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Last Updated: Oct 13, 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 |
| Real Exam Qty: | 75 |
| Available Languages: | English |
| Passing Score: | 70% |
| Exam Price: | $299 USD |
| Exam Format: | Multiple Choice |
| Exam Duration: | 120 minutes |
| Related Certifications: | Certified Network Defender (CND) Network Defense Essentials (NDE) |
| Certificate Validity Period: | 3 Years |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online Proctored Exam |
| Pre Condition: | No prerequisites or prior cybersecurity experience required. |
| Official Syllabus URL: | https://www.eccouncil.org/train-certify/network-defense-essentials-nde/ |
ECCouncil 112-51 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Network Infrastructure and Communication | - Network Components
|
| Topic 2: Network Security Technologies | - Defense Mechanisms
|
| Topic 3: Introduction to Network Defense and Security | - Network Security Fundamentals
|
| Topic 4: Identification, Authentication and Access Control | - Identity Management
|
| Topic 5: Network Monitoring and Defense | - Monitoring Techniques
|
| Topic 6: Incident Response and Business Continuity | - Response Procedures
|
| Topic 7: Network Threats and Attacks | - Cyber Threats
|
| Topic 8: Administrative, Physical and Technical Controls | - Security Controls
|
112-51 Exam — Questions and Straight Answers
120 minutes for 75 questions — tighter than it looks once hard items start eating minutes. Train the pace now: assign each question a time budget, flag the stubborn ones, and run full timed sessions in the Exam4Docs engine so test day feels like practice, not pressure.
8 domains make up the ECCouncil Network Defense Essentials (NDE) blueprint, led by Network Infrastructure and Communication, Incident Response and Business Continuity, Network Monitoring and Defense. The weights show where the vendor concentrates its questions — that's where your hours should concentrate too. The complete outline above details every subtopic.
Delivery is automatic: successful payment emails the product to your mailbox within a minute — install on unlimited computers, and if 2 hours pass with nothing (check spam first), contact us. If you fail: sit the corresponding 112-51 exam within 60 days of purchase, then submit a scanned enrollment slip and official Score Report PDF within 2 days of the exam — full refund, processed within 7 days. Excluded: exams taken within 3 days of purchase, name mismatches between candidate and payer, and free or expired products. Alternatively, exchange for two equal-value exam products free and keep your updates.
The 112-51 exam is ECCouncil's official certification exam for the ECCouncil NDE credential, positioned at the Fundamental / Entry-Level level. It has never been considered easy — which is precisely why it impresses employers. It also relates to Network Defense Essentials (NDE), Certified Network Defender (CND).
The enrollment fee is $299 USD — not cheap — and the passing score is 70%. Since the fee applies in full to every attempt, each retake doubles down on the cost. The smarter sequence: drill the 77 practice questions from Exam4Docs first, book the exam second.
Yes — hesitating is normal, and the free demo exists for exactly that. Download it, get a feel for the ECCouncil Network Defense Essentials (NDE) questions, and decide with confidence. Purchases include 365 days of free updates, with new versions announced by email; after expiry, renew at 50% off.
No prerequisites or prior cybersecurity experience required. Rules like these do change — confirm the current criteria on the official exam page (official 112-51 exam page) before registering.
ECCouncil Network Defense Essentials (NDE) Sample Questions:
Messy, a network defender, was hired to secure an organization's internal network. He deployed an IDS in which the detection process depends on observing and comparing the observed events with the normal behavior and then detecting any deviation from it.
Identify the type of IDS employed by Messy in the above scenario.
- A. Signature-based
- B. Application proxy
- C. Stateful protocol analysis
- D. Anomaly-based
Correct Answer: D 🗳️
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Mark, a network administrator in an organization, was assigned the task of preventing data from falling into the wrong hands. In this process, Mark implemented authentication techniques and performed full memory encryption for the data stored on RAM.
In which of the following states has Steve encrypted the data in the above scenario?
- A. Data in rest
- B. Data in use
- C. Data in transit
- D. Data inactive
Correct Answer: B 🗳️
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John is working as a security professional in FinCorp Ltd. He was instructed to deploy a security solution on their corporate network that provides real-time monitoring, correlation of events, threat detection, and security incident response activities.
Which of the following security solutions helps John in the above scenario?
- A. SIEM
- B. VPN
- C. SOCKS
- D. MDM
Correct Answer: A 🗳️
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Bob, a security professional, was recruited by an organization to ensure that application services are being delivered as expected without any delay. To achieve this, Bob decided to maintain different backup servers for the same resources so that if one backup system fails, another will serve the purpose.
Identify the IA principle employed by Bob in the above scenario.
- A. Authentication
- B. Confidentiality
- C. Availability
- D. Integrity
Correct Answer: C 🗳️
Which of the following practices helps security professionals protect mobile applications from various attacks?
- A. Use containerization for critical corporate data
- B. Use query string while handling sensitive data
- C. Always cache app data
- D. Allow apps to save passwords to avoid multiple logins
Correct Answer: A 🗳️
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