Network Efficiency

What is the primary purpose of using a Content Delivery Network (CDN)?

• To increase server memory capacity

• To improve website aesthetics

• To distribute content closer to users and reduce latency

• To encrypt data between client and server

Which of the following techniques reduces the size of CSS and JavaScript files for faster loading times?

• Minification
• Bundling
• Compression
• Caching

Which HTTP header directive tells the browser to store a resource locally for a specified duration?

• Pragma
• Content-Disposition
• Cache-Control
• Expires

What is lazy loading primarily used for in web development?

• Loading only necessary content when needed

• To preload all resources for faster access later.
• To ensure all images are displayed before the page loads.
• To reduce server load by caching all resources at once.

Which of the following can negatively impact network performance in a web application?

• Excessive API calls and unoptimized queries

• Using a CDN

• Optimizing images

• Minified JavaScript files