350-701 Practice Question: Secure Network Access, Visibility and Enforcement
Which TWO of the following are authentication methods used for wired network access in Cisco ISE?
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
✓
802.1X
Options D and E are correct because 802.1X and MAC Authentication Bypass (MAB) are the primary authentication methods used for wired network access in Cisco ISE. Option A (TACACS+) is used for device administration, not network access. Option B (NetFlow) is a network monitoring tool. Option C (RADIUS) is a protocol that underpins authentication methods but is not itself an authentication method.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
TACACS+
Why it's wrong here
TACACS+ is used for device administration, not network access.
- ✗
NetFlow
Why it's wrong here
NetFlow is used for traffic monitoring and analysis.
- ✗
RADIUS
Why it's wrong here
RADIUS is the protocol used to transport authentication, not a method.
- ✓
802.1X
Why this is correct
802.1X is a standard authentication method for wired and wireless.
- ✓
MAC Authentication Bypass (MAB)
Why this is correct
MAB uses the device MAC address for authentication.
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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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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