How long does it take to prepare for the Cisco Enterprise Advanced Routing and Services (ENARSI)?

The exam itself is 90 minutes, which tells you how much is at stake in one sitting. Preparation time is usually measured in weeks rather than days for a professional exam of this size, and this one scores 2.3/10 for difficulty in our bank.

Which Cisco Enterprise Advanced Routing and Services (ENARSI) domain should I study first?

Layer 3 Technologies, at 35% of the exam. It carries the most weight, so it is where your preparation effort returns the most points.

Should I do practice questions or read a book?

Do practice questions first for any domain you are weak in, and read for the ones you understand but cannot apply. Reading everything twice is the most common way to fail: it feels like progress and it is not. Certilum has 60 questions for this exam, scored per domain against the official weights.

What score should I have on a mock before booking the exam?

At least 92% on a timed mock in the real format. The 82% cut score leaves very little margin.

What is the single best way to find my weak domain?

Take one full mock, then look at the per-domain breakdown rather than the total. The total tells you whether you passed; the breakdown tells you which domain to study next, and that is the only actionable number in the result.

Cisco Enterprise Advanced Routing and Services (ENARSI)

Study plan

How to Pass the Cisco Enterprise Advanced Routing and Services (ENARSI) Exam

300-410

A study plan for the Cisco Enterprise Advanced Routing and Services (ENARSI) certification exam, built from the official domain weights instead of a generic template. Create a structured lab environment using Cisco Modeling Labs or GNS3/EVE-NG with IOSv/IOL images. Practice redistribution between EIGRP, OSPF, and BGP; implement route filtering using prefix lists, route maps, and distribute lists; build DMVPN and FlexVPN tunnels; configure CoPP and AAA; and use EEM, IP SLA, NetFlow, and SNMP for monitoring. Then reinforce with timed practice exams and troubleshoot injected faults in each domain.

4 domains

60 questions

90 min

82% to pass

certilum

Study in weight order, not topic order

The plan below follows the official blueprint weights, so the order of study is the order that returns the most points.

1
Layer 3 Technologies
35%
- Compare and implement EIGRP, including neighbor adjacencies, path selection, loop prevention, route filtering, route summarization, and redistribution.
- Compare and implement OSPFv2 and OSPFv3, including neighbor adjacencies, path selection, loop prevention, route filtering, route summarization, and redistribution.
- Implement and verify BGP for enterprise networks, including path selection, neighbor relationships, route filtering, route summarization, and redistribution.
- Implement and verify Virtual Routing and Forwarding (VRF) instances.
- +3 more topics in the blueprint
21 practice questions tagged to this domain.
2
Infrastructure Services
25%
- Implement and verify DHCP, including server, relay, client, and options.
- Implement and verify QoS, including classification, marking, shaping, policing, and queuing.
- Implement and verify network monitoring using NetFlow, SNMP, and syslog.
- Implement and verify Embedded Event Manager (EEM).
- +2 more topics in the blueprint
15 practice questions tagged to this domain.
3
VPN Technologies
20%
- Implement and verify Dynamic Multipoint VPN (DMVPN), including hub-to-spoke, spoke-to-spoke, pre-shared key, and certificate-based authentication.
- Implement and verify IPsec, including site-to-site, GRE tunnel, and Virtual Tunnel Interface (VTI).
- Implement and verify FlexVPN, including IKEv2, pre-shared key, and certificate-based authentication.
12 practice questions tagged to this domain.
4
Infrastructure Security
20%
- Implement and verify IPv4 and IPv6 access control lists.
- Implement and verify Unicast Reverse Path Forwarding (uRPF).
- Implement and verify Control Plane Policing (CoPP).
- Implement and verify Authentication, Authorization, and Accounting (AAA) features.
- +1 more topics in the blueprint
12 practice questions tagged to this domain.

Three phases, in order

Most failures are process failures, not knowledge failures.

Step 1

Phase 1 — Learn the high-weight domains

Start where the points are. The first domains on this plan carry the most weight, so a gap there costs the most. Cover the objectives, then close each topic with practice questions you actually get wrong.

Step 2

Phase 2 — Close the mid-weight domains

The middle of the blueprint is where most candidates plateau. These domains are worth less per topic than the first phase, but they add up fast, and they are the usual difference between a near miss and a clear pass.

Step 3

Phase 3 — Timed full mocks

Stop reading new material at this point. Run full-length exams under the real time limit and the real format, and use the per-domain breakdown to find which domain is still costing you the pass.

Where we put the emphasis

Certilum prioritizes exam-focused scenario labs, structured revision paths, and diagnostic drills that mirror the 45-65 question format and the need to identify the fastest, safest repair in enterprise routing and VPN environments.

The order matters less than the loop. Every domain you finish should end with questions you got wrong, because the mistake is the only thing you actually needed to study. On the Cisco Enterprise Advanced Routing and Services (ENARSI) that loop is worth 20% of the exam in the first block alone.

More about the Cisco Enterprise Advanced Routing and Services (ENARSI) exam

Explore the rest of this page series: format, cost, difficulty, requirements and how to prepare.

Exam formatQuestions, time and scoring Exam costPrice, retakes and total budget Pass rateThe score you need Who can take itRequirements and prerequisites

Related certifications

Explore other certifications in the same category and see how they stack up.

Microsoft Certified: Cybersecurity Architect Expert

Microsoft

AWS Certified Security – Specialty

Amazon Web Services

Arista Network Detection & Response Specialist

Arista

Azure Security Engineer Associate

Microsoft

CCNP Security

Cisco

Certificate of Cloud Security Knowledge v5

Cloud Security Alliance

Frequently asked questions

Everything you need to know about the Cisco Enterprise Advanced Routing and Services (ENARSI) exam.

Create a structured lab environment using Cisco Modeling Labs or GNS3/EVE-NG with IOSv/IOL images. Practice redistribution between EIGRP, OSPF, and BGP; implement route filtering using prefix lists, route maps, and distribute lists; build DMVPN and FlexVPN tunnels; configure CoPP and AAA; and use EEM, IP SLA, NetFlow, and SNMP for monitoring. Then reinforce with timed practice exams and troubleshoot injected faults in each domain.