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Exam 200-310 topic 2 question 120 discussion

Actual exam question from Cisco's 200-310
Question #: 120
Topic #: 2
[All 200-310 Questions]

Which of the following WLC interfaces is used for Layer 2 discovery?

  • A. the management interface
  • B. the service port interface
  • C. the AP manager interface
  • D. the dynamic interface
  • E. the virtual interface
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Suggested Answer: A 🗳️
Section: Considerations for Expanding an Existing Network Explanation

The management interface on a Cisco wireless LAN controller (WLC) is used for Layer 2 discovery. A WLC interface is a logical interface that can be mapped to at least one physical port. The port mapping is typically implemented as a virtual LAN (VLAN) on an 802.1Q trunk. A WLC has five interface types:
✑ Management interface
✑ Service port interface
✑ Access point (AP) manager interface
✑ Dynamic interface
✑ Virtual interface
The management interface is used for in-band management, for Layer 2 discovery operations, and for enterprise services such as authentication, authorization, and accounting (AAA). The service port interface is statically mapped to the service port on the WLC and is used for out-of-band management. The AP manager interface is used for Layer 3 discovery operations and handles all Layer 3 communications between the WLC and an associated AP.
The virtual interface is a special interface used to support wireless client mobility. The virtual interface acts as a Dynamic Host Configuration Protocol (DHCP) server placeholder and supports DHCP relay functionality. In addition, the virtual interface is used to implement Layer 3 security, such as redirects for a web authentication login page.
The dynamic interface type is used to map VLANs on the WLC for wireless client data transfer. A WLC can support up to 512 dynamic interfaces mapped onto an
802.1Q trunk on a physical port or onto multiple ports configured as a single port group using link aggregation (LAG).
Reference:
Cisco: Cisco Wireless LAN Controller Configuration Guide, Release 7.4: Information About Interfaces
by [deleted] at April 3, 2025, 1:55 a.m.

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