ANS-C01 Network Management and Operations Practice Question
A company has a VPC with public and private subnets. They want to allow instances in the private subnet to download software updates from the internet while blocking inbound internet traffic. Which TWO components are required? (Select 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
✓
A NAT Gateway in a public subnet.
To allow instances in a private subnet to download updates from the internet (outbound only), a NAT Gateway in a public subnet (D) is required, along with a route in the private subnet's route table pointing 0.0.0.0/0 to the NAT Gateway (E). An Internet Gateway (B) alone would allow inbound traffic, which is not desired, and it is not used for private subnets. A Virtual Private Gateway (A) is for VPN connections to on-premises, not for internet access. VPC Peering (C) connects VPCs, not to the internet.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A Virtual Private Gateway.
Why it's wrong here
Virtual Private Gateway is for VPN connections.
- ✗
An Internet Gateway attached to the VPC.
Why it's wrong here
Internet Gateway is for public subnets, not private.
- ✗
A VPC Peering connection.
Why it's wrong here
Peering connects VPCs, not to the internet.
- ✓
A NAT Gateway in a public subnet.
Why this is correct
NAT Gateway enables outbound internet access.
- ✓
A route in the private subnet's route table pointing to the NAT Gateway.
Why this is correct
Route directs internet traffic to NAT Gateway.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-C01 practice question is part of Courseiva's free Amazon Web Services 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 ANS-C01 exam.