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Which two functions are performed by the PFE? (Choose two.)
A. It implements firewall filters.
B. It selects active routes
C. It forwards transit traffic.
D. It maintains the routing table.
Explanation: The Packet Forwarding Engine (PFE) in Junos OS performs several key functions, including implementing firewall filters (A) and forwarding transit traffic (C). The PFE applies firewall filter rules to incoming and outgoing traffic and is responsible for the high-speed forwarding of packets based on the information in the forwarding table.
What is a benefit of using J-Web?
A. It simultaneously manages multiple devices.
B. It provides a customizable dashboard.
C. It provides more advanced features than the CLI.
D. It provides console-based management.
Explanation: If you've committed a configuration and then need to revert to the previous configuration, the rollback command is used. Since the incorrect IP address has not been committed, as indicated by the commit check command being successful, issuing rollback 1 will undo the changes made in the current session, which includes the accidental entry of the IP address.
You received a new Junos device and are configuring the system-related settings. You
must configure this device for the current date and time on the US West coast. You have
set the time zone to America/Los_Angeies. however the time and date did not change.
In this scenario, which two additional actions would satisfy this requirement? (Choose two.)
A. Set the date and time setting manually.
B. Configure an NTP server.
C. Configure a DNS server.
D. Reboot the device.
Explanation: When configuring the system-related settings for the current date and time on a Junos device, especially for a specific time zone like America/Los_Angeles, and the time does not automatically adjust, two effective actions can be taken. Firstly, setting the date and time manually allows for immediate correction of the system clock. This can be done via the CLI with the appropriate set date and time command. Secondly, configuring the device to use an NTP server can provide ongoing synchronization with an accurate time source, ensuring that the device maintains the correct time and date automatically in the future, even in the case of restarts or minor drifts in the internal clock.
Which statement is correct when multiple users are configuring a Junos device using the configure private command?
A. A commit by any user will commit changes made by all active users.
B. A commit will not succeed until there is only a single user in configuration mode.
C. Each user gets their own candidate configuration.
D. Each user shares the same candidate configuration.
Explanation: When multiple users are configuring a Junos device using the "configure private" command, each user gets their own candidate configuration (C). This allows for isolated configuration sessions, where changes made by one user do not impact or interfere with the changes made by another user in their private session.
You are asked to view the real-time usage statistics for the busiest interfaces on a device
running Junos OS.
Which command will achieve this task?
A. monitor traffic absolute-sequence
B. monitor interface traffic
C. monitor traffic
D. show interfaces extensive
Explanation: To view real-time usage statistics for the busiest interfaces on a device running Junos OS, the correct command is B, "monitor interface traffic." This command provides a dynamic, real-time view of the traffic flowing through the interfaces, allowing administrators to quickly identify and monitor the busiest interfaces on the device.
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