CCNA 1 v7 Modules 8 - 10 Free Exam Answers - CCNAEXAM.NET (2023)

1. What information do routers use to forward a data packet to its destination?

Ursprungs IP-Addresse
Destination IP address*
Source data link address
destination data connection address

2. A computer must send a packet to a destination host on the same LAN. How is the package shipped?

The packet is first sent to the default gateway and, depending on the gateway's response, may be forwarded to the destination host.
The packet is sent directly to the destination host.*
The packet is first sent to the default gateway and then sent from the default gateway directly to the destination host.
The packet is only sent to the default gateway.

3. A router receives a packet on interface Gigabit 0/0 and determines that the packet should be forwarded on interface Gigabit 0/1. which

What does the router do next?
Route packet out of Gigabit 0/1 interface
Create a new Ethernet Layer 2 frame to send to destination*
Check the ARP cache to find the destination IP address
Check the routing table to see if the destination network is in the routing table

4. What IPv4 address can a host use to ping the loopback interface?

126.0.0.1
127.0.0.0
126.0.0.0
127.0.0.1*

5. A computer can access devices on the same network, but not devices on other networks. What is the likely cause of this problem?

The cable is not properly connected to the network card.
The computer has an invalid IP address.
The computer has an incorrect subnet mask.
The computer has an invalid default gateway address.*

6. Which statement describes a property of the IP protocol?

The IP encapsulation is modified depending on the network media.
IP relies on Layer 2 protocols to handle transmission errors.
MAC addresses are used when encapsulating IP packets.
IP relies on higher-layer services to handle lost or out-of-service packet situations.*

Explanation:The IP protocol is a connectionless protocol that is considered unreliable in terms of end-to-end transmission. It does not provide error handling in cases where received packets are out of order or in cases of missing packets. It relies on higher layer services like TCP to solve these problems.

7. Why is NAT not required in IPv6?

Since IPv6 has built-in security, there is no need to hide IPv6 addresses from internal networks.
Any host or user can obtain a public IPv6 network address, as the number of available IPv6 addresses is extremely large.*
Problems caused by NAT applications are solved because the IPv6 header improves packet handling by intermediate routers.
End-to-end connectivity issues caused by NAT are resolved as the number of routes increases with the number of nodes connected to the Internet.

8. What parameters does the router use to select the route to the destination when multiple routes are available?

the lowest metric value associated with the target network*
the lower gateway IP address to reach the destination network
the highest metric value associated with the target network
the highest gateway IP address to reach the destination network

9. What are the two services provided by the OSI network layer? (Choose two.)

Run error detection
Routing packets to destination*
Encapsulate transport layer PDU*
media framing
collision detection

Explanation:The OSI network layer provides several services to enable communication between devices:
addressing
encapsulation
routing
uncoating
Error detection, media framing, and collision detection are functions of the data ink layer.

10. What is the purpose of configuring a switch with a default gateway address on a production network?

Hosts connected to the switch can use the switch's default gateway address to forward packets to a remote destination.
A switch must have a default gateway for Telnet and SSH to access it.
The default gateway address is used to forward packets originating from the switch to remote networks.*
It provides a next-hop address for all traffic flowing through the switch.

Explanation:A default gateway address allows a switch to forward packets originating from the switch to distant networks. A default gateway address on a switch does not provide Layer 3 routing for PCs connected to that switch. A switch can still be reached from Telnet as long as the source of the Telnet connection is on the local network.

11. What is the fundamental characteristic of the IP protocol?

No connection*
media dependent
User data segmentation
reliable end-to-end delivery

Explanation:Internet Protocol (IP) is a network layer protocol that does not require an initial exchange of control information to establish an end-to-end connection before forwarding packets. As such, IP is connectionless and does not provide reliable end-to-end delivery by itself. IP is media independent. Segmentation of user data is a service provided at the transport layer.

12. Which field in the IPv4 header is used to prevent a packet from traversing a network indefinitely?

Time to live*
sequence of numbers
confirmation number
Differentiated Services

Explanation:The value of the Time to Live (TTL) field in the IPv4 header is used to limit the lifetime of a packet. The sending host sets the initial TTL value; which is decremented by one each time a router processes the packet. When the TTL field drops to zero, the router discards the packet and sends a timed-out Internet Control Message Protocol (ICMP) message to the source IP address. The Differentiated Services (DS) field is used to determine the priority of each packet. The sequence number and the acknowledgment number are two fields in the TCP header.

13. What is the advantage of IPv6's simplified header over IPv4?

smaller header
little requirement for checksum processing
lower source and destination IP addresses
efficient package handling*

Explanation:The simplified IPv6 header offers several advantages over IPv4:
Better routing efficiency and efficient packet processing for performance and forward rate scalability
There are no requirements to process checksums
Streamlined and more efficient extension header mechanisms (as opposed to IPv4 option field)
A flow label field for per-flow processing without having to open the inner transport packet to identify the different traffic flows

14. Which IPv4 header field identifies the upper layer protocol carried in the packet?

Protocol*
I COULD
execution
Differentiated Services

Explanation:It is the protocol field in the IP header that identifies the upper layer protocol carrying the packet. The version field identifies the IP version. The Differential Services field is used to define the priority of packages. The identification field is used to reorder fragmented packets.

