Which activity is performed by the Packet Forwarding Engine?

Storing the routing table and calculating best paths

Processing routing protocol updates from neighbors

Serving as the primary interface for user login

Applying class-of-service (CoS) markings to outgoing packets

A network administrator is monitoring traffic on a Junos router and notices that packets are being forwarded at line rate. Which component is responsible for this high-speed forwarding?

The routing protocol process (rpd)

The Packet Forwarding Engine's dedicated hardware

A network administrator is configuring a new static route on a Junos router. After committing the configuration, the administrator wants to ensure that the Packet Forwarding Engine is using the new route. What is the most immediate action the administrator should take?

Manually add the route to the PFE using the 'request pfe add route' command.

Verify the route in the forwarding table using 'show route forwarding-table'.

Reboot the router to force the PFE to reload the forwarding table.

Wait for the next OSPF update to propagate the route to the PFE.

A network administrator is troubleshooting a scenario where the Routing Engine is receiving BGP routes, but the Packet Forwarding Engine is not forwarding traffic to those destinations. Which step should the administrator take first?

Reboot the router to force the PFE to reload the forwarding table.

Check the BGP configuration on the Routing Engine.

Check the forwarding table on the PFE to see if the routes are installed.

Verify that the PFE is running the BGP protocol.

A network administrator is configuring a firewall filter on a Junos router. The filter is intended to drop certain traffic. Where should the administrator apply the filter to ensure it is processed by the Packet Forwarding Engine?

On the routing protocol process (rpd)

On the Routing Engine's loopback interface

On the ingress or egress interface of the PFE

Juniper NetworksCertified Associate, Junos

Domain 2Objective 3

Routing Engine and Packet Forwarding Engine JN0-105 Practice Questions (Page 1)

Part of the Junos OS Fundamentals domain, which makes up ~14% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–8 in this domain), expect 1–2 from this objective — we provide 18 practice questions to prepare you well beyond it. (estimate)

18questions here

4free pages

4concepts

Questions 1–5

1foundation · easy
Which activity is performed by the Packet Forwarding Engine?
Select an answer first
2application · easy
A network administrator is monitoring traffic on a Junos router and notices that packets are being forwarded at line rate. Which component is responsible for this high-speed forwarding?
Select an answer first
3application · medium
A network administrator is configuring a new static route on a Junos router. After committing the configuration, the administrator wants to ensure that the Packet Forwarding Engine is using the new route. What is the most immediate action the administrator should take?
Select an answer first
4expert · medium
A network administrator is troubleshooting a scenario where the Routing Engine is receiving BGP routes, but the Packet Forwarding Engine is not forwarding traffic to those destinations. Which step should the administrator take first?
Select an answer first
5application · medium
A network administrator is configuring a firewall filter on a Junos router. The filter is intended to drop certain traffic. Where should the administrator apply the filter to ensure it is processed by the Packet Forwarding Engine?
Select an answer first

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