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Eccouncil ICS-SCADA Exam Questions

Exam Name: Eccouncil ICS/SCADA Cyber Security Exam
Exam Code: ICS-SCADA
Related Certification(s): Eccouncil Network Security Certification
Certification Provider: Eccouncil
Actual Exam Duration: 120 Minutes
Number of ICS-SCADA practice questions in our database: 75 (updated: May. 22, 2026)
Expected ICS-SCADA Exam Topics, as suggested by Eccouncil :
  • Topic 1: Introduction to ICS/SCADA Network Defense: This topic covers IT security model, ICS/SCADA security model, security posture, risk management, risk assessment and security policy.
  • Topic 2: TCP/IP 101: Its primary focus is on TCP/IP network. This topic covers ICS/SCADA protocols, TCP/IP layering, TCP/IP protocol architecture, RFCs and STDs.
  • Topic 3: Introduction to Hacking: It discusses scanning, footprinting, intelligence gathering, hacking methodology, exploitation, covering tracks, and enumeration.
  • Topic 4: Vulnerability Management: System vulnerabilities, desktop vulnerabilities, CVE, ICS/SCADA vulnerability sites, ICS/SCADA vulnerability uniqueness, and challenges of vulnerability management within ICS/SCADA are its sub-topics.
  • Topic 5: Standards and Regulations for Cybersecurity: It discusses ISO 27001, ICS/SCADA, NERC CIP, CFATS, ISA99, and NIST SP 800-82.
  • Topic 6: Securing the ICS Network: This topic delves into physical security, monitoring, legacy machines, ISO roadmap, and vulnerability assessment.
  • Topic 7: Bridging the Air Gap: It covers guard, Data diode, and next-generation firewalls.
  • Topic 8: Introduction to Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS): The topic covers network node, advantages of IDS, and limitations of IDS.
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Stephen Hall

11 days ago
I just cleared the EC Council ICS SCADA Cyber Security exam, and the trickiest part was translating TCP IP basics into real plant network scenarios. Doing a quick lab review of common ICS protocols and segmentation patterns helped more than rereading notes.
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Harold Young

25 days ago
TCP/IP 101 showed up as packet trace and subnet problems where you had to point out which header or mask caused a failure, so expect questions on ports, flags, and CIDR math. Focus on mastering TCP vs UDP behavior, common port numbers, and quick subnet calculations. I passed the exam and thanks Pass4Success for a concise question set that sped up my prep.
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William Johnson

1 month ago
Bridging the air gap questions were unexpectedly tricky because they mixed physical controls with network countermeasures. Focusing on practical examples and remembering layered defenses helped me answer them.
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Jason Miller

1 month ago
In my case the standards and regulation items in the Eccouncil ICS-SCADA exam blended ISO language with sector rules which made choices feel very similar.
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Amy Parker

1 month ago
Indeed, the questions that tied air gap concepts to practical tradeoffs felt like they wanted you to think across IT and OT at the same time.
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Matthew Moore

23 days ago
Personally I found the IDS versus IPS scenarios confusing because they tested when to prevent and when to alert instead of focusing on detection mechanisms.
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Michael Phillips

1 month ago
Also the TCP/IP basics had a few trick items about port numbers and layered responsibilities that snuck up on me.
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Monica Parker

17 days ago
Remember that vulnerability management questions often focused on risk prioritization and compensating controls more than on the newest patch.
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Billye

2 months ago
Stay focused and disciplined in your studies. Pass4Success resources kept me on track throughout my preparation.
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Dana

2 months ago
Nervousness lingered until I started using pass4success simulations, which clarified complex concepts and boosted my confidence with incremental success—you can reach the same result.
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Cathrine

2 months ago
I passed the Eccouncil ICS/SCADA Cyber Security exam, and the Pass4Success practice questions were crucial. One question that puzzled me was about the basics of hacking. It asked about the first step in the hacking process. I wasn't entirely sure but still managed to pass.
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Freida

3 months ago
I felt uncertain about time management at first, but pass4success trained me with timed drills and analytics that made pacing second nature—trust your prep and push through.
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Merissa

3 months ago
I battled with network architecture diagrams and tracing data flow; some questions tried to trip you up with decoys. pass4success practice drilled those diagrams until I could read them fast.
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Elfriede

3 months ago
The doctrine questions around NIST SP 800-82 specifics vs generic ICS guidance were hard. pass4success practice exams highlighted the exact phrasing that matters.
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Tien

3 months ago
Simulating real-world incidents with backup strategies got me; the tricky Qs about failover under cyber-physical attack were brutal. Pass4Success practice exams trained my decision-making.
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Lonny

4 months ago
The control system hardening questions, especially about defense-in-depth in ICS, were tough. pass4success practice helped me map controls to typical ICS environments effectively.
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Junita

