CCIE Enterprise Infrastructure: plan your preparation
Master the Cisco CCIE certification with expert-level practice questions covering enterprise infrastructure, advanced routing, network design, and complex troubleshooting scenarios.
The Cisco Certified Internetwork Expert (CCIE) is the most prestigious networking certification in the industry. This expert-level credential validates your ability to design, implement, operate, and troubleshoot complex converged network infrastructure. CCIE holders are recognized as the elite professionals in networking, commanding top salaries and leadership positions. The certification requires passing both a qualifying written exam and an intensive 8-hour hands-on lab exam. Our practice questions help you prepare for the written exam with complex scenarios that test deep technical knowledge.
Exam version and format
CCIE Enterprise Infrastructure requires the ENCOR qualifying exam and an 8-hour lab. Use Cisco’s current blueprint and lab instructions. These knowledge questions support preparation; they do not simulate the hands-on lab.
Checked September 8, 2026. Read the official CCIE Enterprise Infrastructure exam guidance before booking.
Current exam outline
- Network Infrastructure: 30%
- Software-Defined Infrastructure: 25%
- Transport Technologies and Solutions: 15%
- Infrastructure Security and Services: 15%
- Infrastructure Automation and Programmability: 15%
Why Practice for CCIE?
The Cisco Certified Internetwork Expert (CCIE) is the most prestigious networking certification in the industry. With only approximately 65,000 active CCIEs worldwide, earning this certification places you among the top 1% of networking professionals globally.
Our practice questions prepare you for both the ENCOR written exam and help reinforce concepts essential for the 8-hour lab exam.
Expert-Level Content
Complex scenarios mirroring the difficulty of actual CCIE written and lab exam questions. Deep-dive into advanced routing, switching, and network design challenges.
Lab Preparation Focus
Questions designed to reinforce concepts you'll implement in the 8-hour hands-on lab. Covers design, deployment, and troubleshooting methodology.
All 5 Domains Covered
Complete coverage of CCIE Enterprise Infrastructure domains: Network Infrastructure, SDI, Transport Technologies, Security, and Automation.
Elite Career Outcomes
CCIE develops advanced networking skills for network architect, engineering, and consulting roles. Pay depends on the role, location, employer, and experience. A certification alone does not guarantee a salary or a job.
CCIE Enterprise Infrastructure Domains
Our practice test covers all domains of the CCIE Enterprise Infrastructure track:
Domain 1: Network Infrastructure (30%)
- Layer 2 Technologies: VLANs, STP (RSTP, MST), EtherChannel, VTP
- Layer 3 Routing: OSPF, EIGRP, BGP (iBGP, eBGP), route redistribution
- Advanced OSPF: Areas, virtual links, LSA types, route summarization
- BGP Advanced: Path attributes, route reflectors, confederations, filtering
- Multicast: IGMP, PIM (Dense, Sparse, SSM), RP configuration
- First Hop Redundancy: HSRP, VRRP, GLBP configuration and tuning
Answer: Configure an OSPF virtual link through Area 1 or Area 2 to connect Area 3 to the backbone. Virtual links use a transit area to extend Area 0 connectivity. The transit area must be a standard area (not stub or NSSA).
router ospf 1
area 1 virtual-link 2.2.2.2 ! Transit area and remote router ID
Domain 2: Software Defined Infrastructure (25%)
- SD-WAN (Viptela): vManage, vBond, vSmart, vEdge architecture
- SD-Access: DNA Center, fabric design, control plane (LISP), data plane (VXLAN)
- LISP: Map-Server, Map-Resolver, ETR, ITR operations
- VXLAN: Overlay networking, VTEP configuration, BGP EVPN
- Cisco DNA Center: Assurance, automation, policy management
- WAN Edge: ZTP, template management, policy-based routing
Answer: LISP (Locator/ID Separation Protocol) serves as the control plane protocol in SD-Access, providing host tracking and mobility. It separates endpoint identity (EID) from network location (RLOC), enabling endpoints to move across the fabric while maintaining connectivity. The fabric control plane node acts as the LISP Map-Server/Map-Resolver.
