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[ 判断题 ] UDP是一种无连接的服务,即在两个进程之间没有创建管道时所需的初始握手阶段;它提供不可靠的传输服务。( )

A. 对
B. 错

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[ 判断题 ] (2分) The full text in English of RFC is request for comments. ( )(2.0)

A. True
B. False

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[ 单选题 ] (3分) End system does not include ( ). ( )(3.0)

A. router
B. smart phone
C. PCs
D. Web servers

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[ 单选题 ] (3分) The original reason for the Internet to use packet switching is ( ). ( )(3.0)

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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[ 单选题 ] (3分) By which of the following access technology, bandwidth is not shared among the users? ( )(3.0)

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

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[ 判断题 ] UDP是一种无连接的服务,即在两个进程之间没有创建管道时所需的初始握手阶段;它提供不可靠的传输服务。( )

A. 对 B. 错

[ 判断题 ] (2分) The full text in English of RFC is request for comments. ( )(2.0)

[ 单选题 ] (3分) End system does not include ( ). ( )(3.0)

[ 单选题 ] (3分) The original reason for the Internet to use packet switching is ( ). ( )(3.0)

[ 单选题 ] (3分) By which of the following access technology, bandwidth is not shared among the users? ( )(3.0)

A. 对
B. 错