M02
Basics of computing, networks, security, programming concepts, office applications
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Every served question is explained like this — including why each wrong option is wrong.
A 'Brouter' combines the features of a:
Why C is correct
A brouter (bridge-router) routes packets for protocols it understands (router function, network layer) and bridges all other traffic (bridge function, data-link layer) - by name and function a combination of bridge and router.
A digital signature is a mathematical technique used to check:
Why A is correct
A digital signature cryptographically binds a message to its signer, providing authenticity (who sent it), integrity (unaltered) and non-repudiation (sender cannot deny) - the classic security triad of signatures.
A technology which uses the hiding of information in a picture is called:
Why A is correct
Steganography conceals the very existence of information by embedding it inside carrier files, classically images (e.g. in the least-significant bits of pixels).
14 questions · +2.5/−⅓ UPSC marking · explanations after every answer. No sign-up needed.