Remember DNS-SD
Full name: DNS-Based Service Discovery
Memory aid: DNS helps Services be Discovered.
Service discovery does not itself authorize access to the discovered service.
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
DNS-SD — DNS-Based Service Discovery
Advertises and discovers services using DNS record conventions.
Why learn DNS-SD — DNS-Based Service Discovery?
Advertises and discovers services using DNS record conventions.
Where it came from
Service discovery does not itself authorize access to the discovered service.
- Memory aid (a learning cue, not the expansion): DNS helps Services be Discovered.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand DNS-SD: DNS-Based Service Discovery.
- Recall this memory aid: DNS helps Services be Discovered.
- Explain the practical use: Advertises and discovers services using DNS record conventions.
- Explain this distinction: Service discovery does not itself authorize access to the discovered service.
- Identify DNS-SD in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 6763 (www.rfc-editor.org)