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350-401 · Question #843

Which character formatting is required for DHCP Option 43 to function with current AP models?

The correct answer is D. Hex. For DHCP Option 43 to function correctly with modern Access Point (AP) models, the information must be formatted using hexadecimal characters.

Submitted by saadiq_pk· Mar 6, 2026

Question

Which character formatting is required for DHCP Option 43 to function with current AP models?

Options

  • AMD5
  • BBase64
  • CASCII
  • DHex

How the community answered

(48 responses)
  • B
    2% (1)
  • C
    4% (2)
  • D
    94% (45)

Why each option

For DHCP Option 43 to function correctly with modern Access Point (AP) models, the information must be formatted using hexadecimal characters.

AMD5

MD5 is a hashing algorithm and not a character formatting for data transmission in DHCP Option 43.

BBase64

Base64 is an encoding scheme but is not the required format for DHCP Option 43 with Cisco APs.

CASCII

ASCII represents characters directly, but DHCP Option 43 for Cisco APs specifically requires hexadecimal encoding for the WLC IP address or other vendor-specific information.

DHexCorrect

DHCP Option 43 is a vendor-specific option used by Cisco APs to discover Wireless LAN Controllers (WLCs). Current AP models expect the WLC IP addresses or hostname to be provided in a hexadecimal string format within Option 43.

Concept tested: DHCP Option 43 hexadecimal encoding

Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/lwap/b_lwap_74_cg/b_lwap_74_cg_chapter_01000.html

Topics

#DHCP Option 43#Wireless APs#DHCP configuration#Data formatting

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