hardMultiple SelectObjective-mapped
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
| Protocol | Port(s) | Encryption | Transport | Primary Use |
|---|---|---|---|---|
| RADIUS | 1812 / 1813 | Password only | UDP | Network access control |
| TACACS+ | 49 | Full packet | TCP | Device administration |
| Diameter | 3868 | Full session | TCP / SCTP | Carrier / mobile networks |
| 802.1X | — | EAP-based | Layer 2 | Port-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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