1Z0-1085-26 Core Oci Services Practice Question
You are designing a secure web application architecture. You want to ensure that incoming database traffic is restricted to only web servers belonging to a specific Network Security Group, without exposing database ports to the rest of the subnet. Which feature enables this?
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
✓
Network Security Groups (NSGs)
Network Security Groups (NSGs) allow you to specify security rules referencing other NSGs as sources or destinations for fine-grained filtering.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Dynamic Routing Gateway policies
Why it's wrong here
DRG routes inter-network traffic.
- ✗
Internet Gateway rules
Why it's wrong here
Internet Gateway routes internet traffic.
- ✓
Network Security Groups (NSGs)
Why this is correct
NSGs provide VNIC-level security rules with cross-NSG references.
- ✗
Security Lists
Why it's wrong here
Security lists apply to entire subnets, not individual VNIC groups.
Visual reference
About these practice questions
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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.