All 4 domains
16 official task statements
78–107 hrs suggested study
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Domain 01
30%
Domain 1 tests whether you can design AWS networks at scale: edge delivery with CloudFront and Global Accelerator, Route 53 DNS, load balancer selection, monitoring requirements, hybrid routing with BGP and multi-account VPC connectivity.
Inside this domain
- Design a solution that incorporates edge network services to optimize user performance and traffic management for global architectures
- Design DNS solutions that meet public, private, and hybrid requirements
- Design solutions that integrate load balancing to meet high availability, scalability, and security requirements
- Define logging and monitoring requirements across AWS and hybrid networks
- and 2 more task statements
Watch for Fast Regional failover
- Task statements
- 6
Read the domain guide →
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Domain 02
26%
Domain 2 moves from design to configuration: building Direct Connect and VPN links, wiring transit gateways across accounts and Regions, setting up hybrid DNS and automating network resources with infrastructure as code.
Inside this domain
- Implement routing and connectivity between on-premises networks and the AWS Cloud
- Implement routing and connectivity across multiple AWS accounts, Regions, and VPCs to support different connectivity patterns
- Implement complex hybrid and multi-account DNS architectures
- Automate and configure network infrastructure
Watch for VPC-to-VPC via DX gateway
- Task statements
- 4
Read the domain guide →
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Domain 03
20%
Domain 3 covers running AWS networks after launch: maintaining BGP and route tables within quotas, troubleshooting with Flow Logs and Reachability Analyzer, fixing MTU problems and tuning for throughput, availability and cost.
Inside this domain
- Maintain routing and connectivity on AWS and hybrid networks
- Monitor and analyze network traffic to troubleshoot and optimize connectivity patterns
- Optimize AWS networks for performance, reliability, and cost-effectiveness
Watch for BGP session goes idle
- Task statements
- 3
Read the domain guide →
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Domain 04
24%
Domain 4 covers protecting AWS networks: filtering inbound, outbound and inter-VPC traffic, auditing controls with logs and Firewall Manager, and keeping data confidential with TLS, IPsec, MACsec and managed certificates.
Inside this domain
- Implement and maintain network features to meet security and compliance needs and requirements
- Validate and audit security by using network monitoring and logging services
- Implement and maintain confidentiality of data and communications of the network
Watch for Encrypt Direct Connect
- Task statements
- 3
Read the domain guide →
Domain names, weights and task statements come from Amazon Web Services's official outline (ANS-C01 exam guide (current; exam retiring, last test date December 31, 2026)). Question counts and study hours are editorial planning estimates, not official figures. Last reviewed October 2026.