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
login
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?
Time-to-Live
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?
Network destination: 127.0.0.1
Netmask: 255.255.255.255
Gateway: On-link
Interface: 127.0.0.1
Metric: 306
Network destination: 0.0.0.0
Netmask: 0.0.0.0
Gateway: 192.168.10.1
Interface: 192.168.10.10
Metric: 25
Network destination: 192.168.10.10
Netmask: 255.255.255.255
Gateway: On-link
Interface: 192.168.10.10
Metric: 281
Network destination: 192.168.10.0
Netmask: 255.255.255.0
Gateway: On-link
Interface: 192.168.10.10
Metric: 281
9. Match the command with the device mode at which the command is entered. (Not all options are used.)
R1(config)# -> service password-encrytion
R1> -> enable
R1# -> copy running-config startup-config
R1(config-line)# -> login
R1(config-if)# -> ip address 192.168.4.4 255.255.255.0
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
Version
Protocol
Identification
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 192.168.2.10. Out which interface will R1 forward the packet?
FastEthernet0/1
FastEthernet0/0
Serial0/0/0
Serial0/0/1
17. What are two types of router interfaces? (Choose two.)
DHCP
Telnet
SVI
LAN
WAN
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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