4 months ago
The thought of the exam was daunting, but pass4success's targeted practice and performance feedback helped me stay calm and focused; stay motivated and you'll achieve your goal.
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Nida

4 months ago
I found the risk assessment and scoring part hard, lots of tricky weighting and qualitative vs quantitative. Pass4Success practice exams clarified the scoring logic and helped time management.
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Emily

5 months ago
Securing PLCs and understanding fieldbus vulnerabilities is brutal. The toughest questions on spoofing and replay attacks were tamed by the detailed explanations in Pass4Success practice tests.
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Margart

5 months ago
Happy to share that I passed the ICS/SCADA Cyber Security exam! The Pass4Success practice questions were spot on. There was a question about cybersecurity standards and regulations, specifically asking which standard is most commonly used for ICS/SCADA systems. I had to guess a bit but it worked out in the end.
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Kent

5 months ago
I worried I wouldn't recall key ICS/SCADA controls, yet Pass4Success gave me structured bite-size lessons and realistic scenarios that boosted my confidence—you've got this, keep going.
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Odelia

5 months ago
The worst was incident response flow, especially tabletop-style questions that mix containment with forensics. Pass4Success practice exams gave me the exact reasoning path to pick the right sequence.
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Tom

6 months ago
Initial nerves hit me when I started the mock exams, but Pass4Success helped me map out weak spots and reinforce them with practical labs—remember, steady effort leads to success.
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Raelene

6 months ago
Don't underestimate the importance of practice. Pass4Success exams were instrumental in my successful ICS/SCADA certification.
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Brunilda

6 months ago
Revise your weak areas relentlessly. pass4success sims were crucial for identifying and addressing my knowledge gaps.
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Jimmie

6 months ago
I felt a knot in my stomach during the first practice questions, but Pass4Success's comprehensive reviews and drills turned confusion into clarity—believe in your prep and you'll rise to the challenge.
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Elmer

7 months ago
Confidence is key! The pass4success practice questions boosted my self-assurance going into the exam.
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Lura

7 months ago
My hands were sweaty and I doubted my memory at first, yet Pass4Success provided clear study paths and timed simulations that built steady confidence; stay persistent and you'll conquer it!
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Adria

7 months ago
I struggled with asset inventory and control mappings—the exam loves ambiguous questions on network segmentation. Pass4Success practice prepared you by drilling those mapping scenarios until they felt second nature.
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Eric

7 months ago
The hardest part for me was cryptographic functions in ICS protocols; the tricky multiple-choice trap questions about TLS handshakes almost caught me out. Pass4Success practice exams helped me spot the common distractors and reinforce the correct steps.
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Lemuel

8 months ago
I was incredibly nervous before the exam, but Pass4Success structured practice and real-world scenarios gave me the confidence I needed to stay composed under pressure and tackle every section with focus—you can do this too, keep pushing!
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Lynsey

8 months ago
Manage your time wisely during the exam. Pass4Success practice tests helped me learn to pace myself.
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Carisa

8 months ago
Passing the ICS/SCADA exam was a game-changer for me. Pass4Success practice exams were a lifesaver - they really prepared me for the real deal.
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Desmond

8 months ago
I successfully passed the Eccouncil ICS/SCADA Cyber Security exam, and the Pass4Success practice questions were a big help. One question that caught me off guard was about securing the ICS/SCADA network. It asked about the best practices for implementing network segmentation. I wasn't entirely sure but still passed.
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Cecily

9 months ago
Successfully cleared the ICS/SCADA Cyber Security exam. Pass4Success, thanks for the efficient prep resources!
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Brittni

9 months ago
Just cleared the ICS/SCADA Cyber Security exam! The Pass4Success practice questions were incredibly useful. There was a question about the TCP/IP model, specifically asking which layer handles error detection and correction. I had to think hard but eventually got through it.
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Ahmed

11 months ago
EC-Council ICS/SCADA certification achieved! Pass4Success, your questions aligned perfectly with the exam.
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Elbert

12 months ago
Passed the ICS/SCADA exam today. Couldn't have done it without Pass4Success's relevant study materials.
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Valene

1 year ago
Just became EC-Council ICS/SCADA certified! Pass4Success, your practice tests were a game-changer.
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Salina

1 year ago
EC-Council ICS/SCADA exam conquered! Pass4Success, your materials were invaluable for last-minute prep.
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Alishia

1 year ago
ICS/SCADA Cyber Security certification in the bag! Pass4Success, your exam questions were spot on.
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Martha

1 year ago
Success on the EC-Council ICS/SCADA exam! Pass4Success, your resources were key to my quick preparation.
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Leonida

