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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Layer 3 Fabrics | 20% | - Fabric scaling and high availability - IP fabric architecture and design - Routing protocols in IP fabrics |
| Topic 2: Data Center Deployment and Management | 20% | - Zero Touch Provisioning (ZTP) - Configuration management and automation - Software upgrades and management |
| Topic 3: Data Center Interconnect | 15% | - EVPN-VXLAN based DCI - Layer 2 and Layer 3 interconnect - Inter-fabric stitching |
| Topic 4: EVPN-VXLAN Signaling | 20% | - EVPN concepts and route types - MBGP for EVPN - MAC learning and symmetric routing - CRB and ERB architectures |
| Topic 5: Data Center Architecture and Security | 5% | - Security features in data center networks - Traffic protection and segmentation |
| Topic 6: VXLAN | 20% | - VXLAN control plane and data plane operation - VXLAN configuration and monitoring - VXLAN troubleshooting |
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NEW QUESTION # 74
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.)
Answer: A,B,E
Explanation:
* 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
NEW QUESTION # 75
You are asked to configure active probes to track and monitor reachability across the network and investigate network issues. In this scenario, which feature would accomplish this task?
Answer: B
Explanation:
RPM (Real-Time Performance Monitoring) uses active probes such as ICMP or UDP to measure reachability, latency, jitter, and packet loss across the network. It actively generates test traffic, making it suitable for tracking connectivity and troubleshooting network performance issues.
NEW QUESTION # 76
You are deploying an IP fabric with an oversubscription ratio of 3:1.
In this scenario, which two statements are correct? (Choose two.)
Answer: B,D
Explanation:
Adding leaf devices increases the edge bandwidth (workload-facing ports), which lowers the oversubscription ratio because the amount of bandwidth facing the workloads increases relative to the fabric bandwidth.
However, the oversubscription ratio itself remains the same when you add leaf devices if the fabric design and spine capacity remain unchanged because the ratio is a function of edge bandwidth to spine bandwidth. Adding leaf devices without changing spine devices keeps the ratio at the same level.
Removing leaf devices would increase the oversubscription ratio because the amount of edge bandwidth decreases while spine bandwidth remains the same.
NEW QUESTION # 77
Which two statements are true about EVPN routes for Data Center Interconnect? (Choose two.)
Answer: A,D
Explanation:
* Type 2 EVPN Routes:
* Type 2 routesadvertise MAC addresses within an EVPN instance and are used primarily for Layer 2 bridging. These routes do not require a VXLAN tunnel to the protocol next hop because they operate within the same Layer 2 domain.
* Type 5 EVPN Routes:
* Type 5 routesare used to advertise IP prefixes (Layer 3 routes) within EVPN. Similar to Type 2 routes, they do not require a VXLAN tunnel to the protocol next hop because they represent L3 routes, which are managed at the routing layer without the need for VXLAN encapsulation.
Conclusion:
* Option B:Correct-Type 2 routes do not need a VXLAN tunnel to the next hop, as they are used for Layer 2.
* Option D:Correct-Type 5 routes also do not need a VXLAN tunnel because they operate at Layer 3, handling IP prefixes.
NEW QUESTION # 78
Why is a designated forwarder required in a multihomed CE-to-PE VXLAN environment using EVPN signalling?
Answer: C
Explanation:
The designated forwarder is required to prevent duplicate packets from being received on multihomed hosts: In a multihomed CE-to-PE VXLAN environment using EVPN signaling, a host may be connected to more than one PE. Without a designated forwarder, both PEs could forward the same broadcast, multicast, or unicast traffic to the multihomed host, leading to duplicate packets. The designated forwarder ensures that only one PE forwards traffic to the host, preventing this issue.
NEW QUESTION # 79
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