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问题:

在网络工程中通常用的线缆标准为?A.568AB.568B

在网络工程中通常用的线缆标准为?

A.568A

B.568B


  参考答案

正确答案:B

相关题目:


A.data
B.byte
C.packet
D.bit


A.direct-sequence
B.discrete-sequence
C.duplicate-sequence
D.dedicate-sequence

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.
Spread spectrum simply means that data is sent in(66)pieces over a number of the discrete frequencies available for use at any time in the specified range. Devices using(67) spread spectrum (DSSS)communicate by splitting each(68)of data into several parts and sending them concurrently on different (69), DSSS uses a lot of the available(70), about 22 megahertz (MHz).
A.small
B.high
C.low
D.long