1 year ago
I passed the Eccouncil ICS/SCADA Cyber Security exam, thanks to the Pass4Success practice questions. One tricky question was about intrusion detection systems (IDS). It asked how an IDS can be configured to minimize false positives. I wasn't completely sure but still passed.
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Alpha

1 year ago
Thrilled to have passed the ICS/SCADA Cyber Security exam! The Pass4Success practice questions were a great help. There was a question about network defense strategies, specifically asking about the role of firewalls in protecting ICS/SCADA networks. I had to guess a bit but it worked out.
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Janey

1 year ago
Passed my ICS/SCADA exam with flying colors. Huge thanks to Pass4Success for the relevant practice questions!
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Burma

1 year ago
I passed the Eccouncil ICS/SCADA Cyber Security exam, and the Pass4Success practice questions were crucial. One question that puzzled me was about vulnerability management. It asked how often vulnerability assessments should be conducted in an ICS/SCADA environment. I wasn't entirely sure but still managed to pass.
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My

2 years ago
Just passed the ICS/SCADA Cyber Security exam! The Pass4Success practice questions were invaluable. There was a question about the basics of hacking, specifically asking about the first step in the hacking process. I had to think on my feet but managed to get through it.
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Iluminada

2 years ago
EC-Council ICS/SCADA cert achieved! Pass4Success, your prep materials made all the difference.
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Rebbecca

2 years ago
I successfully passed the Eccouncil ICS/SCADA Cyber Security exam, and the Pass4Success practice questions were a big help. One question that caught me off guard was about the various cybersecurity standards and regulations. It asked which standard is most commonly used for ICS/SCADA systems. I wasn't completely sure but still passed.
upvoted 0 times
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Jules

2 years ago
Happy to share that I passed the ICS/SCADA Cyber Security exam! The Pass4Success practice questions were spot on. There was a question about securing the ICS/SCADA network, specifically focusing on the best practices for segmenting the network to minimize risks. I had to guess a bit but it worked out in the end.
upvoted 0 times
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Malinda

2 years ago
Thrilled to have passed the ICS/SCADA Cyber Security exam. Pass4Success, your questions were incredibly helpful.
upvoted 0 times
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Gerardo

2 years ago
I passed the Eccouncil ICS/SCADA Cyber Security exam, thanks to the practice questions from Pass4Success. One challenging question was about the role of IDS and IPS in a network. It asked how an IDS differs from an IPS in terms of response to detected threats. I wasn't entirely sure but still managed to pass.
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Francoise

2 years ago
Aced the EC-Council ICS/SCADA exam today. Pass4Success materials were a lifesaver for quick prep!
upvoted 0 times
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Eulah

2 years ago
Just cleared the ICS/SCADA Cyber Security exam! The Pass4Success practice questions were a lifesaver. There was a tricky question on the exam about the different layers of the TCP/IP model and their functions. Specifically, it asked which layer is responsible for routing packets. I had to think hard but eventually got through it.
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Sanjuana

2 years ago
I recently passed the Eccouncil ICS/SCADA Cyber Security exam, and I must say, the Pass4Success practice questions were incredibly helpful. One question that stumped me was about the effectiveness of air-gapped networks in preventing cyber attacks. It asked how an attacker might still infiltrate an air-gapped system. I was unsure about the exact methods but managed to pass the exam regardless.
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Tequila

2 years ago
The exam covers ICS/SCADA security architecture design. Know about secure remote access solutions. Pass4Success really helped me understand this complex topic. So glad I passed!
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Franchesca

2 years ago
Just passed the EC-Council ICS/SCADA Cyber Security exam! Thanks Pass4Success for the spot-on practice questions.
upvoted 0 times
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Herminia

2 years ago
Passing the Eccouncil ICS/SCADA Cyber Security exam was a great achievement for me, and I owe a big thanks to Pass4Success for their helpful practice questions. The exam covered topics like ICS/SCADA security model, risk assessment, and RFCs. One question that I recall was about the different types of security controls that can be implemented in ICS/SCADA networks. Despite feeling uncertain about my response, I was able to pass the exam successfully.
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Emerson

2 years ago
My experience with the Eccouncil ICS/SCADA Cyber Security exam was challenging but rewarding. With the assistance of Pass4Success practice questions, I was able to grasp concepts such as security posture, risk assessment, and TCP/IP protocol architecture. One question that I remember from the exam was about the importance of security policy in ICS/SCADA networks. Although I had some doubts about my answer, I was relieved to find out that I passed the exam.
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Dorthy

2 years ago
Passed my ICS/SCADA exam with flying colors! Pass4Success, your questions were spot-on. Thanks for the time-saving resources!
upvoted 0 times
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Janna

