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Computer Networking

Computer Networking
The birthplace of the World Wide Web is considered to be

Netscape
the Department of Defense
CERN
ARPA
None of these

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Computer Networking
Which of the following device is used to connect two systems, especially if the systems use different protocols?

None of these
gateway
repeater
bridge
hub

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Computer Networking
Suppose that you have a customer who has a central HQ and six branch offices. They anticipate adding six more branches in the near future. They wish to implement a WAN technology that will allow the branches to economically connect to HQ and you have no free ports on the HQ router. Which of the following would you recommend?

PPP
HDLC
ISDN
Frame Relay

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Computer Networking
A 4 KHz noiseless channel with one sample every 125 per sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.048 Mbps encoding is used.

None of these
8 Kbps
64 Kbps
500 Kbps
32 Kbps

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Computer Networking
Which command displays RIP routing updates?

debug ip rip
show protocols
show ip route
debug ip route

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Computer Networking
Error control is needed at the transport layer because of potential errors occurring _____.

from transmission line noise
from packet losses.
from out-of-sequence delivery
in routers

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