Which of the following statements A-C is/are correct about cyber attacks? A.…
2023
Which of the following statements A-C is/are correct about cyber attacks?
A. Spyware prevents access to a website
B. Virus is self-replicating malicious code on a computer.
C. Denial-of-service (DoS) captures all data entered using a keyboard to obtain personal data.
Choose the correct answer from the options given below:
Answer: B. B only — CONCEPTCyber-attack labels are classified by their mechanism, not merely by their harmful effect. Spyware covertly gathers information; a virus propagates by…
- A.
A only
- B.
B only
- C.
C only
- D.
A & B only
Attempted by 9 students.
Show answer & explanation
Correct answer: B
CONCEPT
Cyber-attack labels are classified by their mechanism, not merely by their harmful effect. Spyware covertly gathers information; a virus propagates by copying itself into host programs or files; denial of service prevents authorized access; and a keylogger records keystrokes.
APPLICATION
Statement A assigns website-access prevention to spyware. Spyware is defined by covert information gathering, while denial of access is a denial-of-service behavior; therefore A is false.
Statement B describes self-replication. A virus propagates by inserting copies of itself into host programs or files, so B is true.
Statement C assigns keyboard-data capture to denial of service. Denial of service disrupts availability, while recording keystrokes is keylogging; therefore C is false.
CONTRAST
A only depends on statement A, whose mechanism is mismatched.
C only depends on statement C, whose mechanism is mismatched.
A and B only includes statement A along with B, so it retains the spyware mismatch.
CROSS-CHECK
Cross-check the security objective affected by each mechanism: spyware and keylogging concern covert information capture, viruses concern propagation of malicious code, and denial of service concerns availability. The three definitions again leave only statement B correct.
RESULT
Therefore, only B is correct: B only.