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JN0-103 by Juniper - Page 1 | ExamCademy

Mode Selection

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Question 3

A packet enters a Junos device. No matching destination entry exists in the forwarding table.
How will the device respond?

A The RE responds to the destination with a source unreachable notification message.
B The RE responds to the source with a destination unreachable notification message.
C The PFE responds to the destination with a source unreachable notification message.
D The PFE responds to the source with a destination unreachable notification message.

Question 4

What information would you find using the CLI help function? (Choose two.)

A Junos technical publications
B explanation of traceoption events
C tip for the day
D explanation of specific system log error messages

Question 5

When a system process encounters an error, how does the Junos OS protect other processes from being impacted?

A Each process operates in its own shared memory space.
B The Junos OS executes only one process at a time.
C Each routing protocol runs as an individual process.
D The Junos OS executes multiple processes simultaneously.

Question 6

You are considering an upgrade from 19.1R1 and want to ensure that only bug fixes are included.
Which two software versions should you consider in this situation? (Choose two.)

A 19.3R1-S1
B 19.3R2
C 19.1R3
D 19.1R1-S2

Question 7

What are two benefits realized by the disaggregated Junos OS? (Choose two.)

A There is increased flexibility to use different control plane versions.
B The Junos VM becomes hardware-independent and can be deployed on any hypervisor without modification.
C The architecture facilitates programmability through provisioning the control plane, the data path, and the platform APIs.
D The platform drivers and forwarding engine are removed from the control plane to increase performance.

Question 8

You have entered the command show log messages | match "error|kernel|panic".
Which statement is correct regarding the keywords error, kernel, and panic in the output?

A The output will contain all messages from the file except the ones that contain at least one of the three defined keywords.
B The output will contain all messages from the file that contain at least one of the three defined keywords.
C The output will contain all messages from the file except the ones that contain all three defined keywords.
D The output will contain all messages from the file that contain all three defined keywords.

Question 9

While working on a Junos device, you receive the message shown in the exhibit.
In this scenario, what should you do to stop the shutdown process?

Question Image

A Issue the request system power-off in 0 command.
B Issue the clear system commit command.
C Issue the request system halt in 0 command.
D Issue the clear system reboot command.

Question 10

Which command verifies configuration syntax without applying the changes?

A commit confirmed
B commit check
C commit comment
D commit and-quit

Question 11

What are two services performed by the Packet Forwarding Engine? (Choose two.)

A to process transit traffic
B to handle processes that control the device's interfaces
C to maintain the routing tables
D to implement stateless firewall filtering

Question 12

Referring to the exhibit, which parameter at the end of the command would provide information for troubleshooting purposes?

Question Image

A no-timestamp
B extensive
C print-ascii
D no-resolve

Question 13

Given the configuration shown below:
set system authentication-order [ tacplus ]
Which two statements are correct? (Choose two.)

A If the TACACS+ server is not available, the local user database is checked.
B If the TACACS+ server is available and rejects the username/password provided, the user is not allowed to access the device.
C If the TACACS+ server is not available, the user is not allowed to access the device.
D If the TACACS+ server is available and rejects the username/password provided, the local password database is checked.

Question 14

What are three functions of the RE? (Choose three.)

A to monitor the chassis
B to maintain the forwarding tables
C to implement policing
D to enforce stateless firewall filters
E to manage the PFE

Question 15

Referring to the exhibit, which action would synchronize the local router's clock with the NTP server?

Question Image

A Issue the set date ntp operational command.
B Configure the correct NTP trusted key using the set trusted-key <key-value> configuration command under the [edit system ntp] hierarchy.
C Configure the NTP server using the set boot-server 172.25.11.254 configuration command under the [edit system ntp] hierarchy.
D Reboot the router.

Question 16

Which two statements describe PFE functions? (Choose two.)

A The PFE stores a local copy of the Layer 2 and Layer 3 forwarding tables.
B The PFE provides access to the CLI and J-Web.
C The PFE stores the master copy of the Layer 2 and Layer 3 forwarding tables.
D The PFE implements rate limiting using policers.

Question 17

What is responsible for processing multicast transit traffic?

A control plane
B management plane
C RE
D PFE

Question 18

Referring to the exhibit, which two statements are correct? (Choose two.)

Question Image

A The memory utilization is 28%.
B The memory utilization is 72%.
C The 15 minute CPU load average is 99%.
D The CPU kernel utilization is 1%.

Question 19

Referring to the exhibit, what does the number inside the square brackets represent?

Question Image

A route preference
B metric
C protocol reference number
D local preference

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Which two statements are true about the default behavior of Junos routing policies? (Choose two.)

A Routing policies control the flow of routing information going to and from the forwarding table.
B Routing policies control the flow of routing information going to and from the routing table.
C Routing policies can export active and inactive routes.
D Routing policies can export only active routes.

Which statement is true about the orlonger route-filter match type?

A All routes within the specified prefix that are longer than or equal to the given prefix are considered a match.
B All routes within the specified prefix that are longer or equal to the given prefix up to a defined acceptable prefix length are considered a match.
C All routes within the specified prefix that are longer than the given prefix up to a defined acceptable prefix length are considered a match.
D All routes within the specified prefix that are longer than the given prefix are considered a match.

JN0-103Preview

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