Remember CNAME
Full name: Canonical Name record
Memory aid: Canonical NAME is the destination behind an alias.
A CNAME has coexistence constraints with other record types at the same owner name.
Study area: Protocols & logical ports · Batch 7
Relevant study for: CompTIA Network+ N10-009 · Cisco CCNA 200-301 · CompTIA A+ Core 1 220-1201 · CompTIA Security+ SY0-701 · ISC2 CISSP 2024 outline
Practice with exam flashcards →Networking & Connectivity / Knowledge library
CNAME — Canonical Name record
Aliases one DNS name to another canonical name.
Why learn CNAME — Canonical Name record?
Aliases one DNS name to another canonical name.
Where it came from
A CNAME has coexistence constraints with other record types at the same owner name.
- Memory aid (a learning cue, not the expansion): Canonical NAME is the destination behind an alias.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand CNAME: Canonical Name record.
- Recall this memory aid: Canonical NAME is the destination behind an alias.
- Explain the practical use: Aliases one DNS name to another canonical name.
- Explain this distinction: A CNAME has coexistence constraints with other record types at the same owner name.
- Identify CNAME in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 1035 (www.rfc-editor.org)