A service provider is building a large IP fabric with hundreds of leaf switches. They plan to run BGP as the underlay routing protocol. To minimize the number of BGP sessions in the control plane, which design should they implement?

eBGP with each leaf peering to each spine as a separate autonomous system.

OSPF with all switches in a single area.

Full mesh of iBGP sessions between all leaf and spine switches.

iBGP with spine switches configured as route reflectors.

A network operator notices that traffic between two leaf switches is consistently using only one of the four equal-cost paths. The underlay is BGP-based and all links are up. Which operational step should they take to troubleshoot this issue?

Verify that the BGP next hops are reachable and that ECMP is enabled on the forwarding table.

Increase the BGP hold timer on all switches.

Reboot the spine switches to reset the forwarding tables.

How does EVPN scale Layer 2 services in an IP fabric?

By using BGP to distribute MAC addresses, avoiding flooding of unknown unicast traffic

By using Spanning Tree Protocol to prevent loops

By requiring all traffic to be replicated to every leaf switch

By limiting the number of VLANs that can be deployed

A service provider is deploying EVPN-VXLAN in a data center to provide both Layer 2 and Layer 3 services to customers. They need to scale the number of MAC routes and IP routes without overwhelming the control plane. Which EVPN mechanism directly helps scale the control plane?

Use a single VTEP for all tenants.

Use BGP EVPN route reflection to distribute MAC and IP routes.

A service provider is deploying EVPN-VXLAN in a multi-tenant data center. They need to support overlapping MAC addresses across tenants. They also want to minimize the number of VTEPs and reduce the control-plane load. Which design best meets these requirements?

Use a single VNI for all tenants.

Use EVPN route reflection to reduce control-plane load.

Use a single VTEP per leaf and rely on route targets to isolate tenant routes.

Use a separate VTEP per tenant on each leaf.

Juniper NetworksCertified Professional, Data Center (JNCIP-DC)

Domain 2Objective 3

IP Fabric Scaling JN0-683 Practice Questions (Page 2)

Part of the Layer 3 Fabrics domain, which makes up ~23% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~8–14 in this domain), expect 1–2 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

8concepts

Questions 6–10

6application · medium
A service provider is building a large IP fabric with hundreds of leaf switches. They plan to run BGP as the underlay routing protocol. To minimize the number of BGP sessions in the control plane, which design should they implement?
Select an answer first
7application · medium
A network operator notices that traffic between two leaf switches is consistently using only one of the four equal-cost paths. The underlay is BGP-based and all links are up. Which operational step should they take to troubleshoot this issue?
Select an answer first
8foundation · easy
How does EVPN scale Layer 2 services in an IP fabric?
Select an answer first
9application · medium
A service provider is deploying EVPN-VXLAN in a data center to provide both Layer 2 and Layer 3 services to customers. They need to scale the number of MAC routes and IP routes without overwhelming the control plane. Which EVPN mechanism directly helps scale the control plane?
Select an answer first
10expert · hard
A service provider is deploying EVPN-VXLAN in a multi-tenant data center. They need to support overlapping MAC addresses across tenants. They also want to minimize the number of VTEPs and reduce the control-plane load. Which design best meets these requirements?
Select an answer first

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