JNCIA-Cloud: Juniper Networks Certified Associate – Cloud (2021) — Question 27

You are deploying a Layer 2 underlay network with 2,000 devices and hosts.
Which two statements are correct? (Choose two.)

Answer options

• A. The MAC tables can become very large and unmanageable.
• B. RPF is used for loop prevention.
• C. Network routing tables can become very large and unmanageable.
• D. RSTP can be used for loop prevention.

Correct answer: A, D

Explanation

Option A is correct because a large number of devices leads to extensive MAC address entries, making management challenging. Option D is correct as RSTP (Rapid Spanning Tree Protocol) is specifically designed to prevent loops in Layer 2 networks. Options B and C are incorrect; RPF (Reverse Path Forwarding) is related to multicast routing and not directly for loop prevention in Layer 2, and while routing tables may grow, the focus here is on MAC tables.