Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-008-001
Comment appelle-t-on le code numérique formé d'éléments de longueurs différentes?
- ABaudot
- BASCII
- CVaricode
- DAX.25
Correct answer: C — Varicode. Question tirée de la banque officielle d'ISDE.
Why
Varicode is the right choice because it uses bits of different lengths to represent characters, making common letters shorter and rare ones longer to speed up transmission. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing is section A-005 of the Advanced exam: Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.
Drill A-005 — free, no account