A record
An A record is a DNS resource record that maps a domain name or hostname to an IPv4 address.
Acing the CCNA Exam: Volume 2 Advanced Networking and Security
An A record is a DNS record that maps a domain name to an IPv4 address.
- How it is used
- Maps domain names to IPv4 addresses during DNS name resolution.
- How deep it goes
- Defines the mapping and contrasts related record types without detailing A-record configuration or query processing.
- Examples
- Uses manning.com resolving to 35.166.24.88 and example.com resolving to 192.0.2.1.
- What you can do after
- Evaluate DNS records and identify whether a domain-to-IPv4 mapping is an A record.
Read how Acing the CCNA Exam: Volume 2 Advanced Networking and Security explains A record →
Road to Kubernetes
A DNS A record maps a domain name to an IPv4 address.
- How it is used
- Connects custom domain names to the static public IP exposed by a managed load balancer.
- How deep it goes
- Defines the mapping and applies it to deployment examples, but does not detail DNS propagation or record-management procedures.
- Examples
- Uses Python and Node.js custom domains pointing to a managed load balancer.
- What you can do after
- Apply it via a domain-hosting service to route custom domains to a load balancer’s static public IP.
Related concepts
- DNS recordkind of · A DNS record is a structured Domain Name System entry associating a domain name with information such as an address, service target, or administrative value.
- serviceproduced by · A Kubernetes Service is an API resource that provides stable network access and service discovery for a changing set of Pods or other specified destinations.
- headless serviceproduced by · A headless Service is a Kubernetes Service without a cluster IP that exposes its backing pod addresses directly through DNS.
- cname recordcontrasts with · A CNAME record is a DNS resource record that aliases one domain name to another canonical domain name.
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