Computer Networking
RS-232-G

is an interface between two data circuit terminating equipment as examplified by a local and remote modem
requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
None of these
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

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Computer Networking
If routers in a single area are configured with the same priority value, what value does a router use for the OSPF Router ID in the absence of a loopback interface?

The highest IP address of any logical interface
The lowest IP address of any physical interface
The lowest IP address of any logical interface
The highest IP address of any physical interface

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Computer Networking
Which of the following refers to the terms "residual error rate"?

signal to noise ratio divided by the ratio of energy per bit to noise per hertz
the probability that one or more errors will be detected when an error detection mechanism is used
The probability that one or more errors will be undetected when an error detection scheme is used
the number of bit errors per twenty four hours of continuous operation on an asynchronous line
None of these

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