dynamic web request steps

What does the client type in the browser?

• IP address

• URL or search query

• Website title

• Browser extension

Answer explanation

In a browser, clients typically enter a URL or a search query to access websites. They can also use an IP address directly, but website titles and browser extensions are not entered in the address bar.

What does the browser look up first?

• The Domain Name System (DNS)

• The browser cache

• The IP address

• The website's HTML structure

Answer explanation

The browser first looks up the Domain Name System (DNS) to resolve the domain name into an IP address. This step is crucial for locating the server hosting the website before any other actions, like checking the cache or HTML structure.

What does the browser request from the server?

• The browser requests a user login from the server.

• The browser requests a resource (e.g., webpage, image) from the server.

• The browser requests a software update from the server.

• The browser requests a database connection from the server.

Answer explanation

The correct choice is that the browser requests a resource (e.g., webpage, image) from the server. This is the primary function of a browser, which is to retrieve and display content from the web.

Where does the request go after leaving the client's browser?

• The request goes to a content delivery network.

• The request goes to a database directly.

• The request goes to a local cache.

• The request goes to a web server.

Answer explanation

After leaving the client's browser, the request typically goes to a web server, which processes it and responds. Other options like a content delivery network or local cache may be involved later, but the initial destination is the web server.

What does the web server do with the request?

• The web server processes the request and sends back a response.

• The web server ignores the request completely.

• The web server forwards the request to another server without processing.

• The web server deletes the request immediately.

Answer explanation

The correct choice is that the web server processes the request and sends back a response. This is the fundamental role of a web server, which involves handling incoming requests and delivering the appropriate content.

What happens if the page has PHP scripting?

• The server ignores the PHP code and serves the raw text.

• The server executes the PHP code and sends the resulting output to the client.

• The PHP code is converted to JavaScript before being sent to the client.

• The client executes the PHP code directly in the browser.

Answer explanation

When a page contains PHP scripting, the server processes the PHP code and executes it. The output generated from this execution is then sent to the client, which is why the correct answer is that the server executes the PHP code.

Who executes the PHP code?

• Database server

• PHP interpreter

• Web server

• Browser

Answer explanation

The PHP interpreter is responsible for executing PHP code. It processes the code on the server side, converting it into HTML before sending it to the web server, which then delivers it to the browser.

What does the PHP code sometimes include?

• variables, functions, classes, libraries

• PHPmyAdmin

• php.net tutorial

• access to a database

Answer explanation

PHP code often includes variables, functions, classes, and libraries to build applications. Additionally, it provides access to a database, enabling dynamic data management and storage.

What does the MySQL database engine do?

• It stores images and videos.

• It generates HTML pages for websites.

• The MySQL database engine manages data and processes SQL queries.

• It compiles programming languages.

Answer explanation

The MySQL database engine is designed to manage data efficiently and process SQL queries, making it essential for database operations. The other options do not accurately describe its primary function.

What does the web server do with the final page?

• The web server stores the final page on its hard drive.

• The web server prints the final page for the user.

• The web server sends the final page to the client's browser.

• The web server deletes the final page after processing.

Answer explanation

The web server processes requests and, upon generating the final page, it sends this page to the client's browser for display. This is the primary function of a web server in serving web content.