Computer Security Questions and Answers

Answer: D

Correct answer: None of the above

A firewall is a protective measure, not a threat: it filters connections to and from a machine. It is neither a virus, nor a worm, nor a security threat of any kind, so none of the three categories fits.

Answer: A

Correct answer: Ignorance

Trojans, adware and crackers all come from outside the organisation. Ignorance is an internal weakness - a user who does not know what not to click - which is what makes it the odd one out.

Answer: C

Correct answer: DoS attacks

A denial of service attack is a recognised class of computer threat: it floods a system until it can no longer serve anyone. Phishing is a technique rather than a class, and soliciting and stalking are social offences rather than attacks on a computer.

Answer: B

Correct answer: Cookies

A cookie is a small piece of data a site asks the browser to store and return on later visits, which is how a site remembers a user between requests. Malware and adware are unwanted programs rather than stored data.

Answer: D

Correct answer: To hide malicious activity on the network.

Traffic sent through a proxy appears to come from the proxy, so the attacker's own address does not appear in the target's logs. Chaining several proxies makes tracing back harder still.

Answer: D

Correct answer: The business strategy of the company

Securing a system depends on how it is configured, how the network is laid out, and how capable the attacker is. What the company sells and how it plans to grow has no bearing on whether an attack succeeds.

Answer: B

Correct answer: MITM

In a man-in-the-middle attack the attacker interposes a server of his own between the two parties and relays their traffic, so each believes it is talking to the other while everything passes through him. The other three are protocols, not attacks.