A company is building a new data center with a spine-and-leaf IP fabric. They need to support live migration of VMs between racks, which requires Layer 2 adjacency across the fabric. They also want to avoid STP and scale beyond traditional VLAN limits. Which technology should they use?

Traditional VLAN trunking across the spine

Static VLAN mapping on each leaf switch

What is the primary purpose of EVPN-VXLAN in a data center?

To encrypt all data center traffic.

To eliminate the need for IP addresses in the data center.

To replace the need for any physical switches.

To provide scalable Layer 2 and Layer 3 services over an IP fabric.

What is a key design principle of an IP fabric using Layer 3 routing in a spine-and-leaf topology?

Spine switches connect to each other to form a full mesh.

A single spine switch is used to simplify the design.

Every leaf switch connects to every spine switch, and routing protocols like EBGP are used to provide redundancy and scalability.

Layer 2 switching is used exclusively for all traffic.

A data center has two access switches that are connected to two different aggregation switches. The network team wants to provide active-active Layer 2 connectivity to servers without using STP. They also want to ensure that if one access switch fails, the other can take over without any configuration changes on the servers. Which technology should they use?

VLAN trunking with all links active

A network engineer is configuring a new IP fabric with EBGP. They want to ensure that the fabric can handle a failure of one spine switch without any manual intervention. What is the most important configuration to achieve this?

Configure OSPF with a single area

Configure a static default route to one spine switch

Configure BGP timers to detect failures quickly and enable ECMP for load balancing

Juniper NetworksCertified Associate, Data Center

Domain 1Objective 3

Layer 2 and Layer 3 Strategies JN0-281 Practice Questions (Page 4)

Part of the Data Center Architectures domain, which makes up ~30% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~11–18 in this domain), expect 2–4 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

10concepts

Questions 16–20

16application · medium
A company is building a new data center with a spine-and-leaf IP fabric. They need to support live migration of VMs between racks, which requires Layer 2 adjacency across the fabric. They also want to avoid STP and scale beyond traditional VLAN limits. Which technology should they use?
Select an answer first
17foundation · easy
What is the primary purpose of EVPN-VXLAN in a data center?
Select an answer first
18foundation · easy
What is a key design principle of an IP fabric using Layer 3 routing in a spine-and-leaf topology?
Select an answer first
19application · medium
A data center has two access switches that are connected to two different aggregation switches. The network team wants to provide active-active Layer 2 connectivity to servers without using STP. They also want to ensure that if one access switch fails, the other can take over without any configuration changes on the servers. Which technology should they use?
Select an answer first
20application · medium
A network engineer is configuring a new IP fabric with EBGP. They want to ensure that the fabric can handle a failure of one spine switch without any manual intervention. What is the most important configuration to achieve this?
Select an answer first

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