15. Check out the exhibition. Map the packets with their destination IP address to the outgoing interfaces on the router. (Not all targets are used.)

Explanation:Packets destined for 172.17.6.15 are forwarded via Fa0/0. Packets destined for 172.17.10.5 are forwarded via Fa1/1. Packets destined for 172.17.12.10 are forwarded via Fa1/0. Packets destined for 172.17.14.8 are forwarded via Fa0/1. Since network 172.17.8.0 has no entry in the routing table, it will use the gateway of last resort, which means that packets with destination 172.17.8.20 will be forwarded via Serial0/0/0. Since there is a gateway of last resort, packets are not dropped.

16. What information does the loopback test provide?

The TCP/IP stack on the device is working correctly.*
The device has end-to-end connectivity.
DHCP is working correctly.
The ethernet cable works fine.
The device has the correct IP address on the network.

17. Which routing table entry has a next-hop address associated with a destination network?

directly connected routes
local routes
distant broken*
C and L source paths

18. How do hosts ensure their packets reach the correct network destination?

You must maintain your own local routing table, which includes a route to the loopback interface, a local network route, and a default remote route.*
They always forward their packets to the default gateway responsible for packet delivery.
They look in their own local routing table for a route to the network's destination address and pass that information on to the default gateway.
They send a query packet to the default gateway, asking for the best route.

19. When transporting data from real-time applications such as streaming audio and video, which IPv6 header field can be used to inform routers and switches to keep the same path for packets in the same conversation?

next title
flow label*
traffic class
Differentiated Services

Explanation:The flow label in the IPv6 header is a 20-bit field that provides a special service for real-time applications. This field can be used to inform routers and switches to keep the same path for packet flow so packets are not reordered.

20. Which statement describes the function of the Address Resolution Protocol?

ARP is used to discover the IP address of any host on another network.
ARP is used to discover the IP address of any host on the local network.
ARP is used to discover the MAC address of any host on another network.
ARP is used to discover the MAC address of any host on the local network.*

21. Under what two circumstances does a switch flood a frame from all ports except the port on which the frame was received? (Choose two.)

The frame has the broadcast address as the destination address.*
The destination address is unknown to the switch.*
The source address in the frame header is the broadcast address.
The source address in the frame is a multicast address.
The destination address in the frame is a known unicast address.

Explanation:A switch floods a frame from all ports except the one on which the frame was received under two circumstances. The frame has the broadcast address as the destination address or the destination address is unknown to the switch.

22. Which statement describes how to handle ARP requests on the local link?

They must be forwarded by all routers on the local network.
They are received and processed by all devices on the local network.*
They are excluded from all switches on the LAN.
They are only received and processed by the target device.

Explanation:One of the negative issues with ARP requests is that they are broadcast. This means that all devices on the local link must receive and process the request.

23. What destination address is used in an ARP request frame?

0.0.0.0
255.255.255.255
FFFF.FFFF.FFFF*
AAAA.AAAA.AAAA
the physical address of the destination host

Explanation:The purpose of an ARP request is to find the MAC address of the destination host on an Ethernet LAN. The ARP process sends a Layer 2 broadcast to all devices on the Ethernet LAN. The frame contains the destination IP address and the broadcast MAC address FFFF.FFFF.FFFF. The host with the IP address that matches the IP address in the ARP request responds with a unicast frame containing the MAC address of the host. Therefore, the original sending host obtains the destination IP and MAC address pair to continue the tunneling process for data transmission.

24. A network engineer issues the arp -d * command on a PC after reconfiguring the router connected to the LAN. What is the output after issuing this command?

The ARP cache will be cleared.*
The current contents of the ARP cache are displayed.
Detailed information about the ARP cache is displayed.
The ARP cache is synchronized with the router interface.

Explanation:Issuing thearp –d * command on a PC clears the contents of the ARP cache. This is useful when a network engineer wants to ensure that the cache is filled with up-to-date information.

25. Check out the exhibition.

The display shows a small switched network and the contents of the switch's MAC address table. PC1 sent a frame addressed to PC3. What does the switch do with the frame?

The switch discards the frame.
The switch just forwards the frame to port 2.
The switch forwards the frame to all ports except port 4.*
The switch forwards the frame to all ports.
The switch just forwards the frame to ports 1 and 3.

Explanation:PC3's MAC address does not exist in the switch's MAC table. Since the switch doesn't know where to send the frame on PC3, it forwards the frame to all ports on the switch except port 4, the input port.

26. What are the two types of IPv6 messages used instead of ARP for address resolution?

Anycast
streaming
echo reply
echo request
Neighbor Request*
neighbor's display*

Explanation:IPv6 does not use ARP. Instead, ICMPv6 Neighbor Discovery is used by sending Neighbor Request messages and Neighbor Advertisements.

27. What is the purpose of an ARP spoofing attack?

flood the network with ARP reply broadcasts
to populate switch MAC address tables with spoofed addresses
to map IP addresses to the wrong MAC address*
overload hosts on the network with ARP requests

28. Check out the exhibition.

PC1 attempts to connect to File_server1 and sends an ARP request to obtain a destination MAC address. What MAC address does PC1 get in the ARP reply?

the MAC address of S1
the MAC address of interface G0/0 on R1*
the MAC address of interface G0/0 on R2
the MAC address of S2
the MAC address of File_server1

29. Where are IPv4 addresses to Layer 2 Ethernet address mappings kept on a host computer?

neighbors table
Hidden ARP*
routing table
MAC address table

30. What important information does a Layer 2 device look for in the Ethernet frame header to forward the data?

Quell-MAC-Address
Ursprungs IP-Addresse
Destination MAC Address*
Tipo Ethernet
destination IP address

Explanation:The layer 2 device, e.g. a switch, uses the destination MAC address to determine which path (interface or port) to use to send data to the destination device.

