Junos Software Architecture JN0-105 Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A network administrator is troubleshooting a performance issue on a Junos router. They notice that the PFE is dropping packets. Which action is most likely to help resolve the issue?

   • ARestarting the routing protocol process (rpd)
   • BChecking the forwarding table for correct routes
   • CChecking for interface errors or congestion
   • DRebooting the router
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   What is the primary function of the Packet Forwarding Engine (PFE) in a Junos device?

   • AManaging the routing table.
   • BProcessing and forwarding packets.
   • CRunning routing protocols like OSPF.
   • DStoring the device configuration.
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   What is a key benefit of the modular architecture of Junos OS?

   • AIt allows the device to run both Junos and third-party operating systems simultaneously.
   • BIt eliminates the need for a separate routing table and forwarding table.
   • CA failure in one process does not necessarily disrupt the entire system.
   • DIt requires all processes to share a single memory space for efficiency.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   Which statement correctly describes the Packet Forwarding Engine (PFE)?

   • AIt manages the routing table and routing protocols.
   • BIt provides the CLI for user management.
   • CIt runs the Junos kernel and user-space processes.
   • DIt is responsible for packet forwarding and filtering.
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which action is performed by the forwarding plane in Junos OS?

   • AEstablishing BGP peering sessions.
   • BCalculating the best path to a destination network.
   • CApplying a firewall filter to packets.
   • DStoring the routing table in memory.
   Reveal Solution Discussion Select an answer first