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IP Routing Technologies - 1

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drepitts8's version from 2016-02-06 19:22

Section 1

Question Answer
Why is flash memory erased prior to upgrading the IOS image from the TFTP server?Erasing current flash content is requested during the copy dialog.
Which two commands will display the current IP address and basic Layer 1 and 2 status of an interface? router#show ip interface router#show protocols
show protocols command shows the global and interface-specific status of any configured Level 3 protocol. It also gives layer 1 and layer 2 status of all interfaces.
show ip interface command lists interfaces, configured IPv4 addresses and layer 1 and layer 2 states.
show controllers command displays information about the physical interface itself. It will also give you the type of cable plugged into a port but does not provide IP address information.
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Section 2

Question Answer
Which IOS command is used to initiate a login into a VTY port on a remote router?router# telnet
A Cisco router is booting and has just completed the POST process. It is now ready to find and load an IOS image. What function does the router perform next?It checks the configuration register.
Which command shows your active Telnet connections?show session
Serial0/1 is up, line protocol is up Port operational.
Serial0/1 is up, line protocol is downLayer 2 problem
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Section 3

Question Answer
Serial0/1 is down, line protocol is downLayer 1 problem.
Serial0/1 is administratively down, line protocol is down Port disabled
Which two of these functions do routers perform on packets? Update the Layer 2 headers of outbound packets with the MAC addresses of the next hops. Examine the Layer 3 headers of inbound packets and use that information to determine the next hops for the packets.
Which command reveals the last method used to powercycle a router? show version
Which command displays CPU utilization?show process
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Section 4

Question Answer
An administrator is in the process of changing the configuration of a router. What command will allow the administrator to check the changes that have been made prior to saving the new configuration?Router# show running-config
What two things does a router do when it forwards a packet?switches the packet to the appropriate outgoing interfaces. determines the next hop on the path.
Which command would you use on a Cisco router to verify the Layer 3 path to a host? traceroute address
traceroute command will list IP addresses of the routers along the way to the destination, including the final destination, displaying the path a packet takes to reach the destination.
Which two of these functions do routers perform on packets? update the Layer 2 headers of outbound packets with the MAC addresses of the next hops. examine the Layer 3 headers of inbound packets and use that information to determine the next hops for the packets.
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Section 5

Question Answer
Before installing a new, upgraded version of the IOS, what should be checked on the router, and which command should be used to gather this information?The amount of available flash and RAM memory show version
If IP routing is enabled, which two commands set the gateway of last resort to the default gateway?ip default-network 0.0.0.0 ip route 0.0.0.0 0.0.0.0 172.16.2.1
Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices?cdp run
Which two locations can be configured as a source for the IOS image in the boot system command? flash memory TFTP server
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