Web Programming Website And Web Server Programming 5

Question 1

What is the purpose of environment variables in web server deployments?

Accepted Answer

Store configuration values like API keys outside of source code

Answer

Environment variables keep sensitive configuration (database URLs, secret keys) out of version control and allow different values per environment (dev/staging/prod).

Question 2

In HTTP/2, what is multiplexing?

Accepted Answer

Sending multiple requests and responses simultaneously over a single TCP connection

Answer

HTTP/2 multiplexing eliminates HTTP/1.1's head-of-line blocking by allowing concurrent streams over one connection.

Question 3

Which PHP function is used to redirect the user to another URL from server-side code?

Accepted Answer

header('Location: ...')

Answer

header('Location: URL') sends a redirect HTTP header; you typically follow it with exit() to stop further script execution.

Question 4

What is the main advantage of using a Content Delivery Network (CDN) for static web assets?

Accepted Answer

Serves assets from edge servers geographically close to the user, reducing latency

Answer

CDNs cache and serve static content from globally distributed edge nodes, reducing round-trip time for users far from the origin server.

Question 5

In Node.js, what does the `process.env` object contain?

Accepted Answer

The current process's environment variables

Answer

process.env provides access to the operating system environment variables set before or during the Node.js process startup.

Web Programming Practice Test

Web Programming Practice Test

Web Programming Website And Web Server Programming 5