200-901 Network Fundamentals Practice Question
Which of the following is a private IPv4 address range as defined by RFC 1918?
⚠ Common exam trap
Cisco often tests the exact prefix boundaries of RFC 1918, and the trap here is confusing the 172.16.0.0/12 range (which includes 172.16.0.0 – 172.31.255.255) with the similar-looking 172.32.0.0/12, which is a public block.
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
✓
192.168.0.0/16
RFC 1918 reserves the 192.168.0.0/16 block (192.168.0.0 – 192.168.255.255) as a private IPv4 address range, meaning these addresses are not routable on the public internet and are intended for use within private networks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
192.168.0.0/16
Why this is correct
This is a private range for internal networks.
- ✗
169.254.0.0/16
Why it's wrong here
169.254.0.0/16 is link-local (APIPA), not private.
- ✗
11.0.0.0/8
Why it's wrong here
Private range is 10.0.0.0/8, not 11.0.0.0.
- ✗
172.32.0.0/12
Why it's wrong here
Private range is 172.16.0.0/12, not 172.32.0.0.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco 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 200-901 exam.