350-401 Question #217: Real Exam Question with Answer & Explanation

Question

Which three methods does Cisco DNA Center use to discover devices? (Choose three.)

Options

• ACDP
• BSNMP
• CLLDP
• Dping
• ENETCONF
• Fa specified range of IP addresses

Explanation

Cisco DNA Center Device Discovery Methods

Cisco DNA Center discovers devices using CDP (Cisco Discovery Protocol), LLDP (Link Layer Discovery Protocol), and a specified range of IP addresses - these are the three built-in discovery methods available in the Discovery tool within DNA Center. CDP allows DNA Center to crawl the network hop-by-hop using Cisco's native neighbor discovery protocol, LLDP provides the same capability for multi-vendor environments, and IP address range scanning lets administrators define a subnet or range for DNA Center to probe systematically.

Why the distractors are wrong:

• SNMP (B) is used during the discovery process to poll device information after discovery, but it is not itself a discovery method
• Ping (D) is a reachability test tool, not a structured discovery mechanism in DNA Center
• NETCONF (E) is a network management protocol used for device configuration and telemetry, not for initial device discovery

💡 Memory Tip: Think "C-L-I" - CDP, LLDP, and IP range. These represent neighbor-based (CDP/LLDP) and address-based (IP range) discovery - two logical approaches. If you remember that SNMP is a polling tool (not a finder), you can easily eliminate that common distractor.

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