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ISC2 CC Network Security Practice Question

A network administrator wants to control traffic based on source and destination IP addresses and port numbers, while also tracking the state of connections. Which type of firewall should they choose?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Stateful inspection

Stateful inspection firewalls track connection state and filter based on IP/port.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Stateless packet filtering

    Why it's wrong here

    Stateless filters do not track connection state.

  • Application proxy

    Why it's wrong here

    Application proxy works at higher layers and proxies applications.

  • Stateful inspection

    Why this is correct

    Stateful firewalls maintain state tables and filter based on connection context.

  • Next-generation firewall (NGFW)

    Why it's wrong here

    NGFW includes additional features but stateful inspection is the base.

Visual reference

Source Router + ACL permit 10.0.0.0/8 deny any Server 10.0.0.5 ✓ 192.168.1.1 ✗ dropped ACLs evaluate top-down; first match wins — implicit deny all at end

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This CC practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CC exam.