An interface on your Junos device reports a device-level flag of Loopback-detected.
What is causing this flag to be reported?
A. The link-layer protocol failed to successfully connect with the remote endpoint.
B. The interface was administratively disabled.
C. The interface is in promiscuous mode and sees frames addressed to all physical addresses on the medium.
D. The interface link layer received its own frames.
Two neighboring routers running OSPF were configured with the same router ID by mistake.
Which OSPF operational mode command would report the number of hello packets received with the local router’s router ID?
A. show ospf route
B. show ospf log
C. show ospf statistics
D. show ospf io-statistics
Which two statements are correct about the show ospf route and the show route protocols ospf commands? (Choose two.)
A. show ospf route displays the entries in the Open Shortest Path First (OSPF) routing table.
B. show route protocols ospf displays the route entries in the routing table that were learned through OSPF.
C. show ospf route displays the route entries in the routing table that were learned through OSPF.
D. show route protocols ospf displays the entries in the Open Shortest Path First (OSPF) routing table.
Which two tools would be used to troubleshoot BGP peering problems? (Choose two.)
B. the monitor traffic interface command
C. the inet.3 routing table
D. the link-state database
Which command would be helpful in determining the time at which the protocols started?
A. show route
B. show chassis hardware
C. show configuration
D. show system uptime
Which three statements are correct about rpd related troubleshooting on devices running the Junos OS? (Choose three.)
A. A log for rpd scheduler slip is an indication of something that should be investigated and resolved.
B. A log for rpd scheduler slip is a common, harmless syslog and can be ignored.
C. A possible cause for an overworked rpd is excessive protocol tracing.
D. A possible method to troubleshoot rpd scheduler slips is to temporarily enable task accounting.
E. Excessive protocol tracing can never be a cause for an overworked rpd.
You suspect that your router is missing the .0/24 routes for your local network. You first want to look for the routes on the control plane before troubleshooting the data plane.
Which operational mode command should you issue?
A. show route forwarding-table
B. show route flow validation table
C. show route
D. show arp
An OSPF neighbor is stuck in the Exchange state.
Which condition would cause this to happen?
A. a mismatched area
B. mismatched authentication
C. a mismatched IP subnet
D. a mismatched MTU
A customer operates a multi-vendor production network. They report that LSAs are aging out on Junos devices. Which OSPF parameter must be tuned to prevent this behavior?
A. LSA refresh interval
B. hello interval
C. dead interval
D. LSA retransmission interval
You have configured graceful Routing Engine switchover (GRES) on your device running the Junos OS. Which command would you run to ensure that GRES is functioning properly?
A. Issue the show system switchover command from the master Routing Engine.
B. Issue the show system switchover command from the backup Routing Engine.
C. Issue the show chassis routing-engine command from the backup Routing Engine.
D. Issue the show chassis routing-engine command from the master Routing Engine.
…go to http://www.lead2pass.com/JN0-690.html to download the full version Q&As.
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