2 years ago
I recently passed the Eccouncil ICS/SCADA Cyber Security exam with the help of Pass4Success practice questions. The exam covered topics such as IT security model, risk management, TCP/IP network, and ICS/SCADA protocols. One question that stood out to me was related to the TCP/IP layering and how it impacts ICS/SCADA security. Despite being unsure of the answer at first, I managed to pass the exam successfully.
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Tresa

2 years ago
Passed my ICS/SCADA Cyber Security exam! Thanks Pass4Success for the spot-on practice questions. Saved me weeks of study time!
upvoted 0 times
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Cherry

2 years ago
Successfully cleared the exam thanks to Pass4Success's efficient prep materials. A key topic is ICS risk assessment. Expect scenario-based questions where you'll need to identify threats, vulnerabilities, and appropriate mitigation strategies for specific ICS setups.
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Charlesetta

2 years ago
Eccouncil exam success! Pass4Success, your practice tests were a lifesaver. Prepared me thoroughly in record time!
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Kirk

2 years ago
ICS/SCADA certification achieved! Pass4Success questions were a perfect match for the real exam. Grateful for the efficient prep!
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Jacki

2 years ago
Just aced the Eccouncil ICS/SCADA exam. Pass4Success materials were invaluable. Couldn't have done it so quickly without you!
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Free Eccouncil ICS-SCADA Exam Actual Questions

Note: Premium Questions for ICS-SCADA were last updated On May. 22, 2026 (see below)

Question #1

Which of the following ports are used for communications in Modbus TCP?

Reveal Solution Hide Solution
Correct Answer: D

Modbus TCP is a variant of the Modbus family of simple, networked protocols aimed at industrial automation applications. Unlike the original Modbus protocol, which runs over serial links, Modbus TCP runs over TCP/IP networks.

Port 502 is the standard TCP port used for Modbus TCP communications. This port is designated for Modbus messages encapsulated in a TCP/IP wrapper, facilitating communication between Modbus devices and management systems over an IP network.

Knowing the correct port number is crucial for network configuration, security settings, and troubleshooting communications within a Modbus-enabled ICS/SCADA environment.

Reference

Modbus Organization, 'MODBUS Application Protocol Specification V1.1b3'.

'Modbus TCP/IP -- A Comprehensive Network protocol,' by Schneider Electric.


Question #2

The vulnerability that led to the WannaCry ransomware infections affected which protocol?

Reveal Solution Hide Solution
Correct Answer: D

WannaCry is a ransomware attack that spread rapidly across multiple computer networks in May 2017.

The vulnerability exploited by the WannaCry ransomware was in the Microsoft Windows implementation of the Server Message Block (SMB) protocol.

Specifically, the exploit, known as EternalBlue, targeted a flaw in the SMBv1 protocol. This flaw allowed the ransomware to spread within corporate networks without any user interaction, making it one of the fastest-spreading and most harmful cyberattacks at the time.

Reference

Microsoft Security Bulletin MS17-010 - Critical: https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2017/ms17-010

National Vulnerability Database, CVE-2017-0144: https://nvd.nist.gov/vuln/detail/CVE-2017-0144


Question #3

Which of the ICS/SCADA generations is considered monolithic?

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Correct Answer: B

The first generation of ICS/SCADA systems is considered monolithic, primarily characterized by standalone systems that had no external communications or connectivity with other systems. These systems were typically fully self-contained, with all components hard-wired together, and operations were managed without any networked interaction. Reference:


Question #4

Which mode within IPsec provides a secure connection tunnel between two endpoints AND protects the sender and the receiver?

Reveal Solution Hide Solution
Correct Answer: B

IPsec (Internet Protocol Security) has two modes: Transport mode and Tunnel mode.

Tunnel mode is used to create a secure connection tunnel between two endpoints (e.g., two gateways, or a client and a gateway) and it encapsulates the entire IP packet.

This mode not only protects the payload but also the header information of the original IP packet, thereby providing a higher level of security compared to Transport mode, which only protects the payload.

Reference

Kent, S. and Seo, K., 'Security Architecture for the Internet Protocol,' RFC 4301, December 2005.

'IPsec Services,' Microsoft TechNet.


Question #5

Which of the IPsec headers contains the Security Parameters Index (SPI)?

Reveal Solution Hide Solution
Correct Answer: B

IPsec uses two main protocols to secure network communications: Authentication Header (AH) and Encapsulating Security Payload (ESP).

Both AH and ESP use a Security Parameters Index (SPI), which is a critical component of their headers. The SPI is a unique identifier that enables the receiver to select the correct security association for processing incoming packets.

AH provides authentication and integrity, while ESP provides confidentiality, in addition to authentication and integrity. Both protocols use the SPI to manage these functions securely.

Reference

'IPsec Security Architecture,' RFC 4302 (AH) and RFC 4303 (ESP).

'IPsec Explained,' by Juniper Networks.


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