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Juniper JN0-683 Exam Syllabus Topics:

SectionObjectives
Data Center Interconnect- DCI Concepts
  • 1. EVPN-signaled VXLAN for DCI
  • 2. Interconnect network types
  • 3. Stitching
  • 4. Layer 2 and Layer 3 stretch
- Configuration and Troubleshooting
  • 1. Configuring, monitoring, or troubleshooting DCI
Layer 3 Fabrics- IP Fabric Concepts
  • 1. IP fabric routing
  • 2. IP fabric Class of Service (RDMA/RoCE)
  • 3. IP fabric scaling
  • 4. IP fabric best practices
  • 5. IP fabric architecture
- Configuration and Troubleshooting
  • 1. Configuring, monitoring, or troubleshooting an IP fabric
VXLAN- VXLAN Concepts
  • 1. VXLAN control planes
  • 2. Data plane
- Configuration and Troubleshooting
  • 1. Configuring, monitoring, or troubleshooting VXLAN
Data Center Multitenancy and Security- Architectures
  • 1. Single tenant and multitenant architectures
  • 2. Multitenancy (for example, routing instances)
  • 3. Tenant traffic isolation (Layer 3 or Layer 2)
- Security Concepts
  • 1. Filter-based forwarding
  • 2. Group-based policy (GBP)
EVPN-VXLAN Signaling- Configuration and Troubleshooting
  • 1. Configuring, monitoring, or troubleshooting EVPNs
- EVPN Concepts
  • 1. MAC learning
  • 2. Multiprotocol BGP (MBGP)
  • 3. EVPN architectures (CRB and ERB)
  • 4. Route types
  • 5. Symmetric routing
  • 6. EVPN multicast
Data Center Deployment and Management- Data Center Deployment Concepts
  • 1. Dynamic Host Configuration Protocol (DHCP)
  • 2. Zero-touch provisioning (ZTP)
- Data Center Management Concepts
  • 1. Monitoring
  • 2. Analytics (telemetry)

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最新的 JNCIP-DC JN0-683 免費考試真題 (Q30-Q35):

問題 #30
Exhibit.

Connections between hosts connected to Leaf-1 and Leaf-2 are not working correctly.
Referring to the exhibit, which two configuration changes are required to solve the problem? (Choose two.)

答案：B,C

解題說明：
* Review of the Exhibit:
* The exhibit shows the switch configuration for Leaf-1 and Leaf-2. The configurations include route distinguishers, VRF targets, and service IDs, all of which are crucial for ensuring proper operation in an EVPN-VXLAN environment.
* Service-ID Consistency:
* The service ID must be consistent across all participating leaf devices in the same EVPN instance to ensure that they are part of the same VXLAN overlay network.
* VRF Target Consistency:
* The vrf-target parameter must also be consistent across devices to ensure that VRFs (Virtual Routing and Forwarding instances) are correctly imported and exported between leaf nodes.
Conclusion:
* Option B:Correct-Setting the same service-id on Leaf-2 ensures that it is part of the same VXLAN overlay as Leaf-1.
* Option D:Correct-The vrf-target on Leaf-2 should match Leaf-1 to ensure consistent routing policies and proper route exchange.


問題 #31
In your EVPN-VXAN environment, you want to prevent a multihomed server from receiving multiple copies ofBUM traffic in active/active scenarios. Which EVPN route type would satisfy this requirement?

答案：D

解題說明：
* Understanding the Scenario:
* In an EVPN-VXLAN environment, when using multi-homing in active/active scenarios, there's a risk that a multihomed server might receive duplicate copies of Broadcast, Unknown unicast, and Multicast (BUM) traffic. This is because multiple VTEPs might forward the same BUM traffic to the server.
* EVPN Route Types:
* Type 4 Route (Ethernet Segment Route):This route type is used to advertise the Ethernet Segment (ES) to which the device is connected. It is specifically used in multi-homing scenarios to signal the ES and its associated Ethernet Tag to all the remote VTEPs. The Type 4 route includes information that helps prevent BUM traffic duplication in active/active multi-homing by using a split-horizon mechanism, which ensures that traffic sent to a multihomed device does not get looped back.
* Explanation:
* The Type 4 route is crucial for ensuring that in a multi-homed setup, particularly in an active
/active configuration, BUM traffic does not result in duplication at the server. The route helps coordinate which VTEP is responsible for forwarding the BUM traffic to the server, thereby preventing duplicate traffic.
Data Center References:
* Type 4 routes are essential for managing multi-homing in EVPN to avoid the issues of BUM traffic duplication, which could otherwise lead to inefficiencies and potential network issues.


問題 #32
Exhibit.

You are troubleshooting an IP fabric (or your data center. You notice that your traffic is not being load balanced to your spine devices from your leaf devices. Referring to the configuration shown in the exhibit, what must be configured to solve this issue?

答案：B

解題說明：
* IP Fabric Load Balancing:
* In the provided configuration, traffic is not being load-balanced to the spine devices. The issue likely relates to how BGP routes are being selected and whether Equal-Cost Multi-Path (ECMP) is functioning correctly.
* Multipath Multiple-AS:
* Option B:The multipath multiple-as configuration is essential when using BGP in an IP fabric where devices belong to different Autonomous Systems (AS). This setting allows BGP to consider multiple paths (even across different AS numbers) as equal cost, enabling ECMP and proper load balancing across spine devices.
Conclusion:
* Option B:Correct-The multipath multiple-as configuration is necessary for achieving ECMP and effective load balancing in a multi-AS BGP environment.


問題 #33
You want to convert an MX Series router from a VXLAN Layer 2 gateway to a VXLAN Layer 3 gateway for VNI 100. You have already configured an IRB interface. In this scenario, which command would you use to accomplish this task?

答案：A


問題 #34
Which protocol permits the highest level of scalability for an IP underlay fabric?

答案：B

解題說明：
EBGP provides high scalability in IP underlay fabrics by supporting large-scale route distribution with strong policy control and loop prevention through AS path mechanisms. It enables scalable ECMP, efficient route advertisement, and operational isolation between nodes, making it well suited for large data center spine-leaf architectures.


問題 #35
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