# Content Domain 5: Networking and Content Delivery
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**Topics**
+ [Task 5.1: Implement and optimize networking features and connectivity.](#sysops-administrator-associate-03-domain5-task1)
+ [Task 5.2: Configure domains, DNS services, and content delivery.](#sysops-administrator-associate-03-domain5-task2)
+ [Task 5.3: Troubleshoot network connectivity issues.](#sysops-administrator-associate-03-domain5-task3)

## Task 5.1: Implement and optimize networking features and connectivity.
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+ Skill 5.1.1: Configure a VPC (for example, subnets, route tables, network ACLs, security groups, NAT gateways, internet gateway, egress-only internet gateway).
+ Skill 5.1.2: Configure private networking connectivity (for example, VPC endpoints, AWS PrivateLink, VPC peering).
+ Skill 5.1.3: Audit AWS network protection services (for example, Route 53 Resolver DNS Firewall, AWS WAF, AWS Shield, AWS Network Firewall) in a single account.
+ Skill 5.1.4: Optimize the cost of network architectures.

## Task 5.2: Configure domains, DNS services, and content delivery.
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+ Skill 5.2.1: Configure DNS (for example, Route 53 Resolver).
+ Skill 5.2.2: Implement Route 53 routing policies, configurations, and query logging.
+ Skill 5.2.3: Configure content and service distribution (for example, CloudFront, AWS Global Accelerator).

## Task 5.3: Troubleshoot network connectivity issues.
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+ Skill 5.3.1: Troubleshoot VPC configurations (for example, subnets, route tables, network ACLs, security groups, transit gateways, NAT gateways).
+ Skill 5.3.2: Collect and interpret networking logs to troubleshoot issues (for example, VPC flow logs, ELB access logs, AWS WAF web ACL logs, CloudFront logs, container logs).
+ Skill 5.3.3: Identify and remediate CloudFront caching issues.
+ Skill 5.3.4: Identify and troubleshoot hybrid connectivity issues and private connectivity issues.
+ Skill 5.3.5: Configure and analyze CloudWatch network monitoring services.