Remember SD-WAN
Full name: Software-Defined Wide Area Network
Memory aid: Software Decides which Wide-Area road to use.
Underlay connectivity, routing, and security still matter.
Study area: Network architecture & switching · Batch 2
Relevant study for: CompTIA Network+ N10-009 · Cisco CCNA 200-301 · CompTIA Security+ SY0-701 · ISC2 CISSP 2024 outline
Practice with exam flashcards →Networking & Connectivity / Knowledge library
SD-WAN — Software-Defined Wide Area Network
Applies policy-driven control across WAN connectivity.
Why learn SD-WAN — Software-Defined Wide Area Network?
Applies policy-driven control across WAN connectivity.
Where it came from
Underlay connectivity, routing, and security still matter.
- Memory aid (a learning cue, not the expansion): Software Decides which Wide-Area road to use.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand SD-WAN: Software-Defined Wide Area Network.
- Recall this memory aid: Software Decides which Wide-Area road to use.
- Explain the practical use: Applies policy-driven control across WAN connectivity.
- Explain this distinction: Underlay connectivity, routing, and security still matter.
- Identify SD-WAN in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IEEE 802 LAN/MAN standards (www.ieee802.org)
- IETF Internet standards (www.rfc-editor.org)