31. Match the commands with the correct actions. (Not all options are used.)

32. A new network administrator was asked to insert a banner message on a Cisco device. What is the fastest way for a network administrator to test that the banner is set correctly?

Restart the device.
At the privileged mode prompt, type CTRL-Z.
Exit global configuration mode.
Turn off the device and turn it on again.
Exit privileged EXEC mode and press Enter.*

Explanation:At the privileged mode prompt, for example B. Router#, type exit, press Enter and the banner message will appear. A network device that had the banner motd command to power off and on will also display the banner message, but this is not a quick way to test the configuration.

33. A network administrator needs access to manage routers and switches locally and remotely. Match the description with the access method. (Not all options are used.)

Explanation:Both the console and AUX ports can be used to connect directly to a Cisco network device for management purposes. However, it is more common to use the console port. The AUX port is most commonly used for remote access over a dial-up connection. SSH and Telnet are remote access methods that rely on an active network connection. SSH uses stronger password authentication than Telnet and also uses encryption of transmitted data.

34. Map the phases to functions during the startup process of a Cisco router. (Not all options are used.)

Explanation:The startup process for a Cisco router consists of three main phases:
1. POST and load bootstrap.
2. Locate and load the Cisco IOS software.
3. Locate and load the startup configuration file
If no startup configuration file can be found, the router will enter configuration mode displaying the configuration mode prompt.

35. Map the command to the device mode in which the command is entered. (Not all options are used.)

Explanation:The release command is entered in the R1> mode. The login command is entered in mode R1 (configuration line) #. The copy running-config startup-config command is entered in R1# mode. The IP address 192.168.4.4 255.255.255.0 command is entered in R1(config-if)# mode. The service password encryption command is entered in global configuration mode.

36. What are the two functions of NVRAM? (Choose two.)

to save the routing table
to retain contents when power is lost*
to save boot configuration file*
to contain the running configuration file
to save the ARP table

Explanation:NVRAM is non-volatile memory, so the startup configuration file persists even if the router loses power.

37. A router boots up and enters configuration mode. What is the reason for this?

The IOS image is corrupted.
Cisco IOS is missing flash memory.
Missing NVRAM configuration file.*
The POST process has detected a hardware error.

38. The ip default-gateway 172.16.100.1 global configuration command is applied to a switch. What does this command do?

The switch will have a management interface at address 172.16.100.1.
The switch can be managed remotely from a host on a different network.*
The switch can communicate with other hosts on the 172.16.100.0 network.
The switch is limited to sending and receiving frames to and from gateway 172.16.100.1.

Explanation:Typically, all devices have a default gateway address configured so that they can communicate beyond their local network. On a switch, this is done with the ip default-gateway command.

39. What happens when the ssh command to the transport entry is entered on the switch vty lines?

The SSH client on the switch is enabled.
Communication between the switch and remote users is encrypted.*
The switch requires a username and password combination for remote access.
The switch requires remote connections through proprietary client software.

Explanation:The ssh command's transport entry encrypts all incoming controlled telnet connections when entered into the vty switch (virtual terminal lines).

40. Look at the exhibit.

A user's PC successfully transmitted packets to www.cisco.com. What IP address does the user's PC point to to route their data outside the local network?

172.24.255.17
172.24.1.22
172.20.0.254*
172.24.255.4
172.20.1.18

41. Associate the configuration mode with the command available in that mode. (Not all options are used.)

Explanation:The activation command is entered at the R1> prompt. The login command is entered at the R1 prompt (configuration line) #. The copy running-config startup-config command is entered at the R1# prompt. The interface fastethernet 0/0 command is entered at the R1(config)# prompt.

42. What are the three commands used to configure secure access to a router through a console port connection? (Choose three.)

Interface fast ethernet 0/0
vty-Lines 0 4
console line 0*
activate cisco secret
Access*
Cisco Password*

Explanation:The three commands needed to password protect the console port are as follows:
console line 0
cisco password
Access
The command "interface fastethernet 0/0" is often used to access configuration mode, which is used to apply certain parameters such as the IP address to port Fa0/0. The line vty 0 4 command is used to enter telnet configuration mode. Parameters 0 and 4 specify ports 0 through 4 or a maximum of five simultaneous Telnet connections. The enable secret command is used to enforce a password used on the router to access privileged mode.

43. Look at the exhibit.

See the IP address configuration shown on PC1. What is a default gateway address description?

This is the IP address of the Router1 interface that connects the enterprise to the internet.
This is the IP address of the Router1 interface that connects PC1's LAN to Router1.*
It is the IP address of Switch1 which connects PC1 to other devices on the same LAN.
It is the IP address of the ISP's network device located in the cloud.

44. What are the two main functions of a router? (Choose two.)

packet forwarding*
microsegmentation
domain name resolution
path selection*
flux control

Explanation:A router accepts a packet and accesses its routing table to determine the appropriate output interface based on the destination address. The router then forwards the packet on that interface.

