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Juniper JN0-683 Exam Syllabus Topics:

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

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Juniper Data Center, Professional (JNCIP-DC) Sample Questions (Q50-Q55):

NEW QUESTION # 50
Click the Exhibit button. Both DC and DC2 are using EVPN-VXLAN technology deployed using an ERB architecture. A server on the Red VLAN must communicate with a server on the Green VLAN. The Blue VLAN in DC and DC2 needs to be the same VLAN.
Which statement is correct?

Answer: B

Explanation:
In an EVPN-VXLAN ERB (Edge Routed Bridging) architecture, Layer 2 VLANs can be stretched across data centers using VXLAN, while Layer 3 communication between different VLANs requires routing at the edge. Since the Blue VLAN must remain the same across DC and DC2, it must be stretched using VXLAN. However, inter-VLAN communication (between the Red and Green VLANs) requires Layer 3 routing, which is typically handled by a services block, such as the SRX Series chassis cluster shown in the diagram.
To enable inter-VLAN communication, a transit VNI (VXLAN Network Identifier) must be introduced, allowing the Red and Green VLANs to communicate across the two data centers. The interconnect between the SRX Series devices ensures that Layer 3 routing can be performed while maintaining VXLAN encapsulation between the two sites.


NEW QUESTION # 51
Click the Exhibit button.

You are reviewing a configuration for an EVPN VLAN-bundle service. The configuration commits successfully, but the hosts connected to the MAC-VRF do not communicate correctly.
Referring to the exhibit, which two actions should you take to solve the problem? (Choose two.)

Answer: A,D

Explanation:
An EVPN VLAN-bundle service requires the routing instance service type to be set to VLAN- bundle so multiple VLANs can be mapped into a single bundled service. VLAN-bundle is a Layer
2 EVPN service and is not meant to have an IRB attached inside the MAC-VRF, so the IRB interface association must be removed to restore correct host-to-host bridging behavior.


NEW QUESTION # 52
You are implementing VXLAN broadcast domains in your data center environment. Which two statements are correct in this scenario? (Choose two.)

Answer: B,C

Explanation:
Layer 2 frames are encapsulated by the source VTEP: In a VXLAN environment, Layer 2 frames (Ethernet frames) are encapsulated by the source VTEP (VXLAN Tunnel Endpoint) into VXLAN packets. The VTEP adds a VXLAN header to the original Layer 2 frame and forwards the encapsulated packet over the IP network to the destination VTEP.
A VXLAN packet does not contain a VLAN ID: VXLAN operates at Layer 2 and encapsulates Ethernet frames within a VXLAN header, but it does not carry a traditional VLAN ID as part of the encapsulated packet. Instead, it uses a VXLAN Network Identifier (VNI) to identify the broadcast domain.


NEW QUESTION # 53
Which parameter is used to associate a received route with a local VPN route table?

Answer: B

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 # 54
Which statement is correct about MAC mobility in an EVPN-VXLAN environment?

Answer: D

Explanation:
When a host moves from one VTEP to another, the newly attached VTEP advertises an updated EVPN Type 2 route containing a MAC Mobility extended community with an incremented sequence number. This allows other VTEPs in the fabric to recognize that the host has moved and update their forwarding tables accordingly, preventing stale MAC-to-VTEP mappings and MAC flapping.


NEW QUESTION # 55
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