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Questions and Answers
What is the primary purpose of adding an error-detecting code near the end of each frame?
What is the primary purpose of adding an error-detecting code near the end of each frame?
- To encrypt data for secure transmission
- To compress data for faster transmission
- To correct errors that occur during transmission
- To detect errors that occur during transmission (correct)
What is the result of the modulo operation (590 mod 256)?
What is the result of the modulo operation (590 mod 256)?
- 2
- 590
- 78 (correct)
- 256
What type of error correction is used when the receiver requests retransmission of data?
What type of error correction is used when the receiver requests retransmission of data?
- Backward Error Correction (correct)
- Checksum Code
- Error Detection Code
- Forward Error Correction
What is the purpose of a checksum?
What is the purpose of a checksum?
What is the result of the Java expression (100+0+155+30+55+250) % 256?
What is the result of the Java expression (100+0+155+30+55+250) % 256?
What is the minimum number of bits that must differ between all valid Hamming codes?
What is the minimum number of bits that must differ between all valid Hamming codes?
What is the maximum number of bits that can be corrected by a Hamming code with a minimum distance of 7?
What is the maximum number of bits that can be corrected by a Hamming code with a minimum distance of 7?
What is the purpose of calculating the remainder of 590 divided by 256 in the context of error detection?
What is the purpose of calculating the remainder of 590 divided by 256 in the context of error detection?
What is the benefit of using a hash function like MD5 or SHA256 in error detection?
What is the benefit of using a hash function like MD5 or SHA256 in error detection?
What is the primary purpose of forward error correction?
What is the primary purpose of forward error correction?
What is the benefit of multiplexing several Hamming codes during transmission in situations with bursty noise?
What is the benefit of multiplexing several Hamming codes during transmission in situations with bursty noise?
What is the process called when the receiver recalculates the error-detecting code and compares it with the code stored in the frame?
What is the process called when the receiver recalculates the error-detecting code and compares it with the code stored in the frame?
What is the purpose of the error-detecting code in each frame of data transmission?
What is the purpose of the error-detecting code in each frame of data transmission?
How does the number of extra bits needed for Hamming codes increase with the number of data bits encoded?
How does the number of extra bits needed for Hamming codes increase with the number of data bits encoded?
What is an example of a technology that uses error detection and correction codes?
What is an example of a technology that uses error detection and correction codes?
What is the purpose of backward error correction?
What is the purpose of backward error correction?
What is the name of the technique used to keep the bottom 8 bits of the result when calculating the remainder of 590 divided by 256?
What is the name of the technique used to keep the bottom 8 bits of the result when calculating the remainder of 590 divided by 256?
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