Domain 3: Transport Technologies and Solutions (15%)
- MPLS: LDP, RSVP-TE, label distribution and forwarding
- MPLS VPNs: L3VPN (VRF, RD, RT), L2VPN (VPLS, EVPN)
- DMVPN: Phase 1/2/3, NHRP, mGRE, spoke-to-spoke tunnels
- IPsec VPN: IKEv1/IKEv2, crypto maps, VTI, GRE over IPsec
- Segment Routing: SR-MPLS, SRv6, traffic engineering
- QoS: Classification, marking, queuing, policing, shaping
Domain 4: Infrastructure Security (15%)
- Device Hardening: Control plane policing, management plane protection
- AAA: TACACS+, RADIUS, local authentication
- Access Control: Standard/extended ACLs, VACL, RACL
- Network Security: 802.1X, MAB, WebAuth, DHCP snooping, DAI
- Firewall Integration: Zone-based firewall concepts
- Secure Network Access: TrustSec, SGT, SGACL
Domain 5: Infrastructure Automation and Programmability (15%)
- Network Programmability: Python, APIs (REST, NETCONF, RESTCONF)
- Automation Tools: Ansible, Terraform for network automation
- Data Models: YANG models, OpenConfig, Cisco native models
- Cisco DNA Center APIs: Intent APIs, assurance APIs
- Scripting: Python scripts for network operations
- CI/CD: Pipeline concepts for network infrastructure
import requests
from requests.auth import HTTPBasicAuth
url = "https://router/restconf/data/Cisco-IOS-XE-ospf-oper:ospf-oper-data/ospf-state/ospf-instance"
headers = {"Accept": "application/yang-data+json"}
response = requests.get(url, auth=HTTPBasicAuth('admin', 'password'), headers=headers, verify=False)
print(response.json())
The CCIE Certification Journey
Understanding the complete CCIE path is essential for planning your preparation:
Step 1: ENCOR Written Exam (350-401)
- Questions: 90-110 questions
- Duration: 120 minutes
- Cost: Check current provider booking fees
- Validity: Written exam pass is valid for 3 years to attempt the lab
- Note: This is the same exam as the CCNP Enterprise core
Step 2: CCIE Lab Exam
- Duration: 8 hours in a single day
- Modules: Design → Deploy → Operate and Optimize
- Cost: Check current provider booking fees
- Location: Cisco lab facilities worldwide
- Equipment: Real Cisco routers, switches, and software
- Pass Rate: Not published in Cisco’s exam guidance
CCIE Lab Exam Breakdown
The 8-hour lab exam consists of three integrated modules:
Design skills
Create network designs based on given requirements. Design skills are assessed as part of the lab. The designs inform your configuration work.
Deployment skills
Configure network infrastructure from scratch based on requirements. This includes routing protocols, switching, VPNs, security, and automation. All configurations must be completed without internet access.
Operations and optimization skills
Troubleshoot complex network issues and optimize configurations. You'll diagnose problems across multiple technologies and implement fixes within time constraints.
CCIE Preparation Strategy
A structured approach over 12-24 months is typical for lab preparation:
Months 1-3: Foundation and Written Exam
- Pass the ENCOR 350-401 written exam
- Master CCNP-level concepts thoroughly
- Begin lab environment setup (CML, VIRL, or physical equipment)
Months 4-9: Deep Technology Study
- Study each CCIE domain in depth (6-8 weeks per domain)
- Complete vendor documentation and configuration guides
- Build increasingly complex lab topologies
- Practice 10-20 hours per week minimum
Months 10-18: Lab Practice Intensive
- Use lab workbooks and practice scenarios
- Time yourself on full-length practice labs
- Focus on troubleshooting methodology
- Consider attending a CCIE bootcamp
- Set a hands-on practice schedule based on the skills you need to improve
Final Month: Exam Readiness
- Complete timed 8-hour practice labs
- Review weak areas identified in practice
- Prepare mentally for the marathon exam day
- Schedule lab exam at Cisco facility
CCIE Career Opportunities
CCIE certification opens doors to elite networking positions. Consider these roles:
- CCIE Network Architect: varies by role, location, and experience
- Principal Network Engineer: varies by role, location, and experience
- Network Consulting Engineer: varies by role, location, and experience
- Technical Solutions Architect: varies by role, location, and experience
- Cisco TAC Engineer: varies by role, location, and experience
- Independent CCIE Consultant: varies by role, location, and experience
Top employers include Cisco, major service providers (AT&T, Verizon), global consulting firms, Fortune 500 enterprises, and federal government agencies.
Available CCIE Tracks
Cisco offers multiple CCIE specialization tracks:
- CCIE Enterprise Infrastructure: Most popular track, covering enterprise networking
- CCIE Enterprise Wireless: Wireless network design and deployment
- CCIE Data Center: Nexus, ACI, storage networking, UCS
- CCIE Security: Next-gen firewalls, VPN, ISE, threat defense
- CCIE Service Provider: Carrier-scale routing, MPLS, segment routing
- CCIE Collaboration: Unified communications, voice, video
- CCIE Automation (formerly DevNet Expert): Network automation and programmability
Who should study CCIE Enterprise Infrastructure?
