Question

Digital signals
(i) do not provide a continuous set of values.
(ii) represent values as discrete steps.
(iii) can utilize binary system.
(iv) can utilize decimal as well as binary systems.
Which of the above statements are true?

• A. (i) and (ii) only
• B. (ii) and (iii) only
• C. (i), (ii) and (iii) but not (iv)
• D. (i), (ii), (iii) and (iv)

Answer 1

Answer: (C)

(i), (ii) and (iii) but not (iv)

A digital signal uses the binary ($0$ and $1$) system for transferring message signals. Such a system cannot utilize the decimal signals, represent discontinuous values line-of-sight communication, which is nothing but space system (which corresponds to analogue signals). Digital signals represent discontinuous values.