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NEW QUESTION # 46
What are two supported methods for exporting data when using the Junos telemetry interface?
(Choose two.)
Answer: A,C
Explanation:
The Junos Telemetry Interface (JTI) supports streaming real-time data from devices using modern, efficient protocols:
using UDP
JTI supports UDP-based streaming, often with Juniper's JTIs streaming protocol (for low-latency telemetry).
using gRPC
JTI supports gRPC/gNMI for structured, reliable telemetry export.
NEW QUESTION # 47
You are deploying an EVPN-VXLAN overlay. You must ensure that Layer 3 routing happens on the spine devices. In this scenario, which deployment architecture should you use?
Answer: A
Explanation:
* Understanding EVPN-VXLAN Architectures:
* EVPN-VXLAN overlays allow for scalable Layer 2 and Layer 3 services in modern data centers.
* CRB (Centralized Routing and Bridging):In this architecture, the Layer 3 routing is centralized on spine devices, while the leaf devices focus on Layer 2 switching and VXLAN tunneling. This setup is optimal when the goal is to centralize routing for ease of management and to avoid complex routing at the leaf level.
* ERB (Edge Routing and Bridging):This architecture places routing functions on the leaf devices, making it a distributed model where each leaf handles routing for its connected hosts.
* Architecture Choice for Spine Routing:
* Given the requirement to ensure Layer 3 routing happens on the spine devices, theCRB (Centralized Routing and Bridging)architecture is the correct choice. This configuration offloads routing tasks to the spine, centralizing control and potentially simplifying the overall design.
* Explanation:
* With CRB, the spine devices perform all routing between VXLAN segments. Leaf switches handle local switching and VXLAN encapsulation, but routing decisions are centralized at the spine level.
* This model is particularly advantageous in scenarios where centralized management and routing control are desired, reducing the complexity and configuration burden on the leaf switches.
Data Center References:
* The CRB architecture is commonly used in data centers where centralized control and simplified management are key design considerations. It allows the spines to act as the primary routing engines, ensuring that routing is handled in a consistent and scalable manner across the fabric.
NEW QUESTION # 48
You are deploying a Clos IP fabric with an oversubscription ratio of 3:1.
In this scenario, which two statements are correct? (Choose two.)
Answer: A,C
Explanation:
* Understanding Oversubscription in a Clos Fabric:
* The oversubscription ratio in a Clos IP fabric measures the ratio of the amount of edge (leaf) bandwidth to the core (spine) bandwidth. An oversubscription ratio of 3:1 means that there is three times more edge bandwidth compared to core bandwidth.
* Impact of Adding/Removing Spine Devices:
* Option C:If youremove spine devices, the total available core bandwidth decreases, while the edge bandwidth remains the same. This results in anincrease in the oversubscription ratio because there is now less core bandwidth to handle the same amount of edge traffic.
* Option B:Conversely, if youadd spine devices, the total core bandwidth increases. This decreases the oversubscription ratio because more core bandwidth is available to handle the edge traffic.
Conclusion:
* Option C:Correct-Removing spine devices increases the oversubscription ratio.
* Option B:Correct-Adding spine devices decreases the oversubscription ratio.
NEW QUESTION # 49
You are asked to interconnect Iwo data centers using a method that provides EVPN Type 2 connectivity, is highly scalable, and limits VXLAN tunnels between border leafdevices. What will satisfy these requirements?
Answer: C
Explanation:
* Requirement Analysis:
* The scenario requires a solution to interconnect two data centers that supports EVPN Type 2 connectivity. The solution must be highly scalable and must minimize the number of VXLAN tunnels between border leaf devices.
* Understanding Type 2 Seamless Stitching:
* Option D:Type 2 seamless stitchingis a method used in EVPN to provide Layer 2 connectivity (such as MAC address mobility) across different VXLAN segments. It is scalable because it allows only necessary tunnels to be established between border leaf devices, reducing the overhead of maintaining a full mesh of VXLAN tunnels.
Conclusion:
* Option D:Correct-Type 2 seamless stitching satisfies the requirement by enabling scalable, efficient interconnection of two data centers with minimal VXLAN tunnels.
NEW QUESTION # 50
Exhibit.
Referring to the exhibit, when Host A sends an ARP request for Host B's IP address, which Junos feature does leaf1 require to send an ARP response back to Host A without having to send a broadcast frame over the fabric?
Answer: A
Explanation:
* Scenario Overview:
* In the exhibit, Host A is trying to resolve Host B's IP address (10.10.1.2) through ARP (Address Resolution Protocol). Normally, an ARP request would be broadcasted over the network, and the host owning the IP address (Host B) would respond.
* Role of Proxy ARP:
* Option A:Proxy ARPallows a router or switch (in this case, leaf1) to respond to ARP requests on behalf of another host. Leaf1, knowing the MAC address of Host B through the EVPN MAC advertisement, can reply to Host A's ARP request directly without broadcasting the request across the entire network fabric. This feature reduces unnecessary traffic and increases network efficiency.
Conclusion:
* Option A:Correct-Proxy ARP enables leaf1 to respond to Host A's ARP request for Host B's IP without broadcasting over the IP fabric, thus providing the ARP response locally.
NEW QUESTION # 51
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