Define a byte and its relation to memory.

Define a byte and its relation to memory.

• A. A group of 4 bits; a minor unit of data transfer.
• B. A group of 8 bits; a base unit of storage and data transfer.
• C. A type of network packet.
• D. A measure of CPU clock speed.

Answer: (B)

A byte is eight bits—the fundamental unit for representing information in memory. Each bit is a 0 or 1; eight of them together can encode 256 different values, enough to store a character or small number. In most systems, memory is addressed in bytes, so memory capacity is described in bytes (and multiples like kilobytes or megabytes). Data moves and is stored in terms of bytes, even if the hardware bus can carry more bits at once; the byte is the standard reference for size and transfer quantity. A nibble is four bits, which is smaller than a byte, while network packets or CPU clock speed relate to other concepts rather than defining what a byte is or its role in memory.

A byte is eight bits—the fundamental unit for representing information in memory. Each bit is a 0 or 1; eight of them together can encode 256 different values, enough to store a character or small number. In most systems, memory is addressed in bytes, so memory capacity is described in bytes (and multiples like kilobytes or megabytes). Data moves and is stored in terms of bytes, even if the hardware bus can carry more bits at once; the byte is the standard reference for size and transfer quantity. A nibble is four bits, which is smaller than a byte, while network packets or CPU clock speed relate to other concepts rather than defining what a byte is or its role in memory.