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CCNA COURSE FINAL EXAM > Question 61-120 CCNA > Flashcards

Question 61-120 CCNA Flashcards

1
Q

A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

A

DHCP

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2
Q

What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)

A. Switches become overloaded because they concentrate all the traffic from the attached subnets.
B. The ARP request is sent as a broadcast, and will flood the entire subnet.
C. The network may become overloaded because ARP reply messages have a very large payload due to the 48-bit MAC address and 32-bit IP address that they contain.
D. A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table.
E. All ARP request messages must be processed by all nodes on the local network.

A

B. The ARP request is sent as a broadcast, and will flood the entire subnet.

E. All ARP request messages must be processed by all nodes on the local network.

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3
Q

A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

netsh interface ipv6 show neighbor
arp -a
tracert
ping
ipconfig
nslookup
telnet

A

Ping
Ipconfig
Nslookup

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4
Q

During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?

A. analyze the destination IP address
B. switch the packet to the directly connected interface
C. look up the next-hop address for the packet
D. discard the traffic after consulting the route table

A

switch the packet to the directly connected interface

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5
Q

What characteristic describes antispyware?

A. applications that protect end devices from becoming infected with malicious software
B. a network device that filters access and traffic coming into a network
C. software on a router that filters traffic based on IP addresses or applications
D. a tunneling protocol that provides remote users with secure access into the network of an organization

A

applications that protect end devices from becoming infected with malicious software

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6
Q

A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen?

Telnet
AUX
SSH
Console

A

SSH

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7
Q

What are the two most effective ways to defend against malware? (Choose two.)

Implement a VPN.
Implement network firewalls.
Implement RAID.
Implement strong passwords.
Update the operating system and other application software.
Install and update antivirus software

A

Update the operating system and other application software.
Install and update antivirus software

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8
Q

Which type of security threat would be responsible if a spreadsheet add-on disables the local software firewall?

brute-force attack
Trojan horse
DoS
buffer overflow

A

Trojan Horse

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9
Q

Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss?

A. User Datagram Protocol field
B. transport layer error check field
C. flow control field
D. frame check sequence field
E. error correction process field

A

frame check sequence field

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10
Q

A network administrator is adding a new LAN to a branch office. The new LAN must support 4 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.248
255.255.255.0
255.255.255.128
255.255.255.192

A

255.255.255.248

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11
Q

What service is provided by POP3?

A. Retrieves email from the server by downloading the email to the local mail application of the client.
B. An application that allows real-time chatting among remote users.
C. Allows remote access to network devices and servers.
D. Uses encryption to provide secure remote access to network devices and servers

A

Retrieves email from the server by downloading the email to the local mail application of the client.

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12
Q

What two security solutions are most likely to be used only in a corporate environment? (Choose two.)

antispyware
virtual private networks
intrusion prevention systems
strong passwords
antivirus software

A

virtual private networks
intrusion prevention systems

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13
Q

What characteristic describes antivirus software?

A. applications that protect end devices from becoming infected with malicious software
B. a network device that filters access and traffic coming into a network
C. a tunneling protocol that provides remote users with secure access into the network of an organization
D. software on a router that filters traffic based on IP addresses or applications

A

applications that protect end devices from becoming infected with malicious software

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14
Q

What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?

A. It checks the value of the TTL field and if it is 0, it discards the packet and sends a Destination Unreachable message to the source host.
B. It checks the value of the TTL field and if it is 100, it discards the packet and sends a Destination Unreachable message to the source host.
C. It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.
D. It increments the value of the TTL field by 1 and if the result is 100, it discards the packet and sends a Parameter Problem message to the source host.

A

It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.

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15
Q

A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting?

DNS
DHCP
SMTP
TFTP

A

TFTP

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16
Q

An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.)

A. Configure DNS on the router.
B. Generate two-way pre-shared keys.
C. Configure the IP domain name on the router.
D. Generate the SSH keys.
E. Enable inbound vty SSH sessions.
F. Enable inbound vty Telnet sessions.

