Juniper JN0-106 Valid Exam Questions, Exams JN0-106 Torrent

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Juniper JN0-106 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Configuration Basics: Covers the essential steps for configuring a Junos device from factory default, including user accounts, interfaces, authentication, system services like NTP and SNMP, and configuration archival.
Topic 2
  • Junos OS Fundamentals: Covers the architecture of Junos OS, focusing on the separation of control and forwarding planes and how traffic is processed by the routing and packet-forwarding engines.
Topic 3
  • Networking Fundamentals: Covers core networking concepts including IP addressing, subnetting, Layer 2
  • 3 operations, routing basics, and protocol types essential for understanding how networks function.
Topic 4
  • Operational Monitoring and Maintenance: Covers the tools and procedures used to monitor, maintain, and troubleshoot Junos devices, including show
  • monitor commands, network utilities, OS upgrades, and password recovery.
Topic 5
  • User Interfaces: Covers how to navigate and use the Junos CLI and J-Web interface, including configuration management, output filtering, and working with active versus candidate configurations.
Topic 6
  • Routing Policy and Firewall Filters: Covers how to control traffic flow on Junos devices using routing policies and firewall filters, including policy structure, match criteria, filter actions, and unicast RPF.

Juniper Junos, Associate (JNCIA-Junos) Sample Questions (Q164-Q169):

NEW QUESTION # 164
Which statement is correct when Router R1 receives a packet from User A destined for User B as shown in the exhibit?

Answer: C

Explanation:
Comprehensive and Detailed 150 to 250 words of Explanation From: In a routed environment like the one shown in the exhibit, traffic forwarding involves a constant interaction between Layer 3 (Network) and Layer
2 (Data Link) addressing. When User A generates a packet destined for User B, the source and destination IP addresses remain static throughout the entire journey across the network (assuming no Network Address Translation is performed). However, the Layer 2 Ethernet headers must be rewritten at every hop because MAC addresses have only local significance on a physical segment.
As Router R1 receives the packet from User A, it performs a lookup in its Forwarding Information Base (FIB) and identifies that the path to User B requires forwarding the packet to Router R2. R1 decapsulates the incoming frame, stripping away the original Ethernet header that contained User A ' s source MAC and R1 ' s own destination MAC. To forward the packet to the next hop, R1 creates a new Ethernet header. The source MAC address becomes the MAC address of R1's egress interface, and the destination MAC address is replaced with the MAC address of Router R2 . R1 cannot use User B ' s MAC address at this point because User B is not on a directly connected segment. This hop-by-hop MAC address replacement is essential for the Packet Forwarding Engine to successfully deliver the frame to the next Layer 3 device in the path. Reference:
Networking Fundamentals, Packet Forwarding, Layer 2 and Layer 3 Addressing.


NEW QUESTION # 165
Which statement best describes the primary function of the Routing Engine in a Junos device when processing network traffic and maintaining system control operations?

Answer: A

Explanation:
The Routing Engine is responsible for the control plane, running routing protocols, maintaining routing tables, and managing the device. It does not forward packets; that is the Packet Forwarding Engine's role. This separation improves performance and scalability in Junos architecture.


NEW QUESTION # 166
You want to redeploy a Junos device by clearing the existing configuration and resetting it to factory defaults. In this scenario, which command would help to accomplish this task?

Answer: C

Explanation:
The request system zeroize media command on a Junos device securely erases all data, including configuration and log files, and resets the device to its factory default settings. This command is used when redeploying a device to ensure no residual data remains from its previous deployment. It's a comprehensive and secure way to clear all configurations and data, making the device as if it were new. The other commands listed do not perform a full reset to factory defaults; for example, show system storage displays storage information, and request system storage cleanup offers to delete unnecessary files without resetting the device to factory settings.


NEW QUESTION # 167
Which command would you use to gracefully power off a Junos device?

Answer: B

Explanation:
Maintaining the integrity of the Junos OS file system is a critical operational requirement, especially during maintenance that involves removing power from the hardware. To achieve a graceful power-down, the request system halt command must be used. This command initiates a systematic shutdown of all running software processes and daemons, flushes any pending data from the system ' s volatile memory (RAM) to the solid- state storage or hard disk, and unmounts the file systems correctly. Once the software has safely shut down, the console will typically display a message indicating that it is safe to turn off the physical power switch or remove the power cables.
Using request system halt prevents potential file system corruption that can occur if power is abruptly cut while the OS is actively writing logs or configuration data. This is distinct from request system reboot, which restarts the OS, or request system logout, which merely terminates the current CLI session. As a Senior Architect, it is essential to follow this procedure to ensure that the device remains in a reliable state for its next power-on cycle. For devices equipped with dual Routing Engines, the command can often be directed to a specific member or both simultaneously to ensure a synchronized and safe shutdown of the entire chassis.
Reference: Operational Monitoring and Maintenance, System Halt and Reboot Procedures.


NEW QUESTION # 168
Which two statements are correct about Junos traceoptions? (Choose two.)

Answer: A,B

Explanation:
Traceoptions in Junos OS are used for detailed debugging and troubleshooting of protocols and processes within the system. They are not enabled by default due to the potential performance impact and volume of data generated. Instead, traceoptions are enabled through specific configuration settings under the relevant protocol or process hierarchy. This allows administrators to target their troubleshooting efforts and control the scope of logging. By default, the output generated by traceoptions is stored in files located in the /var/log directory, with the file name typically specified in the traceoptions configuration. This structured approach to logging and debugging helps in diagnosing complex issues without overwhelming the system or the administrator with irrelevant data.


NEW QUESTION # 169
......

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