350-801 Question #291: Real Exam Question with Answer & Explanation

Question

The IP phones at a customer site do not pick an IP address from the DHCP. An engineer must temporarily disable LLDP on all ports of the switch to leave only CDP. Which two commands accomplish this task? (Choose two.)

Options

• ASwitch(config)# no lldp transmit
• BSwitch# configure terminal
• CSwitch# copy running-config startup-config
• DSwitch(config)# no lldp run
• ESwitch(config)# interface GigabitEthernet1/0/1

Explanation

To temporarily disable LLDP globally on a Cisco switch and ensure only CDP is active, the engineer must enter global configuration mode and then execute the command to turn off LLDP runtime operations.

Common mistakes.

• A. The no lldp transmit command disables LLDP transmission only on a specific interface, not globally across the switch.
• C. The copy running-config startup-config command saves the current active configuration, but it does not directly disable LLDP.
• E. The interface GigabitEthernet1/0/1 command enters interface-specific configuration mode, which is not the global configuration context needed to disable LLDP entirely.

Concept tested. Disabling LLDP globally on Cisco IOS switches

Reference. https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/lldp/configuration_guide/b_lldp_3se_3850_cg/b_lldp_3se_3850_cg_chapter_01.html#concept_E7764A96DD8C4AF7A49444ED3D1A5626

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