Nokia高効率の4A0-D03学習教材を使用すれば、プロの認定試験に合格した製品を使用しなかった場合に必要な時間の半分を費やすだけで済みます。 このようにして、旅行、パーティー、さらに別の試験の準備をする時間が増えます。 あなたにとって4A0-D03トレーニングトレント：Tech4ExamのNokia SR Linux EVPN and Data Center Interconnectの利点は、金銭による評価からはほど遠いものです。 一流の専門家チーム、Nokia SR Linux EVPN and Data Center Interconnect高度な学習コンセプト、完全な学習モデルがあります。 私たちの学習教材であなたのために節約された時間は4A0-D03、私たちにとって最大のリターンです。
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Layer 2 EVPN Services | 25% | - Multi-homing and Ethernet Segments - Anycast Gateway and IRB - EVPN Route Types 1–4 |
| Topic 2: SR Linux and EVPN Fundamentals | 25% | - EVPN control plane and MP-BGP - VXLAN encapsulation and underlay - SR Linux architecture and CLI |
| Topic 3: Data Center Interconnect (DCI) Solutions | 25% | - BGP route policies and route reflectors - Gateway-less EVPN DCI - Interoperability with Nokia 7750 SR |
| Topic 4: Layer 3 EVPN Services | 25% | - Symmetric and asymmetric routing - EVPN Route Type 5 - VRF integration and route targets |
Tech4Examの実践教材は、学生だけでなくオフィスワーカーにも適用されます。 職場の退役軍人だけでなく、新しく採用された新人にも適用されます。 4A0-D03の学習教材は、非常にシンプルで理解しやすい言語を使用して、すべての人が学習して理解できるようにします。 また、4A0-D03の実際のテストでは、教科書を読むのがつまらないことを回避できますが、Nokia演習を行う過程で重要な知識をすべて習得できます。 そして、4A0-D03試験問題の高い合格率は98％以上です。 Nokia SR Linux EVPN and Data Center Interconnect学習ガイドを試してみませんか？
質問 # 57
Which of the following statements about a L3 EVPN network using symmetric routing is FALSE?
正解：B
解説：
Comprehensive and Detailed 150 to 250 words of Explanation From [SR Linux EVPN and Data Center Interconnect/Course Guide/topics]:
Symmetric L3 EVPN routing uses an IP-VRF-based overlay model in which both ingress and egress PEs participate in routed forwarding. The ingress PE receives the frame from the local MAC-VRF, routes it into the IP-VRF, and sends it across the VXLAN routed interface. The egress PE receives the routed overlay packet, performs the corresponding IP-VRF lookup, and then forwards it into the locally attached destination MAC-VRF. Because the routed overlay is built per IP-VRF, a routed-VXLAN interface is required for that IP-VRF. EVPN route type 5 support is also required because RT-5 carries IP prefix reachability across the EVPN control plane. The false statement is option D. Symmetric routing specifically removes the requirement for every MAC-VRF to exist on every PE. A PE only needs the MAC-VRFs for locally attached subnets, plus the shared IP-VRF and routed overlay state. This is the major scaling advantage of symmetric routing compared with designs that require broad MAC-VRF instantiation across the fabric. Reference: symmetric L3 EVPN routing, routed VXLAN interface, RT-5 prefix reachability, MAC-VRF scaling.
質問 # 58
Which of the following statements describes the function or operation of the integrated gateway-based data center interconnect solution?
正解：D
解説：
Comprehensive and Detailed 150 to 250 words of Explanation From [SR Linux EVPN and Data Center Interconnect/Course Guide/topics]:
In an integrated gateway-based DCI design, the same physical or logical router performs both the data center gateway role and the WAN PE role. This is why option D is correct. The device terminates or participates in the data center-side EVPN service and also handles the WAN-side VPN transport, including route translation or re-advertisement where needed. This approach avoids exposing every data center leaf router to the WAN and avoids requiring route reflector reachability between data centers. It also avoids building VXLAN tunnels directly between all leaf routers in separate data centers. Those characteristics belong to gateway-less DCI, where the EVPN overlay stretches more directly across the WAN and the WAN must carry the underlay or overlay reachability required by the data center leaves. Integrated gateway design is more controlled: the gateway is the interworking point, which makes it suitable when the provider or operator wants a strong service boundary and centralized DCI policy enforcement. Reference: integrated gateway-based DCI, single-router gateway/WAN PE function, EVPN/VPN interworking.
質問 # 59
Which of the following statements about the configuration of a Layer 3 multi-homing with a centralized router is FALSE?
