PT0-003 Question #139: Real Exam Question with Answer & Explanation

The correct answer is C: Host discovery. Host Discovery is typically the initial step in a network penetration test. It involves identifying the active devices on the network. This provides a map of what devices are present and potentially what services and operating systems they are running, which then informs subseque

Submitted by sofia.br· Mar 6, 2026Reconnaissance and enumeration

Question

A consultant starts a network penetration test. The consultant uses a laptop that is hardwired to the network to try to assess the network with the appropriate tools. Which of the following should the consultant engage first?

Options

AService discovery
BOS fingerprinting
CHost discovery
DDNS enumeration

Explanation

Host Discovery is typically the initial step in a network penetration test. It involves identifying the active devices on the network. This provides a map of what devices are present and potentially what services and operating systems they are running, which then informs subsequent steps such as service discovery, OS fingerprinting, and DNS enumeration.

Topics

#Penetration testing methodology#Host discovery#Network reconnaissance

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