Which statement best describes parallel transmission?

Which statement best describes parallel transmission?

• A. Sending data across multiple wires simultaneously by transmitting multiple bits at once
• B. Sending data one bit at a time on a single wire
• C. Transmitting only in one direction
• D. Converting digital signals to analog

Answer: (A)

Parallel transmission means sending several bits at the same time over multiple wires, with each wire carrying a bit during the same time interval. This higher-throughput approach works well over short distances because multiple bits are moved in one clock cycle. It differs from serial transmission, where bits are sent one after another on a single line, which can be slower at the same clock rate but uses fewer wires and avoids timing skew issues over longer runs. The description that matches this is sending data across multiple wires simultaneously by transmitting multiple bits at once. The other ideas describe different concepts: one bit at a time on a single wire is serial transmission; transmitting in only one direction relates to bidirectionality, not the parallel/serial distinction; converting digital signals to analog is digital-to-analog conversion, not about the transmission method.

Parallel transmission means sending several bits at the same time over multiple wires, with each wire carrying a bit during the same time interval. This higher-throughput approach works well over short distances because multiple bits are moved in one clock cycle. It differs from serial transmission, where bits are sent one after another on a single line, which can be slower at the same clock rate but uses fewer wires and avoids timing skew issues over longer runs. The description that matches this is sending data across multiple wires simultaneously by transmitting multiple bits at once. The other ideas describe different concepts: one bit at a time on a single wire is serial transmission; transmitting in only one direction relates to bidirectionality, not the parallel/serial distinction; converting digital signals to analog is digital-to-analog conversion, not about the transmission method.