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JN0-683学習資料 & JN0-683資格認定

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Juniper JN0-683 認定試験の出題範囲：

トピック
出題範囲

トピック 1

レイヤー 3 ファブリック: このセクションでは、データセンターで IP ベースのネットワークを管理する専門家の知識を測定します。IP ファブリックのアーキテクチャとルーティングをカバーし、候補者がネットワークがスケーラビリティのためにどのように構成されているか、トラフィックが効率的にルーティングされる方法を理解できるようにします。

トピック 2

EVPN-VXLAN シグナリング: このセクションでは、ルートタイプ、マルチキャスト処理、マルチプロトコル BGP (MBGP) などのイーサネット VPN (EVPN) の概念に関する理解を評価します。また、CRB や ERB、MAC 学習、対称ルーティングなどの EVPN アーキテクチャについても説明します。

トピック 3

データセンターの展開と管理: このセクションでは、主要な展開コンセプトに焦点を当てて、アーキテクトやエンジニアなどのデータセンターネットワークプロフェッショナルの専門知識を評価します。トピックには、手動入力なしでデータセンターのデバイスセットアップを自動化するゼロタッチプロビジョニング (ZTP) が含まれます。

トピック 4

データセンター相互接続: データセンターエンジニア向けのこのパートでは、データセンターの相互接続、レイヤー 2 およびレイヤー 3 のストレッチ、ファブリックのステッチ、EVPN シグナル VXLAN を使用したデータセンター間のシームレスな通信について説明します。

>> JN0-683学習資料 <<

JN0-683試験の準備方法 | 真実的なJN0-683学習資料試験 | 有難いData Center, Professional (JNCIP-DC)資格認定

どんな業界で自分に良い昇進機会があると希望する職人がとても多いと思って、IT業界にも例外ではありません。ITの専門者はJuniperのJN0-683認定試験があなたの願望を助けって実現できるのがよく分かります。Tech4Examはあなたの夢に実現させるサイトでございます。

Juniper Data Center, Professional (JNCIP-DC) 認定 JN0-683 試験問題 (Q51-Q56):

質問 # 51
Exhibit.

You are deploying a VXLAN overlay with EVPN as the control plane in an ERB architecture.
Referring to the exhibit, which three statements are correct about where the VXLAN gateways will be placed?
(Choose three.)

A. Only the border and leaf devices will have L3 VXLAN gateways.
B. All leaf devices will have L2 VXLAN gateways.
C. All leaf devices will have L3 VXLAN gateways.
D. Only the spine devices will have L2 VXLAN gateways.
E. Spine devices will have no VXLAN gateways.

正解：B、C、E

解説：
* Understanding ERB Architecture:
* ERB (Edge Routed Bridging) architecture is a network design where the routing occurs at the edge (leaf devices) rather than in the spine devices. In a VXLAN overlay network with EVPN as the control plane, leaf devices typically act as both Layer 2 (L2) and Layer 3 (L3) VXLAN gateways.
* Placement of VXLAN Gateways:
* Option B:All leaf devices will have L2 VXLAN gateways to handle the bridging of VLAN traffic into VXLAN tunnels.
* Option C:All leaf devices will also have L3 VXLAN gateways to route traffic between different VXLAN segments (VNIs) and external networks.
* Option E:Spine devices in an ERB architecture generally do not function as VXLAN gateways.
They primarily focus on forwarding traffic between leaf nodes and do not handle VXLAN encapsulation/decapsulation.
Conclusion:
* Option B:Correct-All leaf devices will have L2 VXLAN gateways.
* Option C:Correct-All leaf devices will have L3 VXLAN gateways.
* Option E:Correct-Spine devices will not act as VXLAN gateways

質問 # 52
You want to ensure thatVXLAN traffic from the xe-0/0/12 interlace is being encapsulatedby logical vlep.
32770 and sent to a remote leaf device in this scenario, which command would you use to verify that traffic is flowing?

A. show interfaces terse vtep.32770 statistics
B. show interfaces vtep.32770 detail
C. monitor traffic interface xe-0/0/12
D. show interface terse vtep.32770

正解：A

解説：
* VXLAN Traffic Verification:
* To ensure VXLAN traffic from the xe-0/0/12 interface is correctly encapsulated by the logical vtep.32770 and sent to a remote leaf device, it is essential to monitor the relevant interface statistics.
* The command show interfaces terse vtep.32770 statistics provides a concise overview of the traffic statistics for the specific VTEP interface, which can help verify whether traffic is being correctly encapsulated and transmitted.
* Explanation:
* This command is particularly useful for quickly checking the traffic counters and identifying any potential issues with VXLAN encapsulation or transmission.
* It allows you to confirm that traffic is flowing as expected, by checking the transmitted and received packet counters.
Data Center References:
* Monitoring interface statistics is a crucial step in troubleshooting and validating network traffic, particularly in complex overlay environments like EVPN-VXLAN.