正解：A
解説：
Comprehensive and Detailed 150 to 250 words of Explanation From [SR Linux EVPN and Data Center Interconnect/Course Guide/topics]:
Layer 3 EVPN multi-homing with a centralized router uses an Ethernet Segment to associate multiple leaf routers with a common external L3 attachment. The centralized router is part of that attached segment from the forwarding perspective, and the connected leaf routers advertise third-party or customer prefixes into EVPN so that remote leaves can reach those prefixes through the multi-homed attachment. For L3 EVPN, learned customer prefixes are normally advertised using EVPN route type 5, which carries IP prefix reachability. In an all-active design, remote leaf routers may load balance traffic to the customer prefix through multiple attached leaf routers because the ES next-hop allows the remote PE to understand that the prefix is reachable through a multi-homed Ethernet Segment. The false statement is that every router participating in the Ethernet Segment must be configured with all-active mode. Multi-homing mode is a design and configuration property of the EVPN PEs participating in the ES, and designs may use single-active or all-active behavior depending on redundancy and forwarding requirements. Reference: L3 EVPN multi-homing, centralized router attachment, EVPN RT-5 prefix advertisement.
質問 # 60
Which of the following statements about utilizing asymmetric routing in an L3 EVPN network is FALSE?
正解：D
解説：
Comprehensive and Detailed 150 to 250 words of Explanation From [SR Linux EVPN and Data Center Interconnect/Course Guide/topics]:
In asymmetric L3 EVPN routing, the ingress PE performs the routing decision and then sends traffic across the overlay in the context of the destination MAC-VRF. The egress PE performs Layer 2 MAC forwarding only toward the destination host. This is why options A and B correctly describe asymmetric data-plane behavior. Asymmetric routing relies heavily on EVPN route type 2 MAC/IP Advertisement routes because the ingress PE must know the destination host's MAC/IP binding and the destination bridge domain information. EVPN route type 5, which advertises IP prefixes, is a symmetric L3 EVPN mechanism and is not mandatory for asymmetric routing. Therefore, option C is false. Option D is treated as correct in this asymmetric-routing model because each PE participating in inter-subnet forwarding needs the destination MAC-VRF context to encapsulate traffic toward the correct L2 VNI. This requirement is one reason asymmetric routing scales less efficiently than symmetric routing: MAC-VRF presence and host reachability information must be broadly available. Symmetric routing improves scale by using an IP-VRF routed VXLAN interface and RT-5 prefix routes instead. Reference: asymmetric L3 EVPN routing, ingress IP/MAC forwarding, egress MAC forwarding, RT-2 versus RT-5 usage.
質問 # 61
Which of the following statements about utilizing VXLAN for the data plane in the data center is FALSE?
正解：A
解説：
Comprehensive and Detailed 150 to 250 words of Explanation From [SR Linux EVPN and Data Center Interconnect/Course Guide/topics]:
VXLAN provides a Layer 2 overlay over a Layer 3 underlay by encapsulating Ethernet frames in UDP/IP. This allows tenant bridge domains to span a routed IP fabric without requiring the underlay itself to behave like one large Layer 2 network. VXLAN uses a 24-bit VXLAN Network Identifier, which supports approximately 16 million logical overlays, far exceeding the scale of traditional 12-bit VLAN IDs. Because the VXLAN underlay is IP-routed, traffic can benefit from ECMP across equal-cost paths, improving fabric utilization and resiliency. The false statement is B. VXLAN was not originally developed specifically to support EVPN. VXLAN began as a data-plane overlay encapsulation technology, while EVPN later became the preferred control plane for distributing MAC, MAC/IP, multicast, and prefix reachability in VXLAN-based fabrics. In modern data center design, EVPN and VXLAN are commonly paired: VXLAN supplies the encapsulation and VNI-based segmentation, while EVPN supplies scalable control-plane learning and signaling. Reference: VXLAN data plane, EVPN control plane, ECMP underlay, VNI-based tenant isolation.
質問 # 62
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多くの人々は、ある分野での仕事に秀でることができ、知識をある産業での実際の仕事に応用するのに熟練した有能な人になりたいと思っています。しかし、彼らにとっては簡単なことではなく、目標を達成するために多くの努力が必要です。テスト4A0-D03認定に合格すると、彼らはそのような人々になります。あなたが彼らの1人であれば、4A0-D03学習教材を購入することで、少ない労力でスムーズにテストに合格できます。 4A0-D03試験の質問は価値があり、有用です。当社の製品を購入すると、最高のサービスを提供して満足することができます。
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