计算机中常用一种检错码是CRC,即(9)码。在进行编码过程中要使用(10)运算。假设使用的生成多项式是C(x)=x5+x4+x+1。原始报文为11001010101,则编码后的报文为(11)。CRC码(12)的说法是正确的。在无线电通信中采用?中取3定比码,它规定码字K为7位,并且其中总有且仅有3个“1”。则编码效率为(13)。
(129)
(127)
(128)
(126)
An instruction is made up of operations that(68)the function to be performed and operands that represent the data to be operated on. For example, if an instruction is to perform. the operation of(69)two numbers, it must know(70)the two numbers are. The processor's job is to(71)instructions and operands from memory and to perform. each operation. Having done that, it signals memory to send it(72)instruction.
(124)
A firewall is a(71)system designed to(72)an organization's network against threats.
(122)
在常用的字处理软件中,选中文本块后,按下Ctrl键再拖曳鼠标,可以()
There are many page replacement algorithms in the page management. Most frequently used algorithm is(69).
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