Computer Networking
Which of the following allows devices on one network to communicate with devices on another network?

t-switch
None of these
gateway
multiplexer
modern

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Computer Networking
Demodulation is the process of

converting analog signals to digital signals
None of these
dividing the high-speed signals into frequency bands
converting digital signals to analog signals
combining many low speed channels into one high speed channel

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Computer Networking
ICMP (Internet Control Message Protocol) is

a protocol that handles error and control messages
None of these
a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
a TCP/IP high level protocol for transferring files from one machine to another
a protocol used to monitor computers

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Computer Networking
Parity bit is

the ratio of the number of data units in error to the total number of data units
an error-detecting code based on a summation operation performed on the bits to be checked.
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 all the binary digits.
None of these

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