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Computer Networking

Computer Networking
What protocol does PPP use to identify the Network layer protocol?

LCP
NCP
HDLC
ISDN

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Computer Networking
Which of the following summation operation is performed on the bits to check an error-detecting code?

Checksum
Codec
None of these
Attenuation
Coder-decoder

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Computer Networking
Which of the following best illustrates the default subnet mask for a class A,B, and C Network?

255.255.255.0, 255.255.0.0, 255.0.0.0
0.0.0.0, 0.0.0.1, 0.0.1.1
255.0.0.0, 255.255.0.0, 255.255.255.0
255.255.0.0, 255.255.255.0, 255.255.255.255
None of these

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Computer Networking
The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

802.1
PAP
Frame Relay
HDLC
PPP

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Computer Networking
What does the command routerA (config) #line cons 0 allow you to perform next?

Disable console connections.
Shut down the router.
Set the Telnet password.
Set your console password.

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Computer Networking
What is the frequency range of the IEEE 802.11b standard?

5GHz
2.4Gbps
2.4GHz
5Gbps

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