Junos, Associate (JNCIA-Junos) test dumps & exam questions for Juniper JN0-106

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Juniper JN0-106 Exam Syllabus Topics:

TopicDetails
Topic 1
  • 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 2
  • 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 3
  • 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.

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Juniper Junos, Associate (JNCIA-Junos) Sample Questions (Q67-Q72):

NEW QUESTION # 67
What are two functions of the routing protocol daemon (rpd)? (Choose two.)

Answer: A,C

Explanation:
The Routing Protocol Daemon (rpd) is a critical component in Juniper Networks devices, responsible for all routing operations. It maintains routing tables, which hold information about network paths and destinations derived from various routing protocols. These tables are used to make decisions about where to send packets. Additionally, rpd generates forwarding tables based on the information in the routing tables. The forwarding tables are then used by the Packet Forwarding Engine (PFE) to actually forward packets to their next hop or final destination.


NEW QUESTION # 68
What does the Junos CLI prompt indicate when it ends with a hash symbol (#)?

Answer: C

Explanation:
In Junos OS, a prompt ending with the hash symbol indicates configuration mode, where the user can make and commit configuration changes.


NEW QUESTION # 69
What are two benefits when implementing class of service? (Choose two.)

Answer: A,D

Explanation:
Class of Service (CoS) is a method used to prioritize traffic based on its type or importance. It allows you to define different levels of service for different types of traffic.
B). Traffic congestion can be managed: CoS helps to prioritize traffic and allocate bandwidth more effectively, allowing critical or time-sensitive traffic to be given priority over less important traffic, which helps to manage congestion.
D). Latency-sensitive traffic can be prioritized: CoS enables you to give higher priority to latency- sensitive traffic (e.g., VoIP or video) over less time-sensitive traffic (e.g., file transfers), ensuring that these critical services perform well even during network congestion.


NEW QUESTION # 70
What are two requirements for root password recovery in Junos? (Choose two.)

Answer: C,D

Explanation:
Root password recovery in Junos OS is a critical administrative procedure designed to regain access to the management plane when the root credentials are lost. This process is fundamentally tied to the physical security of the device, as it requires two specific conditions that cannot be met over a standard network connection. First, the administrator must have direct console access to the device. Because the recovery process involves interrupting the Junos boot sequence before the operating system kernel and its associated security services (such as SSH) are fully initialized, it must be performed through the serial management port.
Second, a system reboot is mandatory. The recovery mechanism is triggered by interrupting the boot loader (typically the " Loader " or " U-Boot " stage) by pressing the Space bar or a specific key sequence during power-on. This allows the administrator to enter " single-user mode " or boot into a " recovery " state. Once in this restricted environment, the device mounts its internal storage in a way that permits the modification of the root authentication parameters without requiring the existing password. This workflow intentionally bypasses the standard authentication database to restore management control while preserving the rest of the device configuration. This procedure underscores the importance of securing physical access to the chassis, as anyone with console access and the ability to cycle power can eventually gain root-level authority over the system.
Reference: Operational Monitoring and Maintenance, System Recovery and Password Management.


NEW QUESTION # 71
Which statement is correct when Router R1 receives a packet from User A destined for User B as shown in the exhibit?

Answer: A

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 # 72
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