Computer Networking
When setting up Frame Relay for point-to-point subinterfaces, which of the following must not be configured?

An IP address on the physical interface
The local DLCI on each subinterface
The Frame Relay encapsulation on the physical interface
The subinterface type as point-to-point
PAP

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Computer Networking
Contention is

the condition when two or more stations attempt to use the same channel at the same time
One or more conductors that serve as a common connection for a related group of devices
None of these
a collection of interconnected functional units that provides a data communications service among stations attached to the network
a continuous frequency capable of being modulated or impressed with a second signal

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

a set of physical layer standards developed by EIA and intended to replace RS-232-
None of these
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 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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