A service provider is upgrading the software on a pair of MX routers that run a BGP-free core with MPLS LSPs. The routers are configured with GRES and NSR. The engineer wants to perform the upgrade with minimal disruption to traffic. Which action should be taken before starting the upgrade?

Disable GRES and NSR to avoid state synchronization issues during the upgrade.

Remove all BGP sessions from the configuration to prevent route flapping during the upgrade.

Verify that both Routing Engines are synchronized and that the backup RE is in the standby state.

Reboot both Routing Engines simultaneously to ensure they run the same software version.

Which Junos feature synchronizes routing protocol state from the active Routing Engine to the backup Routing Engine, allowing routing protocols to continue operating without interruption during a switchover?

Graceful Routing Engine Switchover (GRES)

Unified In-Service Software Upgrade (ISSU)

When troubleshooting a Unified In-Service Software Upgrade (ISSU) failure, which Junos CLI command would you use to check the status of the upgrade process and identify any errors?

request system software in-service-upgrade status

Juniper NetworksCertified Specialist, Enterprise Routing and Switching (JNCIS-ENT)

Domain 9Objective 6

Configuration and Troubleshooting JN0-352 Practice Questions (Page 1)

Part of the High Availability domain, which makes up ~12% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–7 in this domain), expect 1–1 from this objective — we provide 10 practice questions to prepare you well beyond it. (estimate)

10questions here

2free pages

3concepts

Questions 1–5

1foundation · easy
Which Junos CLI command displays the current state of Graceful Routing Engine Switchover (GRES) and Nonstop Active Routing (NSR) on a device?
Select an answer first
2application · medium
A network administrator is configuring a pair of MX routers for high availability. The requirement is to maintain BGP sessions during a Routing Engine failover. Which configuration is required?
Select an answer first
3application · medium
A service provider is upgrading the software on a pair of MX routers that run a BGP-free core with MPLS LSPs. The routers are configured with GRES and NSR. The engineer wants to perform the upgrade with minimal disruption to traffic. Which action should be taken before starting the upgrade?
Select an answer first
4foundation · easy
Which Junos feature synchronizes routing protocol state from the active Routing Engine to the backup Routing Engine, allowing routing protocols to continue operating without interruption during a switchover?
Select an answer first
5foundation · easy
When troubleshooting a Unified In-Service Software Upgrade (ISSU) failure, which Junos CLI command would you use to check the status of the upgrade process and identify any errors?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to JN0-352

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Juniper Networks. “JN0-352” is a trademark of its owner, used for identification only.

Configuration and Troubleshooting JN0-352 Practice Questions (Page 1)

Questions 1–5

Which Junos CLI command displays the current state of Graceful Routing Engine Switchover (GRES) and Nonstop Active Routing (NSR) on a device?

A network administrator is configuring a pair of MX routers for high availability. The requirement is to maintain BGP sessions during a Routing Engine failover. Which configuration is required?

A service provider is upgrading the software on a pair of MX routers that run a BGP-free core with MPLS LSPs. The routers are configured with GRES and NSR. The engineer wants to perform the upgrade with minimal disruption to traffic. Which action should be taken before starting the upgrade?

Which Junos feature synchronizes routing protocol state from the active Routing Engine to the backup Routing Engine, allowing routing protocols to continue operating without interruption during a switchover?

When troubleshooting a Unified In-Service Software Upgrade (ISSU) failure, which Junos CLI command would you use to check the status of the upgrade process and identify any errors?

Keep studying — High Availability