Which of the following are correct in context of network security? A. Virus,…
2024
Which of the following are correct in context of network security?
A. Virus, worms, and Trojan horse are examples of Malware
B. Trojan horse is a non-self-replicating malicious software
C. After receiving payment, if the product is not delivered it is an example of phishing
D. In https, 's' stands for Secure
Choose the correct answer from the options given below:
Answer: D. A, B and D only — Concept: Malware — short for "malicious software" — is the umbrella term for any program written to damage a system, disrupt its working, or gain unauthorised…
- A.
A, B and C only
- B.
B, C and D only
- C.
A, C and D only
- D.
A, B and D only
Attempted by 32 students.
Show answer & explanation
Correct answer: D
Concept: Malware — short for "malicious software" — is the umbrella term for any program written to damage a system, disrupt its working, or gain unauthorised access to it. Malware categories are named on different grounds: some by purpose or behaviour (ransomware, spyware, adware, rootkits), and the three compared here — virus, worm and Trojan horse — by whether and how they replicate. Separately from the software itself, attack techniques are named after the deception they use: phishing is a deceptive communication impersonating a trusted entity (a bank, a familiar website, an official-looking mail) that lures the victim into an action — disclosing credentials or other sensitive data, making a payment, or running malicious software. Protocol names carry their security layer in the name itself: HTTPS is HTTP carried over SSL/TLS, that is, "HyperText Transfer Protocol Secure".
Malware family | Self-replicating | How it spreads |
|---|---|---|
Virus | Yes | Attaches to a host file and copies itself when that file is run |
Worm | Yes | Copies itself across a network on its own, with no host file |
Trojan horse | No | Poses as useful software; makes no copy of itself, so it must be delivered from outside — usually a user persuaded to install it |
Application: Test each statement against those definitions.
Virus, worms and Trojan horse are examples of malware: all three are programs written with malicious intent, so all three sit under the malware umbrella. This statement holds.
A Trojan horse is non-self-replicating malicious software: a Trojan has no mechanism for copying itself, unlike a virus or a worm, so it has to be delivered from outside — typically by persuading a user to install it, though it can also be dropped by another program or through an exploited vulnerability. This statement holds.
Taking payment and then not delivering the product is phishing: this is non-delivery fraud, an online shopping scam. There is no deceptive communication impersonating a trusted entity to lure the victim into an action; an ordinary purchase is simply never fulfilled. This statement does not hold.
In https, the "s" stands for Secure: HTTPS expands to HyperText Transfer Protocol Secure, the "s" marking the SSL/TLS layer under HTTP. This statement holds.
Cross-check: Only the payment statement fails, so the statements that survive are A, B and D — the combination "A, B and D only". The contrast worth remembering: phishing turns on a deceptive lure that impersonates a trusted party, whatever the attacker goes on to extract, whereas non-delivery fraud carries no such impersonation and simply leaves a genuine purchase unfulfilled. Both are cyber crimes, and both are distinct from malware, which is a program rather than a technique of deception.