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[ 判断题 ] (2分)There is no difference between a host and an end system. ( )

A. True
B. False

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[ 单选题 ] (3分)By which of the following access technology, bandwidth is not shared among the users? ( )

A. WiFi
B. HFC
C. ADSL
D. None of the above

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The original reason for the Internet to use packet switching is ( ).

A. Statistical multiplexing enables efficient sharing of expensive long-haul links.
B. Packet switching enables data to be routed faster than circuit switching.
C. It is less work for a router to process a packet than to process the data in a circuit.
D. Packet switching requires simpler hardware on the routers than circuit switching.

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Web服务器是一种端系统。智能手机、便携机、PC机、联网的智能电器也都是端系统。

A. 对
B. 错

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OSI/RM体系结构规定网络协议划分为7层。

A. 对
B. 错

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[ 判断题 ] (2分)There is no difference between a host and an end system. ( )

A. True B. False

[ 单选题 ] (3分)By which of the following access technology, bandwidth is not shared among the users? ( )

The original reason for the Internet to use packet switching is ( ).

Web服务器是一种端系统。智能手机、便携机、PC机、联网的智能电器也都是端系统。

OSI/RM体系结构规定网络协议划分为7层。

A. True
B. False