質問 # 53
Exhibit.

You are troubleshooting an IP fabric (or your data center. You notice that your traffic is not being load balanced to your spine devices from your leaf devices. Referring to the configuration shown in the exhibit, what must be configured to solve this issue?

A. The load-balance policy must have a from statement that matches on protocol bgp.
B. The load-balance policy must be applied as an export policy to your BGP
C. The multipastmultiple -as configuration must be configured for each peer in the BGP spine group.
D. The load-balance policy must be applied to the forwarding table under the routing-options hierarchy.

正解：C

解説：
* IP Fabric Load Balancing:
* In the provided configuration, traffic is not being load-balanced to the spine devices. The issue likely relates to how BGP routes are being selected and whether Equal-Cost Multi-Path (ECMP) is functioning correctly.
* Multipath Multiple-AS:
* Option B:The multipath multiple-as configuration is essential when using BGP in an IP fabric where devices belong to different Autonomous Systems (AS). This setting allows BGP to consider multiple paths (even across different AS numbers) as equal cost, enabling ECMP and proper load balancing across spine devices.
Conclusion:
* Option B:Correct-The multipath multiple-as configuration is necessary for achieving ECMP and effective load balancing in a multi-AS BGP environment.

質問 # 54
You are designing an IP fabric tor a large data center, and you are concerned about growth and scalability.
Which two actions would you take to address these concerns? (Choose two.)

A. Design a three-stage Clos IP fabric.
B. Use OFX5700 Series devices as the super spines.
C. Use EX4300 Series devices as the spine devices.
D. Design a five-stage Clos IP fabric.

正解：A、B

解説：
* Clos IP Fabric Design:
* A Clos fabric is a network topology designed for scalable, high-performance data centers. It is typically arranged in multiple stages, providing redundancy, high bandwidth, and low latency.
* Three-Stage Clos Fabric:
* Option B:A three-stage Clos fabric, consisting of leaf, spine, and super spine layers, is widely used in data centers. This design scales well and allows for easy expansion by adding more leaf and spine devices as needed.
* Super Spines for Scalability:
* Option D:Using high-capacity devices like the QFX5700 Series as super spines can handle the increased traffic demands in large data centers and support future growth. These devices provide the necessary bandwidth and scalability for large-scale deployments.
Conclusion:
* Option B:Correct-A three-stage Clos fabric is a proven design that addresses growth and scalability concerns in large data centers.
* Option D:Correct-QFX5700 Series devices are suitable for use as super spines in large-scale environments due to their high performance.

質問 # 55
Exhibit.

Given the configuration shown in the exhibit, why has the next hop remained the same for the EVPN routes advertised to the peer 203.0.113.2?

A. The vpn-apply-export parameter must be applied to this peer.
B. The vrf-export parameter must be applied.
C. The export policy is incorrectly configured.
D. EVPN routes cannot have the next hop changed.

正解：A

解説：
* Understanding the Configuration:
* The configuration shown in the exhibit involves an EVPN (Ethernet VPN) setup using BGP as the routing protocol. The export policy named CHANGE_NH is applied to the BGP group evpn- peer, which includes a rule to change the next hop for routes that match the policy.
* Issue with Next Hop Not Changing:
* The policy CHANGE_NH is correctly configured to change the next hop to 203.0.113.10 for the matching routes. However, the next hop remains unchanged when advertising EVPN routes to the peer 203.0.113.2.
* Reason for the Issue:
* In Junos OS, when exporting routes for VPNs (including EVPN), the next-hop change defined in a policy will not take effect unless the vpn-apply-export parameter is used inthe BGP configuration. This parameter ensures that the export policy is applied specifically to VPN routes.
* The vpn-apply-export parameter must be included to apply the next-hop change to EVPN routes.
* Correct Answer Explanation:
* D. The vpn-apply-export parameter must be applied to this peer:This is the correct solution because the next hop in EVPN routes won't be altered without this parameter in the BGP configuration. It instructs the BGP process to apply the export policy to the EVPN routes.
Data Center References:
* This behavior is standard in EVPN deployments with Juniper Networks devices, where the export policies applied to VPN routes require explicit invocation using vpn-apply-export to take effect.

質問 # 56
......

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JN0-683資格認定: https://www.tech4exam.com/JN0-683-pass-shiken.html

P.S. Tech4ExamがGoogle Driveで共有している無料かつ新しいJN0-683ダンプ：https://drive.google.com/open?id=1_RPuXwyTJlZb6f13YpmQfO1zvmaXCb9J

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