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Quizzes > Computers & Technology > Computers & IT

Are You a Hacker? Test Your Cyber Skills Now!

Ready to prove your hacking skills? Try our online hacker test!

Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper cut illustration of hacker tools and code symbols on dark blue background for free online hacker quiz challenge

The Ultimate Hacker Quiz helps you check your cyber skills across network exploits, encryption basics, web flaws, and threat detection. Play to see where you stand and spot gaps to practice before exams or interviews. Want more practice? Try a related quiz .

What is the default port number for SSH?
23
443
80
22
SSH uses port 22 by default for secure remote logins, as designated by the IANA. This distinguishes it from services like Telnet which use port 23. Knowing default ports is fundamental in network scanning and security assessments.
What does OSINT stand for?
Open Source Intelligence
On-Site Inspection Tools
Open Systems Interoperability Network
Operational Security Information
OSINT refers to gathering intelligence from publicly available sources like websites, social media, and public records. It's a core skill for reconnaissance in hacking engagements. Proper OSINT can reveal useful target information without direct interaction.
Which protocol is used for secure web browsing?
HTTP
HTTPS
SSH
FTP
HTTPS is HTTP over TLS/SSL, encrypting data between the client and server to secure web traffic. It prevents eavesdropping and tampering. Modern browsers indicate HTTPS connections with a padlock icon.
What is social engineering?
Using psychological manipulation to trick people into revealing confidential information
Designing social networks to mimic corporate intranets
The practice of sending malicious code hidden in social media posts
Engineering social media platforms for data mining
Social engineering exploits human psychology to persuade individuals into divulging sensitive data or performing risky actions. It often bypasses technical defenses by targeting trust. Phishing is a common example.
Which tool is commonly used for network scanning?
John the Ripper
Wireshark
Nmap
Metasploit
Nmap (Network Mapper) is a versatile tool for discovering hosts and services on a network by sending packets and analyzing responses. It supports scans like TCP SYN and UDP. Nmap is essential for the reconnaissance phase.
What does SQLi stand for?
Secure Query Language Intrusion
SQL Iteration
Structured Query Language Injection
Simple Query Lookup
SQL Injection (SQLi) is a technique that exploits vulnerabilities in an application's database layer by injecting malicious SQL queries. It can allow attackers to read, modify, or delete database data. Prevention relies on parameterized queries and input validation.
What is a common tool for password cracking with GPU support?
Aircrack-ng
Hydra
John the Ripper
Hashcat
Hashcat is a high-performance password cracking tool that leverages GPU acceleration to test millions of hashes per second. It supports various hashing algorithms and attack modes. GPUs significantly speed up brute-force and dictionary attacks.
During a TCP SYN scan, what response indicates an open port?
SYN-ACK
RST
FIN
ACK
In a SYN scan, an open port responds with a SYN-ACK packet to signal readiness to establish a connection. A closed port typically replies with RST. This half-open scanning method is stealthier.
Which SQL injection technique uses UNION to extract data?
UNION-based injection
Boolean-based blind injection
Error-based injection
Time-based blind injection
Union-based SQL injection leverages the UNION operator to combine the results of the original query with malicious queries. Attackers can retrieve data from other tables using this method. Proper input sanitization prevents it.
In XSS attacks, what does XSS stand for?
eXtensible Server Scripting
Cross Server Script
Cross-Site Scripting
XML Site Scripting
Cross-Site Scripting (XSS) is a vulnerability that allows attackers to inject malicious scripts into webpages viewed by other users. It can lead to session hijacking and data theft. Contextual output encoding mitigates XSS risks.
What is a reverse shell?
A shell that executes commands in a sandbox
A local shell spawned with elevated privileges
A shell session initiated from the target back to the attacker
A shell that binds to a port on the attacker's machine
A reverse shell connects from the compromised system back to the attacker's listener, bypassing firewalls that block inbound connections. The attacker then gains remote command execution. It's essential for post-exploitation.
What tool is used to intercept and modify HTTP requests on the fly?
Wireshark
Burp Suite
Metasploit
Nmap
Burp Suite is a web proxy that allows interception, modification, and replay of HTTP/HTTPS traffic between the browser and web server. It's widely used for web application testing. Plugins extend its functionality.
Which phase of hacking involves finding vulnerabilities in systems?
Scanning
Reconnaissance
Exploitation
Enumeration
Scanning involves probing networks and hosts to identify open ports, services, and potential vulnerabilities. It follows reconnaissance and prepares for enumeration and exploitation. Tools like Nmap are used extensively.
What is the purpose of fuzz testing?
Sending malformed inputs to discover software vulnerabilities
Performing SQL injection attacks at scale
Intercepting network traffic for analysis
Scanning for open ports automatically
Fuzz testing feeds random or malformed data into software to trigger unexpected behavior, crashes, or memory corruption. It helps uncover security bugs and stability issues. Open-source tools like AFL automate fuzzing campaigns.
In a stack-based buffer overflow, which register typically holds the return address on x86?
ESP
EIP
EBX
EAX
On 32-bit x86 architectures, the EIP register stores the next instruction address (return pointer). Overwriting it via a buffer overflow lets attackers redirect execution flow. Modern defenses like ASLR randomize EIP to mitigate this.
What is ROP chaining in exploit development?
A method of network scanning using return packets
A technique chaining small instruction sequences to bypass DEP
A SQL injection variant using row operations
A way to inject large shellcode into the heap
Return-Oriented Programming (ROP) uses existing code snippets (gadgets) ending in 'ret' to execute arbitrary logic, bypassing Data Execution Prevention (DEP). Attackers chain multiple gadgets to perform complex tasks without injecting shellcode.
Which technique can be used to bypass DEP by spraying memory?
DNS amplification
SQL injection
Format string attack
Heap spraying
Heap spraying fills the heap with the attacker's payload in predictable locations, making it more likely that execution jumps to it even with DEP enabled. It's often used in browser exploits.
What is the function of shellcode in an exploit?
To serve as a payload executed in memory to achieve attacker goals
To brute-force user credentials
To scan the network for open ports
To decrypt SSL traffic
Shellcode is a small piece of machine code injected by an exploit to perform actions like spawning a shell or downloading malware. It executes in the context of the compromised process. Proper encoding and evasion techniques hide it from defenses.
Which encryption algorithm is symmetric?
RSA
AES
ECC
DSA
AES (Advanced Encryption Standard) is a symmetric block cipher using the same key for encryption and decryption. It is widely used for secure communications. RSA and ECC are asymmetric algorithms that use key pairs.
What is privilege escalation?
Mapping network shares for reconnaissance
Intercepting HTTPS traffic
The process of gaining higher-level permissions on a system
Injecting SQL queries into a database
Privilege escalation is exploiting vulnerabilities to elevate user rights from lower to higher privilege levels, like from user to root or SYSTEM. It's a critical step for full system compromise. Patches and least-privilege policies mitigate it.
What does the term C2 mean in cyber attacks?
Confidentiality and Integrity
Command and Control
Control and Command
Checkpoint and Recovery
C2 stands for Command and Control, the infrastructure through which attackers send commands to compromised systems and receive data. It can be hosted on compromised servers or cloud platforms. Disrupting C2 channels is key in incident response.
What is a rootkit?
A network scanning toolkit
A tool for encrypting disk volumes
Malicious software designed to hide its presence and maintain privileged access
A type of SQL injection payload
Rootkits operate at the kernel or user level to conceal processes, files, or network connections from system monitoring tools. They ensure persistent, undetected access for attackers. Kernel-mode rootkits are especially stealthy.
Which kernel exploitation technique bypasses SMEP protections?
Return-oriented Programming
Heap spraying
SQL injection
Return-to-user (ret2usr)
SMEP (Supervisor Mode Execution Protection) prevents the kernel from executing code in user-space. The ret2usr technique transfers execution back to user-space code that's mapped as executable, bypassing SMEP. It's an advanced kernel exploit method.
What type of malware uses the UEFI or BIOS to persist across reboots?
Logic bomb
Ransomware
Bootkit
Adware
Bootkits infect the system firmware - UEFI or BIOS - to gain control before the OS loads, ensuring persistence across reinstalls and reboots. They are extremely difficult to detect or remove. Firmware integrity checks can thwart them.
Which side-channel attack exploits cache timing differences to leak information?
Prime+Probe
Flush+Reload
Rowhammer
Branch prediction attack
Flush+Reload measures cache access times by flushing a shared memory line and then reloading it to see if it's cached, revealing victim process memory usage patterns. It's a powerful side-channel against cryptographic implementations.
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Study Outcomes

