Question 768 of 1,740
Configuration Management and IaCeasyMultiple SelectObjective-mapped

DOP-C02 Configuration Management and IaC Practice Question

This DOP-C02 practice question tests your understanding of configuration management and iac. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A company uses AWS CloudFormation to deploy a VPC with public and private subnets. They want to ensure that the VPC has internet access for the public subnets. Which THREE resources must be included in the template?

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

AWS::EC2::Route (pointing to InternetGateway)

Option A is correct because an internet gateway is required for internet access. Option B is correct because a route table is needed to route traffic. Option D is correct because a route to the internet gateway must be added to the route table. Option C is wrong because a NAT gateway is for private subnets. Option E is wrong because a VPC endpoint is for private connectivity to AWS services.

Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.

Answer analysis

Option-by-option breakdown

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

  • AWS::EC2::VPCEndpoint

    Why it's wrong here

    Not for internet access.

  • AWS::EC2::Route (pointing to InternetGateway)

    Why this is correct

    Directs traffic to internet.

    Related concept

    CIDR notation defines the prefix length.

  • AWS::EC2::RouteTable

    Why this is correct

    Routes traffic.

    Related concept

    CIDR notation defines the prefix length.

  • AWS::EC2::NatGateway

    Why it's wrong here

    For private subnets, not public.

  • AWS::EC2::InternetGateway

    Why this is correct

    Provides internet connectivity.

    Related concept

    CIDR notation defines the prefix length.

Common exam traps

Common exam trap: usable hosts are not the same as total addresses

Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.

Detailed technical explanation

How to think about this question

Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.

KKey Concepts to Remember

  • CIDR notation defines the prefix length.
  • Block size helps identify subnet boundaries.
  • Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
  • The required host count determines the smallest suitable subnet.

TExam Day Tips

  • Write the block size before choosing the subnet.
  • Check whether the question asks for hosts, subnets or a specific address range.
  • Do not confuse /24, /25, /26 and /27 host counts.

Key takeaway

Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.

Real-world example

How this comes up in practice

A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

What to study next

Got this wrong? Here's your next step.

Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related DOP-C02 subnetting questions on CIDR, address ranges, and subnet selection.

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FAQ

Questions learners often ask

What does this DOP-C02 question test?

Configuration Management and IaC — This question tests Configuration Management and IaC — CIDR notation defines the prefix length..

What is the correct answer to this question?

The correct answer is: AWS::EC2::Route (pointing to InternetGateway) — Option A is correct because an internet gateway is required for internet access. Option B is correct because a route table is needed to route traffic. Option D is correct because a route to the internet gateway must be added to the route table. Option C is wrong because a NAT gateway is for private subnets. Option E is wrong because a VPC endpoint is for private connectivity to AWS services.

What should I do if I get this DOP-C02 question wrong?

Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related DOP-C02 subnetting questions on CIDR, address ranges, and subnet selection.

What is the key concept behind this question?

CIDR notation defines the prefix length.

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Last reviewed: Jun 20, 2026

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This DOP-C02 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 DOP-C02 exam.