EC-COUNCIL

EC-Council Certified Network Defender

CND

The EC-Council Certified Network Defender (CND) certification validates the skills IT and systems administrators need to defend networks with a security-first mindset. This vendor-neutral, hands-on program covers network attacks, perimeter and endpoint security, data protection, and incident response across local, cloud, and OT environments. Earning CND demonstrates your ability to apply blue-team defense and countermeasure strategies that prevent, detect, and remediate threats.

Practice Free Questions

7Domains

20Objectives

204Practice pages

980Free questions

CND free practice questions

Choose any objective and open any question page — no sign-in required.

Network Attacks and Defense Strategies

53 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–53

Administrative Network Security

55 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–55

Technical Network Security

45 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45

Network Perimeter Security

39 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–39

Endpoint Security Windows Systems

45 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45

Endpoint Security Linux Systems

47 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–47

Endpoint Security Mobile Devices

52 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–52

Endpoint Security IoT Devices

53 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–53

Administrative Application Security

41 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–41

Data Security

53 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–53

Enterprise Virtual Network Security

41 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–41

Enterprise Cloud Security

43 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–43

Enterprise Wireless Network Security

39 questions · 8 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–39

Network Traffic Monitoring and Analysis

48 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–48

Network Logs Monitoring and Analysis

47 questions · 10 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–47

Incident Response and Forensics Investigation

66 questions · 14 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–55 56–60 61–65 66–66

Business Continuity and Disaster Recovery

59 questions · 12 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–55 56–59

Risk Anticipation with Risk Management

45 questions · 9 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45

Threat Assessment with Attack Surface Analysis

52 questions · 11 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–52

Threat Prediction with Cyber Threat Intelligence

57 questions · 12 pages

Questions 1–5 6–10 11–15 16–20 21–25 26–30 31–35 36–40 41–45 46–50 51–55 56–57

Want a smarter study session?Try adaptive questions aimed at your weak spots, the illustrated book, and readiness you can trust.

Continue Free Practice

Percentages reflect share of the current practice bank, not official exam weightings. Every page above is a live, crawlable practice page (20 objectives · 204 pages).

EC-Council Certified Network Defender

CND free practice questions

Domain 1 · Network Security Fundamentals and Defense Strategy16% of practice bank · 3 objectives · 153 questions16%

Domain 2 · Perimeter and Endpoint Security24% of practice bank · 5 objectives · 236 questions24%

Domain 3 · Application and Data Security10% of practice bank · 2 objectives · 94 questions10%

Domain 4 · Virtual, Cloud and Wireless Network Security13% of practice bank · 3 objectives · 123 questions13%

Domain 5 · Traffic and Log Monitoring and Analysis10% of practice bank · 2 objectives · 95 questions10%

Domain 6 · Incident Response, Forensics and Continuity13% of practice bank · 2 objectives · 125 questions13%

Domain 7 · Risk and Threat Management16% of practice bank · 3 objectives · 154 questions16%