Question

Which of the following is not an anti-spam technique?

(a) Signature-based content filtering

(b) DNS routing

(c) Bayesian Content Filtering

(d) Collaborative content filtering

This question was addressed to me in examination.

My question is from Attack Vectors in chapter Understanding Attack Vectors of Cyber Security

Answer 1

The correct answer is:

(b) DNS routing

DNS routing is a technique used for directing internet traffic to the appropriate servers, but it is not specifically an anti-spam technique. Anti-spam techniques, such as signature-based content filtering, Bayesian content filtering, and collaborative content filtering, are designed to detect and block unwanted emails based on their content or characteristics.