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Computer Networking

Computer Networking
A modem is connected in between a telephone line and a

network
serial port
None of these
communication adapter
computer

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Computer Networking
A group of 2m - 1 routers are interconnected in a centralized binary tree, with router at each tree node. Router I communicate with router J by sending a message to the root of the tree. The root then sends the message back down to J. Then find the mean router-router path length.

2 (m - 2)
2 (2m - 1)
(2m - l)/mJ
m - 1

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Computer Networking
Which of the following TCP/IP protocol allows an application program on one machine to send a datagram to an application program on another machine?

X.25
SMTP
None of these
VMTP
UDP

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

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

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Computer Networking
Which command will display the CHAP authentication process as it occurs between two routers in the network?

show chap authentication
debug ppp authentication
show interface serial 0
debug chap authentication

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Computer Networking
In OSI model, which of the following layer transforms information from machine format into that understandable by user

application
physical
presentation
session
None of these

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