45. What does using the Router# copy running-config startup-config command do on a router?

ROM content changes.
RAM content changes.
NVRAM content changes.*
Flash content changes.

Explanation:The copy running-config startup-config command copies the running configuration file from RAM to NVRAM and saves it as the startup configuration file. Since NVRAM is non-volatile memory, it can retain configuration details when the router is powered down.

46. ​​​​​​​​​​What happens if the default gateway address is set incorrectly on a host?

The host cannot communicate with other hosts on the local network.
The switch does not forward host-initiated packets.
The host must use ARP to determine the correct default gateway address.
The host cannot communicate with hosts on other networks.*
A ping from the host to 127.0.0.1 would not be successful.

Explanation:If a host needs to send a message to another host on the same network, it can forward the message directly. However, when a host needs to send a message to a remote network, it needs to use the router, also known as the default gateway. This is because the data link frame address of the remote destination host cannot be used directly. Instead, the IP packet must be sent to the router (default gateway) and the router forwards the packet to its destination. Therefore, if the default gateway is configured incorrectly, the host will be able to communicate with other hosts on the same network, but not with hosts on remote networks.

47. What are two possible network problems that can result from the ARP operation? (Choose two.)

Manually configuring static ARP mappings can facilitate ARP poisoning or MAC address spoofing.
On large, low-bandwidth networks, multiple ARP transmissions can cause delays in data communication.*
Network attackers can manipulate IP and MAC address assignments in ARP messages with the intent of intercepting network traffic.*
A large number of ARP request transmissions can cause the host's MAC address table to overflow and prevent the host from communicating on the network.
Multiple ARP responses result in the switch's MAC address table containing entries that correspond to the MAC addresses of hosts connected to the corresponding switch port.

Explanation:A large number of broadcast ARP messages can cause temporary delays in data communication. Network attackers can manipulate IP and MAC address assignments in ARP messages with the intent of intercepting network traffic. ARP requests and responses cause entries to be made in the ARP table, not the MAC address table. ARP table overflows are very unlikely. Manually configuring static ARP mappings is a way to prevent, not facilitate, ARP poisoning and MAC address spoofing. Normal switch frame-forwarding operations require multiple ARP responses, resulting in the switch MAC address table containing entries that correspond to the MAC addresses of the connected nodes and mapped to the appropriate switch port. It is not a network problem caused by ARP.

48. Open the PT activity. Complete the tasks in the activity guide and answer the question.
Which interfaces on each router are up and operational?

R1: G0/0 e S0/0/0
R2: G0/0 e S0/0/0

R1: G0/1 e S0/0/1
R2: G0/0 e S0/0/1

R1: G0/0 e S0/0/0
R2: G0/1 e S0/0/0**

R1: G0/0 e S0/0/1
R2: G0/1 e S0/0/1

Explanation:The command to use for this activity is show ip interface brief on each router. Active and functional interfaces are represented by the value "up" in the "Status" and "Protocol" columns. The interfaces on R1 with these properties are G0/0 and S0/0/0. In R2 they are G0/1 and S0/0/0.

49. Which term describes a field in the IPv4 packet header used to identify the next-level protocol?

Protocol*
Destination IPv4 address
Source IPv4 address
TTL

50. Which term describes a field in the IPv4 packet header that contains an 8-bit binary value used to determine the priority of each packet?

differentiated services*
Destination IPv4 address
Source IPv4 address
Protocol

51. Which term describes a field in the IPv4 packet header that contains a 32-bit binary value that maps to an interface on the sending device?

Source IPv4 Address*
Destination IPv4 address
Protocol
TTL

52. Which term describes a field in the IPv4 packet header used to detect IPv4 header corruption?

header checksum*
Source IPv4 address
Protocol
TTL

53.

RTR1(config)# Interface gi0/1RTR1(config-if)# Description Connect to Marketing LANRTR1(config-if)# IP address 10.27.15.17 255.255.255.0RTR1(config-if)# without shutdownRTR1(config-if)# Interface gi0/0RTR1(config-if)# Description Connect to payroll LANRTR1(config-if)# IP address 10.27.14.148 255.255.255.0RTR1(config-if)# without shutdownRTR1(config-if)# Interface s0/0/ 0RTR1 ( config-if)# description Connect to IP address ISPRTR1(config-if)# 10.14.15.254 255.255.255.0RTR1(config-if)# without shutdownRTR1(config-if)# interface s0/0/1RTR1(config- 255.255 .0RTR1 (config-if)# if)# if)# Description Connects to the panel WANRTR1(config-if)# IP address 203.0.113.39 255.255.255.0RTR1(config-if)# no shutdownRTR1(config-if)# end

See the presentation. A network administrator connects a new host to the payroll LAN. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

27.10.14.148*
27.10.14.1
10.14.15.254
203.0.113.39
27.15.17

54. Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address?

Destination IPv4 Address*
Protocol
TTL
Header-Prüfsumme

55. Which term describes a field in the IPv4 packet header used to limit the lifetime of a packet?

TTL*
Source IPv4 address
Protocol
Header-Prüfsumme

56. Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100?

