A company is migrating a legacy application to a two-site data center design. The application requires a single broadcast domain and uses a protocol that relies on Layer 2 adjacency. The network team is considering stretching the VLAN using VXLAN. What is the primary benefit of using VXLAN for this Layer 2 stretch?

It eliminates the need for a gateway at each site

It provides native Layer 3 routing between the sites

It allows the VLAN to be extended over an IP network without requiring MPLS

It reduces the MTU requirements on the underlay

What is the purpose of the VXLAN Network Identifier (VNI)?

To identify the source IP address of the tunnel

To identify the VXLAN overlay segment, similar to a VLAN ID

To specify the routing protocol used

What is a key difference between using EVPN-VXLAN and MPLS for Layer 2 extension?

EVPN-VXLAN is a routing protocol, while MPLS is a switching technology

EVPN-VXLAN provides Layer 3 routing, while MPLS only provides Layer 2 switching

EVPN-VXLAN is only for data centers, while MPLS is only for service providers

EVPN-VXLAN operates over IP networks, while MPLS requires an MPLS-enabled core

A company is deploying a new application that requires both Layer 2 adjacency for a legacy component and Layer 3 routing for a modern component. The two components are in the same tenant but on different subnets. The network team wants to use a single DCI technology to provide both capabilities across two data centers. Which technology satisfies this requirement?

IP fabric with OSPF and no overlay

VPLS with a single pseudowire for both VLANs and routed subnets

MPLS L2VPN with a VPLS instance and a separate L3VPN

EVPN with both MAC-VRF and IP-VRF instances

What is the primary purpose of stretching Layer 2 across data center sites?

To enable devices in different sites to communicate as if they were on the same broadcast domain

To provide a dedicated physical link between data center sites

To improve the security of inter-site communication

To replace the need for IP routing between data center sites

Juniper NetworksCertified Professional, Data Center (JNCIP-DC)

Domain 5Objective 2

Layer 2 and Layer 3 Stretch JN0-683 Practice Questions (Page 5)

Part of the Data Center Interconnect domain, which makes up ~20% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–12 in this domain), expect 1–2 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)

27questions here

6free pages

9concepts

Questions 21–25

21application · medium
A company is migrating a legacy application to a two-site data center design. The application requires a single broadcast domain and uses a protocol that relies on Layer 2 adjacency. The network team is considering stretching the VLAN using VXLAN. What is the primary benefit of using VXLAN for this Layer 2 stretch?
Select an answer first
22foundation · easy
What is the purpose of the VXLAN Network Identifier (VNI)?
Select an answer first
23foundation · easy
What is a key difference between using EVPN-VXLAN and MPLS for Layer 2 extension?
Select an answer first
24application · medium
A company is deploying a new application that requires both Layer 2 adjacency for a legacy component and Layer 3 routing for a modern component. The two components are in the same tenant but on different subnets. The network team wants to use a single DCI technology to provide both capabilities across two data centers. Which technology satisfies this requirement?
Select an answer first
25foundation · easy
What is the primary purpose of stretching Layer 2 across data center sites?
Select an answer first

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Layer 2 and Layer 3 Stretch JN0-683 Practice Questions (Page 5)

Questions 21–25

What is the purpose of the VXLAN Network Identifier (VNI)?

What is a key difference between using EVPN-VXLAN and MPLS for Layer 2 extension?

What is the primary purpose of stretching Layer 2 across data center sites?

Keep studying — Data Center Interconnect