Which transmission type transmits characters whenever convenient, one character at a time, independently of other characters?

Which transmission type transmits characters whenever convenient, one character at a time, independently of other characters?

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

Answer: (A)

Characters arriving whenever convenient, one at a time, with no need for a shared timing reference, is a hallmark of asynchronous transmission. In this mode, each character is sent as an individual unit, typically framed with start and stop bits so the receiver can detect where one character ends and the next begins. Because there’s no global clock coordinating the sender and receiver, gaps between characters can vary, and the transmitter can hold back until a character is ready, transmitting it when convenient. This contrasts with synchronous transmission, where data is sent in continuous blocks tied to a shared clock, so timing is strict; isochronous transmission, which also relies on fixed timing to preserve regular data flow for real-time streams; and burst transmission, which sends data in brief, high-speed bursts rather than single characters spaced independently.

Characters arriving whenever convenient, one at a time, with no need for a shared timing reference, is a hallmark of asynchronous transmission. In this mode, each character is sent as an individual unit, typically framed with start and stop bits so the receiver can detect where one character ends and the next begins. Because there’s no global clock coordinating the sender and receiver, gaps between characters can vary, and the transmitter can hold back until a character is ready, transmitting it when convenient. This contrasts with synchronous transmission, where data is sent in continuous blocks tied to a shared clock, so timing is strict; isochronous transmission, which also relies on fixed timing to preserve regular data flow for real-time streams; and burst transmission, which sends data in brief, high-speed bursts rather than single characters spaced independently.