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| Certification Vendor: | Juniper |
|---|---|
| Exam Name: | Data Center, Professional (JNCIP-DC) |
| Exam Number: | JN0-683 |
| Available Languages: | English |
| Exam Format: | Multiple-choice |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | 65 |
| Certificate Validity Period: | 3 years |
| Exam Price: | $400 USD |
| Passing Score: | Scaled (Approx. 650/1000) |
| Related Certifications: | Juniper Networks Certified Professional Data Center (JNCIP-DC) |
| Sample Questions: | Juniper JN0-683 Sample Questions |
| Exam Way: | Online-proctored or Pearson VUE testing center |
| Pre Condition: | JNCIS-DC (JN0-481) is recommended/preferred. |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/tracks/data-center/jncip-dc.html |
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NEW QUESTION # 105
Click the Exhibit Button. Which number of potential paths would traffic entering Leaf-A with a destination connected to Leaf-B have over the referenced IP fabric?
Answer: B
Explanation:
In a leaf-spine IP fabric, traffic between two leaves is typically load-balanced using ECMP across all available spine nodes that connect to both leaves. Since Leaf-A and Leaf-B are each connected to three spines, there are three equal-cost next hops available, resulting in three potential paths.
NEW QUESTION # 106
Exhibit.
You have implemented an EVPN-VXLAN data center. Device served must be able to communicate with device server2.
Referring to the exhibit, which two statements are correct? (Choose two.)
Answer: B,D
Explanation:
* Understanding the Exhibit Setup:
* The network diagram shows an EVPN-VXLAN setup, a common design for modern data centers enabling Layer 2 and Layer 3 services over an IP fabric.
* Leaf1 and Leaf2 are the leaf switches connected to Server1 and Server2, respectively, with each server in a different subnet (172.16.1.0/24 and 172.16.2.0/24).
* Spine1 and Spine2 are part of the IP fabric, interconnecting the leaf switches.
* EVPN-VXLAN Basics:
* EVPN (Ethernet VPN) provides Layer 2 and Layer 3 VPN services using MP-BGP.
* VXLAN (Virtual Extensible LAN) encapsulates Layer 2 frames into Layer 3 packets for transmission across an IP network.
* VTEP (VXLAN Tunnel Endpoint) interfaces on leaf devices handle VXLAN encapsulation and decapsulation.
* Integrated Routing and Bridging (IRB):
* IRB interfaces are required on leaf1 and leaf2 (where the endpoints are directly connected) to route between different subnets (in this case, between 172.16.1.0/24 and 172.16.2.0/24).
* The IRB interfaces provide the necessary L3 gateway functions for inter-subnet communication.
* Traffic Flow Analysis:
* Traffic from Server1 (172.16.1.1) destined for Server2 (172.16.2.1) must traverse from leaf1 to leaf2.
* The traffic will be VXLAN encapsulated on leaf1, sent over the IP fabric, and decapsulated on leaf2.
* Since the communication is between different subnets, the IRB interfaces on leaf1 and leaf2 are crucial for routing the traffic correctly.
* Correct Statements:
* C. An IRB Interface must be configured on leaf1 and leaf2:This is necessary to perform the inter-subnet routing for traffic between Server1 and Server2.
* D. Traffic from server1 to server2 will transit the VXLAN tunnel between leaf1 and leaf2:
This describes the correct VXLAN operation where the traffic is encapsulated by leaf1 and decapsulated by leaf2.
Data Center References:
* In EVPN-VXLAN architectures, the leaf switches often handle both Layer 2 switching and Layer 3 routing via IRB interfaces. This allows for efficient routing within the data center fabric without the need to involve the spine switches for every routing decision.
* The described traffic flow aligns with standard EVPN-VXLAN designs, where direct VXLAN tunnels between leaf switches enable seamless and scalable communication across a data center network.
NEW QUESTION # 107
Which parameter is used to associate a received route with a local VPN route table?
Answer: D
Explanation:
route-target community: The route-target community is used to associate a received route with a local VPN route table in an EVPN or MPLS VPN environment. It acts as an import and export policy for routes, ensuring that only the relevant routes are imported into a particular VRF (Virtual Routing and Forwarding instance) based on the matching route-target.
NEW QUESTION # 108
In an EVPN-VXLAN fabric, which statement describes the purpose of an EVPN Type 5 route?
Answer: B
Explanation:
EVPN Type 5 routes, also known as IP Prefix routes, are used to advertise Layer 3 reachability information for subnets or host routes across VXLAN domains. This allows inter-subnet routing between different VNIs or between data centers without requiring the destination MAC address to be known, which is especially useful for DCI scenarios and route summarization.
NEW QUESTION # 109
Exhibit.
Connections between hosts connected to Leaf-1 and Leaf-2 are not working correctly.
Answer: B,C
Explanation:
* Issue Analysis:
* The problem in the exhibit suggests a mismatch in configuration parameters between Leaf-1 and Leaf-2, leading to communication issues between hosts connected to these leaf devices.
* Configuration Mismatches:
* Service-ID:Leaf-1 has service-id 1 configured, while Leaf-2 does not have this parameter. For consistency and proper operation, the service-id should be the same across both leaf devices.
* VRF Target:Leaf-1 is configured with vrf-target target:65000:1, while Leaf-2 is configured with vrf-target target:65000:2. To allow proper VRF import/export between the two leafs, these should match.
* Corrective Actions:
* C. Configure the set switch-options vrf-target target:65000:1 parameter on Leaf-2:This aligns the VRF targets between the two leaf devices, ensuring they can correctly import and export routes.
* E. Configure the set switch-options service-id 1 parameter on Leaf-2:This ensures that both Leaf-1 and Leaf-2 use the same service ID, which is necessary for consistency in the EVPN- VXLAN setup.
Data Center References:
* Correct configuration of VRF targets and service IDs is critical in EVPN-VXLAN setups to ensure that routes and services are correctly shared and recognized between different devices in the network fabric.
NEW QUESTION # 110
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