Modules 16-17

Which three services are provided by the AAA framework?

1.Authentication 2. Authorization 3. Accounting

A small company has only one router as the exit point to its ISP. Which solution could be adopted to maintain connectivity if the router itself, or its connection to the ISP, fails?

Have a second router that is connected to another ISP.

Which command can an administrator issue on a Cisco router to send debug messages to the vty lines?

Terminal command

What information about a Cisco router can be verified using the show version command?

The value of the configuration register. The value of the configuration register can be verified with the show version command.

Which backup policy consideration is concerned with using strong passwords to protect the backups and for restoring data?

Validation. Backup validation is concerned with using strong passwords to protect backups and for restoring data.

A network technician suspects that a particular network connection between two Cisco switches is having a duplex mismatch. Which command would the technician use to see the Layer 1 and Layer 2 details of a switch port?

show interfaces The show interfaces command can be used on both routers and switches to see speed, duplex, media type, MAC address, port type, and other Layer 1/Layer 2-related information.

Host H3 is having trouble communicating with host H1. The network administrator suspects a problem exists with the H3 workstation and wants to prove that there is no problem with the R2 configuration. What tool could the network administrator use on router R2 to prove that communication exists to host H1 from the interface on R2, which is the interface that H3 uses when communicating with remote networks?

An extended ping. An extended ping allows an administrator to select specific ping features. For example in this situation, the network administrator could do an extended ping and specify a source address of the gigabit Ethernet port on the router. The destination address would be the IP address of host H1. If the ping succeeds connectivity exists from the Ethernet router interface on R2 to device H1.

Which statement is true about CDP on a Cisco device?​

CDP can be disabled globally or on a specific interface. CDP is a Cisco-proprietary protocol that can be disabled globally by using the no cdp run global configuration command, or disabled on a specific interface, by using the no cdp enable interface configuration command. Because CDP operates at the data link layer, two or more Cisco network devices, such as routers can learn about each other even if Layer 3 connectivity does not exist. The show cdp neighbors detail command reveals the IP address of a neighboring device regardless of whether you can ping the neighbor.

By following a structured troubleshooting approach, a network administrator identified a network issue after a conversation with the user. What is the next step that the administrator should take?

Establish a theory of probable causes. A structured network troubleshooting approach should include these steps in sequence: 1 .Identify the problem. 2. Establish a theory of probable causes. 3. Test the theory to determine cause. 4. Establish a plan of action to resolve the issue. 5. Verify full system functionality and implement 6. preventive measures. 7. Document findings, actions, and outcomes.

A network technician issues the C:\> tracert -6 www.cisco.com command on a Windows PC. What is the purpose of the -6 command option?

It forces the trace to use IPv6. It forces the trace to use IPv6.