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Juniper JN0-106 인증시험 최신버전덤프만 마련하시면Juniper JN0-106시험패스는 바로 눈앞에 있습니다. 주문하시면 바로 사이트에서 pdf파일을 다운받을수 있습니다. Juniper JN0-106 덤프의 pdf버전은 인쇄 가능한 버전이라 공부하기도 편합니다. Juniper JN0-106 덤프샘플문제를 다운받은후 굳게 믿고 주문해보세요. 궁금한 점이 있으시면 온라인서비스나 메일로 상담받으시면 됩니다.
질문 # 48
Which two statements are correct regarding Layer 2 network switches? (Choose two.)
정답：A,B
설명：
In the Junos OS architecture and general networking standards, Layer 2 switches are designed to increase network efficiency by segmenting collision domains. Unlike legacy hubs, a switch creates a separate collision domain for each of its physical ports. This micro-segmentation allows for full-duplex communication, effectively eliminating the possibility of collisions on individual links. However, while switches segment collision domains, they maintain a single broadcast domain by default.
When a switch receives a broadcast frame, such as an ARP request, it must ensure the frame reaches all possible destinations within the local segment. Consequently, the switch floods the broadcast traffic out of all ports except the one on which it was received. This flooding behavior, while necessary for protocol discovery, makes Layer 2 networks susceptible to traffic loops. If redundant physical paths exist between switches without a loop-prevention mechanism like the Spanning Tree Protocol (STP), broadcast frames can circulate endlessly, leading to a broadcast storm that consumes all available bandwidth and processor resources on the Routing Engine. Furthermore, switches are highly active learners; they populate their Media Access Control (MAC) tables by observing the source addresses of incoming frames to ensure that subsequent unicast traffic is precisely forwarded rather than flooded. Therefore, understanding the management of broadcast domains and the risks of loops is a core competency for any Junos Associate.
Reference: Networking Fundamentals, Collision and Broadcast Domains, Layer 2 Switching Operations.
질문 # 49
Which two tasks should be performed when creating a new user account on a Junos device? (Choose two.)
정답：A,D
설명：
Creating a new user account in Junos OS involves several specific steps within the [edit system login] configuration hierarchy. To establish a functional and secure user account, an administrator must first define the username and assign that user to a login class. Login classes are essential because they define the permissions and access levels for the user, such as super-user, read-only, or operator. Without a login class, a user would have no permissions to perform tasks within the CLI.
The second mandatory task is to configure an authentication method for the user, most commonly a password.
This is typically done using the authentication plain-text-password command, which prompts the administrator to enter and confirm the secret string that the system then hashes and stores. While Junos also supports public-key authentication for SSH, a local password remains the standard for basic access control. It is important to note that SSH access is generally controlled at the system level under [edit system services] and does not need to be enabled on a per-user basis individually. Furthermore, allowing a user to bypass authentication is contrary to the Junos security model and is not a standard task in user account creation.
Reference: User Interfaces, User Management, Login Classes.
질문 # 50
According to HPE Juniper Networking, when should you use the replace pattern command instead of the rename command?
정답：D
설명：
In Junos OS configuration management, the rename and replace pattern commands serve distinct roles for modifying the candidate configuration. The rename command is used when an administrator needs to change the identifier of a specific, single configuration object--such as changing an interface name or a policy-term name--while keeping the underlying properties of that object intact. In contrast, the replace pattern command is a powerful utility designed for bulk modifications across the configuration hierarchy. It utilizes string matching or regular expressions to find every occurrence of a specific text string and substitute it with another.
This is particularly useful in scenarios involving mass updates, such as migrating an entire subnet across multiple interface descriptions, firewall filters, and routing policy terms simultaneously.
While rename acts locally on a specific path, replace pattern can be applied globally from the root of the configuration or constrained to a specific sub-hierarchy. As a Senior Architect, it is critical to understand that replace pattern does not just change names; it can modify any part of the statement text, making it an essential tool for efficient large-scale configuration refactoring without the need for manual, line-by-line edits. Reference: Configuration Basics, Modifying Configuration, Command Line Editing.
질문 # 51
Which command would you use in Junos OS operational mode to verify the status and statistics of network interfaces on the device?
정답：A
설명：
The "show interfaces" command displays detailed information about interfaces, including status, traffic counters, and errors. It is essential for troubleshooting connectivity issues. Other commands focus on routing tables, system users, or software versions instead.
질문 # 52
You are using the factory default configuration on a new Juniper router. You must successfully commit the configuration and activate the device. Which component must be configured before Junos OS will allow you to accomplish this task?
정답：D
설명：
When a Junos device is initialized for the first time or after a factory reset, it operates with a " factory-default
" configuration. This configuration contains the minimum settings necessary for the device to boot, but it lacks essential security parameters. The Junos OS kernel enforces a strict security mechanism that prevents any administrator from successfully executing a commit command until a root-level password has been defined.
Specifically, the root-authentication object must be configured under the [edit system] hierarchy. This requirement ensures that no Junos device is deployed into a production environment with an open, unauthenticated root account. If an administrator attempts to commit changes without this setting, the configuration parser will return a " missing mandatory statement " error and the commit process will fail.
While other settings-such as a system hostname, management IP address (on the fxp0 or me0 interfaces), or logical interface configurations-are critical for operational readiness, they are not strictly enforced by the system validation logic for the initial activation. Only the root-authentication (which can be a plain-text password or an encrypted key) is a hard prerequisite for transitioning the device from a default state to an active, running configuration.
Reference: Configuration Basics, Initial Configuration, System Security.
질문 # 53
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