1Z0-1072-26 Networking Practice Question
Which THREE statements regarding OCI Network Security Groups (NSGs) vs Security Lists are correct?
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
✓
NSGs apply to a specific set of VNICs of your choice, whereas Security Lists apply to all VNICs in a subnet.
NSGs apply to specific VNICs and span subnets within a VCN, whereas Security Lists apply to all VNICs in a subnet. 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.
- ✗
NSGs are mandatory for every subnet, while Security Lists are optional.
Why it's wrong here
Security Lists are created by default with VCNs, making them the default subnet firewall mechanism if NSGs are not used.
- ✓
NSGs apply to a specific set of VNICs of your choice, whereas Security Lists apply to all VNICs in a subnet.
Why this is correct
This is the primary architectural difference in scope between NSGs and Security Lists.
- ✗
Security Lists can span across multiple VCNs, while NSGs cannot.
Why it's wrong here
Neither Security Lists nor NSGs can span across multiple VCNs.
- ✓
NSG rules can reference other NSGs as sources or destinations.
Why this is correct
NSG-to-NSG referencing allows simplified security group management across application tiers.
- ✓
Both Security Lists and NSGs support stateful and stateless rules.
Why this is correct
Both firewall constructs support stateful and stateless rule configurations.
Visual reference
About these practice questions
This 1Z0-1072-26 question is part of Courseiva's 524-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. 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.