Computer Networks-Digital Signature (GATE Computer Science): Questions 1 - 2 of 2

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Question number: 1

» Computer Networks » Digital Signature

MCQ▾

Question

A2.0 kHz signal is sampled at the rate of 2.8 kHz and the samples are applied to an ideal rectangular LPF with cut-off frequency of 2.2 kHz, then the output of the filter contains

Choices

Choice (4) Response

a.

800Hz, 900 and 100 Hz components

b.

800 Hz and 100 Hz components

c.

Only 800 Hz component

d.

800 Hz and 900 Hz components

Question number: 2

» Computer Networks » Digital Signature

MCQ▾

Question

A digital signature needs a ________ system.

Choices

Choice (4) Response

a.

asymmetric-key

b.

symmetric-key

c.

key

d.

Question does not provide sufficient data or is vague

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