Which OSI layer does a bridge operate at?

A．the Physical Layer

B．the Network Layer

C．the Transport Layer

D．the Data Link Layer

[单选题]Which OSI layer does a Router operate at?A．the Physical LayerB．the Data Link LayerC．the Transfer LayerD．the Network Layer

[单选题]A．t which layer of the OSI model does the protocol that provides the information displayed by the "show cdp neighbors" command operate?A．TransportB．PhysicalC．ApplicationD．Data linkE．Network

[单选题]is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication。A．The virtual addressB．The subnet addressC．The MAC addressD．The IP address

[单选题]( ) is a six bytes OSI layer 2 address which is burned into every networkin

[单选题]( )is a six bytes OSI layer 2 address which is burned into every networking

[单选题]Which is the second layer from the bottom in Open System Interconnection Reference Model? (71)．(71) A. ApplicationB．Data linkC．NetworkD．Session

[单选题]Which of the following does not contain a non-finite clause?A．He swims in the river every day.B．Do you mind my shutting the door?C．It's been nice talking to you.D．There being nothing to do, he left.

[单选题]Which of the following does not contain a non-finite clause?A．He swims in the river every day.B．Do you mind my shutting the door?C．It's been nice talking to you.D．There being nothing to do, he left.

[单选题]is the 4th layer of the OSI reference model responsible for reliable network communication between end nodes.A．Data link layerB．Session layerC．Transport layerD．Application layer

[单选题]Which of the following does the author most probably agree with?A．) The goal of the anthropologist is to understand the way in which people express themselves.B．) The anthropologist tries to understand why cultures are carried on without any change.C