Skip to content

CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Network Basics and Security

A Chennai e-commerce website becomes unreachable because tens of thousands of compromised devices spread across many locations simultaneously send requests to its server. Which description is correct?

This is a distributed denial-of-service attack. Many compromised devices, usually a botnet, flood the server with requests at once and exhaust its bandwidth or processing capacity, making the site unavailable to genuine customers. The other options target interception, database queries or name resolution rather than availability through flooding.

  1. AA distributed denial-of-service attack, because many sources flood the server to exhaust its resourcesCorrect
  2. BA man-in-the-middle attack, because traffic is intercepted between two parties
  3. CA SQL injection attack, because malicious queries alter the database
  4. DA DNS spoofing attack, because users are redirected to a fake site

Explanation

Many compromised devices (a botnet) sending traffic simultaneously to overwhelm a server is a DDoS attack, aimed at availability. Man-in-the-middle targets confidentiality or integrity of communication, SQL injection exploits input handling in database queries, and DNS spoofing redirects users; none describe flooding from many sources.

Did you get it right without looking?

One question tells you little. A timed set on Network Basics and Security shows your real accuracy, how long you take and where you lose marks.

Practise Network Basics and SecurityFree diagnostic mock

More Network Basics and Security questions