Match List - I with List - II.

List - I (Computer attack/cyber crime)		List - II (Definition)
A.	Worm	I.	Misdirecting users to a fraudulent website without their knowledge or consent.
B.	Bot	II.	A malware that replicates itself in order to spread to other computers across the network.
C.	Denial-of-Service	III.	Flooding sites with useless traffic to overwhelm a network.
D.	Pharming	IV.	A malware that responds to external commands sent by an attacker.

Choose the correct answer from the options given below:

(A) Worm: A worm is a type of malware that replicates itself in order to spread to other computers across a network. This matches definition (II).

(B) Bot: A bot is malware that responds to external commands sent by an attacker, which matches definition (IV).

(C) Denial-of-Service: A Denial-of-Service attack floods a site with useless traffic in order to overwhelm the network, which corresponds to definition (III).

(D) Pharming: Pharming misdirects users to a fraudulent website without their knowledge or consent, matching definition (I).