hardMultiple ChoiceObjective-mapped
200-901 Practice Question: Is configuring a Cisco switch to support LLDP-MED…
A network engineer is configuring a Cisco switch to support LLDP-MED for VoIP phones. Which command is required to enable LLDP globally on the switch?
⚠ Common exam trap
Cisco often tests the distinction between global and interface-level LLDP commands, and the trap here is that candidates confuse 'lldp run' (global enable) with 'lldp enable' (a nonexistent command) or assume that 'lldp transmit' alone is sufficient to start LLDP.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
lldp run
The command 'lldp run' is required to enable LLDP globally on a Cisco switch. LLDP is disabled by default on most Cisco switches, and 'lldp run' activates the protocol at the global configuration level, allowing LLDP-MED (which extends LLDP for VoIP and other endpoint devices) to function. Without this global enablement, LLDP frames are not transmitted or received, even if per-interface commands like 'lldp transmit' or 'lldp receive' are configured.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
lldp transmit
Why it's wrong here
This command is for interface-level configuration.
- ✗
cdp run
Why it's wrong here
CDP is a different protocol.
- ✓
lldp run
Why this is correct
This enables LLDP globally on Cisco IOS switches.
- ✗
lldp enable
Why it's wrong here
This is not the correct Cisco command; 'lldp run' is used globally.
- ✗
lldp med
Why it's wrong here
This enables LLDP-MED but after LLDP is globally enabled.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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