CLF-C02 Cloud Technology and Services Practice Question
Which AWS service is used to register domain names and route DNS queries for domain names like 'example.com'?
⚠ Common exam trap
Candidates often confuse AWS Global Accelerator with a DNS service because both use anycast and improve performance, but Global Accelerator does not handle domain registration or standard DNS query resolution.
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
✓
Amazon Route 53
Amazon Route 53 is a scalable Domain Name System (DNS) web service that provides both domain name registration and DNS resolution. It translates human-readable domain names like 'example.com' into IP addresses and can also register new domains or transfer existing ones. This dual functionality makes it the correct choice for the question.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon CloudFront
Why it's wrong here
Amazon CloudFront is a global content delivery network that caches and delivers files from edge locations to reduce latency for end users. It supports custom domain names via alternate domain names, but those names must be configured through DNS and backed by an authoritative DNS service; CloudFront itself is not a DNS provider or domain registrar. Its role is to accelerate content at Layer 7 (HTTP/HTTPS), not to resolve or route domain-query traffic.
- ✗
AWS Global Accelerator
Why it's wrong here
AWS Global Accelerator assigns static anycast IP addresses and forwards traffic over the AWS global network to the optimal endpoint, improving connection reliability and performance for UDP/TCP applications. It operates at Layer 4 and relies on DNS to resolve your domain to its static IPs; it does not register domains and does not provide authoritative DNS hosting or domain name management. It is a traffic acceleration service, not a DNS or domain service.
- ✓
Amazon Route 53
Why this is correct
Amazon Route 53 combines domain registration, authoritative DNS hosting, and health checking into a single managed service. It supports alias resource record sets that let you point a domain directly to AWS resources such as an Application Load Balancer or an S3 website endpoint without exposing an IP address. It also offers routing policies like latency-based, geolocation, weighted, and failover to control global traffic.
- ✗
AWS Certificate Manager
Why it's wrong here
AWS Certificate Manager issues and automatically renews public and private SSL/TLS certificates to encrypt traffic in transit. It integrates with services like Elastic Load Balancing, CloudFront, and API Gateway, but it never performs domain registration and has no role in DNS resolution or hosting authoritative nameservers. You still must create DNS records, typically in Route 53, to prove domain ownership and route traffic to the protected endpoints.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CLF-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 CLF-C02 exam.