Execution*
Source IPv4 address
Protocol
TTL

57. Which term describes a field in the IPv4 packet header used to identify the next-level protocol?

Protocol*
execution
differentiated services
Header-Prüfsumme

58. Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100?

Execution*
differentiated services
Header-Prüfsumme
TTL

59. Which property of ARP causes cached IP-to-MAC mappings to remain in memory longer?

Entries in an ARP table are timestamped and removed after the timeout expires.*
An IP address entry for static MAC can be manually entered into an ARP table.
The 0x806 type field appears in the Ethernet frame header.
The port to MAC address table on a switch has the same entries as the ARP table on the switch.

60. Which property of ARP allows specifying MAC addresses of frequently used servers in the ARP table?

An IP address entry for static MAC can be manually entered into an ARP table.*
Entries in an ARP table are timestamped and removed after the timeout expires.
The 0x806 type field appears in the Ethernet frame header.
The port to MAC address table on a switch has the same entries as the ARP table on the switch.

61. Which property of ARP allows specifying MAC addresses of frequently used servers in the ARP table?

An IP address entry for static MAC can be manually entered into an ARP table.*
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
The source MAC address appears in the Ethernet frame header.
The port to MAC address table on a switch has the same entries as the ARP table on the switch.

62. What property of ARP allows hosts on a LAN to send traffic to distant networks?

Local hosts learn the MAC address of the default gateway.*
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
The source MAC address appears in the Ethernet frame header.
The port to MAC address table on a switch has the same entries as the ARP table on the switch.

63.

Floor(config)# interface gi0/1Floor(config-if)# Description Connect to recorder LANFloor(config-if)# IP address 192.168.235.234 255.255.255.0Floor(config-if)# no shutdownFloor(config-if ) # Interface gi0/0Floor(config-if)# Description Connects to LANFloor(config-if) manager# IP address 192.168.234.114 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# Interface s0/ 0/ 0Floor (config-if)# Description Connection to ISPFloor(config-if)# IP address 10.234.235.254 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# Interface s0/0/1Floor( config-if) ) # if)# description Connects to the panel WANFloor(config-if)# IP address 203.0.113.3 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# end

See the presentation. A network administrator connects a new host to the registrar's LAN. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

192.168.235.234*
192.168.235.1
10.234.235.254
203.0.113.3
192.168.234.114

64. Which ARP property forces all Ethernet NICs to process an ARP request?

The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.*
The source MAC address appears in the Ethernet frame header.
The 0x806 type field appears in the Ethernet frame header.
ARP replies are broadcast on the network when a host receives an ARP request.

65. Which ARP property causes a response only for the source sending an ARP request?

The source MAC address appears in the header of the Ethernet frame.*
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
The 0x806 type field appears in the Ethernet frame header.
ARP replies are broadcast on the network when a host receives an ARP request.

66. Which ARP property causes the request to leave all ports on a switch except the port receiving the ARP request?

The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.*
The 0x806 type field appears in the Ethernet frame header.
Entries in an ARP table are timestamped and removed after the timeout expires.
ARP replies are broadcast on the network when a host receives an ARP request.

67. Which ARP property causes NICs that receive an ARP request to forward the data portion of the Ethernet frame to the ARP process?

The 0x806 type field appears in the Ethernet frame header.*
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
Entries in an ARP table are timestamped and removed after the timeout expires.
ARP replies are broadcast on the network when a host receives an ARP request.

68. Which ARP property causes NICs that receive an ARP request to forward the data portion of the Ethernet frame to the ARP process?

The 0x806 type field appears in the Ethernet frame header.*
The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.
Entries in an ARP table are timestamped and removed after the timeout expires.
The port to MAC address table on a switch has the same entries as the ARP table on the switch.

69.

Main(config)# interface gi0/1Main(config-if)# descrição Conectar ao serviço LANMain(config-if)# endereço IP 172.29.157.156 255.255.255.0Main(config-if)# no shutdownMain(config-if)# interface gi0/0Main(config-if)# description Verbindet mit Engineering-LANMain(config-if)# IP-Adresse 172.29.156.36 255.255.255.0Main(config-if)# kein HerunterfahrenMain(config-if)# Schnittstelle s0/0/ 0Main ( config-if)# description Verbindet mit ISPMain(config-if)# IP-Adresse 10.156.157.254 255.255.255.0Main(config-if)# no shutdownMain(config-if)# interface s0/0/1Main(config- if)# Endereço IP 198.51.100.177 255.255.255.0Main(config-if)# no shutdownMain(config-if)# end

See the presentation. A network administrator connects a new host to the service LAN. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

172.29.157.156*
172.29.157.1
10.156.157.254
198.51.100.177
172.29.156.36

70.

BldgA(config)# Interface gi0/1BldgA(config-if)# Description Connect to LANBldgA(config-if)# IP address 192.168.191.189 255.255.255.0BldgA(config-if)# without shutdownBldgA(config-if)# Interface gi0 /0BldgA(config-if)# Description Connect to client LANBldgA(config-if)# IP address 192.168.190.70 255.255.255.0BldgA(config-if)# no shutdownBldgA(config-if)# Interface s0 /0 / 0BldgA( config -if)# description Connect to ISPBldgA(config-if)# IP address 10.190.191.254 255.255.255.0BldgA(config-if)# no shutdownBldgA(config-if)# interface s0/0/1BldgA (config-if) # description Connect to panel WANBldgA(config-if)# IP address 198.51.100.213 255.255.255.0BldgA(config-if)# no shutdownBldgA(config-if)# end

See the presentation. A network administrator connects a new host to the medical LAN. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

192.168.191.189*
192.168.191.1
10.190.191.254
198.51.100.213
192.168.190.70

71.

