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Die Fragenkataloge zur Juniper JN0-106 Zertifizierungsprüfung von ZertFragen werden Ihnen zum Erfolg führen. Unsere Fragenkataloge werden von den Experten neuerlich erforscht. Und Sie können deshalb immer die neuesten Forschungsmaterialien bekommen. Wir garantieren Ihnen den Erfolg. Wir helfen Ihnen sehr gerne. Sie werden sicher die genauesten Fragen und Antworten zur Juniper JN0-106 Zertifizierungsprüfung von uns bekommen. Wir aktualisieren ständig unsere Schulungsinstrumente, um den geänderten Prüfungsthemen anzupassen. Eigentlich liegt der Erfolg nicht weit entfernt. Wenn Sie ZertFragen benutzen, können Sie sicher den Erfolg erlangen.
70. Frage
Which two actions would you perform when you are in the operational mode of the CLI? (Choose two.)
Antwort: A,C
Begründung:
The Junos Command Line Interface (CLI) is strictly partitioned into operational and configuration modes to maintain a clear boundary between monitoring and administrative changes. Operational mode, identified by the > prompt, is designed for executing commands that monitor device status, troubleshoot network connectivity, and manage the physical system state. One typical administrative task performed here is clearing log files (using the clear log command) to free up storage space or reset diagnostic data during troubleshooting.
Additionally, high-level system requests that do not alter the persistent configuration database, such as rebooting the hardware, are executed in operational mode. The request system reboot command allows the administrator to gracefully restart the device after a software update or as part of a maintenance cycle. In contrast, actions such as configuring routing protocols or committing changes require transitioning to configuration mode (the # prompt). Committing a configuration is the specific act of moving changes from the candidate database to the active database, which is a logic-altering event strictly reserved for configuration mode. Therefore, operational mode remains the dedicated environment for real-time observation and system- level requests that ensure the device operates correctly within its existing parameters. Reference: User Interfaces, CLI Modes, Operational Mode Commands.
71. Frage
Which two tasks would you perform in operational mode? (Choose two.)
Antwort: B,D
Begründung:
The Junos Command Line Interface (CLI) is structured into two primary hierarchical modes:
operational mode and configuration mode. Operational mode is the default entry point when a user logs into the device, signified by the > prompt. This mode is designed for monitoring the health of the device, troubleshooting network issues, and executing system-level maintenance tasks. Specifically, an administrator uses operational mode to verify the version of Junos OS currently active on the device using the show version command.
Additionally, system-level administrative actions that do not involve modifying the device's persistent configuration logic are performed within the operational mode. This includes requesting the system to reboot or halt via the request system hierarchy of commands. In contrast, tasks that involve manipulating the configuration database--such as committing proposed changes or rolling back to a previous configuration version--require the user to transition into configuration mode, indicated by the # prompt. Understanding this distinction is vital for efficient navigation of the Junos CLI; while operational mode provides the tools to observe the system and manage its physical state, configuration mode is reserved for altering the logical parameters and routing policies that govern device behavior.
72. Frage
According to HPE Juniper Networking, what are two recommended tasks you should perform before upgrading Junos OS on a device? (Choose two.)
Antwort: A,C
Begründung:
Upgrading the Junos OS is a high-impact operation that requires thorough preparation to minimize risk and potential downtime. According to Juniper ' s best practices, one of the most critical preliminary steps is to verify that the device has sufficient available storage space. Using the show system storage command, an administrator can inspect the /var partition, which is the primary directory where software packages are temporarily stored and expanded during the installation process. If the storage is nearly full, the upgrade may fail midway, potentially leaving the device in an inconsistent state or requiring manual intervention via the boot loader.
The second mandatory task is to back up the active configuration . While Junos automatically maintains rollback files locally, these could be lost if the storage media fails or if a " clean install " (format install) becomes necessary. Having an external backup on a remote server or a local workstation ensures that the device ' s identity, policies, and interface settings can be restored quickly regardless of the upgrade outcome.
Other tasks, such as creating a rescue configuration or performing a file system cleanup, are also highly recommended to ensure the " last known good " state is preserved. Disabling interfaces is generally unnecessary as Junos manages the transition gracefully, and deleting rollbacks would counterproductively remove historical recovery points. Ensuring these two pillars-storage availability and off-box backups- provides the safest foundation for a successful software lifecycle management event.
Reference: Operational Monitoring and Maintenance, System Upgrades, Software Installation.
73. Frage
Which two statements about route preference in Junos OS are correct? (Choose two.)
Antwort: C,D
Begründung:
Longest prefix match is evaluated first to select candidate routes for a destination. Among routes to the same prefix, the one with the lowest route preference is chosen as the best path.
74. Frage
Which two statements are correct about Junos OS? (Choose two.)
Antwort: A,B
Begründung:
Junos OS is built upon a highly stable and secure architecture that distinguishes it from many legacy network operating systems. Two of its most defining characteristics are software modularization and the separation of the control and forwarding planes .
Modularization means that Junos OS runs each major function-such as the routing protocol process (rpd), the management process (mgd), and the interface process (dcd)-as an independent software daemon in its own protected memory space. This ensures that if a single process crashes or needs to be restarted, it does not bring down the entire system or interrupt traffic forwarding.
Furthermore, the physical and logical separation of the Control Plane (Routing Engine) and the Forwarding Plane (Packet Forwarding Engine) is a cornerstone of Junos design. The Routing Engine handles complex intelligence, protocol calculations, and management, while the Packet Forwarding Engine performs high- speed packet switching in hardware. This ensures that a heavy management load or a complex routing recalculation won ' t cause " jitter " or packet loss for transit traffic. Conversely, Junos strictly prohibits unsigned third-party binaries to maintain system integrity, and it maintains a clear functional distinction between routing policies (path selection) and security policies (traffic permit/deny).
75. Frage
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