CEH · domain
Introduction to Ethical Hacking
Practise Certified Ethical Hacker CEH Introduction to Ethical Hacking practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.
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What this domain covers
What to know about Introduction to Ethical Hacking
Introduction to Ethical Hacking questions test whether you can apply the concept in context, not just recognise a definition.
How the topic appears in realistic exam-style scenarios.
Which detail in the question changes the correct answer.
How to eliminate plausible but wrong options.
How to connect the question back to the wider exam objective.
Watch out for
Common Introduction to Ethical Hacking exam traps
- ▸Answering from memory before reading the full scenario.
- ▸Missing a constraint such as cost, availability, security, scope or command context.
- ▸Choosing a broad answer when the question asks for the most specific fix.
- ▸Ignoring why the wrong options are tempting.
Question index
All Introduction to Ethical Hacking questions (10)
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A security analyst suspects that an attacker is scanning their network. They notice a large number of TCP SYN packets being sent to various ports on a single host, but no SYN-ACK responses are returned. Which type of scan is most likely being used?
Medium2Based on the exhibit, what type of attack is being attempted?
Hard3Refer to the exhibit. An ethical hacker runs the shown Nmap scan against a target. Which port state indicates that the port is reachable but no service is listening?
Hard4You are a penetration tester hired by a financial services company to assess the security of their external web application. The application is a customer portal hosted on a Linux server with Apache 2.4.6 and PHP 7.2. During reconnaissance, you discover that the server responds to HTTP OPTIONS requests and the Allow header includes PUT and DELETE methods. The application uses a MySQL database backend. You also find a file upload feature in the profile section that accepts JPEG images. While testing, you notice that uploading a file with a .php extension returns a '403 Forbidden' error, but uploading a file with .php5 or .phtml extension succeeds. The uploaded files are stored in /uploads/ directory. What should be your next step to escalate the attack?
Easy5Drag and drop the steps to set up a reverse shell using Netcat into the correct order.
Medium6Which THREE of the following are essential phases in the ethical hacking methodology as defined by EC-Council?
Medium7During a penetration test, an ethical hacker needs to evade an IDS that detects port scans based on the number of packets per second. Which technique would be most effective to avoid detection?
Hard8Drag and drop the steps to perform a TCP three-way handshake into the correct order.
Medium9You are an ethical hacker hired to assess the security of a mid-sized company's internal network. The company has three departments: Sales, Engineering, and HR, each on separate VLANs. The network uses a single firewall with default-deny rules, but inter-VLAN routing is allowed for specific ports (e.g., HR needs to access Sales database on TCP 1433). During reconnaissance, you discover that the Engineering VLAN has a web server running on port 80 that is accessible from all VLANs. You also find that the Sales VLAN has a file share (SMB) on port 445 that is accessible only from HR. The firewall logs show numerous failed SSH attempts from an external IP to the Engineering web server. Which action should you recommend as the most effective immediate step to reduce the attack surface?
Medium10A company wants to test the security of its web application by simulating attacks from an external perspective. They have no prior knowledge of the internal network or application architecture. Which type of test should they perform?
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Frequently asked questions
- What does the Introduction to Ethical Hacking domain cover on the CEH exam?
- Introduction to Ethical Hacking questions test whether you can apply the concept in context, not just recognise a definition.
- How many questions are in this domain?
- This page lists all 10 Introduction to Ethical Hacking questions in the CEH question bank. The actual exam draws from this domain proportionally to its weighting in the official exam blueprint.
- What is the best way to practise this domain?
- Start with a short focused session (10 questions) to identify gaps, then work through explanations. Repeat with a longer session once the weak areas feel solid.
- Can I practise only Introduction to Ethical Hacking questions?
- Yes — the session launcher on this page filters questions to this domain only. Choose any session length for inline explanations and scoring.