JNCIA-Cloud: Juniper Networks Certified Associate – Cloud (2021) — Question 7

Which two protocols provide loop prevention in an underlay network? (Choose two.)

Answer options

• A. OSPF
• B. VPLS
• C. EVPN
• D. MSTP

Correct answer: A, D

Explanation

OSPF (Open Shortest Path First) and MSTP (Multiple Spanning Tree Protocol) are both designed to prevent loops in network routing and switching. While VPLS (Virtual Private LAN Service) and EVPN (Ethernet Virtual Private Network) focus on providing Layer 2 connectivity and do not inherently prevent loops, OSPF and MSTP specifically address loop prevention in their respective domains.