Free Cisco 640-821 Exam Dumps Questions & Answers

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

• A.Frame Relay
• B.ISDN
• C.T1
• D.PPP
• E.DSL

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

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

Which types of cables are required to interconnect the devices shown in the graphic?
(Choose three.)

• A.rollover cable
• B.straight-through cable
• C.crossover cable
• D.RJ-11 cable
• E.V.35 cable
• F.USB cable

Which IP address is a private address?

• A.192.169.42.34
• B.168.172.19.39
• C.172.20.14.36
• D.172.33.194.30
• E.12.0.0.1

Which statements accurately describe CDP? (Choose three.)

• A.CDP can discover Cisco devices that are not directly connected.
• B.CDP is an IEEE standard protocol.
• C.CDP can discover directly connected neighboring Cisco devices.
• D.CDP is a datalink layer protocol.
• E.CDP is a network layer protocol.
• F.CDP is a Cisco proprietary protocol.