Which transmission method sends data in blocks, where a block of data is sent as a frame?

Which transmission method sends data in blocks, where a block of data is sent as a frame?

• A. Synchronous Transmission
• B. Asynchronous Transmission
• C. Burst Transmission
• D. Packetized Transmission

Answer: (A)

Synchronous transmission uses a shared clock between sender and receiver, so data can be sent in fixed-size blocks called frames. Each frame carries data plus synchronization and control information, allowing the link to carry a continuous stream without the gaps that come from sending one character at a time. Because timing is coordinated, data is transmitted and received in these well-defined frames, making the block-for-frame approach efficient and reliable on high-speed links. Asynchronous transmission, by contrast, sends characters individually with start and stop bits, creating gaps between characters rather than framed blocks. Burst transmission describes sending data in quick bursts but isn’t inherently organized into framed blocks. Packetized transmission uses packets (often variable length) with headers and addressing, which is a different way of structuring data than fixed frames in synchronous framing.

Synchronous transmission uses a shared clock between sender and receiver, so data can be sent in fixed-size blocks called frames. Each frame carries data plus synchronization and control information, allowing the link to carry a continuous stream without the gaps that come from sending one character at a time. Because timing is coordinated, data is transmitted and received in these well-defined frames, making the block-for-frame approach efficient and reliable on high-speed links.

Asynchronous transmission, by contrast, sends characters individually with start and stop bits, creating gaps between characters rather than framed blocks. Burst transmission describes sending data in quick bursts but isn’t inherently organized into framed blocks. Packetized transmission uses packets (often variable length) with headers and addressing, which is a different way of structuring data than fixed frames in synchronous framing.