Match List I (Malware type) with List II (Characteristic) and choose the correct answer from the options given below.

List I

i.Trojan Horse

ii.Worm

iii.Logic Bomb

iv.Rootkit

List II

a.Propagates copies of itself through a network

b.Triggers action when a certain condition occurs

c.Hooks standard OS calls to hide the existence of malware

d.Contains an unexpected covert effect

Ai-a, ii-b, iii-c, iv-d

Bi-b, ii-c, iii-d, iv-a

Ci-c, ii-d, iii-a, iv-b

Di-d, ii-a, iii-b, iv-c ✓ Correct

Correct answer: (D) i-d, ii-a, iii-b, iv-c

Explanation

A Trojan Horse hides an unexpected covert effect inside a program that appears harmless.

A worm propagates copies of itself through a network without needing a host file.

A logic bomb triggers its action when a certain condition or event occurs.

A rootkit hooks standard operating system calls to hide the presence of malware.

Each malware type is defined by how it spreads, hides, or activates.

Unlike a virus, a worm can spread on its own without user action.

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