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

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

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Computer Networking
X.21 is

network access standard for connecting stations to a circuit-switched network
a very common bit-oriented data link protocol issued by ISO
a method access control technique for multiple-access transmission media
a method of determining which device has access to the transmission medium at any time
None of these

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