A

C. Configure the IP domain name on the router.
D. Generate the SSH keys.
E. Enable inbound vty SSH sessions

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17
Q

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

A. handles communication between upper layer networking software and Ethernet NIC hardware
B. implements trailer with frame check sequence for error detection
C. places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
D. implements a process to delimit fields within an Ethernet 2 frame
E. adds Ethernet control information to network protocol data

A

B. implements trailer with frame check sequence for error detection
D. implements a process to delimit fields within an Ethernet 2 frame

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18
Q

An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet?​

A. all IPv6 enabled devices on the local link​
B. all IPv6 DHCP servers​
C.all IPv6 enabled devices across the network​
D. all IPv6 configured routers on the local link​

A

all IPv6 configured routers on the local link​

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19
Q

What are the three parts of an IPv6 global unicast address? (Choose three.)

subnet ID
subnet masks
broadcast address
global routing prefix
interface ID

A

Subnet ID
Global routing prefix
Interface ID

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20
Q

A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)

extensive cabling
mobility options
packet collision
interference
security
coverage area

A

interference
security
coverage area

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21
Q

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?

Enter CTRL-Z at the privileged mode prompt.
Exit global configuration mode.
Power cycle the device.
Reboot the device.
Exit privileged EXEC mode and press Enter .

A

Exit privileged EXEC mode and press Enter

22
Q

What method is used to manage contention-based access on a wireless network?

token passing
CSMA/CA
priority ordering
CSMA/CD

A

CSMA/CA

23
Q

What is a function of the data link layer?

A. provides the formatting of data
B. provides end-to-end delivery of data between hosts
C. provides delivery of data between two applications
D. provides for the exchange of frames over a common local media

A

provides for the exchange of frames over a common local media

24
Q

What is the purpose of the TCP sliding window?

A. to ensure that segments arrive in order at the destination
B. to end communication when data transmission is complete
C. to inform a source to retransmit data from a specific point forward
D. to request that a source decrease the rate at which it transmits data

A

to request that a source decrease the rate at which it transmits data

25
Q

What characteristic describes spyware?

A. a network device that filters access and traffic coming into a network
B.software that is installed on a user device and collects information about the user
C. an attack that slows or crashes a device or network service
D. the use of stolen credentials to access private data

A

software that is installed on a user device and collects information about the user

26
Q

Which switching method drops frames that fail the FCS check?

store-and-forward switching
borderless switching
ingress port buffering
cut-through switching

A

store-and-forward switching

27
Q

Which range of link-local addresses can be assigned to an IPv6-enabled interface?

FEC0::/10
FDEE::/7
FE80::/10
FF00::/8

A

FE80::/10

28
Q

What service is provided by FTP?

A. A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
B. An application that allows real-time chatting among remote users.
C. Allows for data transfers between a client and a file server.
D. Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.

A

Allows for data transfers between a client and a file server.

29
Q

A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access? (Choose two.)

DNS server
source port number
HTTP server
source MAC address
default gateway

A

DNS server
Default gateway

30
Q

Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.)

A. NAT adds authentication capability to IPv4.
B. NAT introduces problems for some applications that require end-to-end connectivity.
C. NAT will impact negatively on switch performance.
D. NAT provides a solution to slow down the IPv4 address depletion.
E. NAT improves packet handling.
F. NAT causes routing tables to include more information.

A

B. NAT introduces problems for some applications that require end-to-end connectivity.

D. NAT provides a solution to slow down the IPv4 address depletion.

31
Q

What would be the interface ID of an IPv6 enabled interface with a MAC address of 1C-6F-65-C2-BD-F8 when the interface ID is generated by using the EUI-64 process?

0C6F:65FF:FEC2:BDF8
1E6F:65FF:FEC2:BDF8
C16F:65FF:FEC2:BDF8
106F:65FF:FEC2:BDF8

A

1E6F:65FF:FEC2:BDF8

32
Q

What service is provided by BOOTP?

A. Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.
B. Allows for data transfers between a client and a file server.
C. Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network.
D. A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

A

Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network.

33
Q

What characteristic describes adware?

A. a network device that filters access and traffic coming into a network
B. software that is installed on a user device and collects information about the user
C. the use of stolen credentials to access private data
D. an attack that slows or crashes a device or network service

A

software that is installed on a user device and collects information about the user

34
Q

When a switch configuration includes a user-defined error threshold on a per-port basis, to which switching method will the switch revert when the error threshold is reached?

cut-through
store-and-forward
fast-forward
fragment-free

A

Store-and-forward

35
Q

Place the options in the following order:peer-to-peer network
A. no dedicated server is required
B. client and server roles are set on a per request basis
C. requires a specific user interface
D. a background service is required

A

no dedicated server is required
client and server roles are set on a per request basis

36
Q

What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.)

error detection
frame delimiting
accessing the media
data encapsulation
logical addressing

A

accessing the media
data encapsulation

37
Q

What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64?

