1Z0-1072-26 Networking Practice Question
What is the smallest IPv4 CIDR block size supported for an OCI Virtual Cloud Network (VCN)?
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
✓
/30
The smallest VCN CIDR block supported by OCI is /30, and the largest is /16.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
/30
Why this is correct
OCI supports VCN sizes ranging from /16 to /30.
- ✗
/24
Why it's wrong here
While /24 is valid, it is not the smallest; /30 is smaller.
- ✗
/32
Why it's wrong here
/32 represents a single host IP and is not valid for a VCN.
- ✗
/8
Why it's wrong here
/8 is too large; the largest supported VCN size is /16.
Visual reference
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One of 521 original 1Z0-1072-26 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Oracle exam blueprint
This 1Z0-1072-26 practice question is part of Courseiva's free Oracle 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 1Z0-1072-26 exam.