Which of the following is a standards-based protocol that works much like CDP?
A. DHCP
B. LLDP
C. DDNS
D. SSTP
B. The IEEE created a new standardized discovery protocol called 802.1AB for Station and Media Access Control Connectivity Discovery. Well just call it Link Layer Discovery Protocol (LLDP).
Which command can be used to determine a routers capacity to generate debug output?
A. show version
B. show controllers
C. show processes cpu
D. show memory
C. The show processes (or show processes cpu) is a good tool for determining a given routers CPU utilization. When it is high, it is not a good time to execute a debug command.
You are troubleshooting a connectivity problem in your corporate network and want to isolate the problem. You suspect that a router on the route to an unreachable network is at fault. What IOS user exec command should you issue?
A. Router>ping
B. Router>t
B. The command traceroute (trace for short), which can be issued from user mode or privileged mode, is used to find the path a packet takes through an internetwork and will also show you where the packet stops because of an error on a router.
You copy a configuration from a network host to a routers RAM. The configuration looks correct, yet it is not working at all. What could the problem be?
A. You copied the wrong configuration into RAM.
B. You copied the configuration into flash memory inst
C. Since the configuration looks correct, you probably didn’t screw up the copy job. However, when you perform a copy from a network host to a router, the interfaces are automatically shut down and need to be manually enabled with the no shutdown comman
In the following command, what does the IP address 10.10.10.254 refer to?
Router#config t
Router(config)#interface fa0/0
Router(config-if)#ip helper-address 10.10.10.254
A. IP address of the ingress interface on the router
B. IP address of the egress inte
D. Specifying the address of the DHCP server allows the router to relay broadcast traffic destined for a DHCP server to that server.
The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?
A. RAM should be erased an
C. Before you start to configure the router, you should erase the NVRAM with the erase startup-config command and then reload the router using the reload command.
What command can you use to determine the IP address of a directly connected neighbor?
A. show cdp
B. show cdp neighbors
C. show cdp neighbors detail
D. show neighbor detail
C. This command can be run on both routers and switches and it displays detailed information about each device connected to the device youre running the command on, including the IP address.
According to the output, what interface does SW-2 use to connect to SW-3?
SW-3#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route BridgeS - Switch, H - Host, I - IGMP, r - Repeater, P - Phone, D - Remote, C - CVTA, M - Two-p
C. The Port ID column describes the interfaces on the remote device end of the connection.
What command can you use to determine the IP address of a directly connected neighbor?
A. show cdp
B. show cdp neighbors
C. show cdp neighbors detail
D. show neighbor detail
C. This command can be run on both routers and switches, and it displays detailed information about each device connected to the device youre running the command on, including the IP address.
You save the configuration on a router with the copy running-config startup-config command and reboot the router. The router, however, comes up with a blank configuration. What can the problem be?
A. You didnt boot the router with the correct command.
B.
C. If you save a configuration and reload the router and it comes up either in setup mode or as a blank configuration, chances are you have the configuration register setting incorrect.
If you want to have more than one Telnet session open at the same time, what keystroke combination would you use?
A. Tab+spacebar
B. Ctrl+X, then 6
C. Ctrl+Shift+X, then 6
D. Ctrl+Shift+6, then X
D. To keep open one or more Telnet sessions, use the Ctrl+Shift+6 and then X keystroke combination.
You are unsuccessful in telnetting into a remote device from your switch, but you could telnet to the router earlier. However, you can still ping the remote device. What could the problem be? (Choose two.)
A. IP addresses are incorrect.
B. Access control
B, D. The best answers, the ones you need to remember, are that either an access control list is filtering the Telnet session or the VTY password is not set on the remote device.
What information is displayed by the show hosts command? (Choose two.)
A. Temporary DNS entries
B. The names of the routers created using the hostname command
C. The IP addresses of workstations allowed to access the router
D. Permanent name-to-address ma
A, D. The show hosts command provides information on temporary DNS entries and permanent name-to-address mappings created using the ip host command.
Which three commands can be used to check LAN connectivity problems on a switch? (Choose three.)
A. show interfaces
B. show ip route
C. tracert
D. ping
E. dns lookups
A, B, D. The tracert command is a Windows command and will not work on a router or switch! IOS uses the traceroute command.
You telnet to a router and make your necessary changes; now you want to end the Telnet session. What command do you type in?
A. close
B. disable
C. disconnect
D. exit
D. Since the question never mentioned anything about a suspended session, you can assume that the Telnet session is still open, and you would just type exit to close the session.
You telnet into a remote device and type debug ip icmp, but no output from the debug command is seen. What could the problem be?
A. You must type the show ip icmp command first.
B. IP addressing on the network is incorrect.
C. You must use the terminal mo
C. To see console messages through your Telnet session, you must enter the terminal monitor command.
You need to view console messages on a device to which you have connected through telnet. The command you need to execute to see these is ___________.
terminal monitor When you telnet into a remote device, you will not see console messages by default. For example, you will not see debugging output. To allow console messages to be sent to your Telnet session, use the terminal monitor command.
You need to gather the IP address of a remote switch that is located in Hawaii. What can you do to find the address?
A. Fly to Hawaii, console into the switch, then relax and have a drink with an umbrella in it.
B. Issue the show ip route command on the r
E. Although option A is certainly the best answer, unfortunately option E will work just fine and your boss would probably prefer you to use the show cdp neighbors detail command.
You need to configure all your routers and switches so they synchronize their clocks from one time source. What command will you type for each device?
A. clock synchronizationip_address
B. ntp master ip_address
C. sync ntp ip_address
D. ntp server ip_addr
D. To enable a device to be an NTP client, use the ntp serverIP_addressversion version command at global configuration mode. That’s all there is to it! Assuming your NTP server is working of course.
What two commands can you use to verify your NTP client?
A. show ntp server
B. show ntp status
C. show vtp status
D. show ntp associations
E. show clock source
B, D. You can verify your NTP client with the show ntp status and show ntp associations commands.