CCNA 1 Chapter 6 V6.0 Answers

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

To provide a limited backup version of the IOS, in case the router cannot load the full featured IOS

to facilitate the basic operation of the hardware components of a device

to contain the configuration commands that the router IOS is currently using

to contain the commands that are used to initially configure a router on startup


2. Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.)

password cisco

line vty 0 4


line console 0

interface fastethernet 0/0

enable secret cisco


3. What routing table entry has a next hop address associated with a destination network?

directly-connected routes

C and L source routes

remote routes

local routes


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


Differentiated Services

Acknowledgment Number

Sequence Number


5. What type of route is indicated by the code C in an IPv4 routing table on a Cisco router?

default route

directly connected route

dynamic route that is learned through EIGRP

static route


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

Upper-layer connection-oriented protocols keep track of the data received and can request retransmission from the upper-level protocols on the sending host.

The best-effort delivery process guarantees that all packets that are sent are received.

Network layer IP protocols manage the communication sessions if connection-oriented transport services are not available.

Connectionless acknowledgements are used to request retransmission.


7. Open the PT Activity. The enable password on all devices is cisco.

Perform the tasks in the activity instructions and then answer the question.

For what reason is the failure occurring?

SW1 does not have a default gateway configured.

The IP address of SW1 is configured in a wrong subnet.

PC1 has an incorrect default gateway configured.

PC2 has an incorrect default gateway configured.


8. Refer to the exhibit. Which route from the PC1 routing table will be used to reach PC2?

Which route from the PC1 routing table will be used to reach PC2?

Network destination:


Gateway: On-link


Metric: 306


Network destination:




Metric: 25


Network destination:


Gateway: On-link


Metric: 281


Network destination:


Gateway: On-link


Metric: 281


9. Match the command with the device mode at which the command is entered. (Not all options are used.)

Match the command with the device mode at which the command is entered

R1(config)# -> service password-encrytion

R1> -> enable

R1# -> copy running-config startup-config

R1(config-line)# -> login

R1(config-if)# -> ip address


10. Which two pieces of information are in the RAM of a Cisco router during normal operation? (Choose two.)

basic diagnostic software

startup configuration file

Cisco IOS

backup IOS file

IP routing table


11. What IPv4 header field identifies the upper layer protocol carried in the packet?

Differentiated Services





12. Following default settings, what is the next step in the router boot sequence after the IOS loads from flash?

Load the bootstrap program from ROM.

Perform the POST routine.

Load the running-config file from RAM.

Locate and load the startup-config file from NVRAM.


13. A router boots and enters setup mode. What is the reason for this?

The configuration file is missing from NVRAM.

Cisco IOS is missing from flash memory.

The POST process has detected hardware failure.

The IOS image is corrupt.


14. Which characteristic describes an IPv6 enhancement over IPv4?

The IPv6 header is simpler than the IPv4 header is, which improves packet handling.

IPv6 addresses are based on 128-bit flat addressing as opposed to IPv4 which is based on 32-bit hierarchical addressing.

The IPv6 address space is four times bigger than the IPv4 address space.

Both IPv4 and IPv6 support authentication, but only IPv6 supports privacy capabilities.


15. What are two characteristics of IP? (Choose two.)

guarantees delivery of packets

retransmits packets if errors occur

does not require a dedicated end-to-end connection

re-assembles out of order packets into the correct order at the receiver end

operates independently of the network media


16. Refer to the exhibit. R1 receives a packet destined for the IP address Out which interface will R1 forward the packet?

Out which interface will R1 forward the packet?






17. What are two types of router interfaces? (Choose two.)







18. What is one advantage that the IPv6 simplified header offers over IPv4?

smaller-sized source and destination IP addresses

efficient packet handling

little requirement for processing checksums

smaller-sized header


19. Which characteristic of the network layer in the OSI model allows carrying packets for multiple types of communications among many hosts?

the ability to manage the data transport between processes running on hosts

the selection of paths for and direct packets toward the destination

the ability to operate without regard to the data that is carried in each packet

the de-encapsulation of headers from lower layers


20. Which statement describes a hardware feature of a Cisco 1941 router that has the default hardware configuration?

It does not require a CPU because it relies on Compact Flash to run the IOS.

It does not have an AUX port.

It has two types of ports that can be used to access the console.

It has three FastEthernet interfaces for LAN access.

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