2001:DA48::/64​
2001:DA48:FC5::A4:/64​
2001:DA48:FC5:A4::/64​
2001::/64

A

2001:DA48:FC5:A4::/64

38
Q

packet filtering – prevents access based on IP or MAC address
URL filtering – prevents access to websites
network address translator – (none)
stateful packet inspection – prevents unsolicited incoming sessions
application filtering – prevents access by port number

A

packet filtering – prevents access based on IP or MAC address
URL filtering – prevents access to websites
network address translator – (none)
stateful packet inspection – prevents unsolicited incoming sessions
application filtering – prevents access by port number

39
Q

Users are reporting longer delays in authentication and in accessing network resources during certain time periods of the week. What kind of information should network engineers check to find out if this situation is part of a normal network behavior?

syslog records and messages
the network performance baseline
debug output and packet captures
network configuration files

A

the network performance baseline

40
Q

How does the service password-encryption command enhance password security on Cisco routers and switches?

A. It requires encrypted passwords to be used when connecting remotely to a router or switch with Telnet.
B. It encrypts passwords that are stored in router or switch configuration files.
C. It requires that a user type encrypted passwords to gain console access to a router or switch.
D. It encrypts passwords as they are sent across the network.

A

It encrypts passwords that are stored in router or switch configuration files.

41
Q

Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.)

A.The Source Address field name from IPv4 is kept in IPv6.
B. The Version field from IPv4 is not kept in IPv6.
C. The Destination Address field is new in IPv6.
D. The Header Checksum field name from IPv4 is kept in IPv6.
E. The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6.

A

A. The Source Address field name from IPv4 is kept in IPv6.

E. The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6.

42
Q

A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices:
IP phones – 22 addresses
PCs – 20 addresses needed
Printers – 2 addresses needed
Scanners – 2 addresses needed

The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks?

255.255.255.192
255.255.255.252
255.255.255.240
255.255.255.248
255.255.255.0
255.255.255.224

A

255.255.255.224

43
Q

What characteristic describes identity theft?

A. the use of stolen credentials to access private data
B. software on a router that filters traffic based on IP addresses or applications
C. software that identifies fast-spreading threats
D. a tunneling protocol that provides remote users with secure access into the network of an organizationWhat characteristic describes identity theft?

the use of stolen credentials to access private data
software on a router that filters traffic based on IP addresses or applications
software that identifies fast-spreading threats
a tunneling protocol that provides remote users with secure access into the network of an organization

A

the use of stolen credentials to access private data

44
Q

A network administrator is adding a new LAN to a branch office. The new LAN must support 200 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.240
255.255.255.0
255.255.255.248
255.255.255.224

A

255.255.255.0

45
Q

What are three commonly followed standards for constructing and installing cabling? (Choose three.)

cost per meter (foot)
cable lengths
connector color
pinouts
connector types
tensile strength of plastic insulator,

A

cable lengths
Pinouts
Connector types

46
Q

A client packet is received by a server. The packet has a destination port number of 143. What service is the client requesting?

IMAP
FTP
SSH
Telnet

A

IMAP

47
Q

What are two characteristics shared by TCP and UDP? (Choose two.)

default window size
connectionless communication
port numbering
3-way handshake
ability to to carry digitized voice
use of checksum

A

port numbering
use of checksum

48
Q

A client packet is received by a server. The packet has a destination port number of 21. What service is the client requesting?

FTP
LDAP
SLP
SNMP

A

FTP

49
Q

What attribute of a NIC would place it at the data link layer of the OSI model?

attached Ethernet cable
IP address
MAC address
RJ-45 port
TCP/IP protocol stack

A

MAC address

50
Q

A network administrator is adding a new LAN to a branch office. The new LAN must support 10 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.192
255.255.255.248
255.255.255.224
255.255.255.240

A

255.255.255.240

51
Q

What technique is used with UTP cable to help protect against signal interference from crosstalk?

A. wrapping a foil shield around the wire pairs
B. twisting the wires together into pairs
C. terminating the cable with special grounded connectors
D. encasing the cables within a flexible plastic sheath

A

twisting the wires together into pairs

CCNA COURSE FINAL EXAM (4 decks)

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