A cloud provider is deploying a multi-tenant data center fabric using EVPN with VXLAN. Each tenant has its own virtual network, and the provider needs to ensure that MAC address learning is efficient and does not flood the underlay. Which mechanism does EVPN use to achieve this?

EVPN relies on the VXLAN data plane to flood ARP and MAC learning frames across all VTEPs in the fabric, similar to traditional Ethernet bridging.

EVPN uses OSPF to exchange MAC addresses between VTEPs, ensuring fast convergence and loop-free operation.

EVPN uses BGP to distribute MAC and IP address reachability information, so VTEPs learn remote MAC addresses via the control plane rather than data-plane flooding.

EVPN assigns a unique VNI per MAC address, allowing the data plane to forward frames directly without any control-plane signaling.

What is the primary role of MPLS over UDP in data center networks?

To enable load balancing of MPLS traffic across ECMP paths

To replace the need for MPLS labels in the data plane

To reduce the MTU requirements for MPLS packets

To provide encryption for MPLS payloads

A data center operator is deploying EVPN with VXLAN to provide multitenancy. Each tenant has its own VNI, and the operator wants to ensure that tenant traffic is isolated at the control plane. Which EVPN construct is used to achieve this isolation?

VLAN IDs are used in the EVPN control plane to separate tenant routes.

Route targets (RTs) are used to control the import and export of EVPN routes, ensuring that routes from one tenant are not leaked to another.

VXLAN VNIs are used to isolate tenants at the data plane, but the control plane is shared across all tenants.

MAC addresses are used to identify tenants, and each tenant is assigned a unique MAC prefix.

Juniper NetworksCertified Associate, Cloud

Domain 3Objective 3

Encapsulation and Tunneling (MPLS over GRE, MPLS over UDP, VXLAN, EVPN with VXLAN, GENEVE) JN0-214 Practice Questions (Page 3)

Part of the Network Virtualization domain, which makes up ~10% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)

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Questions 11–15

11application · medium
A cloud provider is deploying a multi-tenant data center fabric using EVPN with VXLAN. Each tenant has its own virtual network, and the provider needs to ensure that MAC address learning is efficient and does not flood the underlay. Which mechanism does EVPN use to achieve this?
Select an answer first
12foundation · easy
Which protocol does GENEVE use as its transport?
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13foundation · easy
What is the primary role of MPLS over UDP in data center networks?
Select an answer first
14application · medium
A data center operator is deploying MPLS-over-UDP to transport MPLS packets across an IP fabric. The team is concerned about load balancing of the encapsulated traffic across ECMP paths. Which field in the UDP header is specifically used to improve entropy for load balancing?
Select an answer first
15application · medium
A data center operator is deploying EVPN with VXLAN to provide multitenancy. Each tenant has its own VNI, and the operator wants to ensure that tenant traffic is isolated at the control plane. Which EVPN construct is used to achieve this isolation?
Select an answer first

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Encapsulation and Tunneling (MPLS over GRE, MPLS over UDP, VXLAN, EVPN with VXLAN, GENEVE) JN0-214 Practice Questions (Page 3)

Questions 11–15

A cloud provider is deploying a multi-tenant data center fabric using EVPN with VXLAN. Each tenant has its own virtual network, and the provider needs to ensure that MAC address learning is efficient and does not flood the underlay. Which mechanism does EVPN use to achieve this?

Which protocol does GENEVE use as its transport?

What is the primary role of MPLS over UDP in data center networks?

A data center operator is deploying MPLS-over-UDP to transport MPLS packets across an IP fabric. The team is concerned about load balancing of the encapsulated traffic across ECMP paths. Which field in the UDP header is specifically used to improve entropy for load balancing?

A data center operator is deploying EVPN with VXLAN to provide multitenancy. Each tenant has its own VNI, and the operator wants to ensure that tenant traffic is isolated at the control plane. Which EVPN construct is used to achieve this isolation?

Keep studying — Network Virtualization