CDN Security & Performance Optimization

Question 1

What is a key goal of CDN security?

Accepted Answer

Protect from cyber threats

Answer

A key goal of CDN security is to protect web content and infrastructure from various cyber threats, ensuring the integrity and availability of services. This includes defending against attacks like DDoS, preventing unauthorized access, and securing data in transit with SSL/TLS encryption. Robust security measures are crucial for maintaining user trust and ensuring uninterrupted content delivery.

Question 2

What is a Distributed Denial of Service (DDoS) attack?

Accepted Answer

Flooding server with traffic

Answer

A Distributed Denial of Service (DDoS) attack aims to overwhelm a target server or network with a massive flood of internet traffic. This traffic originates from multiple compromised computer systems, making it difficult to block. The goal is to make the targeted service or website unavailable to legitimate users by consuming all its resources.

Question 3

How does SSL/TLS enhance CDN security?

Accepted Answer

Encrypt data transmission

Answer

SSL/TLS (Secure Sockets Layer/Transport Layer Security) protocols create an encrypted connection between a user's browser and the CDN server, as well as between the CDN server and the origin server. This encryption protects data in transit from eavesdropping and tampering. By ensuring data confidentiality and integrity, SSL/TLS significantly enhances the security of content delivered via a CDN.

Question 4

What is the role of web application firewalls (WAF) in CDN?

Accepted Answer

Filter malicious traffic

Answer

A Web Application Firewall (WAF) acts as a protective shield for web applications by monitoring and filtering HTTP traffic. In a CDN, a WAF inspects incoming requests and blocks malicious traffic, such as SQL injection, cross-site scripting (XSS), and other application-layer attacks. This prevents harmful requests from reaching the origin server, enhancing security and maintaining application availability.

Question 5

How does caching improve performance?

Accepted Answer

Reduce load and speed delivery

Answer

Caching improves performance by storing copies of frequently accessed content on CDN edge servers, which are geographically closer to users. When a user requests content, it can be served directly from the cache, eliminating the need to fetch it from the origin server. This reduces the load on the origin server and significantly decreases content delivery times, resulting in faster page loads and a better user experience.

(CDN) Content Delivery Network Certification Practice Test

(CDN) Content Delivery Network Certification Practice Test

CDN Security & Performance Optimization