Juniper JN0-480 Exam Dumps

Get All Data Center, Specialist (old) Exam Questions with Validated Answers

JN0-480 Pack
Vendor: Juniper
Exam Code: JN0-480
Exam Name: Data Center, Specialist (old)
Exam Questions: 65
Last Updated: February 26, 2026
Related Certifications: Juniper Data Center Certification
Exam Tags: Specialist Juniper Data center networking professionals
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Free Juniper JN0-480 Exam Actual Questions

Question No. 1

In Juniper Apstr

a. which three modes are available for devices? (Choose three.)

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Correct Answer: A, D, E

Juniper Apstra supports three deploy modes for devices:Deploy,Drain, andReady.These modes determine the configuration and state of the devices in the data center fabric12.

Deploy: This mode applies the full Apstra-rendered configuration to the device, according to the Apstra Reference Design.The device state becomesIS-ACTIVEand the device is ready to carry traffic in the fabric12.

Drain: This mode adds a ''drain'' configuration to the device, which prevents any new traffic from entering the device.The device state becomesIS-READYand the device is prepared for maintenance or decommissioning12.

Ready: This mode removes the Apstra-rendered configuration from the device, leaving only the basic configuration such as device hostname, interface descriptions, and port speed/breakout.The device state becomesIS-READYand the device is not part of the fabric12.Reference:

Device Configuration Lifecycle

Set Deploy Mode (Datacenter)


Question No. 2

Multilenancy for applications is achieved by creating virtual networks (VNs) within which construct?

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Correct Answer: D

According to the Juniper documentation1, a routing zone is an L3 domain, the unit of tenancy in multi-tenant networks. You create routing zones for tenants to isolate their IP traffic from one another, thus enabling tenants to re-use IP subnets. In addition to being in its own VRF, each routing zone can be assigned its own DHCP relay server and external system connections. You can create one or more virtual networks within a routing zone, which means a tenant can stretch its L2 applications across multiple racks within its routing zone. Therefore, the correct answer is D. routing zone. A routing zone is the construct within which you create virtual networks to achieve multitenancy for applications.Reference:Routing Zones


Question No. 3

You are adding a new switch to Juniper Apstra software. The Managed Devices page shows the "0 OS-Quarantined" status. What is the proper next step to make the device ready for use in a blueprint?

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Correct Answer: A

When a new switch is added to Juniper Apstra software, it initially shows the ''0 OS-Quarantined'' status, which means that the device is not yet managed by Apstra and has not been assigned to any blueprint. The proper next step to make the device ready for use in a blueprint is to acknowledge the device, which is a manual action that confirms the device identity and ownership.Acknowledging the device changes its status to ''OOS-Ready'', which means that the device is ready to be assigned to a blueprint and deployed12.Reference:

Managing Devices

AOS Device Configuration Lifecycle


Question No. 4

In the Juniper Apstra Ul. you are creating a VNI pool for virtual networks.

In this scenario, which VNI range is acceptable?

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Correct Answer: B

In the Juniper Apstra UI, you can create VNI pools for virtual networks that use VXLAN encapsulation in the overlay network. A VNI pool is a resource pool that contains a range of VNIs that can be assigned to the virtual networks.The valid VNI range for a VNI pool is 4096 through 16777214, according to the VXLAN standard1. Therefore, the statement B is correct in this scenario.

The following three statements are incorrect in this scenario:

Any range is acceptable for the VNI pool.This is not true, because the VNI range has a lower and upper limit defined by the VXLAN standard1. The lower limit is 4096, and the upper limit is 16777214. Any VNI outside this range is invalid and cannot be used for VXLAN encapsulation.

The valid VNI range is 2 through 4096. This is not true, because the VNI range does not start from 2, but from 4096.The VNIs from 2 to 4095 are reserved and cannot be used for VXLAN encapsulation1.

The valid VNI range is 1 through 10000.This is not true, because the VNI range does not include 1, which is also reserved and cannot be used for VXLAN encapsulation1.The VNI range also does not end at 10000, but at 16777214, which is the maximum possible value for a 24-bit VNI field1.


VNI Pools (Resources)

Question No. 5

Which two statements about VXLAN VNIs are correct? (Choose two.)

Show Answer Hide Answer
Correct Answer: A, C

VXLAN VNIs are virtual network identifiers that are used to identify and isolate Layer 2 segments in the overlay network. VXLAN VNIs have the following characteristics:

VNIs can have over 16 million unique values.This is because VXLAN VNIs are 24-bit fields that can range from 4096 to 16777214, according to the VXLAN standard1. This allows VXLAN to support a large number of Layer 2 segments and tenants in the network.

VNIs identify a broadcast domain. This is because VXLAN VNIs are used to group the end hosts that belong to the same Layer 2 segment and can communicate with each other using VXLAN tunnels. The VXLAN tunnels are established using the VTEP information that is distributed by EVPN. The VTEPs are VXLAN tunnel endpoints that perform the VXLAN encapsulation and decapsulation.The VXLAN tunnels preserve the Layer 2 semantics and support the broadcast, unknown unicast, and multicast traffic within the same VNI2.

The following two statements are incorrect in this scenario:

VNIs identify a collision domain. This is not true, because VXLAN VNIs do not identify a collision domain, which is a network segment where data packets can collide with each other. VXLAN VNIs identify a broadcast domain, which is a network segment where broadcast traffic can reach all the devices.Collision domains are not relevant in VXLAN networks, because VXLAN uses MAC-in-UDP encapsulation and IP routing to transport the Layer 2 frames over the Layer 3 network1.

VNIs are alphanumeric values. This is not true, because VXLAN VNIs are numeric values, not alphanumeric values.VXLAN VNIs are 24-bit fields that can range from 4096 to 16777214, according to the VXLAN standard1. Alphanumeric values are values that contain both letters and numbers, such as ABC123 or 1A2B3C.


Virtual Extensible LAN (VXLAN) Overview

EVPN LAGs in EVPN-VXLAN Reference Architectures

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