Remember mDNS
Full name: Multicast DNS
Memory aid: Multicast lets nearby devices answer DNS questions.
mDNS discovery is local-link behavior, not a replacement for enterprise DNS delegation.
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
mDNS — Multicast DNS
Resolves names on a local link using multicast queries.
Why learn mDNS — Multicast DNS?
Resolves names on a local link using multicast queries.
Where it came from
mDNS discovery is local-link behavior, not a replacement for enterprise DNS delegation.
- Memory aid (a learning cue, not the expansion): Multicast lets nearby devices answer DNS questions.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand mDNS: Multicast DNS.
- Recall this memory aid: Multicast lets nearby devices answer DNS questions.
- Explain the practical use: Resolves names on a local link using multicast queries.
- Explain this distinction: mDNS discovery is local-link behavior, not a replacement for enterprise DNS delegation.
- Identify mDNS in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 6762 (www.rfc-editor.org)