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Key Facts: JNCIE-ENT Exam

6 hours

Lab Exam Duration

Juniper JNCIE-ENT certification page

$1,600

Exam Fee

Juniper exam pricing

JPR-944

Current Exam Code

Transitioning to JPR-946 on July 13, 2026

JNCIP-ENT

Prerequisite

Juniper certification track requirements

3 years

Certification Validity

Juniper recertification policy

The JNCIE-ENT is a 6-hour hands-on lab exam (current exam code JPR-944, transitioning to JPR-946 on July 13, 2026) costing $1,600. Candidates build an enterprise network infrastructure with multiple routers and switches, configuring IGPs, BGP, EVPN, Layer 2 features, CoS, routing policies, and automation. Prerequisite is JNCIP-ENT. Delivered by Juniper Networks via remote proctored lab events. Certification valid for 3 years.

Sample JNCIE-ENT Practice Questions

Try these sample questions to review concepts for the JNCIE-ENT exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In Junos OS, what is the purpose of the 'candidate configuration' datastore?
A.To store the currently active device configuration
B.To hold proposed changes that are not active until committed
C.To maintain a backup of the last known good configuration
D.To store factory default settings
Explanation: The candidate configuration is a staging area where administrators make changes without affecting the running device. Changes are only applied to the operational configuration after a 'commit' command. This allows review and validation before activation, preventing configuration errors on live devices.
2What is the maximum number of OSPF areas a single ABR (Area Border Router) can connect in a properly designed OSPF network?
A.Only 2 areas
B.There is no hard limit, but best practice recommends keeping it manageable (typically area 0 plus a few others)
C.Exactly 5 areas
D.OSPF does not support multiple areas
Explanation: OSPF has no protocol-defined maximum for the number of areas an ABR can connect. However, each area adds CPU and memory overhead for LSDB maintenance. Best practice recommends limiting ABR area connections to prevent resource exhaustion, typically backbone area 0 plus a small number of stub or NSSA areas.
3In BGP, what attribute does the LOCAL_PREF value affect?
A.The preference for routes learned from EBGP neighbors
B.The outbound path selection by influencing which exit point is preferred within the local AS
C.The metric sent to EBGP peers
D.The route origin type
Explanation: LOCAL_PREF is exchanged between IBGP peers within the same AS. Higher LOCAL_PREF is preferred. It determines the preferred exit point for traffic leaving the AS when multiple paths exist. It is not sent to EBGP peers (MED influences inbound from external peers).
4What is the purpose of EVPN Type 2 routes in a VXLAN fabric?
A.To advertise IP prefix routes for inter-subnet routing
B.To advertise MAC and MAC/IP address information for host learning across the fabric
C.To establish BUM (Broadcast, Unknown unicast, Multicast) forwarding trees
D.To advertise Ethernet Segment (ES) membership
Explanation: EVPN Type 2 (MAC/IP Advertisement) routes distribute host MAC addresses and optionally their IP addresses across the VXLAN fabric via BGP. This enables remote VTEPs to learn MAC-to-VTEP mappings without flooding, providing optimal forwarding in the data center overlay.
5In Junos OS, what does the 'commit confirmed' command do?
A.Commits changes permanently without any safeguard
B.Commits changes temporarily and automatically rolls back after a specified time unless confirmed with another commit
C.Displays the differences between candidate and active configurations
D.Saves the configuration to a file
Explanation: 'commit confirmed <minutes>' applies the candidate configuration but starts a rollback timer. If no confirming 'commit' is issued within the specified time, Junos automatically reverts to the previous configuration. This is a critical safety mechanism for remote configuration changes.
6What is the purpose of an OSPF NSSA (Not-So-Stubby Area)?
A.To block all external routes from entering the area
B.To allow an ASBR within a stub area to inject external routes as Type 7 LSAs, which are converted to Type 5 at the ABR
C.To create a transit area for inter-area traffic
D.To disable OSPF authentication within the area
Explanation: NSSA allows external routes to be imported by an ASBR within what would otherwise be a stub area. External routes enter as Type 7 LSAs (NSSA-specific), and the ABR converts them to standard Type 5 External LSAs for distribution to other areas. This solves the stub area limitation of no external routes.
7In BGP route selection, what is the correct order of the first three tie-breaking criteria in Junos OS?
A.AS-Path length, Origin, MED
B.LOCAL_PREF (highest), AS-Path length (shortest), Origin (IGP > EGP > Incomplete)
C.MED, LOCAL_PREF, AS-Path length
D.Origin, LOCAL_PREF, MED
Explanation: Junos BGP route selection follows: 1) Highest LOCAL_PREF, 2) Shortest AS-Path, 3) Lowest Origin (IGP=0 > EGP=1 > Incomplete=2), then 4) Lowest MED, followed by EBGP over IBGP, lowest IGP metric to next-hop, and router-id tiebreakers.
8In an EVPN-VXLAN fabric, what is the role of the VTEP (VXLAN Tunnel Endpoint)?
A.To provide DNS resolution for overlay networks
B.To encapsulate and decapsulate Layer 2 frames into VXLAN UDP packets for transport across the IP underlay
C.To manage spanning tree in the overlay
D.To assign IP addresses via DHCP in the VXLAN fabric
Explanation: VTEPs are the ingress and egress points for VXLAN tunnels. They encapsulate original Ethernet frames with a VXLAN header (VNI), UDP header, and outer IP header for transport across the Layer 3 underlay. At the destination VTEP, the encapsulation is removed and the original frame is delivered.
9What is the function of a routing policy 'term' in Junos OS?
A.To set a timer for route expiration
B.A named rule within a policy containing match conditions (from) and actions (then) that processes routes sequentially
C.To terminate a BGP session
D.To define VLAN membership
Explanation: In Junos routing policy, a 'term' is a named block containing 'from' conditions (match criteria like prefix, protocol, community) and 'then' actions (accept, reject, modify attributes). Terms are evaluated in order; the first matching term determines the action for that route.
10In BGP, what is the purpose of a route reflector?
A.To filter unwanted routes from the routing table
B.To allow IBGP peers to receive routes without requiring a full mesh by reflecting routes to client peers
C.To convert IBGP routes to EBGP routes
D.To encrypt BGP update messages
Explanation: A route reflector (RR) relaxes the IBGP full-mesh requirement. Instead of every IBGP router peering with every other, clients peer with the RR. The RR reflects routes between clients and non-clients following specific rules, scaling IBGP in large networks.

