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Core Oci ServicesmediumMultiple ChoiceObjective-mapped

1Z0-1085-26 Core Oci Services Practice Question

If an instance in a public subnet cannot reach the internet, what is the first thing you should check?

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

Route table rules

Route tables must have a rule directing traffic to the Internet Gateway.

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 List ingress rules

    Why it's wrong here

    Ingress rules don't affect outbound internet connectivity.

  • Route table rules

    Why this is correct

    Route tables determine if traffic is directed to the IGW.

  • Instance CPU usage

    Why it's wrong here

    CPU usage doesn't block network routing.

  • Object Storage policy

    Why it's wrong here

    Storage policies don't affect network routing.

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.