题目内容

For( ) links that have a single sender at one end of the link and a single receiver at the other end of the link.

A. point-to-point
B. broadcast
C. multicast
D. all of the above

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With ( )transmission, the nodes at both ends of a link may transmit packets at the same time.

A. half-duplex（半双工）
B. full-duplex（全双工）
C. simplex(单工)
D. synchronous

With ( ) transmission, a node can not both transmit and receive at the same time.

A. half-duplex（半双工）
B. full-duplex（全双工）
C. simplex(单工)
D. synchronous

Which of the following functions can’t be implemented in the NIC? ( )

A. encapsulation and decapsulation
B. error detection
C. multiple access protocol
D. routing

( )divides time into time frames and further divides each time frame into N time slots.

A. FDM
B. TDM
CDMA
D. CSMA