Question

Which of the following statements about how bits represent discrete information in digital communication are true?

Option 1: Bits can only have values of 0 or 1.
Option 2: In digital communication, bits are used to represent analog signals.
Option 3: A byte is always composed of 8 bits.
Option 4: Error-checking codes are used to ensure accurate transmission of bits.

Answer 1

Bits in digital communication can only have values of 0 or 1, representing digital forms of analog signals, and a byte consists of 8 bits. Error-checking codes are indeed used to ensure the accurate transmission of bits.

Step-by-step explanation:

In digital communication, bits play a crucial role in representing discrete information. The statements provided about bits in digital communication require evaluation for their accuracy.

• Option 1: Bits can only have values of 0 or 1. This statement is true. In digital systems, a bit is the basic unit of data and can represent two states, often interpreted as 0 or 1.
• Option 2: In digital communication, bits are used to represent analog signals. This is true in the context that bits are used to represent the digital form of analog signals after a process known as analog-to-digital conversion.
• Option 3: A byte is always composed of 8 bits. This statement is true. By conventional definition, a byte consists of 8 bits.
• Option 4: Error-checking codes are used to ensure accurate transmission of bits. This is true as error-checking mechanisms like parity bits, checksums, and more sophisticated protocols are used to detect and correct errors in bit transmission.