Question

There are ______ subtypes of reconnaissance.

(a) 2

(b) 3

(c) 4

(d) 5

This question was addressed to me in an online interview.

My doubt is from Generic Steps for Security topic in chapter Cyber Security of Cyber Security

Answer 1

The correct option is (a) 2

Easy explanation: Reconnaissance can be done in two different ways. 1^st, Active Reconnaissance which involves interacting with the target user or system directly in order to gain information; 2^nd, Passive Reconnaissance, where information gathering from target user is done indirectly without interacting with the target user or system.