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The Data Center, Professional (JNCIP-DC) (JN0-683) web-based practice test is compatible with these browsers: Chrome, Safari, Internet Explorer, MS Edge, Firefox, and Opera. This Data Center, Professional (JNCIP-DC) (JN0-683) practice exam does not require any software installation as it is web-based. It has similar specifications to the Juniper JN0-683 desktop-based practice exam software, but it requires an internet connection.

Juniper Data Center, Professional (JNCIP-DC) Sample Questions (Q33-Q38):

NEW QUESTION # 33
Exhibit.

You are troubleshooting a DCI connection to another data center The BGP session to the provider is established, but the session to Border-Leaf-2 is not established. Referring to the exhibit, which configuration change should be made to solve the problem?

A. delete protocols bgp group OVERLAY accept-remote-nexthop
B. delete protocols bgp group UNDERLAY advertise-external
C. set protocols bgp group PROVIDER export LOOPBACKS
D. set protocols bgp group overlay export loopbacks

Answer: A

Explanation:
* Understanding the Configuration:
* The exhibit shows a BGP configuration on a Border-Leaf device. The BGP group UNDERLAY is used for the underlay network, OVERLAY for EVPN signaling, and PROVIDER for connecting to the provider network.
* The OVERLAY group has the accept-remote-nexthop statement, which is designed to accept the next-hop address learned from the remote peer as is, without modifying it.
* Problem Identification:
* The BGP session to Border-Leaf-2 is not established. A common issue in EVPN-VXLAN environments is related to next-hop reachability, especially when accept-remote-nexthop is configured.
* In typical EVPN-VXLAN setups, the next-hop address should be reachable within the overlay network. However, the accept-remote-nexthop can cause issues if the next-hop IP address is not directly reachable or conflicts with the expected behavior in the overlay.
* Corrective Action:
* D. delete protocols bgp group OVERLAY accept-remote-nexthop:Removing this command will ensure that the device uses its own IP address as the next-hop in BGP advertisements, which is standard practice in many EVPN-VXLAN setups. This change should help establish the BGP session with Border-Leaf-2.
Data Center References:
* Proper handling of BGP next-hop attributes is critical in establishing and maintaining stable BGP sessions, especially in complex multi-fabric environments like EVPN-VXLAN. Removing accept- remote-nexthop aligns with best practices in many scenarios.

NEW QUESTION # 34
Exhibit.

Given the configuration shown in the exhibit, why has the next hop remained the same for the EVPN routes advertised to the peer 203.0.113.2?

A. EVPN routes cannot have the next hop changed.
B. The vpn-apply-export parameter must be applied to this peer.
C. The export policy is incorrectly configured.
D. The vrf-export parameter must be applied.

Answer: B

Explanation:
* Understanding the Configuration:
* The configuration shown in the exhibit involves an EVPN (Ethernet VPN) setup using BGP as the routing protocol. The export policy named CHANGE_NH is applied to the BGP group evpn- peer, which includes a rule to change the next hop for routes that match the policy.
* Issue with Next Hop Not Changing:
* The policy CHANGE_NH is correctly configured to change the next hop to 203.0.113.10 for the matching routes. However, the next hop remains unchanged when advertising EVPN routes to the peer 203.0.113.2.
* Reason for the Issue:
* In Junos OS, when exporting routes for VPNs (including EVPN), the next-hop change defined in a policy will not take effect unless the vpn-apply-export parameter is used inthe BGP configuration. This parameter ensures that the export policy is applied specifically to VPN routes.
* The vpn-apply-export parameter must be included to apply the next-hop change to EVPN routes.
* Correct Answer Explanation:
* D. The vpn-apply-export parameter must be applied to this peer:This is the correct solution because the next hop in EVPN routes won't be altered without this parameter in the BGP configuration. It instructs the BGP process to apply the export policy to the EVPN routes.
Data Center References:
* This behavior is standard in EVPN deployments with Juniper Networks devices, where the export policies applied to VPN routes require explicit invocation using vpn-apply-export to take effect.

NEW QUESTION # 35
You are deploying an IP fabric with an oversubscription ratio of 3:1.
In this scenario, which two statements are correct? (Choose two.)

A. The oversubscription ratio remains the same when you remove leaf devices.
B. The oversubscription ratio decreases when you add leaf devices.
C. The oversubscription ratio increases when you remove leaf devices.
D. The oversubscription ratio remains the same when you add leaf devices.

Answer: C,D

Explanation:
* Understanding Oversubscription Ratio in IP Fabrics:
* The oversubscription ratio in an IP fabric typically refers to the ratio of the available bandwidth at the edge of the network (leaves) to the available bandwidth at the core or spine. A 3:1 oversubscription ratio means that for every 3 units of bandwidth at the leaves, there is 1 unit of bandwidth at the spine.
* Impact of Adding or Removing Leaf Devices:
* Removing Leaf Devices:When you remove leaf devices, the amount of total edge bandwidth decreases while the bandwidth in the spine remains constant. This causes the oversubscription ratio toincreasebecause there is now less total bandwidth to distribute across the same amount of spine bandwidth.
* Adding Leaf Devices:Conversely, when you add leaf devices, the total edge bandwidth increases. Since the spine bandwidth remains the same, the oversubscription ratio would remain the same if the additional leaves consume their share of the available bandwidth proportionally.
Conclusion:
* Option C:Correct-Removing leaf devices increases the oversubscription ratio.
* Option D:Correct-Adding leaf devices typically maintains the oversubscription ratio assuming uniform bandwidth distribution.

NEW QUESTION # 36
Exhibit.

Referring to the exhibit, which statement Is true?

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

Answer: B

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 # 37
You are asked to interconnect two of your company's data centers across the IP backbone. Both data centers have their own unique IP space and do not require any bridging. In this scenario, which two actions would accomplish this task? (Choose two.)

A. Configure a Type 2 EVPN route for each unique prefix.
B. Configure peering for EVPN between border leaf nodes in each data center.
C. Configure peering for EVPN between all leaf nodes within each data center.
D. Configure a Type 5 EVPN route for each unique prefix.

Answer: B,D

Explanation:
* Interconnecting Data Centers:
* The scenario requires interconnecting two data centers with unique IP spaces across an IP backbone. The key point is that bridging is not required, so Layer 3 routing methods must be used.
* EVPN Configuration:
* Option B:Establishing EVPN peering between the border leaf nodes in each data center is the most appropriate solution as it allows for exchanging routing information between the two data centers. This ensures that the routes are properly distributed without the need for L2 bridging.
* Option C:Configuring Type 5 EVPN routes is necessary for advertising IP prefixes (Layer 3 routes) across the EVPN. Type 5 routes allow for the exchange of IP prefixes between the two data centers, enabling the necessary routing functionality without the need for bridging.
Conclusion:
* Option B:Correct-Peering between border leaf nodes sets up the necessary route exchange between data centers.
* Option C:Correct-Type 5 EVPN routes are essential for exchanging Layer 3 prefixes between data centers.

NEW QUESTION # 38
......

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JN0-683 Latest Exam Review | JN0-683 Trustworthy Practice

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Juniper Data Center, Professional (JNCIP-DC) Sample Questions (Q33-Q38):

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