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350-701 Practice Question: Deploying Cisco ISE for network access control

A company is deploying Cisco ISE for network access control. They need to authenticate devices that do not support 802.1X, such as printers and IP phones. Which TWO methods can be used to authenticate these devices? (Choose two.)

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

MAB

MAB uses MAC address for authentication. Profiling can identify the device and then ISE can apply policies, but profiling alone does not authenticate; it is often combined with MAB. The question asks for authentication methods, so MAB and (if the device can be profiled and then authenticated via a policy) but typically MAB is the primary method. Another method is to use a device certificate if the device supports it, but the question says non-802.1X devices. So MAB and possibly web authentication (guest portal) for devices that can browse. However, the most common are MAB and web authentication. But from ISE perspective, for non-supplicant devices, MAB and web-auth are options. Since the question says 'authenticate', and web-auth is for guest, I'll include MAB and device registration (which is not standard). Better: MAB and local database authentication via web portal. However, to be precise, the two methods are MAB and authentication using a local or AD account via a web portal (for devices that can do HTTP). But the options: A) 802.1X (not supported), B) MAB, C) Profiling, D) Guest portal, E) Device registration. The correct two: MAB and Guest portal (since guest portal can provide authentication for non-supplicant devices).

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • 802.1X

    Why it's wrong here

    802.1X is not supported on these devices.

  • MAB

    Why this is correct

    Correct. MAB uses MAC address for authentication.

  • Profiling

    Why it's wrong here

    Profiling identifies device type but does not authenticate.

  • Guest portal (web authentication)

    Why this is correct

    Correct. Guest portal can authenticate devices via a web page.

  • Device registration via posture agent

    Why it's wrong here

    Posture agent requires 802.1X.

Quick reference

AAA Protocol Comparison

ProtocolPort(s)EncryptionTransportPrimary Use
RADIUS1812 / 1813Password onlyUDPNetwork access control
TACACS+49Full packetTCPDevice administration
Diameter3868Full sessionTCP / SCTPCarrier / mobile networks
802.1XEAP-basedLayer 2Port-based access control

TACACS+ encrypts the entire packet; RADIUS only encrypts the password field — a key exam distinction.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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