Computer Networking
You type the following command into the router and receive the following output:Router#show serial 0/0 ^% Invalid input detected at '^' marker.Why was this error message displayed?

The router does not have a serial0/0 interface.
You need to be in privileged mode.
Part of the command is missing.
You cannot have a space between serial and 0/0.

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Computer Networking
The main difference between TCP and UDP is

UDP is a datagram where as TCP is a connection oriented service
UDP is connection oriented where as TCP is datagram service
None of these
All of these
TCP is an Internet protocol where as UDP is an ATM protocol

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Computer Networking
RS-449/442-A/423-A is

a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression the resulting expression will not conform to the rules of construction and
a check bit appended to an array of binary digits to make the sum of the all the binary digits
the ratio of the number of data units in error to the total number of data units
a set of physical layer standards developed by EIA and intended to replace RS-232-
None of these

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