CND Study Guide 2026

Everything you need to pass the CND exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

CND exam key facts

The EC-Council Certified Network Defender (CND) exam, code 312-38, has 100 multiple-choice questions. Source
Candidates have 4 hours to complete the EC-Council Certified Network Defender (CND) 312-38 exam. Source
The cut score for the EC-Council Certified Network Defender (CND) exam is set per exam form and ranges from 60% to 85%. Source
An ECC exam voucher for the EC-Council Certified Network Defender (CND) exam costs $550, and candidates who have not attended official training must also pay a non-refundable $100 eligibility application fee. Source
The EC-Council Certified Network Defender (CND) certification is valid for three years from the date of certification. Source

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📋 CND Exam Format at a Glance

100

Questions

240 min

Time Limit

70%

Passing Score

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📚 CND Topics to Study (30)

Incident Response & Disaster Recovery · 21 cards Network Security Controls & Protocols · 21 cards Risk Management & Compliance · 21 cards Incident Response & Disaster Recovery · 9 cards Network Security Controls & Protocols · 9 cards Risk Management & Compliance · 9 cards Threat Assessment & Vulnerability Management · 9 cards Wireless Network Security · 7 cards Wireless Network Security · 7 cards Wireless Network Security · 7 cards Access Control & Identity Management · 6 cards Access Control & Identity Management · 6 cards CND Endpoint Security & Hardening · 6 cards CND Endpoint Security & Hardening · 6 cards CND Endpoint Security & Hardening · 6 cards CND Network Defense Infrastructure · 6 cards CND Network Defense Infrastructure · 6 cards CND Network Defense Infrastructure · 6 cards CND Network Forensics & Log Analysis · 6 cards CND Network Forensics & Log Analysis · 6 cards CND Network Forensics & Log Analysis · 6 cards CND Security Operations & Monitoring · 6 cards CND Security Operations & Monitoring · 6 cards CND Security Operations & Monitoring · 6 cards Cryptography & PKI · 6 cards Cryptography & PKI · 6 cards Threat Detection & Analysis · 6 cards Threat Detection & Analysis · 6 cards Vulnerability Assessment · 6 cards Vulnerability Assessment · 6 cards

✍️ Sample CND Questions & Answers

1. What is the role of penetration testing in threat assessment?

✓ To simulate attacks and identify vulnerabilities in a network or system

Penetration testing, often called ethical hacking, involves authorized simulated cyberattacks against a computer system, network, or web application. Its purpose is to identify exploitable vulnerabilities and security weaknesses that an attacker could leverage. This proactive testing helps organizations understand their security posture and improve defenses before real attacks occur.

2. The Wi-Fi Protected Setup (WPS) PIN method was found to be vulnerable to brute-force attacks requiring fewer than 11,000 guesses rather than 100 million. What design flaw causes this?

✓ The 8-digit PIN is validated in two halves independently, reducing the keyspace

WPS validates the first 4 digits of the PIN separately from the last 4 (minus a checksum digit), reducing the brute-force space from 10^8 to roughly 10^4 + 10^3 = ~11,000 guesses.

3. Which foundational principle is MOST important for success in the Certified Network Defender profession?

✓ Commitment to continuous learning, ethical practice, and quality outcomes

Success in any professional field requires a commitment to continuous learning to stay current, ethical practice to maintain trust and integrity, and a focus on quality outcomes that serve stakeholders and the public interest.

4. Which type of malware analysis runs a suspicious file in an isolated environment to observe its behavior without risking production systems?

✓ Dynamic analysis (sandboxing)

Dynamic analysis executes malware in a controlled sandbox environment to observe real-time behaviors such as file creation, registry changes, and network connections.

5. What distinguishes a Certified Network Defender certified professional from a non-certified practitioner?

✓ Certification validates competency through standardized assessment against established benchmarks

Certification provides objective validation of competency through standardized assessment. While non-certified practitioners may be skilled, certification offers verified evidence that a professional meets established benchmarks for knowledge and performance.

6. What does OSPF use to authenticate routing updates in a secure network deployment?

✓ Pre-shared keys or MD5/SHA HMAC

OSPF supports plain-text passwords and cryptographic authentication using MD5 or SHA HMAC to validate routing neighbors.

🎯 Free CND Practice Tests

Incident Response & Disaster Recovery · 21 questions Network Security Controls & Protocols · 21 questions Risk Management & Compliance · 21 questions Network Security Controls & Protocols · 9 questions Threat Assessment & Vulnerability Management · 9 questions Risk Management & Compliance · 9 questions Incident Response & Disaster Recovery · 9 questions Wireless Network Security · 7 questions Wireless Network Security · 7 questions Wireless Network Security · 7 questions

📖 CND Guides & Articles

Your CND Study Path

1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation

🃏 CND Flashcards (240)🏆 CND Exam Simulation

What Practice Test Geeks adds beyond an AI chat for CND

An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:

A timed, full-length CND mock exam — 100 questions in 240 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
A fixed CND question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
A printable CND cheat sheet you can print or save as a PDF.
CND flashcards built from the same question bank.
Free CND practice tests with the correct answer shown after each question.

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How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

cert.eccouncil.org — Eligibility, fees, renewal, score validity, retake fee, exam format, passing score, time limit, exam information · verified Nov 2026
eccouncil.org — Test delivery · verified Oct 2026