A system transmits a block of information containing ten packets each with eight data bits, a start bit, and a stop bit. Additional 'overhead' bits include a 4-bit synchronization code at the beginning of the block and a parity bit at the end of the block. What is the transmission efficiency?

Question

Consider the transmission of data bits 110001011 over a link that uses Cyclic Redundancy Check (CRC) code for error detection. If the generator bit pattern is given to be 1001, which one of the following options shows the remainder bit pattern appended to the data bits before transmission?

Answer 1

To determine transmission efficiency: Each packet comprises 8 data bits and 2 overhead bits (1 start bit + 1 stop bit), totaling 10 bits per packet. For 10 packets, this equates to 10 × 10 = 100 bits. Including an additional 5 overhead bits (4 synchronization bits + 1 parity bit) brings the total transmitted bits to 100 + 5 = 105 bits. Therefore, transmission efficiency is calculated as (80 useful data bits / 105 total transmitted bits) × 100, yielding 78.8%.

A system transmits a block of information containing ten packets each with eight data bits, a start bit, and a stop bit. Additional 'overhead' bits include a 4-bit synchronization code at the beginning of the block and a parity bit at the end of the block. What is the transmission efficiency?

Show Hint

The Correct Option is C

Solution and Explanation

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