New JN0-683 Test Prep & Updated JN0-683 CBT

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Juniper JN0-683 Exam Syllabus Topics:

Topic	Details
Topic 1	Data Center Interconnect: For Data Center Engineers, this part focuses on interconnecting data centers, covering Layer 2 and Layer 3 stretching, stitching fabrics together, and using EVPN-signaled VXLAN for seamless communication between data centers.
Topic 2	VXLAN: This part requires knowledge of VXLAN, particularly how the control plane manages communication between devices, while the data plane handles traffic flow. Demonstrate knowledge of how to configure, Monitor, or Troubleshoot VXLAN.
Topic 3	EVPN-VXLAN Signaling: This section assesses an understanding of Ethernet VPN (EVPN) concepts, including route types, multicast handling, and Multiprotocol BGP (MBGP). It also covers EVPN architectures like CRB and ERB, MAC learning, and symmetric routing.
Topic 4	Data Center Deployment and Management: This section assesses the expertise of data center networking professionals like architects and engineers, focusing on key deployment concepts. Topics include Zero-touch provisioning (ZTP), which automates device setup in data centers without manual input.
Topic 5	Data Center Multitenancy and Security: This section tests knowledge of single-tenant and multitenant data center setups. Candidates such as Data Center Professionals are evaluated on ensuring tenant traffic isolation at both Layer 2 and Layer 3 levels in shared infrastructure environments.

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2025 New JN0-683 Test Prep - Latest Juniper Updated JN0-683 CBT: Data Center, Professional (JNCIP-DC)

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Juniper Data Center, Professional (JNCIP-DC) Sample Questions (Q21-Q26):

NEW QUESTION # 21
You are asked to build redundant gateways in your EVPN-VXLAN environment, but you must conserve address space because these gateways must span across seven PES. What should you implement on the PEs lo satisfy these requirements?

A. Use IRB interfaces with different IP addresses and the same VGA.
B. Use IRB interfaces with the same IP and MAC address.
C. Use IRB interfaces with the same IP and VGA.
D. Use IRB interfaces with the same IP address and different MAC addresses.

Answer: B

Explanation:
* Redundant Gateways in EVPN-VXLAN:
* In an EVPN-VXLAN environment, providing redundant gateway functionality typically involves the use of Anycast Gateway. This allows multiple PEs (Provider Edge devices) to use the same IP address and MAC address for the gateway, enabling seamless failover and redundancy without IP conflicts.
* Conserving Address Space:
* Using the same IP address across multiple PEs conserves address space because only one IP address is needed for the gateway function, regardless of the number of PEs. The shared MAC address ensures that ARP resolution and forwarding behavior are consistent across all the PEs.
Conclusion:
* Option C:Correct-Using IRB interfaces with the same IP and MAC address across all PEs satisfies the need for redundancy while conserving address space.
OptionsA, B,andDintroduce unnecessary complexity or do not fully utilize the efficient Anycast Gateway approach, which is best practice for conserving IP space and providing redundancy.

NEW QUESTION # 22
Exhibit.

You are deploying a VXLAN overlay with EVPN as the control plane in an ERB architecture.
Referring to the exhibit, which three statements are correct about where the VXLAN gateways will be placed?
(Choose three.)

A. Only the border and leaf devices will have L3 VXLAN gateways.
B. All leaf devices will have L2 VXLAN gateways.
C. Spine devices will have no VXLAN gateways.
D. All leaf devices will have L3 VXLAN gateways.
E. Only the spine devices will have L2 VXLAN gateways.

Answer: B,C,D

Explanation:
* Understanding ERB Architecture:
* ERB (Edge Routed Bridging) architecture is a network design where the routing occurs at the edge (leaf devices) rather than in the spine devices. In a VXLAN overlay network with EVPN as the control plane, leaf devices typically act as both Layer 2 (L2) and Layer 3 (L3) VXLAN gateways.
* Placement of VXLAN Gateways:
* Option B:All leaf devices will have L2 VXLAN gateways to handle the bridging of VLAN traffic into VXLAN tunnels.
* Option C:All leaf devices will also have L3 VXLAN gateways to route traffic between different VXLAN segments (VNIs) and external networks.
* Option E:Spine devices in an ERB architecture generally do not function as VXLAN gateways.
They primarily focus on forwarding traffic between leaf nodes and do not handle VXLAN encapsulation/decapsulation.
Conclusion:
* Option B:Correct-All leaf devices will have L2 VXLAN gateways.
* Option C:Correct-All leaf devices will have L3 VXLAN gateways.
* Option E:Correct-Spine devices will not act as VXLAN gateways

NEW QUESTION # 23
Your organization is implementing EVPN-VXLAN and requires multiple overlapping VLAN-IDs. You decide to use a routing-instance type mac-vrf to satisfy this request.
Which two statements are correct in this scenario? (Choose two.)

