Exam Code: 112-51
Exam Name: Network Defense Essentials (NDE) Exam
Certification Provider: ECCouncil
Corresponding Certification: ECCouncil NDE

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Updated: Sep 16, 2026

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ECCouncil 112-51 Exam Overview:

Certification Vendor:	EC-Council
Exam Name:	Network Defense Essentials (NDE) Exam
Exam Number:	112-51
Exam Format:	Multiple Choice Questions (MCQ), Proctored
Exam Duration:	120 minutes
Certificate Validity Period:	3 years
Passing Score:	70%
Available Languages:	Japanese, Korean, Simplified Chinese, English
Real Exam Qty:	75
Related Certifications:	Digital Forensics Essentials (DFE) Certified Network Defender (CND) Ethical Hacking Essentials (EHE)
Exam Price:	$75 USD (varies by region); $299 USD including training
Recommended Training:	Official NDE Training Course
Exam Registration:	Official EC-Council Registration
Sample Questions:	ECCouncil 112-51 Sample Questions
Exam Way:	Online remote proctored or in-person at authorized EC-Council exam centers
Pre Condition:	No prior cybersecurity knowledge, IT work experience, or prerequisite exams required
Official Syllabus URL:	https://www.eccouncil.org/train-certify/network-defense-essentials-nde/

ECCouncil 112-51 Exam Syllabus Topics:

Topic	Details
Topic 1	Administrative Controls for Network Security: This section addresses the creation and application of security policies, standards, processes, and recommendations for compliance officers and security policy makers to safeguard network assets. It also entails being aware of the legal and regulatory frameworks around network security.
Topic 2	Administrative Controls for Network Security: This section gives an overview of IAM ideas, components, and its function in network resource security for security architects and IAM administrators.
Topic 3	Network Security Fundamentals: This component assesses an IT professional's knowledge of the principles behind network security, as well as the dangers and weaknesses connected to networks. This section aims to provide network engineers and security experts with an understanding of the various network security protocols, their purposes, and the ways in which they contribute to the overall security of the network.\| Identification, Authentication, and Authorization: This part addresses the basic concepts, jargon, and models associated with identifying, authenticating, and authorizing users and systems in a network environment. It is intended for security administrators and access control managers.\| Identity and Access Management (IAM) Concepts: An overview of IAM concepts, components, and their function in network resource security is given in this section for security architects and IAM administrators.
Topic 4	Physical Controls for Network Security: This section highlights the significance of physical security measures for safeguarding network infrastructure and data, especially for physical security workers and building managers. It addresses several physical security measures and how to apply them.
Topic 5	Technical Controls for Network Security: This section is intended for network engineers and security architects and focuses on technical safeguards for network systems and data.

Reference: https://cert.eccouncil.org/

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