[NEW] CCIE Enterprise Infrastructure [2026]

CCIE Enterprise Infrastructure Detailed Exam Domain Coverage

• Enterprise Network Architecture & Design (25%) Topics include Layer 2 and Layer 3 topology design, WAN technologies and SD-WAN architecture, Network segmentation and virtual routing/forwarding (VRF), and High availability and resiliency strategies,

• Routing & Switching Technologies (30%) Topics include OSPF, IS-IS, and BGP advanced configuration, Ethernet technologies (VLANs, VxLAN, QinQ), MPLS Layer 3 VPNs and traffic engineering, and Multicast routing and optimization,

• Network Services & Security (25%) Topics include Identity Services Engine (ISE) and AAA policies, Secure device management (SSH, PKI, TrustSec), Infrastructure services (NTP, DHCP, DNS, SNMP), and QoS design and implementation,

• Automation, Assurance, & Troubleshooting (20%) Topics include Cisco DNA Center and SD-Access automation, Network telemetry, streaming telemetry, and NetFlow, Python scripting and RESTCONF/NETCONF APIs, and Advanced troubleshooting methodologies,

CCIE Enterprise Infrastructure Practice Exams

Preparing for the CCIE Enterprise Infrastructure certification is a significant milestone for any network engineer. I designed this comprehensive question bank to closely mirror the actual exam environment, helping you validate your advanced design, implementation, and troubleshooting skills. These practice tests deeply cover the core domains essential for the exam, including routing, switching, security, and automation.

I know that simply memorizing answers is not enough for an expert-level certification. That is why I have included detailed explanations for every single option across all questions, so you understand exactly why an answer is correct and why the alternatives fall short. The focus here is on mastering scalable architectures, high‑performance traffic engineering, and modern network programmability. By using these practice tests, you will build the practical knowledge and confidence needed to tackle the exam and pass on your first attempt.

Practice Questions Preview

• Question 1: In the Cisco SD-WAN architecture, which plane is directly responsible for distributing routing information and policy updates to the WAN Edge routers?

  • Options:

    • A) Data Plane

    • B) Management Plane

    • C) Control Plane

    • D) Orchestration Plane

    • E) Forwarding Plane

    • F) Security Plane

  • Correct Answer: C

  • Explanation:

    • Overall Explanation: The Cisco SD-WAN architecture is divided into distinct planes to provide scalability and centralized control. The control plane, managed by the vSmart controller, is responsible for calculating best paths, distributing routing information, and enforcing centralized policies across the fabric.

    • Option A is incorrect because the data plane (WAN Edge routers) handles the actual forwarding of user traffic, not the distribution of policies,

    • Option B is incorrect because the management plane (vManage) is a centralized dashboard used for configuration and monitoring, not real-time route distribution,

    • Option C is correct because the control plane (vSmart) securely distributes routing and policy information to edge devices,

    • Option D is incorrect because the orchestration plane (vBond) authenticates devices joining the network and orchestrates initial connectivity,

    • Option E is incorrect because the forwarding plane is simply another term for the data plane,

    • Option F is incorrect because there is no separate entity called the security plane in this specific functional breakdown, security is integrated across all planes,

• Question 2: In a BGP routing environment, which attribute is evaluated first in the standard path selection process to determine the best path to a destination network?

  • Options:

    • A) Local Preference

    • B) AS-Path length

    • C) Multi-Exit Discriminator (MED)

    • D) Origin type

    • E) Weight

    • F) Router ID

  • Correct Answer: E

  • Explanation:

    • Overall Explanation: The BGP best path selection algorithm follows a strict sequence of attribute evaluations to choose the optimal route. On Cisco routers, the proprietary Weight attribute is always evaluated before any standard BGP attributes.

    • Option A is incorrect because Local Preference is evaluated second, immediately after Weight,

    • Option B is incorrect because AS-Path length is evaluated third, after Local Preference,

    • Option C is incorrect because MED is evaluated much later in the process, typically sixth,

    • Option D is incorrect because Origin type is evaluated fourth, after AS-Path length,

    • Option E is correct because Weight is a Cisco-proprietary attribute that is always checked first, with the highest weight preferred,

    • Option F is incorrect because the Router ID is evaluated near the very end of the selection process as a tiebreaker,

• Question 3: When utilizing NETCONF for network programmability and device management, which data encoding format is primarily used for transmitting configuration data and operational state?

  • Options:

    • A) JSON

    • B) YAML

    • C) XML

    • D) Protocol Buffers

    • E) CSV

    • F) TOML

  • Correct Answer: C

  • Explanation:

    • Overall Explanation: NETCONF (Network Configuration Protocol) provides mechanisms to install, manipulate, and delete the configuration of network devices. By standard definition (RFC 6241), NETCONF uses Extensible Markup Language (XML) for encoding its messages and data payloads.

    • Option A is incorrect because JSON is typically associated with RESTCONF, not natively with standard NETCONF payloads,

    • Option B is incorrect because YAML is often used in automation tools like Ansible but is not the native protocol encoding for NETCONF,

    • Option C is correct because XML is the mandated encoding format for NETCONF Remote Procedure Calls (RPCs) and data,

    • Option D is incorrect because Protocol Buffers (Protobuf) are commonly used for streaming telemetry (like gRPC), not standard NETCONF,

    • Option E is incorrect because CSV is a plain text tabular format and lacks the hierarchical structure required for network configuration modeling,

    • Option F is incorrect because TOML is used for minimal configuration files, not structured programmatic network management via NETCONF,

• Welcome to the Mock Exam Practice Tests Academy to help you prepare for your CCIE Enterprise Infrastructure course,

• You can retake the exams as many times as you want,

• This is a huge original question bank,

• You get support from instructors if you have questions,

• Each question has a detailed explanation,

• Mobile-compatible with the Udemy app,

I hope that by now you’re convinced! And there are a lot more questions inside the course,

Courze