  1. Understand Encryption and Coding Fundamentals -

    Grasp the basic principles of encryption algorithms and coding logic featured in the hacker quiz to strengthen your cyber foundation.

  2. Analyze Network Security Vulnerabilities -

    Examine common weaknesses in network configurations and protocols highlighted in the cybersecurity quiz to recognize real-world risks.

  3. Evaluate Hacking Techniques and Tools -

    Differentiate between various hacking methods and software applications presented throughout the online hacker test for informed decision-making.

  4. Apply Penetration Testing Strategies -

    Implement step-by-step problem-solving approaches to simulate ethical hacking scenarios and reinforce practical skills.

  5. Assess Your Cyber Skills and Quiz Performance -

    Review your results from the hacking skills test to identify strengths and pinpoint areas for further development.

Cheat Sheet

  1. Symmetric vs. Asymmetric Encryption Fundamentals -

    Symmetric encryption uses one shared key for both encryption and decryption (e.g., AES-256), while asymmetric relies on a public/private key pair (e.g., RSA-2048). A handy mnemonic is "Same key for Symmetric, Separate keys for Asymmetric" (SS). Reviewing NIST SP 800-57 guidelines can boost your confidence before diving into any hacker quiz or hacking skills test.

  2. OSI Model & Common Protocols -

    Understanding the seven OSI layers (Physical to Application) is crucial for packet analysis and network defense; remember "Please Do Not Throw Sausage Pizza Away." Key protocols like TCP, UDP and HTTP/HTTPS play central roles in an online hacker test scenario. Cisco's documentation and MIT OpenCourseWare networking lectures are excellent industry”trusted resources for this topic.

  3. Top Web Vulnerabilities (OWASP Top Ten) -

    Familiarize yourself with injection flaws (SQLi), cross-site scripting (XSS) and CSRF - these account for the majority of real-world breaches. For example, appending "' OR '1'='1' --" to login fields demonstrates a basic SQL injection. OWASP's official site is a go-to reference when prepping for a cybersecurity quiz or "are you a hacker quiz."

  4. Ethical Hacking Methodology -

    Follow the five phases - Reconnaissance, Scanning, Gaining Access, Maintaining Access, Covering Tracks - summed up by "Really Sneaky Hackers Always Cover." This systematic approach, endorsed by the SANS Institute, helps you stay organized and legal as you test your skills. It's a must-know framework for any hacking skills test or online hacker test.

  5. Cryptographic Hashing & Salting -

    Hashes like SHA-256 or bcrypt convert data into fixed-size digests; adding a unique salt thwarts rainbow-table attacks. Remember: "Salt before hash for tasty security." RFC 6234 and NIST guidelines offer clear, academic”level explanations to reinforce your mastery before taking a hacker quiz.

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