About the JNCIE-ENT Exam

JNCIE-ENT is the pinnacle of Juniper's enterprise routing and switching certification track. The 6-hour hands-on lab exam validates expert ability to deploy, configure, manage, and troubleshoot Junos-based enterprise networks including OSPF, IS-IS, BGP, EVPN-VXLAN, Layer 2 switching, CoS, routing policies, and automation.

Exam sponsor: Juniper Networks. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

6 questions

Time Limit

6 hours

Passing Score

Pass/Fail (exact threshold not published)

Exam / Certification Fees

$1,600

Exam sponsor website

Reported exam pass rate: Not published. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

~20%

IGP (OSPF and IS-IS)

Multi-area OSPF, OSPFv3, IS-IS levels, NSSA, authentication, reference bandwidth, and routing policy

~20%

BGP

Route reflectors, communities, AS-Path manipulation, MED, LOCAL_PREF, multipath, and traffic engineering

~15%

EVPN-VXLAN

EVPN route types, VNI, VTEP, anycast gateway, multi-homing, ARP suppression, and IRB interfaces

~15%

Layer 2 Switching and Security

Virtual Chassis, RSTP, VLANs, 802.1X, DHCP snooping, DAI, storm control, PoE, and LLDP

~15%

System Setup and Protocol Independent Routing

Junos commit model, routing instances, FBF, GRE tunnels, BFD, ECMP, and prefix lists

~15%

Class of Service and Automation

BA classifiers, schedulers, policers, rewrite rules, RED, commit/op/event scripts, PyEZ, and Junos Space

Preparing for the JNCIE-ENT Exam

What You Need to Know

  • Passing score: Pass/Fail (exact threshold not published)
  • Exam length: 6 questions
  • Time limit: 6 hours
  • Exam / certification fees: $1,600 Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

JNCIE-ENT: Suggested Study Strategy

1Practice full 6-hour lab simulations regularly to build time management discipline
2Master Junos CLI efficiency: wildcards, pipe commands, commit confirmed, and rollback
3Build and break configurations deliberately to strengthen troubleshooting skills
4Focus heavily on EVPN-VXLAN as it's a significant portion of the updated exam
5Know routing policy term logic deeply — from conditions to actions to default behavior

Frequently Asked Questions

What is the JNCIE-ENT exam format?

The JNCIE-ENT is a 6-hour hands-on lab exam where you build and troubleshoot an enterprise network with multiple routers and switches. You configure IGPs, BGP, EVPN, Layer 2 features, CoS, and routing policies on real Junos devices. No multiple-choice questions.

How much does the JNCIE-ENT exam cost?

The exam costs $1,600 per attempt. Including prerequisites (JNCIA through JNCIP), the total certification path costs approximately $2,500+ plus training and travel expenses.

Is the JNCIE-ENT exam changing in 2026?

Yes. The current exam (JPR-944) will be replaced by JPR-946 on July 13, 2026. Beta exams for the new version are being offered at 50% discount during events starting March 2026. Candidates preparing for JPR-944 should plan to test before the EOL date.

Can I take the JNCIE-ENT exam remotely?

Yes. Juniper offers remote proctored JNCIE lab exams across Americas (AMER), Europe/Middle East/Africa (EMEA), and Asia Pacific (APAC) regions. Check the Juniper Learning Portal for available dates and registration.

What prerequisite certification do I need?

You must hold an active JNCIP-ENT (Professional level) certification. The full track is JNCIA-Junos (Associate) → JNCIS-ENT (Specialist) → JNCIP-ENT (Professional) → JNCIE-ENT (Expert).

How should I prepare for the JNCIE-ENT lab exam?

Build a virtual lab (EVE-NG, GNS3, or Juniper vLabs) with multiple vMX/vQFX devices. Practice: 1) IGP + BGP full topology builds under time pressure, 2) EVPN-VXLAN fabric deployment, 3) troubleshooting broken configurations, 4) CoS implementation, and 5) running full 6-hour practice labs weekly.