Remember MSS
Full name: Maximum Segment Size
Memory aid: Maximum Segment carries TCP data without its headers.
MSS is different from a link's MTU.
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
MSS — Maximum Segment Size
Limits TCP payload size advertised for a connection direction.
Why learn MSS — Maximum Segment Size?
Limits TCP payload size advertised for a connection direction.
Where it came from
MSS is different from a link's MTU.
- Memory aid (a learning cue, not the expansion): Maximum Segment carries TCP data without its headers.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand MSS: Maximum Segment Size.
- Recall this memory aid: Maximum Segment carries TCP data without its headers.
- Explain the practical use: Limits TCP payload size advertised for a connection direction.
- Explain this distinction: MSS is different from a link's MTU.
- Identify MSS in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 9293 (www.rfc-editor.org)