Floor(config)# interface gi0/1Floor(config-if)# Description Connect to recorder LANFloor(config-if)# IP address 192.168.225.223 255.255.255.0Floor(config-if)# no shutdownFloor(config-if ) # Interface gi0/0Floor(config-if)# Description Connect to manager LANFloor(config-if)# IP address 192.168.224.103 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# Interface s0/ 0/ 0Floor(config-if)# description of connection to ISPFloor(config-if)# IP address 10.224.225.254 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# interface s0/0/1Floor( config- if ) # if)# description Connects to the panel WANFloor(config-if)# IP address 203.0.113.246 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# end

See the presentation. A network administrator connects a new host to the registrar's LAN. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

192.168.225.223*
192.168.225.1
10.224.225.254
203.0.113.246
192.168.224.103

72.

Floor(config)# interface gi0/1Floor(config-if)# Description Connects to logger LANFloor(config-if)# IP address 10.118.63.65 255.255.255.0Floor(config-if)# no shutdownFloor(config-if ) # Interface gi0/0Floor(config-if)# Description Connect to LANFloor(config-if) manager# IP address 10.118.62.196 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# Interface s0/ 0/ 0Floor (config-if)# description of connection to ISPFloor(config-if)# IP address 10.62.63.254 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# interface s0/0/1Floor( config- if ) if)# description Connects to the panel WANFloor(config-if)# IP address 209.165.200.87 255.255.255.0Floor(config-if)# no shutdownFloor(config-if)# end

See the presentation. A network administrator connects a new host to the LAN Manager. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

10.118.62.196*
10.118.62.1
10.62.63.254
209.165.200.87
10.118.63.65

73.

HQ(config)# Interface gi0/1HQ(config-if)# Description Connects to LAN branchHQ(config-if)# IP address 172.19.99.99 255.255.255.0HQ(config-if)# without shutdownHQ(config -if) # Interface gi0/0HQ(config-if)# description Connect to storage config-if)# description Connect to IP address ISPHQ(config-if)# 10.98.99.254 255.255.255.0HQ(config-if )# no shutdownHQ(config-if) # Interface s0/0/1HQ (config-if)# Description Connects to control panel WANHQ(config-if)# IP address 209.165.200.120 255.255.255.0HQ(config-if )# no shutdownHQ(config-if) # end

See the presentation. A network administrator connects a new host to the store's LAN. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

172.19.98.230*
172.19.98.1
10.98.99.254
209.165.200.120
172.19.99.99

74.

HQ(config)# Interface gi0/1HQ(config-if)# Description Connect to LAN branchHQ(config-if)# IP address 172.20.133.132 255.255.255.0HQ(config-if)# without shutdownHQ(config -if) # Interface gi0/0HQ(config-if)# description Connect to storage config-if)# description Connect to IP address ISPHQ(config-if)# 10.132.133.254 255.255.255.0HQ(config-if )# no shutdownHQ(config-if) # Interface s0/0/1HQ (config-if)# Description Connects to control panel WANHQ(config-if)# IP address 198.51.100.156 255.255.255.0HQ(config-if )# no shutdownHQ(config-if) # end

See the presentation. A network administrator connects a new host to the store's LAN. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

172.20.132.13*
172.20.132.1
10.132.133.254
198.51.100.156
172.20.133.132

75.

Main(config)# interface gi0/1Main(config-if)# description Connect to LAN serviceMain(config-if)# IP address 192.168.167.166 255.255.255.0Main(config-if)# no shutdownMain(config-if)# interface gi0/0Main(config-if)# description Connects to engineering LANMain(config-if)# IP address 192.168.166.46 255.255.255.0Main(config-if)# no shutdownMain(config-if)# interface s0/0/ 0Main ( config-if)# description Connect to IP address ISPMain(config-if)# 10.166.167.254 255.255.255.0Main(config-if)# no shutdownMain(config-if)# interface s0/0/1Main(config-if) )# Description Establishes a connection to the central WAN

See the presentation. A network administrator connects a new host to the service LAN. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

192.168.167.166*
192.168.167.1
10.166.167.254
198.51.100.189
192.168.166.46

76.

BldgA(config)# Interface gi0/1BldgA(config-if)# Description Connects to LANBldgA(config-if)# IP address 192.168.201.200 255.255.255.0BldgA(config-if)# without shutdownBldgA(config-if)# gi0 interface /0BldgA(config-if)# Description Connect to client LANBldgA(config-if)# IP address 192.168.200.80 255.255.255.0BldgA(config-if)# no shutdownBldgA(config-if)# Interface s0 /0 / 0BldgA ( config -if)# description Connect to ISPBldgA(config-if)# IP address 10.200.201.254 255.255.255.0BldgA(config-if)# no shutdownBldgA(config-if)# interface s0/0/1BldgA (config-if) # description Connect to panel WANBldgA(config-if)# IP address 203.0.113.222 255.255.255.0BldgA(config-if)# no shutdownBldgA(config-if)# end

See the presentation. A network administrator connects a new host to the medical LAN. The host needs to communicate with remote networks. Which IP address would be configured as the default gateway on the new host?

