Computer Networking
Parity bit is

a check bit appended to an array of binary digits to make the sum of all the binary digits.
the ratio of the number of data units in error to the total number of data units
None of these
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

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Computer Networking
You telnet into a remote device and type debug ip rip, but no output from the debug command is seen. What could the problem be?

You must type the show ip rip command first.
IP addressing on the network is incorrect.
You must use the terminal monitor command.
Debug output is sent only to the console.

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Computer Networking
RS-232-G

requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment
specifies only the mechanical characteristics of an interface by providing a 25-pin connector
None of these
is an interface between two data circuit terminating equipment as examplified by a local and remote modem

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