JNCIA-Junos JN0-105 Practice Exam
Questions & Answers7
Explanation:
After increasing the MTU size of an interface and committing the configuration, the command
to verify the applied MTU change is D, "show interfaces ge-0/0/0." This command displays
detailed information about the interface, including the current MTU size, making it the best
choice for verifying the applied changes.
When considering routing policies, which two statements are correct? (Choose two.)
A. Routing policies are applied to interfaces as input or export filters.
B. An import routing policy for BGP determines which received prefix advertisements are placed
in the routing information base.
C. Policy terms are evaluated from top to bottom with action taken on the first match found.
D. Policy terms are evaluated from top to bottom with the most restrictive action taken of all
the matching terms. - ANSWERS-Answer: BC
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.)
A. The routing table is used by the RE to select the best route.
B. The forwarding table stores all routes and prefixes from all protocols.
C. The forwarding table is used by the RE to select the best route.
, D. The routing table stores all routes and prefixes from all protocols. - ANSWERS-Answer: AD
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?
A. It saves the most recently committed configuration as the rescue configuration.
B. It saves the candidate configuration as the rescue configuration.
C. It saves a configuration version prior to the configuration most recently committed as the
rescue configuration.
D. It activates the rescue configuration. - ANSWERS-Answer: A
Explanation:
The "request system configuration rescue save" command in Junos OS saves the most recently
committed configuration as the rescue configuration, making A the correct answer. This feature
allows administrators to set a known good configuration that can be quickly reverted to in case
of configuration errors or issues.
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.)
A. a static route
B. a local route
C. a dynamic route
D. a direct route - ANSWERS-Answer: BD
Explanation:
Questions & Answers7
Explanation:
After increasing the MTU size of an interface and committing the configuration, the command
to verify the applied MTU change is D, "show interfaces ge-0/0/0." This command displays
detailed information about the interface, including the current MTU size, making it the best
choice for verifying the applied changes.
When considering routing policies, which two statements are correct? (Choose two.)
A. Routing policies are applied to interfaces as input or export filters.
B. An import routing policy for BGP determines which received prefix advertisements are placed
in the routing information base.
C. Policy terms are evaluated from top to bottom with action taken on the first match found.
D. Policy terms are evaluated from top to bottom with the most restrictive action taken of all
the matching terms. - ANSWERS-Answer: BC
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.)
A. The routing table is used by the RE to select the best route.
B. The forwarding table stores all routes and prefixes from all protocols.
C. The forwarding table is used by the RE to select the best route.
, D. The routing table stores all routes and prefixes from all protocols. - ANSWERS-Answer: AD
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?
A. It saves the most recently committed configuration as the rescue configuration.
B. It saves the candidate configuration as the rescue configuration.
C. It saves a configuration version prior to the configuration most recently committed as the
rescue configuration.
D. It activates the rescue configuration. - ANSWERS-Answer: A
Explanation:
The "request system configuration rescue save" command in Junos OS saves the most recently
committed configuration as the rescue configuration, making A the correct answer. This feature
allows administrators to set a known good configuration that can be quickly reverted to in case
of configuration errors or issues.
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.)
A. a static route
B. a local route
C. a dynamic route
D. a direct route - ANSWERS-Answer: BD
Explanation:
