Juniper JN0-351 Exam Practice Questions (P. 1)
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Question #1

Referring to the exhibit, which router will become the OSPF BDR if all routers are powered on at the same time?
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Question #2

What is the management IP address of the device shown in the exhibit?
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Question #3
Which three protocols support BFD? (Choose three.)
- ARSTP
- BBGP
- COSPF
- DLACP
- EFTP
Correct Answer:
BCD
BCD

BFD (Bidirectional Forwarding Detection) supports fast failure detection times for various protocols like BGP and OSPF, which are crucial for maintaining resilient network operations. Furthermore, BFD can be integrated with LACP (Link Aggregation Control Protocol) to improve the convergence times for link aggregation, adding another layer of fault tolerance. This integration indeed applies even though LACP is primarily an aggregation protocol and not a routing protocol. Thus, BGP, OSPF, and LACP are supported protocols for BFD.
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Question #4
Which statement is correct about graceful Routing Engine switchover (GRES)?
- AThe PFE restarts and the kernel and interface information is lost.
- BGRES has a helper mode and are starting mode.
- CWhen combined with NSR, routing is preserved and the new master RE does not restart rpd.Most Voted
- DWith no other high availability features enabled, routing is preserved and the new master RE does not restart rpd.
Correct Answer:
C
C

Graceful Routing Engine Switchover (GRES) when used by itself does not preserve control plane stability. However, when paired with Nonstop Routing (NSR), it does indeed maintain continuous routing operations. This synergy prevents the new master Routing Engine from needing to restart the Routing Protocol Daemon (RPD), thereby ensuring minimal disruption in network stability and routing continuity.
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Question #5
Which statement is correct about controlling the routes installed by a RIB group?
- AAn import policy is applied to the RIB group.Most Voted
- BOnly routes in the last table are installed
- CA firewall filter must be configured to install routes in the RIB groups.
- DAn export policy is applied to the RIB group.
Correct Answer:
A
A

Absolutely, option A nails it. When setting up RIB groups, using an import policy is your go-to move to manage which routes make the cut for installation. This choice lets you filter and select routes from different sources, like from static setups or various routing protocols, ensuring only the routes you need are processed. It's a straightforward, effective way to keep your routing organized and efficient.
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