- Senior network engineers and architects who want the most prestigious networking certification in the industry
- CCNP-certified professionals ready to demonstrate expert-level design, implementation, and troubleshooting skills
- Network consultants and solutions architects who need to prove top-tier expertise to enterprise clients
- Technical leaders responsible for complex, multi-site enterprise network infrastructure decisions
- Networking professionals aiming for the highest salary potential and career advancement in networking
Build your CCIE Enterprise Infrastructure study plan
- Use dedicated equipment or virtual labs to build configuration speed and accuracy. Set practice goals by skill and verify your results; no fixed number of hours guarantees readiness.
- Master BGP inside and out — BGP is the single most important protocol for CCIE, appearing across routing, MPLS, SD-WAN, and security domains.
- Study MPLS L3VPN and L2VPN architectures thoroughly — understanding PE-CE routing, VRF concepts, and label distribution is essential for the lab exam.
- Practice troubleshooting complex multi-protocol topologies under time pressure — the lab exam requires you to diagnose and fix issues efficiently across multiple technologies.
- Join a CCIE study group or find a study partner. Use a schedule that fits your starting skills and available lab time.
Skills to review
- Network Infrastructure
- Implement and troubleshoot complex switching, routing protocols (EIGRP, OSPF, BGP), and overlay technologies.
- SD-WAN Solution
- Design, deploy, and troubleshoot Cisco SD-WAN solutions including vManage, vSmart, and vEdge components.
- Transport Technologies and Tunnels
- Implement MPLS, DMVPN, GRE, IPsec, and LISP tunneling technologies across enterprise and service provider networks.
- Infrastructure Security
- Implement CoPP, infrastructure ACLs, routing protocol authentication, and device hardening best practices.
- Infrastructure Automation
- Implement network programmability with Python, APIs, YANG models, and automation tools like Ansible and NSO.
- Infrastructure Services
- Implement multicast, QoS, network services, and infrastructure monitoring using SNMP, NetFlow, and streaming telemetry.
Try these CCIE Enterprise Infrastructure knowledge questions
Choose your answer, then review the explanation. These are independent learning examples, not official exam questions or a replacement for hands-on labs.
Frequently Asked Questions
What is the CCIE certification process?
CCIE requires passing a qualifying written exam (ENCOR 350-401) followed by an 8-hour hands-on lab exam. The written exam is the same as the CCNP Enterprise core. The lab tests real-world design, deployment, and troubleshooting skills.
How long does it take to prepare for the CCIE lab?
Most candidates spend 12-24 months preparing, with 500-1000+ hours of hands-on practice. This typically includes studying, lab practice, and potentially attending bootcamps. Full-time focused preparation can reduce this to 6-9 months.
What is the CCIE lab exam format?
The Enterprise Infrastructure lab is an 8-hour hands-on assessment of design and deployment, operation, and optimization skills. Follow Cisco’s current lab instructions for module timing, scoring, permitted resources, and delivery mode. Design is assessed; it is not an unscored warm-up.
What is the CCIE lab pass rate?
Cisco does not provide a public first-attempt pass rate on the referenced exam page. Treat unsourced percentages and worldwide holder estimates with caution. Use timed labs and objective-based checks to assess your own preparation.
What is the average CCIE salary?
Pay depends on the role, location, employer, and experience. Compare current job listings for your target role. A certification alone does not guarantee a salary or a job.
How long is CCIE certification valid?
CCIE uses a 3-year recertification cycle. Cisco provides exam and continuing-education combinations; the CE-only expert route requires 120 credits. Check Cisco’s current recertification policy for the full options.
What CCIE tracks are available?
Tracks include: Enterprise Infrastructure (most popular), Enterprise Wireless, Data Center, Security, Service Provider, Collaboration, and CCIE Automation (formerly DevNet Expert). Each has a dedicated lab exam.
Should I get CCNP before CCIE?
Yes, CCNP-level knowledge is essential. The CCIE qualifying exam (ENCOR) is the CCNP core exam. Most successful candidates have 5+ years experience and hold CCNP or equivalent.
Do I need an account to use these samples?
You can read these examples without an account. Create an account to save progress in Smart Practice. The Free plan includes 15 questions per day; see Pricing for current plan features.
Can I study CCIE Enterprise Infrastructure on my phone?
This page works on a phone, tablet, or computer. Review the examples between longer study sessions. Use a suitable lab environment for hands-on configuration and troubleshooting.
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