Online Access Free 640-821 Exam Questions

Which command can be used to determine the type of cable attached to the Serial 0/0 interface on a router?

• A.show line serial 0/0
• B.show controllers serial 0/0
• C.show version
• D.show ip interface
• E.show interfaces serial 0/0
• F.show running-config

What determines the IOS that the router will load?

• A.the configuration register and boot system commands
• B.the configuration register and the setup command
• C.the start up register and startup system command
• D.the load register and the startup system command
• E.the boot register and the startup system command

Refer to the graphic. What is the purpose of the two numbers shown following the exec- timeout command?

• A.If no commands have been typed in 55 seconds, the console connection will be closed.
• B.If connected to the router by Telnet, input must be detected within one hour and 55 seconds or the connection will be closed.
• C.If no commands have been typed in one minute and 55 seconds, the console connection will be closed.
• D.If connected to the router by Telnet, input must be detected within one minute and 55 seconds or the connection will be closed.
• E.If no router activity has been detected in one hour and 55 minutes, the console will be locked out.

An elementary school has a computer in every classroom. One entire wing of the school connects to a centrally located hub. The teachers have reported a slowdown in the past few weeks to the network administrator. The network administrator has analyzed the network and documented a steep increase in utilization as the teachers use a new network- based classroom management application. Which solution will improve the performance the most?

• A.Ensure all devices in the affected wing have a default gateway.
• B.Reboot the router that connects to the hub.
• C.Replace the hub with a switch.
• D.Install a repeater in the affected wing.
• E.Install a router and install another hub in the affected wing.

If a host on a network has the address 172.16.45.14/30, what is the address of the subnetwork to which this host belongs?

• A.172.16.45.4
• B.172.16.45.16
• C.172.16.45.8
• D.172.16.45.0
• E.172.16.45.12