Match each Layer 2 discovery protocol standard, default operational timer, or feature extension on the left with its correct specification on the right.
- IEEE 802.1ABVendor-neutral open standard specification defining Link Layer Discovery Protocol
- CDP Default Holdtime180 seconds
- LLDP Default Advertisement Timer30 seconds
- LLDP-MEDExtension supporting inventory management, power-over-Ethernet (PoE) negotiation, and network policy discovery for IP endpoints
Cevap
IEEE 802.1AB matches the vendor-neutral open standard specification defining Link Layer Discovery Protocol. CDP Default Holdtime matches 180 seconds. LLDP Default Advertisement Timer matches 30 seconds. LLDP-MED matches the extension supporting inventory management, power-over-Ethernet (PoE) negotiation, and network policy discovery for IP endpoints.
Each pair correctly matches the protocol standard, operational timers, and functional extensions: IEEE 802.1AB defines open-standard LLDP, CDP uses a 180-second default holdtime (3x its 60-second update timer), LLDP sends frames every 30 seconds by default, and LLDP-MED adds organizationally specific Type-Length-Values (TLVs) for media endpoints such as IP phones.
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Anahtar Kavram
Layer 2 Discovery Protocols (CDP and LLDP) operational specifications and standards