192.168.201.200*
192.168.201.1
10.200.201.254
203.0.113.222
192.168.200.80

77. Open the PT activity. Complete the tasks in the activity guide and answer the question.

Which interfaces on each router are up and operational?

R1: G0/0 e S0/0/1
R2: G0/1 e S0/0/1

R1: G0/1 e S0/0/1
R2: G0/0 e S0/0/1**

R1: G0/0 e S0/0/0
R2: G0/1 e S0/0/0

R1: G0/0 e S0/0/0
R2: G0/0 e S0/0/0

CCNA1 v7 – ITN – Modules 8 – 10: Network Communications Exam Answers (Additionally)

1. What information do routers use to forward a data packet to its destination?

Ursprungs IP-Addresse
Destination IP address*
Source data link address
destination data connection address

2. A computer must send a packet to a destination host on the same LAN. How is the package shipped?

The packet is first sent to the default gateway and, depending on the gateway's response, may be forwarded to the destination host.
The packet is sent directly to the destination host.*
The packet is first sent to the default gateway and then sent from the default gateway directly to the destination host.
The packet is only sent to the default gateway.

3. A router receives a packet on interface Gigabit 0/0 and determines that the packet should be forwarded on interface Gigabit 0/1. What does the router do next?

Route packet out of Gigabit 0/1 interface
Create a new Ethernet Layer 2 frame to send to destination*
Check the ARP cache to find the destination IP address
Check the routing table to see if the destination network is in the routing table

4. What IPv4 address can a host use to ping the loopback interface?

126.0.0.1
127.0.0.0
126.0.0.0
127.0.0.1*

5. When using a connectionless protocol at a lower layer of the OSI model, how is missing data detected and retransmitted if necessary?

Connectionless acknowledgments are used to request retransmission.
Connection-oriented upper layer protocols track received data and can request retransmission from higher layer protocols on the sending host.*
Network layer IP protocols manage communication sessions when connection-oriented transport services are not available.
The best-effort delivery process ensures that all shipped packages arrive.

6. What was the reason for the development and implementation of IPv6?

to make it easier to read a 32-bit address
to reduce the shortage of IPv4 addresses*
to provide more address space in the Internet Name Registry
to enable NAT support for private addressing

7. Which statement exactly describes an IPv4 feature?

All IPv4 addresses can be assigned to hosts.
IPv4 has a 32-bit address space.*
An IPv4 header has fewer fields than an IPv6 header.
IPv4 is natively supported by IPsec

8. Which field in the header of an IPv4 packet generally remains the same during transmission?

Bandera
time to live
package length
Destination address*

9. When a router receives a packet, what information needs to be verified in order for the packet to be forwarded to a remote destination?

destination MAC address
Ursprungs IP-Addresse
Destination IP address*
Quell-MAC-Address

10. What field in an IPv6 packet does the router use to determine if a packet has expired and should be discarded?

TTL
Ignore Limit*
unreachable address
no way to goal

11. What command can be used on a Windows host to view the routing table?

netstat-s
show broken ip
netstat –r*
spore

12. What information is added during encapsulation at OSI layer 3?

source and destination MAC
Source and destination application log
Source and destination port number
Source and destination IP address*

13. How does the network layer use the MTU value?

The network layer relies on higher-level layers to determine the MTU.
The network layer relies on the data link layer to set the MTU and adjust the baud rate accordingly.
The data link layer passes the MTU to the network layer.*
To increase the transmission speed, the network layer ignores the MTU.

14. Which feature describes an improvement of IPv6 over IPv4?

IPv6 addresses are based on simple 128-bit addressing, unlike IPv4 which is based on 32-bit hierarchical addressing.
The IPv6 header is simpler than the IPv4 header, which improves packet handling.*
Both IPv4 and IPv6 support authentication, but only IPv6 supports privacy features.
The IPv6 address space is four times larger than the IPv4 address space.

15. What information does ARP provide when sending an IP packet to a host on a remote network?

the IP address of the destination host
the default gateways IP address
the MAC address of the router interface closest to the sending host*
the MAC address of the switch port that connects to the sending host

16. How does the ARP process use an IP address?

to determine the MAC address of the remote destination host
to discover the MAC address of a device on the same network*
to determine the time it takes a packet to travel from source to destination
to determine the network number based on the number of bits in the IP address

17. What are the two types of addresses that the ARP table maps to a switch?

Layer 3 address to a Layer 2 address*
Layer 3 address to a Layer 4 address
layer 4 address to a layer 2 address
layer 2 address to a layer 4 address

18. What is an ARP protocol feature?

automatically obtain an IPv4 address
Map a domain name to its IP address
Resolution of an IPv4 address to a MAC address*
Maintain a table of domain names with their IP addresses resolved

19. Which router component contains the routing table, ARP cache, and running configuration file?

HIT*
the blink
NVRAM
ROM

20. What information does an ARP table contain?

Change mapped ports to destination MAC addresses
Domain name to IP address mappings
Routes to reach target networks
IP address to MAC address mappings*

21. A PC is configured to automatically obtain an IP address from the 192.168.1.0/24 network. The network administrator issues the arp -a command and notices an entry of 192.168.1.255 ff-ff-ff-ff-ff-ff. What statement does this entry describe?

