Prev Next

DataStructures / Cyber Security Interview Questions

What is Public Key Infrastructure (PKI)?

PKI is the framework of policies, roles, and technology used to create, manage, distribute, and revoke digital certificates that bind public keys to identities.

  • Certificate Authority (CA), issues and signs digital certificates
  • Registration Authority (RA), verifies identity before a certificate is issued
  • Certificate, binds a public key to an entity's identity
  • Certificate Revocation List (CRL), lists certificates that are no longer trusted

PKI is what lets your browser trust that a website's public key really belongs to that website, forming the backbone of HTTPS, code signing, and email encryption.

What does a Certificate Authority (CA) do?
What does a Certificate Revocation List (CRL) contain?

Invest now in Acorns!!! 🚀 Join Acorns and get your $5 bonus!
Acorns Logo

Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!

Earn passively and while sleeping

Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.

Robinhood Logo

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull Logo

Webull! Receive free stock by signing up using the link: Webull signup.

More Related questions...

What is a Firewall? What is CyberSecurity? What are the types of Firewalls? Different Types of Cybersecurity. What is Cryptography? What is Network Security? Explain Information Security. What is Malware? What are the common types of Malware? What is Endpoint Security? What are examples of endpoints in Endpoint security? What is Phishing? What is Ransomware? What are the three main types of endpoint security? What is a Virtual Private Network (VPN)? What are the 5 C's of Cyber Security? What is Multi-Factor Authentication (MFA)? What is a Digital Signature? What is Hashing in Cyber Security? What is a Zero-Day Vulnerability? What is Social Engineering? Define Denial-of-Service (DoS) Attack? What is the purpose of an Intrusion Detection System (IDS)? What is a Honeypot? Describe the CIA Triad in Cyber Security? What is Two-Factor Authentication? What are the types of Access Control models? What is a Security Information and Event Management (SIEM) system? List common types of Cyber Attacks? What is Public Key Infrastructure (PKI)? What is a Man-in-the-Middle (MITM) Attack? What is SQL Injection? What is Cross-Site Scripting (XSS)? What is the difference between IDS and IPS? What is the difference between Symmetric and Asymmetric Encryption? How does SSL/TLS secure communication over the network? Why is the Principle of Least Privilege important? What is the difference between Vulnerability Assessment and Penetration Testing? How does a Firewall differ from a Proxy Server? What is the difference between Authentication and Authorization? When should you use a Web Application Firewall (WAF)? What is the difference between DAC, MAC, and RBAC? Why do we use Salting in password hashing? What happens when a Buffer Overflow attack occurs? How does a Distributed Denial-of-Service (DDoS) Attack differ from a DoS Attack? What is the difference between a Vulnerability, a Threat, and a Risk? How does Zero Trust Architecture change traditional network security? Why should you rotate encryption keys periodically? Explain the lifecycle of an Incident Response process? Explain the internal working of the TLS Handshake? Explain the execution flow of a SQL Injection attack? How can you optimize a SIEM system to reduce alert fatigue? How do you troubleshoot a suspected data breach in its early stages? Which is better and why: Signature-based or Behavior-based Malware Detection? Explain the lifecycle of a Digital Certificate in PKI? Explain the internal working of Kerberos Authentication?
Show more question and Answers...

AI

Comments & Discussions

Interviews Questions

About Javapedia.net

Javapedia.net is for Java and J2EE developers, technologist and college students who prepare of interview. Also this site includes many practical examples.

This site is developed using J2EE technologies by Steve Antony, a senior Developer/lead at one of the logistics based company.

contact: javatutorials2016[at]gmail[dot]com

Kindly consider donating for maintaining this website. Thanks.

Copyright © 2026, javapedia.net, all rights reserved. privacy policy.

DMCA.com Protection Status