第 1 题
1 分What is the primary purpose of a start bit in asynchronous data transmission?
AQA A Level · Computer Science 7517
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第 2 题
1 分A communication link has a baud rate of \( 4800 \) baud. If each signal change represents \( 3 \) bits, what is the bit rate of this link?
第 3 题
1 分Define latency in the context of network communication.
第 4 题
1 分Which of the following best defines baud rate in the context of data transmission?
第 5 题
1 分A network designer decides to use WPA2 (WiFi Protected Access 2) for a new corporate office. What security feature does WPA2 primarily provide?
第 6 题
2 分In the context of networking, define the term latency.
先自己写一遍答案，再对照解题步骤。
第 7 题
3 分Calculate the bit rate of a communication channel that has a baud rate of 2400 and encodes 3 bits per signal change.
先自己写一遍答案，再对照解题步骤。
第 8 题
5 分In an asynchronous serial transmission, explain the function of start and stop bits and how they allow the receiver to process data correctly.
先自己写一遍答案，再对照解题步骤。
第 9 题
3 分Explain the difference between serial and parallel data transmission. Provide one reason why serial transmission is typically preferred over parallel for long-distance communication.
先自己写一遍答案，再对照解题步骤。
第 10 题
3 分A digital communication system is configured with a baud rate of 4800. If each signal change encodes 3 bits of data, calculate the bit rate of the system. Explain the relationship between bit rate and baud rate in this context.
先自己写一遍答案，再对照解题步骤。
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