Comprehensive and Up-to-Date Juniper JN0-481 Practice Exam Questions

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Juniper JN0-481 Exam Overview:

Certification Vendor:	Juniper Networks
Exam Name:	Junos Data Center, Specialist (JNCIS-DC)
Exam Number:	JN0-481
Certificate Validity Period:	3 years
Exam Price:	$300 USD (may vary by region)
Related Certifications:	JNCIE-DC JNCIA-DC JNCIP-DC
Real Exam Qty:	Approximately 65
Available Languages:	English
Exam Format:	Multiple-choice, Multiple-response, Scenario-based questions
Passing Score:	Approximately 60–70%
Exam Duration:	90 minutes
Recommended Training:	EVPN-VXLAN Learning Resources Juniper Data Center Training Courses
Exam Registration:	Pearson VUE Juniper Exams Juniper Certification Portal
Sample Questions:	Juniper JN0-481 Sample Questions
Exam Way:	Online proctored or Pearson VUE test center
Pre Condition:	JNCIA-DC is recommended but not strictly required
Official Syllabus URL:	https://www.juniper.net/us/en/training/certification/certification-tracks/data-center.html

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Juniper JN0-481 Exam Syllabus Topics:

Topic	Details
Topic 1	Juniper Apstra Architecture: Introduces core Apstra components including the server, device agents, and UI, along with administrative features such as RBAC, event logging, and syslog.
Topic 2	Data Center Multitenancy: Covers multi-tenant network management through routing zones, VRFs, virtual networks, connectivity templates, security policies, VMware integration, and Data Center Interconnect.
Topic 3	Blueprint Operations: Covers day-to-day blueprint management including making and reverting changes, querying, virtual networks, Time Voyager, anomaly detection, property sets, configlets, and configuration types.
Topic 4	Apstra Design Phase: Covers pre-deployment planning elements such as reference designs, logical devices, device profiles, rack types, interface maps, and templates, including their configuration and troubleshooting.
Topic 5	Intent-Based Analytics: Covers Apstra's analytics tools including Graph Explorer, graph queries, and intent-based analytics probes for network monitoring, validation, and troubleshooting.

Juniper Data Center, Specialist (JNCIS-DC) Sample Questions (Q90-Q95):

NEW QUESTION # 90
You want to gracefully take a device out of service to perform an OS upgrade. How would you accomplish this task using Juniper Apstra?

A. After selecting the device in the Active tab, you would select Deploy Mode then Drain.
B. After selecting the device in the Staged tab, you would select Deploy Mode then Upgrade.
C. After selecting the device in the Dashboard tab, you would select Deploy Mode then Upgrade.
D. After selecting the device in the Staged tab, you would select Deploy Mode then Drain.

Answer: A

Explanation:
In Apstra 5.1, the correct operational method to gracefully remove a switch from service for maintenance is to set its Deploy Mode to Drain. Drain is a day-2 operational control that tells Apstra to adjust intent so the fabric can continue operating while the targeted device is logically taken out of service as much as the design allows. This is especially relevant in EVPN-VXLAN leaf-spine fabrics where taking down a spine or a leaf can disrupt underlay BGP adjacencies and overlay reachability if traffic is not shifted first.
This action is performed from the blueprint's Active view because Drain affects the currently deployed, running fabric state (not a staged design change). Selecting the device under Active and changing Deploy Mode to Drain initiates the workflow that prepares the device for maintenance by reducing its role in forwarding and/or withdrawing dependent services according to the blueprint's modeled redundancy (for example, shifting server-facing traffic to an MLAG/ESI peer where applicable, or reducing reliance on the device for transit). After the device is drained, an OS upgrade can be performed with less impact, and the device can later be returned to service by switching Deploy Mode back to Deploy and committing the change.
The "Upgrade" action is not the deploy-mode mechanism described for graceful removal; the key is Deploy Mode → Drain from Active, which is explicitly intended for maintenance and decommissioning scenarios.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/apstra5.1/apstra-user-guide/topics/task/device-drain.html
https://www.juniper.net/documentation/us/en/software/apstra4.2/apstra-drain-mode/apstra-drain-mode-guide/topics/concept/apstra-drain-mode-activate-or-disable-drain.html

NEW QUESTION # 91
You are using Juniper Apstra to create security policies that create ACLs on the fabric devices.
What are two valid objects that would be used within Apstra in this scenario? (Choose two.)

