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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Center Deployment and Management | 20% | - Zero Touch Provisioning (ZTP) - Configuration management and automation - Software upgrades and management |
| Topic 2: VXLAN | 20% | - VXLAN configuration and monitoring - VXLAN troubleshooting - VXLAN control plane and data plane operation |
| Topic 3: Layer 3 Fabrics | 20% | - IP fabric architecture and design - Routing protocols in IP fabrics - Fabric scaling and high availability |
| Topic 4: Data Center Architecture and Security | 5% | - Traffic protection and segmentation - Security features in data center networks |
| Topic 5: EVPN-VXLAN Signaling | 20% | - MBGP for EVPN - MAC learning and symmetric routing - CRB and ERB architectures - EVPN concepts and route types |
| Topic 6: Data Center Interconnect | 15% | - Layer 2 and Layer 3 interconnect - EVPN-VXLAN based DCI - Inter-fabric stitching |
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NEW QUESTION # 90
You are deploying an IP fabric using EBGP and notice that your leaf devices are advertising and receiving all the routes. However, the routes are not installed in the routing table and are marked as hidden.
Which two statements describe how to solve the issue? (Choose two.)
Answer: B,D
NEW QUESTION # 91
Which three statements are correct about VXLAN control planes? (Choose three.)
Answer: B,C,E
Explanation:
EVPN enables fast convergence and updates: EVPN (Ethernet VPN) provides a more scalable and efficient control plane for VXLAN, enabling fast convergence and quicker updates for network changes. This is achieved through the use of BGP (Border Gateway Protocol) as the control plane protocol, which allows for efficient distribution of MAC and IP address information.
Both multicast and EVPN can facilitate MAC learning: Both multicast and EVPN can handle MAC address learning in a VXLAN environment. In multicast-based VXLAN, MAC addresses are learned and distributed via multicast control messages, whereas in EVPN, MAC addresses are distributed via BGP advertisements, which are more efficient and scalable.
Multicast does not require as many resources: Multicast-based VXLAN control planes use standard multicast protocols like PIM (Protocol Independent Multicast) to forward traffic across the VXLAN fabric. While multicast has resource requirements for managing multicast groups, it does not require the same level of control-plane processing as EVPN, which uses BGP to handle MAC address advertisements. However, multicast can be less agile and may require additional configuration.
NEW QUESTION # 92
Your organization is implementing EVPN-VXLAN and requires multiple overlapping VLAN-IDs.
You decide to use a routing-instance type mac-vrfto satisfy this request.
Which two statements are correct in this scenario? (Choose two.)
Answer: A,B
Explanation:
Host-facing interfaces must be configured using a service-provider style configuration When using MAC-VRF routing instances to support overlapping VLAN IDs, host-facing interfaces need service-provider style (unit with VLAN tagging inside a logical interface). This allows the same VLAN ID to exist in multiple VRFs without conflict.
The routing-instance service type can be VLAN-based
MAC-VRF instances can be VLAN-based, which maps a VLAN to the routing instance for L2 segregation.
NEW QUESTION # 93
You are asked to implement VXLAN group-based policies (GBPs) in your data center. Which two statements are correct in (his scenario? (Choose two.)
Answer: B,D
Explanation:
VXLAN GBP ensures consistent application of security group policies throughout the network: VXLAN Group-Based Policies (GBP) allow for the consistent application of policies related to security groups, network access, and traffic control across all devices in the VXLAN fabric. This helps ensure that security policies are applied consistently based on group membership rather than relying solely on IP subnets or VLANs.
VXLAN GBP uses scalable group tags that may be configured on a RADIUS server and pushed to the switch through 802.1X: In VXLAN GBP, scalable group tags (SGTs) are used to identify group memberships. These tags can be configured on a RADIUS server and pushed to the switch using 802.1X authentication, which dynamically applies group-based policies based on user or device attributes.
NEW QUESTION # 94
You are deploying an IP fabric with an oversubscription ratio of 3:1.
In this scenario, which two statements are correct? (Choose two.)
Answer: A,B
Explanation:
* Understanding Oversubscription Ratio in IP Fabrics:
* The oversubscription ratio in an IP fabric typically refers to the ratio of the available bandwidth at the edge of the network (leaves) to the available bandwidth at the core or spine. A 3:1 oversubscription ratio means that for every 3 units of bandwidth at the leaves, there is 1 unit of bandwidth at the spine.
* Impact of Adding or Removing Leaf Devices:
* Removing Leaf Devices:When you remove leaf devices, the amount of total edge bandwidth decreases while the bandwidth in the spine remains constant. This causes the oversubscription ratio toincreasebecause there is now less total bandwidth to distribute across the same amount of spine bandwidth.
* Adding Leaf Devices:Conversely, when you add leaf devices, the total edge bandwidth increases. Since the spine bandwidth remains the same, the oversubscription ratio would remain the same if the additional leaves consume their share of the available bandwidth proportionally.
Conclusion:
* Option C:Correct-Removing leaf devices increases the oversubscription ratio.
* Option D:Correct-Adding leaf devices typically maintains the oversubscription ratio assuming uniform bandwidth distribution.
NEW QUESTION # 95
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