4A0-D03완벽한시험덤프 - 4A0-D03시험패스자료

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Nokia 4A0-D03 Exam Syllabus Topics:

SectionObjectives
Topic 1: EVPN Fundamentals- EVPN architecture and control plane
  • 1. MAC/IP advertisement concepts
    • 2. BGP EVPN route types overview
      - VXLAN data plane basics
      • 1. Encapsulation and forwarding behavior
        • 2. VTEP operation principles
          Topic 2: BGP EVPN Control Plane Operations- Route distribution and policies
          • 1. Policy-based control of EVPN routes
            • 2. Route targets and route distinguishers
              - Multi-homing scenarios
              • 1. DF election mechanisms
                • 2. Active-active and active-standby models
                  Topic 3: SR Linux Data Center Architecture- SR Linux system fundamentals
                  • 1. Configuration model and management
                    • 2. Network operating system concepts
                      - Fabric design principles
                      • 1. Scalability and redundancy considerations
                        • 2. Leaf-spine topology design
                          Topic 4: Data Center Interconnect (DCI)- Interconnecting data centers with EVPN
                          • 1. Routing separation and segmentation
                            • 2. L2 and L3 extension methods
                              - Resiliency and convergence
                              • 1. Failure handling mechanisms
                                • 2. Multi-site redundancy design

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                                  4A0-D03시험패스자료 - 4A0-D03최신 덤프문제보기

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                                  최신 Nokia Certified Data Center Fabric Professional 4A0-D03 무료샘플문제 (Q35-Q40):

                                  질문 # 35
                                  When PEs are connected to an Ethernet segment with at least one active MAC-VRF, which of the following statements about the AD per EVI updates sent by a PE is FALSE?

                                  정답：C

                                  설명：
                                  Comprehensive and Detailed 150 to 250 words of Explanation From [SR Linux EVPN and Data Center Interconnect/Course Guide/topics]:
                                  Ethernet Auto-Discovery per EVI routes are EVPN route type 1 advertisements used in multi-homing at the service-instance level. A PE sends an AD per EVI route for each MAC-VRF associated with the Ethernet Segment. These routes allow remote PEs to understand that the advertising PE has reachability to a given EVI through the shared ES. They are also used for aliasing and fast convergence, because a remote PE can treat multiple attached PEs as valid paths for traffic toward the same multihomed segment. In VXLAN EVPN, the update can include data-plane information such as the VNI, and it carries route-target information so the route is imported into the correct MAC-VRF. Option B is false because the multi-homing type or redundancy mode is not carried in the AD per EVI update as stated. Redundancy behavior is associated with Ethernet Segment-level signaling and configuration, especially ES discovery and related route attributes, not with AD per EVI as the mechanism that declares the multi-homing type. Reference: EVPN RT-1 AD per EVI, MAC-VRF association, route target, VNI, aliasing.


                                  질문 # 36
                                  A host is connected to multiple PEs through multi-homing.
                                  Which of the following is NOT a function of the EVPN route-type 4 route?

                                  정답：C

                                  설명：
                                  Comprehensive and Detailed 150 to 250 words of Explanation From [SR Linux EVPN and Data Center Interconnect/Course Guide/topics]:
                                  EVPN route type 4 is the Ethernet Segment route. Its core role is to advertise Ethernet Segment membership so that PEs attached to the same multi-homed segment can discover each other. This discovery is essential for multi-homing procedures such as DF election, split-horizon behavior, and redundancy handling. When multiple PEs advertise the same ESI, the EVPN control plane can build the candidate set of PEs that participate in that Ethernet Segment. This enables DF election for BUM forwarding and supports the correct interpretation of the segment's redundancy model. The incorrect statement is option C. The election algorithm itself is not the basic function of the route type 4 advertisement in the way the question frames it. The route type is primarily about Ethernet Segment discovery and participation; the algorithmic decision process is derived from configured DF election behavior and candidate information, not from route type 4 acting as a generic algorithm identifier. Therefore, route type 4 enables DF procedures, but it is not described as the mechanism that identifies the election algorithm type. Reference: EVPN RT-4 Ethernet Segment route, DF election, multi-homing discovery.


                                  질문 # 37
                                  Consider the exhibit.

                                  All three of the leafs have a MP-BGP EVPN session to the route-reflector Spine-1. Leaf-1, Leaf-2 and Leaf-3 have existing instances of an L2 EVPN named MAC VRF-1. Host-1 has just sent its first Ethernet frame into MAC VRF-1 on Leaf-1.
                                  Which of the following steps is FALSE?

                                  정답：B

                                  설명：
                                  Comprehensive and Detailed 150 to 250 words of Explanation From [SR Linux EVPN and Data Center Interconnect/Course Guide/topics]:
                                  When Host-1 sends its first Ethernet frame into MAC VRF-1, Leaf-1 performs normal local data-plane MAC learning on the access interface and installs Host-1's MAC address into the MAC forwarding table. In an L2 EVPN MAC-VRF, host MAC reachability is then advertised into the EVPN control plane using EVPN route type 2, the MAC/IP Advertisement route. Route type 5 is not used for host MAC advertisement; RT-5 is used for IP prefix advertisement in Layer 3 EVPN services. Therefore, option B is false because it incorrectly states that Leaf-1 generates an EVPN RT-5 update with the host MAC address. In this topology, Leaf-1 sends the correct EVPN update to the route reflector, Spine-1. The route reflector then reflects the update to Leaf-2 and Leaf-3, and those remote leaves import the route if the route target matches their MAC VRF-1 import policy. The route target controls service membership, ensuring that only PEs participating in the same EVPN instance import the MAC route. Reference: L2 EVPN MAC learning, RT-2 MAC/IP advertisement, route-reflector distribution, route-target import.


                                  질문 # 38
                                  A host is connected to multiple PEs through multi-homing.
                                  Which of the following is NOT a function of the EVPN route-type 4 route?

                                  정답：C


                                  질문 # 39
                                  Consider the exhibit.

                                  Based upon the information in the screen captures, which of the following statements is FALSE?

                                  정답：B

                                  설명：
                                  Comprehensive and Detailed 150 to 250 words of Explanation From [SR Linux EVPN and Data Center Interconnect/Course Guide/topics]:
                                  The exhibit describes an EVPN IRB environment where MAC-VRF100 and IP-VRF-100 exchange host reachability through local learning and EVPN advertisements. Leaf-1 can advertise EVPN route type 2 updates containing host MAC/IP information for MAC-VRF100. This is the normal mechanism used to distribute endpoint bindings learned from local hosts. If IP-VRF-100 is not configured for prefix advertisement, Leaf-1 will not generate EVPN route type 5 updates for that IP-VRF, so option A is consistent. The ARP cache in the IP-VRF is normally required for local subnet host resolution; remote host reachability can be learned through EVPN rather than requiring every remote ARP entry to be learned by local data-plane ARP. Option B is false because ARP/GARP snooping is not performed by the IRB interface in the manner stated. ARP/GARP learning for proxy ARP and MAC/IP advertisement is associated with the MAC-VRF bridge-domain behavior and the local access side, not with the IRB subinterface indiscriminately snooping all ARP/GARP messages as described. Reference: EVPN IRB operation, RT-2 host MAC/IP advertisement, RT-5 behavior, ARP/GARP learning scope.


                                  질문 # 40
                                  ......

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