A. routing zone
B. domain name
C. application signature
D. virtual network

Answer: A,D

Explanation:
When creating security policies in Juniper Apstra, valid objects include:
- Virtual networks, which represent tenant segments in the fabric.
- Routing zones (VRFs), which provide Layer 3 isolation for those segments.

NEW QUESTION # 92
What is the function of a Device Profile in Juniper Apstra?

A. It defines the VXLAN VNI-to-VLAN mapping.
B. It defines user access permissions for a device.
C. It defines the hardware capabilities of a device model, such as port count and supported interface speeds.
D. It defines the routing protocol configuration for a device.

Answer: C

Explanation:
A Device Profile in Juniper Apstra describes the hardware characteristics of a specific device model, including the number and type of physical ports, supported interface speeds, and other platform-specific capabilities. This information is used alongside Interface Maps to correctly render configuration appropriate for the actual hardware being managed.

NEW QUESTION # 93
What is the purpose of an EVPN Ethernet segment identifier (ESI)?

A. To identify Layer 2 frame types for filtering purposes
B. To provide a hop count between devices
C. To specify a BGP community
D. To prevent loops within a LAG connection

Answer: D

Explanation:
In EVPN multihoming, the Ethernet Segment Identifier (ESI) is the mandatory identifier used to represent a multihomed Ethernet segment-for example, a server or downstream switch that is dual-homed to two leaf devices using a single logical LAG/port-channel. By assigning the same ESI to the participating leaf-facing interfaces, the fabric recognizes those links as belonging to one Ethernet segment and can apply EVPN multihoming procedures consistently across the pair.
A key outcome of EVPN multihoming is loop prevention for multi-attached Layer 2 domains. EVPN uses the Ethernet segment concept (identified by the ESI) along with Designated Forwarder (DF) election to ensure that only the appropriate device forwards BUM (broadcast, unknown unicast, multicast) traffic toward the multihomed segment, avoiding duplicate forwarding and L2 loops. In addition, ESI-based multihoming supports resilient forwarding behavior during failures (for example, link or node loss) while maintaining correct advertisement and convergence in the EVPN control plane.
Therefore, among the provided options, the purpose that best matches how ESI is used operationally is to prevent loops within a LAG/multihomed connection, which is fundamental to EVPN-VXLAN data center designs on Junos v24.4 leaf devices and is also explicitly supported by Apstra when modeling ESI-based dual-homing.
Verified Juniper sources (URLs):
https://www.juniper.net/documentation/us/en/software/nce/evpn-lag-multihoming-guide/topics/concept/evpn-lag-guide-introduction.html
https://www.juniper.net/documentation/us/en/software/nce/evpn-lag-multihoming-guide/topics/task/evpn-lag-guide-esi-types-lacp.html
https://www.juniper.net/documentation/us/en/software/junos/evpn/topics/topic-map/evpn-mh-df-election.html

NEW QUESTION # 94
You are building an IP fabric and have decided to use Junos devices to create an EBGP underlay. You must ensure that traffic is load balanced throughout your fabric.
You must also ensure that regardless of the path used through the fabric that all traffic is handled consistently and load balanced predictably.
According to Juniper Networks, what are three best practices that you should employ to help you achieve the desired behavior? (Choose three.)

A. Leaf devices should use a variety of link speeds for each uplink to the spine devices.
B. All spine devices should be the same model including linecards and port density.
C. Each leaf device should be a different model including linecards and port density.
D. Each leaf device must use the same link speed for all uplinks to the spine devices.
E. All leaf devices should be the same model including linecards and port density.

Answer: B,C,D

NEW QUESTION # 95
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