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Red Hat Certified System Administrator EX200 (RHEL 10) · Domain 8: Manage basic networking

Configuring hostname resolution: hostnamectl, /etc/hosts, ipv4.dns and /etc/resolv.conf

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Last reviewed September 25, 2026 · Leer en español

Two related jobs fall under this objective: giving the machine its own name, and making it able to turn names into addresses. Both are routine exam tasks, and a system that cannot resolve names will make later tasks such as NFS mounts, time sync and repositories fail.

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