JNCIP-ENT Layer 2 Authentication And Access Control Practice Question

Which TWO options are valid configurable parameters under an access profile in Junos OS? (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

✓

radius-server-group

Access profiles contain RADIUS server groups, accounting parameters, and authentication order settings.

Answer analysis

Option-by-option breakdown

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

✓
radius-server-group
Why this is correct
Correct. Radius server groups are defined under access profiles.
✗
virtual-router-instance
Why it's wrong here
Incorrect. Routing instances are configured under the routing-instances hierarchy.
✗
ethernet-switching-options
Why it's wrong here
Incorrect. Ethernet switching options belong to system/interface hierarchies.
✗
storm-control
Why it's wrong here
Incorrect. Storm control is configured under interfaces or switching-options.
✓
accounting
Why this is correct
Correct. Accounting is configured within access profiles.

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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One of 332 original JNCIP-ENT practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →

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Written and reviewed by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint

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