SSCP · Question #827
Which of the following statements pertaining to Asynchronous Transfer Mode (ATM) is false?
The correct answer is C. It carries various sizes of packets. ATM uses fixed-size cells, not variable-size packets. Each ATM cell is exactly 53 bytes: a 5-byte header and a 48-byte payload. This fixed cell size is a defining characteristic of ATM that enables predictable, low-latency transmission. ATM is indeed capable of carrying voice…
Question
Which of the following statements pertaining to Asynchronous Transfer Mode (ATM) is false?
Options
- AIt can be used for voice
- Bit can be used for data
- CIt carries various sizes of packets
- DIt can be used for video
How the community answered
(18 responses)- C94% (17)
- D6% (1)
Explanation
ATM uses fixed-size cells, not variable-size packets. Each ATM cell is exactly 53 bytes: a 5-byte header and a 48-byte payload. This fixed cell size is a defining characteristic of ATM that enables predictable, low-latency transmission. ATM is indeed capable of carrying voice, data, and video traffic (it is a multi-service technology), making statements A, B, and D all true. Statement C is false because ATM does not carry various sizes of packets.
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