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Juniper JN0-105 Exam
Junos, Associate (JNCIA-Junos) (Page 3 )

Updated On: 12-Jan-2026
Page 3 of 26
PDF with 110 Questions

When considering routing policies, which two statements are correct? (Choose two.)

  1. Routing policies are applied to interfaces as input or export filters.
  2. An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base.
  3. Policy terms are evaluated from top to bottom with action taken on the first match found.
  4. Policy terms are evaluated from top to bottom with the most restrictive action taken of all the matching terms.

Answer(s): B,C

Explanation:

Routing policies in Junos OS are crucial for controlling route advertisements and path selection. The correct answers are B and C. An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base (RIB), and policy terms are evaluated from top to bottom, with action taken on the first match found. This sequential evaluation allows for precise control over routing decisions.



When considering routing tables and forwarding tables, which two statements are correct? (Choose two.)

  1. The routing table is used by the RE to select the best route.
  2. The forwarding table stores all routes and prefixes from all protocols.
  3. The forwarding table is used by the RE to select the best route.
  4. The routing table stores all routes and prefixes from all protocols.

Answer(s): A,D

Explanation:

The routing table and forwarding table play distinct roles in a Junos OS device. The correct answers are A and D. The routing table (A) is used by the Routing Engine (RE) to select the best route among all the learned routes, while the routing table (D) stores all routes and prefixes learned from all routing protocols. The forwarding table, in contrast, contains only the active routes chosen by the RE and is used by the Packet Forwarding Engine for actual packet forwarding.



What will the request system configuration rescue save command do?

  1. It saves the most recently committed configuration as the rescue configuration.
  2. It saves the candidate configuration as the rescue configuration.
  3. It saves a configuration version prior to the configuration most recently committed as the rescue configuration.
  4. It activates the rescue configuration.

Answer(s): A

Explanation:

The request system configuration rescue save command in Junos OS saves the most recently committed configuration as the rescue configuration. This rescue configuration can be used to recover the device if future configurations cause issues. It ensures there is a stable, known-good configuration to fall back on, which is crucial in network management and troubleshooting.


Reference:

"rescue : save configurations as the rescue: request system configuration save .................( saves the current configs as a rescue configs )" from Useful Juniper Commands.txt. Juniper official documentation: Configuring and Activating a Rescue Configuration.



An administrator configures a router's interface with an IPv4 address and subnet mask. The administrator also confirms that this interface is in an up state. In this scenario, which two route types are created on the local router? (Choose two.)

  1. a static route
  2. a local route
  3. a dynamic route
  4. a direct route

Answer(s): B,D

Explanation:

When an interface on a router is configured with an IPv4 address and is in an up state, two types of routes are automatically created in the routing table: a local route and a direct route, making B and D the correct answers. The local route represents the interface's IP address itself, indicating that the router can directly receive packets addressed to this IP. The direct route represents the subnet or network segment to which the interface is connected, indicating that the router can directly forward packets to destinations within this subnet.



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