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1Z0-1085-26 Core Oci Services Practice Question

Which TWO statements are correct regarding OCI Virtual Cloud Network (VCN) Security Lists and Network Security Groups (NSGs)? (Choose two.)

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

Security Lists apply to all VNICs contained within a specific subnet.

Security lists apply to entire subnets, while NSGs apply to specific sets of VNICs chosen by the administrator. Both support stateful and stateless rules.

Answer analysis

Option-by-option breakdown

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

  • Security Lists can reference another Security List as a rule source.

    Why it's wrong here

    Security lists reference CIDR blocks, whereas NSGs can reference other NSGs.

  • Security Lists apply to all VNICs contained within a specific subnet.

    Why this is correct

    Security lists are subnet-level security constructs.

  • Network Security Groups can only be used in public subnets.

    Why it's wrong here

    NSGs can be used in both public and private subnets.

  • Network Security Groups apply to a specific set of VNICs chosen across multiple subnets.

    Why this is correct

    NSGs apply to specific VNICs regardless of subnet assignment.

  • Security Lists do not support stateful firewall rules.

    Why it's wrong here

    Both security lists and NSGs support stateful and stateless rules.

Visual reference

192.168.1.0 /24 256 addresses (254 usable) 192.168.1.0 /25 Subnet A 128 addr (126 usable) 192.168.1.128 /25 Subnet B 128 addr (126 usable) Borrowing 1 bit from host portion creates 2 subnets (/25)

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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 1Z0-1085-26 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 1Z0-1085-26 exam.