Networking
Domain Name System
The Domain Name System maps domain names to records such as IP addresses and service information. CI jobs use DNS to locate repositories, package registries, and APIs; successful resolution alone does not guarantee network reachability.
Also known as: DNS
Why it matters
Name-resolution failures can prevent builds from reaching otherwise healthy dependency services.
Practical example
Check DNS resolution separately from TLS and firewall access when a dependency download fails.
Related terms
Sources
Definition reviewed .
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