A. Host-facing interfaces must be configured using a service-provider style configuration.
B. Spine-facing interfaces must be configured using an enterprise-styleconfiguration.
C. The routing-instance service type can be VLAN-based.
D. Host-facing interfaces must be configured using enterprise-style configuration.

Answer: A,C

Explanation:
* Understanding the Scenario:
* EVPN-VXLAN deployments often involve scenarios where multiple tenants or applications require overlapping VLAN IDs, which can be managed using the mac-vrf routing instance type.
This allows you to segregate traffic within the same VLAN ID across different tenants.
* Host-facing Interface Configuration:
* A. Host-facing interfaces must be configured using a service-provider style configuration:
This is correct. In mac-vrf configurations, host-facing interfaces (those connecting end devices) typically follow a service-provider style configuration, where each customer or tenant's traffic is isolated even if overlapping VLAN IDs are used.
* B. Host-facing interfaces must be configured using enterprise-style configuration:This is incorrect for mac-vrf instances because enterprise-style configurations are more common in simpler, less segmented networks.
* Routing Instance Service Type:
* D. The routing-instance service type can be VLAN-based:This is correct. The service type in mac-vrf can indeed be VLAN-based, which is particularly useful in scenarios where VLAN ID overlap is needed between different tenants or services.
Data Center References:
* The mac-vrf instance type is powerful for handling complex multi-tenant environments in EVPN- VXLAN, especially when dealing with overlapping VLAN IDs across different segments of the network.

NEW QUESTION # 24
Exhibit.

Both DC and DC2 ate 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 in this scenario?

A. An interconnect is required between four leaf devices in the services blocks; the Red VLAN and the Green VLAN must be stitched and the Blue VLAN must be stretched.
B. The eight spine devices must be configured as border spine devices; a full mush interconnect must exist between all eight spine devices and the Blue VLAN must be stitched together
C. A lean super spine device must be added to DC and DC2; all VLANs must be stretched to the lean super spine device and the lean super spine devices must stitch all the VLANs together.
D. An interconnect is required between the four SRX Series devices; the Blue VLAN must be stretched and a transit VNI must be added for the Red and Green VLANs.

Answer: D

Explanation:
* ERB Architecture in EVPN-VXLAN:
* ERB (Edge Routed Bridging) architecture is commonly used in data center networks where routing decisions are made at the network edge (leaf or border devices), while bridging (Layer 2 forwarding) is extended across the fabric. This architecture allows for efficient L3 routing while still enabling L2 services like VLANs to span across multiple locations.
* VLAN and VNI Configuration:
* The scenario specifies that a server on the Red VLAN needs to communicate with a server on the Green VLAN. Since these VLANs are in different data centers (DC and DC2), and given the use of EVPN-VXLAN, the communication between these VLANs will require atransit VNI(Virtual Network Identifier). This transit VNI will allow traffic to traverse the VXLAN tunnel across the DCI (Data Center Interconnect).
* Interconnect between SRX Series Devices:
* The exhibit shows SRX Series Chassis Clusters used as service devices (likely for firewalling or other security services). These devices need to be interconnected between the two data centers to ensure that VLANs can communicate effectively. The Blue VLAN needs to be stretched between DC and DC2 to maintain the same Layer 2 domain across both data centers.
Conclusion:
* Option B:Correct-Interconnecting the SRX Series devices will ensure the necessary service chaining, while stretching the Blue VLAN and adding a transit VNI for the Red and Green VLANs will enable the required communication across the data centers.

NEW QUESTION # 25
Exhibit.

Referring to the exhibit, which statement Is true?

A. A CRB architecture is being used.
B. A PBB-EVPN architecture is being used.
C. An ERB architecture is being used.
D. An OTT architecture is being used.

Answer: C

Explanation:
* Understanding Network Architectures:
* ERB (Edge Routed Bridging) architecture involves routing at the network's edge (leaf nodes), while traffic between leaf nodes is switched. This is commonly used in VXLAN-EVPN setups.
* Analysis of the Exhibit:
* The exhibit shows configurations related to routing instances, VXLAN, and VLANs, with VNIs being used for each VLAN. This setup is characteristic of an ERB architecture where each leaf device handles Layer 3 routing for its connected devices.
Conclusion:
* Option B:Correct-The configuration shown corresponds to an ERB architecture where routing occurs at the network's edge (leaf devices).

NEW QUESTION # 26
......

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NEW JN0-683 TEST PREP & UPDATED JN0-683 CBT

New JN0-683 Test Prep & Updated JN0-683 CBT