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Q.

In ________ APS, there are normally two lines: one working line and one protection line. Both lines are active all the time

A

one-plus-one

B

one-to-one

C

one-to-many

D

none of the above

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A bridge can use the _________ algorithm to create a loopless topology.

A

binary tree

B

spanning tree

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multiway tree

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The ATM standard defines ______ layers

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two

B

three

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______ eliminates the varying delay times associated with different-size packets

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X.25

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Frame Relay

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In Frame Relay, when. ______ is selected, it requires establishing and terminating phases

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a PVC

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an SVC

C

either (a) or (b)

D

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