if they provided free wireless coverage throughout the entire old downtown area, it would attract more Generation Y and Millennials because they love being constantly connected to the internet. Which type of network geography does BEST describe this proposed large scale wireless network?
MAN
A network technician at a warehouse must implement a solution that will allow a company to track shipments as they enter and leave the facility. The warehouse workers must scan and concurrently upload large images of items to a centralized server. Which of the following technologies should they utilize to meet these requirements?
802.11ac
Which of the following technologies allows two or more links to pass network traffic as if they were one physical link?
LACP
Dion Training wants to purchase an email marketing solution to better communicate with their students. A promising new startup has a new offering to provide access to their product from a central location rather than requiring Dion Training to host the product on their internal network. Dion Training wants to ensure that their sensitive corporate information is not accessible by any startup’s other clients. Which type of cloud server should Dion Training look to purchase to meet these needs?
Private SaaS
You run the command IPCONFIG on your laptop and see that you have been assigned an IP address of 169.254.0.1. Which category of IPv4 address is this?
APIPA
You are setting up uplink ports for multiple switches to communicate with one another. All of the VLANs should communicate from the designated server switch. Which of the following should be set on the uplink ports if VLAN 1 is not the management VLAN?
STP
After installing some new switches in your network, you notice that a looping problem has begun to occur. You contact the manufacturer’s technical support for the switches you purchased, and they recommended that you enable 802.1d. Which of the following BEST represents why the manufacturer suggested this?
It is a version of spanning tree that use BPDU to detect problems
As part of unified communications services, QoS must be implemented to provide support for DSCP and CoS. Which of the following OSI layers does QoS operate within?
Layer 2
Your company wants to create highly-available data centers. Which of the following will allow the company to continue maintaining an Internet presence at all sites if the WAN connection at their own site goes down?
BGP
A client has asked you to provide their local office with the BEST solution for a wireless network based on their requirements. The client has stated that their users will need a wireless network that provides a maximum of 54 Mbps of bandwidth and operates in the 2.4Ghz frequency band. Which of the following wireless network types should you install to meet their needs?
802.11g
What is used to define how much bandwidth can be used by various protocols on the network?
Traffic shaping
The company’s corporate headquarters provided your branch office a portion of their Class C subnet to use at a new office location. You must allocate the minimum number of addresses using CIDR notation to accommodate each department’s needs. You have finished providing the minimum number of addresses using CIDR notation to each of the departments listed. Calculate the number of leftover IP addresses. What is the correct CIDR notation to use to represent the available number of leftover IP addresses?
/26
What type of cable would you use to connect a computer to a computer?
Crossover
(This is a simulated Performance-Based Question.)
What ports do SMTP and SNMP utilize?
25, 161
Dion Training has just installed a new web server and created an A record for DionTraining.com. When users try entering www.DionTraining.com, though, they get an error. You tell their network administrator that the problem is because he forgot to add the appropriate DNS record to create an alias for www to the domain’s root. Which type of DNS record should be added to fix this issue?
CNAME
You typed IPCONFIG at the command prompt and find out your IP is 192.168.1.24. You then go to Google.com and search for “what is my IP,” and it returns a value of 35.25.52.11. How do you explain the different values for the IP addresses?
This occurs because your network uses a private IP address internal but a public IP address over the internet
An administrator is told they need to set up space in the breakroom where employees can relax. So, the administrator sets up several televisions with interconnected video game systems in the breakroom. What type of network did the administrator setup?
LAN
Which network device operates at Layer 1?
Hub
Which of the following communication technologies are used by video conferencing systems to synchronize video streams and reduce bandwidth sent from a central location to subscribed devices?
Multicast
There are two switches connected using both a Cat 6 cable and a Cat 5e cable. Which type of problem might occur with this setup?
Switching loop
You were troubleshooting a recently installed NIC on a workstation and decided to ping the NIC’s loopback address. Which of the following IPv4 addresses should you ping?
127.0.0.1
Which of the following is a DNS record type?
PTR
Your company has just installed a brand new email server, but you determined that the server is unable to send emails to another server during the initial tests. You decided to check the firewall’s ACL to see if the server’s outgoing email is being blocked. Which of the following ports should you ensure is open and not blocked by the firewall?
25
During a business trip, Bobby connects to the hotel’s wireless network to send emails to some of his clients. The next day, Bobby notices that additional emails have been sent out from his account without consent. Which of the following protocols was MOST likely used to compromise Bobby’s email password utilizing a network sniffer?
HTTP
Johnny is trying to download a file from a remote FTP server but keeps receiving an error that a connection cannot be opened. Which of the following should you do FIRST to resolve the problem?
Ensure that port 20 is open
Dion Training Solutions wants to migrate their email server from an on-premise solution to a vendor-hosted web-based solution like G Suite or Gmail. Which of the following types of cloud models best describes this proposed solution?
SaaS
You are trying to select the BEST network topology for a new network based on the following requirements. The design must include redundancy using a minimum of two cables to create the network. The network should not be prone to congestion. Therefore each device must wait for its turn to communicate on the network by passing around a token. Which of the following topologies would BEST meet the client’s requirements?
Ring
You are performing a high-availability test of a system. As part of the test, you create an interruption on the fiber connection to the network, but the network traffic was not re-routed automatically. Which type of routing is the system utilizing?
Static
Andy is a network technician who is preparing to configure a company’s network. He has installed a firewall to allow for an internal DMZ and an external network. No hosts on the internal network should be directly accessible by their IP address from the Internet, but they should reach remote networks if they have been assigned an IP address within the network. Which of the following IP addressing solutions would work for this particular network configuration?
Private
A network technician just finished configuring a new interface on a router, but the client workstations do not receive the addressing information from the new interface. Which of the following should be added or changed to allow the workstations to connect to the new interface?
IP helper
