JNCIE-ENT Practice Test
Build your confidence for JNCIE-ENT. Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.
Try a sample questionExam overview and details
The Juniper Networks Certified Internet Expert - Enterprise (JNCIE-ENT) is the highest-level certification in Juniper's enterprise routing and switching track. This rigorous performance-based exam validates an expert's ability to design, implement, and troubleshoot complex enterprise networks using Junos OS. Candidates are tested on their comprehensive knowledge of advanced technologies and their practical application in a live lab environment. The exam assesses skills in advanced OSPF and IS-IS, BGP, multicast, MPLS, Layer 2 and Layer 3 VPNs, EVPN-VXLAN, and advanced security and automation features. It is designed for senior network engineers, architects, and consultants who are responsible for mission-critical enterprise network infrastructure. Achieving the JNCIE-ENT certification demonstrates not just theoretical knowledge, but proven, hands-on expertise in building and operating sophisticated enterprise networks, establishing the holder as a recognized authority in the field.
Sample Questions
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During ticket JPR944-4197 for Raven Research, a candidate is validating a JPR-944 enterprise routing and switching lab built on vMX 18.3 and EX Series 18.4. A route learned from eBGP is hidden on a Junos router. The route has a valid AS path, but the BGP next hop is not reachable in inet.0. Which correction is most direct? The change record also mentions an unrelated hostname cleanup that must not drive the design choice.
During ticket JPR944-4261 for Bering Finance, a candidate is validating a JPR-944 enterprise routing and switching lab built on vMX 18.3 and EX Series 18.4. A PyEZ account can log in but cannot retrieve configuration or commit a candidate change. Local super-user accounts work. The security team wants least privilege. What should be changed? The change record also mentions an unrelated hostname cleanup that must not drive the design choice.
While rehearsing the hands-on JNCIE-ENT workflow at Harbor Energy in September 2026, the candidate must fix the issue without relying on out-of-band shortcuts. The lab asks for SSH and NETCONF access only from the jump subnet. A candidate applied a firewall filter to transit interfaces, but unauthorized management attempts still reach the routing engine through loopback. Where should the protection be placed? The backup routing engine is synchronized, so the issue is not an RE switchover artifact.
During ticket JPR944-4173 for Northstar Clinic, a candidate is validating a JPR-944 enterprise routing and switching lab built on vMX 18.3 and EX Series 18.4. A multi-area OSPF design has an ABR connected to area 0 and area 20. Routes from area 20 are visible in area 0, but another nonbackbone area does not receive them. What design rule should be checked first? The change record also mentions an unrelated hostname cleanup that must not drive the design choice.
During ticket JPR944-4145 for Fjord Manufacturing, a candidate is validating a JPR-944 enterprise routing and switching lab built on vMX 18.3 and EX Series 18.4. A branch uses two static defaults: a primary next hop through ge-0/0/0 and a backup LTE next hop. The backup route should appear only when the primary route is unusable. Which static route design is best? The change record also mentions an unrelated hostname cleanup that must not drive the design choice.
Career Opportunities & Salary
Exam insights and study advice
In the real world, enterprise networks are the backbone of modern business, supporting everything from cloud applications to unified communications. The JNCIE-ENT validates the precise, hands-on skills required to ensure these networks are resilient, scalable, and secure. The ability to correctly implement and troubleshoot complex protocols like EVPN-VXLAN for data center fabrics or advanced BGP policies for multi-homed internet connectivity directly translates to reduced network downtime, improved performance, and the capacity to support business innovation. This certification proves you can solve the most challenging problems, not just pass a test, making you a critical asset for any organization relying on Juniper infrastructure.
Recommended
These are the backgrounds the certifying body suggests. Check the vendor's own page for anything it formally requires.
What this exam covers
01Automation
Topics
- On-box scripting (Commit, OP, and event scripts)
- Off-box scripting (PyEZ scripts)
Learning objectives
- On-box scripting (Commit, OP, and event scripts)
- Off-box scripting (PyEZ scripts)
02BGP
Topics
- Multi-ISP routing
- Route reflectors
- BGP route selection, communities, and policy implementation
Learning objectives
- Multi-ISP routing
- Route reflectors
- BGP route selection, communities, and policy implementation
03Class of Service
Topics
- Queuing configuration
- Classifiers and rewrite rules
- Policers
Learning objectives
- Queuing configuration
- Classifiers and rewrite rules
- Policers
04EVPN
Topics
- EVPN configuration and troubleshooting
Learning objectives
- EVPN configuration and troubleshooting
05GRE Tunnels
Topics
- GRE tunnel configuration and management
Learning objectives
- GRE tunnel configuration and management
06IGP Protocols
Topics
- OSPFv2 and OSPFv3 configuration and troubleshooting
- IS-IS configuration and troubleshooting
- Authentication and multi-area support
Learning objectives
- OSPFv2 and OSPFv3 configuration and troubleshooting
- IS-IS configuration and troubleshooting
- Authentication and multi-area support
07Layer 2 Switching
Topics
- Virtual Chassis configuration
- VLAN configuration and management
- Spanning tree protocols (RSTP, MSTP)
- Layer 2 security (DAI, DHCP snooping, storm control)
Learning objectives
- Virtual Chassis configuration
- VLAN configuration and management
- Spanning tree protocols (RSTP, MSTP)
- Layer 2 security (DAI, DHCP snooping, storm control)
08Routing Policy
Topics
- Protocol-independent routing
- Aggregate routes
- Filter-based forwarding
Learning objectives
- Protocol-independent routing
- Aggregate routes
- Filter-based forwarding
09System Setup
Topics
- Device security configuration
- Interface configuration (AE, LACP, VRRP)
- SNMP, logging, user accounts, DHCP and NTP
Learning objectives
- Device security configuration
- Interface configuration (AE, LACP, VRRP)
- SNMP, logging, user accounts, DHCP and NTP