Juniper JN0-281 Exam Questions - Navigate Your Path to Success

The Juniper Data Center, Associate (JN0-281) exam is a good choice for Juniper Data Center Architect and Network Support Engineers and if the candidate manages to pass Juniper Data Center, Associate exam, he/she will earn Juniper Data Center Certification. Below are some essential facts for Juniper JN0-281 exam candidates:

In actual Juniper Data Center, Associate (JN0-281) exam, a candidate can expect 65 Questions and the officially allowed time is expected to be around 90 Minutes.
TrendyCerts offers 65 Questions that are based on actual Juniper JN0-281 syllabus.
Our Juniper JN0-281 Exam Practice Questions were last updated on: Apr 16, 2025

Sample Questions for Juniper JN0-281 Exam Preparation

Question 1

Which statement is correct about a three-stage IP fabric underlay?

AEvery ingress interface into the fabric is only two hops away from the egress interface.

BEvery spine device can communicate directly with other spine devices.

CEvery leaf device can communicate directly with other leaf devices.

DEvery server that connects to a three-stage IP fabric must be multihomed.

Correct : A

In a three-stage IP fabric (also known as a Clos fabric), traffic between any two points (ingress to egress) in the fabric is only two hops away.

Step-by-Step Breakdown:

Three-Stage IP Fabric:

Leaf Layer: Leaf switches connect directly to servers and edge devices.

Spine Layer: Spine switches provide connectivity between leaf switches but do not connect to each other directly.

Two-Hop Communication:

In this architecture, every leaf switch is connected to every spine switch. Therefore, when a packet enters the fabric via an ingress leaf switch, it is forwarded to a spine switch, which then directs the packet to the correct egress leaf switch. This path always involves exactly two hops:

Ingress leaf Spine Egress leaf.

Benefits:

This consistent two-hop path ensures predictable latency and makes the network highly scalable while maintaining low complexity.

Juniper Reference:

IP Fabric Architecture: This two-hop property of Clos fabrics is a hallmark of spine-leaf designs, as supported by Juniper's QFX and EX switches in data centers.

Options Selected by Other Users:

Question 2

A routing policy has been created to advertise OSPF routes in BGP. Which statement is correct in this scenario?

AApply the policy as an export policy within BGP.

BApply the policy as an export policy within OSPF.

CApply the policy as an import policy within BGP.

DApply the policy as an import policy within OSPF.

Correct : A

When advertising OSPF routes into BGP, the appropriate routing policy should be applied as an export policy in BGP.

Step-by-Step Breakdown:

OSPF to BGP Route Advertisement:

Routes learned via OSPF (a dynamic IGP) need to be exported into BGP to be advertised to external BGP peers. In Junos OS, this is done using export policies.

Export Policies in BGP:

An export policy controls which routes are advertised out of a BGP session. In this scenario, the routing policy must be applied to BGP as an export policy to export the OSPF-learned routes to external BGP peers.

Policy Configuration:

Example configuration:

set policy-options policy-statement EXPORT_OSPF term 1 from protocol ospf

set policy-options policy-statement EXPORT_OSPF term 1 then accept

set protocols bgp group <group-name> export EXPORT_OSPF

This policy ensures that only OSPF routes are exported into BGP.

Juniper Reference:

Routing Policy: Export policies are used in BGP to control route advertisements to peers, including those learned via OSPF.