CCNA 1 Chapter 6 V5.0 Answers

1. Which two commands can be used on a Windows host to display the routing table? (Choose two.)

netstat -s

route print

show ip route

netstat -r

tracert

 

2. Which statement about router interfaces is true?

Router LAN interfaces are not activated by default, but router WAN interfaces are.

Once the no shutdown command is given, a router interface is active and operational.

Commands that apply an IP address and subnet mask to an interface are entered in global configuration mode.

A configured and activated router interface must be connected to another device in order to operate.

 

3. 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?

discard the traffic after consulting the route table

look up the next-hop address for the packet

switch the packet to the directly connected interface

analyze the destination IP address

 

4. Why is NAT not needed in IPv6?​

Because IPv6 has integrated security, there is no need to hide the IPv6 addresses of internal networks.​

Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.​

The problems that are induced by NAT applications are solved because the IPv6 header improves packet handling by intermediate routers.​

The end-to-end connectivity problems that are caused by NAT are solved because the number of routes increases with the number of nodes that are connected to the Internet.

 

5. After troubleshooting a router, the network administrator wants to save the router configuration so that it will be used automatically the next time that the router reboots. What command should be issued?

copy running-config flash

copy startup-config flash

copy running-config startup-config

reload

copy startup-config running-config

 

6. A computer has to send a packet to a destination host in the same LAN. How will the packet be sent?

The packet will be sent to the default gateway first, and then, depending on the response from the gateway, it may be sent to the destination host.

The packet will be sent directly to the destination host.

The packet will first be sent to the default gateway, and then from the default gateway it will be sent directly to the destination host.

The packet will be sent only to the default gateway.

 

7. A technician is manually configuring a computer with the necessary IP parameters to communicate over the corporate network. The computer already has an IP address, a subnet mask, and a DNS server. What else has to be configured for Internet access?

the WINS server address

the default gateway address

the MAC address

the domain name of the organization

 

8.

The enable command is entered at the R1> prompt. The login command is entered at the R1(config-line)# prompt. 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.

 

9. Which two interfaces will allow access via the VTY lines to configure the router? (Choose two.)

aux interfaces

LAN interfaces

WAN interfaces

console interfaces

USB interfaces

 

10.

IPv6 has more QoS and control features than IPv4 has. Fields like Flow Label and Traffic Class in the IPv6 header support those features. Length/Type is not found in Layer 3 headers. It is a Layer 2 field.

 

11. Which three commands are used to set up a password for a person who attaches a cable to a new router so that an initial configuration can be performed? (Choose three.)

interface fastethernet 0/0

line vty 0 4

line console 0

enable secret cisco

login

password cisco

 

12.

Refer to the exhibit. Fill in the blank.

A packet leaving PC-1 has to traverse ..3.. hops to reach PC-4.​

 

13. A technician is configuring a router that is actively running on the network. Suddenly, power to the router is lost. If the technician has not saved the configuration, which two types of information will be lost? (Choose two.)

Cisco IOS image file

routing table

bootstrap file

ARP cache

startup configuration

 

14. Which command displays a summary chart of all router interfaces, their IP addresses, and their current operational status?

show ip route

show version

show interfaces

show ip interface brief

 

15. What is a service provided by the Flow Label field of the IPv6 header?

It limits the lifetime of a packet.

It identifies the total length of the IPv6 packet.

It classifies packets for traffic congestion control.

It informs network devices to maintain the same path for real-time application packets.

 

16. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question or complete the task.

Does the router have enough RAM and flash memory to support the new IOS?

The router has enough RAM and flash memory for the IOS upgrade.

The router has enough RAM, but needs more flash memory for the IOS upgrade.

The router has enough flash memory, but needs more RAM for the IOS upgrade.

The router needs more RAM and more flash memory for the IOS upgrade.

 

17. Fill in the blank.

In a router...ROM... is the nonvolatile memory where the diagnostic software, the bootup instructions, and a limited IOS are stored.

 

18.

Packets with a destination of 172.17.6.15 are forwarded through Fa0/0. Packets with a destination of 172.17.10.5 are forwarded through Fa1/1. Packets with a destination of 172.17.12.10 are forwarded through Fa1/0. Packets with a destination of 172.17.14.8 are forwarded through Fa0/1. Because network 172.17.8.0 has no entry in the routing table, it will take the gateway of last resort, which means that packets with a destination of 172.17.8.20 are forwarded through Serial0/0/0. Because a gateway of last resort exists, no packets will be dropped.

 

19. Which IPv4 header field is responsible for defining the priority of the packet?​

flow label

flags

differentiated services

traffic class

 

20. When would the Cisco IOS image held in ROM be used to boot the router?

during a file transfer operation

during a normal boot process

when the full IOS cannot be found

when the running configuration directs the router to do this

 

21. Which two files, if found, are copied into RAM as a router with the default configuration register setting boots up? (Choose two.)

running configuration

IOS image file

startup configuration

POST diagnostics

 

22. When connectionless protocols are implemented at the lower layers of the OSI model, what are usually used to acknowledge the data receipt and request the retransmission of missing data?

connectionless acknowledgements

upper-layer connection-oriented protocols

Network layer IP protocols

Transport layer UDP protocols

 

23. How do hosts ensure that their packets are directed to the correct network destination?

They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.​

They always direct their packets to the default gateway, which will be responsible for the packet delivery.

They search in their own local routing table for a route to the network destination address and pass this information to the default gateway.

They send a query packet to the default gateway asking for the best route.