已知某符号的编码为“0100101”，若增加一个偶校验位，则其编码变为（）。
- A.10100101
- B.00100101
- C.10100011
- D.01010101
正确答案及解析
正确答案
解析
奇偶校验码是奇校验码和偶校验码的统称，是一种最基本的检错码。它是由n-1位信息码和1位校验码组成，可以表示成为（n，n-1）。如果是奇校验码，在附加上一个校验码以后，码长为n的码字中“1”的个数为奇数个；如果是偶校验码，在附加上一个校验码以后，码长为n的码字中“1”的个数为偶数个。根据奇偶校验的定义，偶校验即增加校验位后，该编码各位上1的个数刚好是偶数。最后将校验位添加到编码的最高位。题中通过观察，偶校验位应该为1，将1添加到编码最高位后，最后得到的编码为：10100101。
包含此试题的试卷
你可能感兴趣的试题
Advancements in （ ）have contributed to the growth of the automotive industry through the creation and evolution of self-driving vehicles.
-
- A.Artificial Intelligence
- B.Cloud Computing
- C.Internet of Things
- D.Big Data
- 查看答案
In project human resource management , （ ）is not a source of power for the project manager.
-
- A.referent power
- B.expert power
- C.reward power
- D.audit power
- 查看答案
At the project establishment stage , the feasibility study mainly includes techinical feasibility analysis , （ ）, operation environment feasibility analysis and other aspects of feasibility analysis.
-
- A.detail feasibility analysis
- B.opportunity analysis
- C.economic feasibility analysis
- D.risk analysis
- 查看答案
（ ）is a grid that shows the project resources assigned to each work package.
-
- A.Stakeholder engagement assessment matrix
- B.Requirements traceability matrix
- C.Probability and impact matrix
- D.Responsibility assignment matrix
- 查看答案
Xinhua News Agency reported in January 2022，Chian will further promote the developmet of a digital economy during the 14th Five-Year Plan eriod（2021-2025）. The plan also emphasized industrial （ ）transformation.
-
- A.digital
- B.networking
- C.intelligentize
- D.informatization
- 查看答案