A DATA BUS THAT IS CAPABLE OF TRANSFERRING 8 BYTES OF DATA AT ONCE CAN BE RATED AS

• A. a 16-bit data bus
• B. a 32-bit data bus
• C. a 64-bit data bus ✓ 
• D. an 8- bit data bus

The answer to the question is: C. a 64-bit data bus

A data bus that is capable of transferring 8 bytes of data at once can be rated as a 64-bit data bus. This is because the size of the data bus is typically measured in bits, and the number of bits in a data bus determines the amount of data that can be transferred at one time. In this case, since 1 byte is equal to 8 bits, a data bus capable of transferring 8 bytes at once would be considered a 64-bit data bus.

The rating of a data bus is determined by the number of parallel connections it has, which directly corresponds to the number of bits it can transfer at once. A 64-bit data bus has 64 parallel connections, allowing it to transfer 64 bits (or 8 bytes) of data simultaneously.

In computer architecture, the width of the data bus is an important factor in determining the overall performance and capabilities of a system. A wider data bus allows for faster and more efficient data transfer between components such as the CPU, memory, and peripherals.

In summary, a data bus that is capable of transferring 8 bytes of data at once would be rated as a 64-bit data bus due to its ability to transfer 64 bits of data simultaneously.