This is a static map entry.*
This is a dynamic map entry.
This entry refers to the PC itself.
This entry is associated with the default gateway.

22. A cybersecurity analyst believes that an attacker is spoofing the default gateway MAC address to perform a man-in-the-middle attack. Which command should the analyst use to show the MAC address a host is using to reach the default gateway?

ipconfig / alle
stretch pressure
netstat-r
arp –a*

23. What is an ARP function?

Resolve MAC addresses to IPv4 addresses
Resolution of port addresses to MAC addresses
Resolve MAC addresses to port addresses
Resolution of IPv4 addresses to MAC addresses*

24. What is the purpose of ARP in an IPv4 network?

to route data based on destination IP address
to get a specific MAC address if an IP address is known*
Forward data based on destination MAC address.
to build the MAC address table on a switch from the collected information

25. What action does a Layer 2 switch take when it receives a Layer 2 broadcast frame?

The frame falls.
Forwards the frame to all ports except the port where it received the frame.*
It forwards the frame to all ports registered to forward transmissions.
Send the frame to all ports.

26. Which destination address is used in an ARP request frame?

0.0.0.0
255.255.255.255
FFFF.FFFF.FFFF*
127.0.0.1
01-00-5E-00-AA-23

27. What addresses are mapped by ARP?

Destination MAC address to a destination IPv4 address*
Destination IPv4 address to source MAC address
Destination IPv4 address for destination hostname
Destination MAC address to source IPv4 address

28. What does a Layer 2 switch do if the destination MAC address of an incoming frame is not in the MAC table?

Initiates an ARP request.
It broadcasts the frame from all ports on the switch.
Notifies the sending host that the frame cannot be delivered.
Forwards the frame on all ports except the port on which the frame was received.*

29. What are the two ICMPv6 messages used during the Ethernet MAC address resolution process? (Choose two.)

router request
router advertisement
Neighbor Request*
neighbor's display*
echo request

30. A router boots up and enters configuration mode. What is the reason for this?

The IOS image is corrupted.
Cisco IOS is missing flash memory.
Missing NVRAM configuration file.*
The POST process has detected a hardware error.

31. Which command is used to encrypt all passwords in a router configuration file?

Router_A(config) # enable secret
Router_A(config) # Password Encryption Service*
Enable Router_A(config)# password
Router_A(config)# Encrypt password

32. Company policy requires the use of the most secure method to protect run-mode privileged access and configuration on routers. The privileged executive password is trustknow1. Which of the following router commands achieves the goal of providing the highest level of security?

contrasena secreta trustknow1
Enable password trustknow1
password encryption service
habilitar segredo trustknow1*

33. What will be the response of the router after entering the command "router (config) # hostname portsmouth"?

Portsmouth #
portsmouth(config)#*
Invalid input detected
router (configuration host)#
Nome do host = Portmouth
Portsmouth #
🇧🇷 unknown command
Router (configuration)#

34. An administrator configures a new router to allow out-of-band management access. What set of commands enables the required login with a Cisco password?

Router(config)# line vty 0 4
Router (configuration line) # Password management
Router (configuration line) # output
router(config) # Enable password cisco

Router(config)# line vty 0 4
Router (configuration line) # Cisco Password
Router (configuration line) # login

router(config)# console line 0
Router (configuration line) # Cisco Password
Router (configuration line) # login ***

router(config)# console line 0
Router (configuration line) # Cisco Password
Router (configuration line) # output
router(config)# Password encryption service

35. On a Cisco router, which command can be used to show all interfaces, assigned IPv4 address, and current status?

Show IP interface summary*
cano
show broken ip
Show interface fa0/1

36. Which CLI mode allows users to access all device commands, e.g. B. for configuration, management, and troubleshooting?

User EXEC mode
privileged EXEC mode*
global configuration mode
interface configuration mode

37. What is the purpose of the startup configuration file on a Cisco router?

to facilitate basic operation of a device's hardware components
to contain the commands used to initially configure a router on startup*
to contain the configuration commands that the router IOS is currently using
to provide a limited backup version of the IOS in case the router is unable to load the fully functional IOS

38. Which property describes the default gateway of a host computer?

the logical address of the router interface on the same network as the host computer*
the physical address of the switch interface connected to the host computer
the physical address of the router interface on the same network as the host computer
the logical address assigned to the switch interface connected to the router

39. What is the purpose of the banner motd command?

Specifies a message identifying printed documents for LAN users.
This is how routers communicate the status of their connections to each other.
It provides an easy way to communicate with any user connected to a router's LANs.
Provides a way to advertise to people who log into a router.*

40. A technician configures a router to allow all forms of management access. As part of each different type of access, the technician attempts to enter the login command. Which configuration mode must be entered to perform this task?

Executive User Mode
global configuration mode
any line configuration mode*
privileged EXEC mode

41. What is stored in the NVRAM of a Cisco router?

Cisco-IOS
the running configuration
startup instructions
Startup Settings*

42. Which statement about the service password encryption command is correct?

It is configured in privileged EXEC mode.
Encrypt only line mode passwords.
Once the service password encryption command is entered, all currently configured passwords that were previously displayed in plain text will be encrypted.*
To view passwords encrypted in clear text using the service password-encryption command, enter the no service password-encryption command.