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mediumDrag & DropObjective-mapped
350-401 Practice Question: Drag and drop the steps of IBNS 2.0 concurrent…
Drag and drop the steps of IBNS 2.0 concurrent authentication policy map into the correct order, from first to last.
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
✓
Switch initiates 802.1X authentication
IBNS 2.0 uses a policy map that first triggers 802.1X, then if that fails, concurrently tries MAB and web authentication, evaluates the first successful method, and finally applies the corresponding authorization result.
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.
Go deeper
Related to this question
Learn chapter
IP Services: DHCP, NAT, and DNS
Key term
Cisco TrustSec
Cisco TrustSec is a security architecture that uses identity-based access control and encryption to protect network traffic, rather than relying only on IP addresses and VLANs.
Key term
Cisco ISE
Cisco Identity Services Engine is a security policy management platform that controls who can access a network and what they can do once connected.
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Same concept, more angles
1 more way this is tested on 350-401
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Drag and drop the steps of IBNS 2.0 concurrent authentication policy map into the correct order, from first to last.
medium- ✓ A.Switch initiates 802.1X authentication
- ✓ B.802.1X times out after no EAP response
- ✓ C.Switch attempts MAB using source MAC
- ✓ D.MAB fails due to unknown MAC address
- ✓ E.Switch applies critical/default ACL to port
Why A: IBNS 2.0 uses a policy map to define concurrent methods; the switch first tries 802.1X, then MAB as fallback, and if both fail, applies a critical or default ACL; the order is defined in the policy map class.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.