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Cisco 640-821 Exam Syllabus Topics:

Cisco Introduction to Cisco Networking Technologies Sample Questions:

1. An administrator issues the show ip interface s0/0 command and the output displays the line Serial0/0 is up, line protocol is upWhat does "line protocol is up" specifically indicate about the interface?

A) CDP has discovered the connected device.
B) IP is correctly configured on the interface.
C) Keepalives are being received on the interface.
D) A carrier detect signal has been received from the connected device.
E) The cable is attached properly.

2. A network administrator cannot get a router serial interface to become active. The administrator suspects that the problem may be the cable attached to the interface. The administrator is not at the same physical location as the router. Which Cisco IOS command allows the administrator to check the serial 0/0 cabling type?

A) show startup-config
B) show version
C) show running-config
D) show controllers serial 0/0
E) show interfaces serial 0/0

3. WAN data link encapsulation types include which of the following? (Choose two.)

A) T1
B) Frame Relay
C) PPP
D) ISDN
E) DSL

4. DRAG DROP
drag drop

5. A router is not operating as expected and the network administrator wants to verify that the router booted using the correct IOS image. Which command should be used to determine which IOS is running on the router?

A) show config-register
B) show flash
C) show startup-config
D) show version
E) show memory

Solutions: