JPTestKingの専門家チームが君の需要を満たすために自分の経験と知識を利用してJuniperのJN0-106認定試験対策模擬テスト問題集が研究しました。模擬テスト問題集と真実の試験問題がよく似ています。一目でわかる最新の出題傾向でわかりやすい解説と充実の補充問題があります。
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質問 # 81
Click the Exhibit button.
Referring to the exhibit, what would be the next-hop address for the packet destined for the
10.0.0.0/24 network if the ge-0/0/1 interface goes down?
正解：B
解説：
If the ge-0/0/1.0 interface goes down, the route to 10.0.0.0/24 learned via ge-0/0/1.0 (10.12.0.1) is lost. The router will use the next available route, which is the static route to 10.0.0.0/24 via
10.23.0.3 on ge-0/0/2.0.
質問 # 82
Which statement accurately describes the Junos OS CLI?
正解：C
解説：
The statement describing commit confirmed 5 is correct. In Junos OS, configuration changes are first made to a candidate configuration . They do not become the active operational configuration merely because they have been entered in configuration mode. A commit operation is required to validate and activate those changes.
The commit confirmed mechanism provides an important administrative safety feature. When the administrator enters:
commit confirmed 5
Junos OS activates the candidate configuration but requires confirmation within 5 minutes . If the configuration is not confirmed before the timer expires, Junos OS automatically rolls back to the previously committed configuration. Juniper explicitly documents that the optional number following commit confirmed specifies the confirmation period in minutes.
Option A is incorrect because operational mode is primarily used for monitoring, troubleshooting, maintenance, and operational commands rather than making persistent configuration changes. Option B is incorrect because configuration-mode edits remain candidate changes until committed. Option D is also incorrect: rollback 0 does not restore factory defaults . It loads the most recently committed configuration and effectively removes pending uncommitted modifications.
Study Guide Reference Topics: Configuration Basics - candidate versus active configuration, commit operations, confirmed commits, configuration rollback, and Junos CLI modes.
質問 # 83
Which statement is correct when Router R1 receives a packet from User A destined for User B as shown in the exhibit?
正解：A
解説：
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.
質問 # 84
Which two tasks are performed by the Routing Engine in a Junos device? (Choose two.)
正解：A、C
解説：
The Routing Engine (RE) functions as the centralized processor and administrative core of any Junos OS-based platform. Its primary responsibility involves the execution and maintenance of the control plane, which includes running all active routing protocols such as OSPF, BGP, and IS- IS. Through these protocols, the RE exchanges topology information with neighboring routers, builds the Routing Information Base (RIB), and calculates the optimal paths for traffic. Once these paths are determined, the RE distributes the resulting Forwarding Information Base (FIB) to the Packet Forwarding Engine (PFE) for hardware-level execution.
In addition to its protocol duties, the Routing Engine manages the device configuration and the overall system environment. This includes providing the user interface (CLI or J-Web), managing the candidate and active configuration databases, and handling the commit process. While the PFE is specifically designed to forward transit traffic and evaluate that traffic against firewall filters at line rate, the RE focuses on the higher-level logic and management tasks. This architectural separation ensures that management functions--such as a complex configuration commit or a protocol re-convergence event--do not degrade the performance of the data plane, allowing the device to continue forwarding user traffic without interruption.
質問 # 85
Which two statements are correct about a Routing Engine? (Choose two.)
正解：A、B
解説：
The architecture of a Junos device is bifurcated into two primary functional planes: the Control Plane, managed by the Routing Engine (RE), and the Data Plane, managed by the Packet Forwarding Engine (PFE).
The Routing Engine serves as the " brain " of the device. One of its primary responsibilities is the processing of management traffic, which includes handling CLI sessions (SSH, Telnet), SNMP requests, and system logging. Because the RE runs the Junos OS kernel, it provides the environment for all administrative tasks and system management utilities.
Additionally, the Routing Engine is responsible for the intelligence of the network, which involves running routing protocols (such as OSPF, BGP, or IS-IS) and maintaining the master routing tables. It populates the Routing Information Base (RIB) with all learned paths and then calculates the best paths to build the Forwarding Information Base (FIB). This FIB is then pushed to the PFE for hardware-level packet switching.
It is a common misconception that the RE handles transit traffic; however, the RE only handles " exception traffic " or traffic destined for the device itself. This separation ensures that the control plane remains stable and responsive even during periods of heavy transit load on the forwarding plane. Reference: Junos OS Fundamentals, Architectural Overview, Control Plane vs. Forwarding Plane.
質問 # 86
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現在の仕事に満足していますか。自分がやっていることに満足していますか。自分のレベルを高めたいですか。では、仕事に役に立つスキルをもっと身に付けましょう。もちろん、IT業界で働いているあなたはIT認定試験を受けて資格を取得することは一番良い選択です。それはより良く自分自身を向上させることができますから。もっと大切なのは、あなたもより多くの仕事のスキルをマスターしたことを証明することができます。では、はやくJuniperのJN0-106認定試験を受験しましょう。この試験はあなたが自分の念願を達成するのを助けることができます。試験に合格する自信を持たなくても大丈夫です。JPTestKingへ来てあなたがほしいヘルパーと試験の準備ツールを見つけることができますから。JPTestKingの資料はきっとあなたがJN0-106試験の認証資格を取ることを助けられます。
JN0-106的中関連問題: https://www.jptestking.com/JN0-106-exam.html