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FC0-U71 Practice Question: Which security best practice is being…

Exhibit

Refer to the exhibit.
C:\> nslookup example.com
Server: dns.company.com
Address: 192.168.1.1
Non-authoritative answer:
Name: example.com
Address: 93.184.216.34

Which security best practice is being demonstrated?

⚠ Common exam trap

Test-takers frequently confuse 'private DNS server' with 'static IP address' or 'dynamic IP address,' mistakenly thinking that IP address assignment methods are security controls, when in fact DNS server choice directly impacts query confidentiality and integrity.

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

✓

Using a private DNS server

Using a private DNS server enhances security by allowing an organization to control DNS resolution internally, preventing external interception or manipulation of DNS queries. This practice helps protect against DNS spoofing and ensures that internal resources are resolved using trusted, local records rather than relying on potentially compromised public DNS servers.

Answer analysis

Option-by-option breakdown

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

  • ✗

    Using a public DNS server

    Why it's wrong here

    Public DNS servers (e.g., 8.8.8.8) offer less control and may log queries.

  • ✗

    Using a static IP address

    Why it's wrong here

    Static IP is not directly related to DNS security.

  • ✓

    Using a private DNS server

    Why this is correct

    A private DNS server provides internal resolution and can enforce security policies.

  • ✗

    Using a dynamic IP address

    Why it's wrong here

    Dynamic IP is common for clients, not a security practice.

Visual reference

Client Recursive Resolver Root DNS (13 root servers) TLD DNS (.com, .org, …) Authoritative example.com query IP addr answer

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This FC0-U71 practice question is part of Courseiva's free CompTIA 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 FC0-U71 exam.