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Questions and Answers
What is the purpose of protocols in computer networking?
What is the purpose of protocols in computer networking?
- To define rules and formats for communication and data transfer (correct)
- To optimize server performance
- To create user interfaces for web applications
- To enhance security through encryption
Which command is used to install Apache on Ubuntu?
Which command is used to install Apache on Ubuntu?
- apt-get install apache2
- sudo apt install apache2 (correct)
- sudo apt-get apache-server
- sudo install apache2
What does the GET method do in HTTP?
What does the GET method do in HTTP?
- Create new resources
- Delete existing resources
- Read resources (correct)
- Update resources
Where are the global settings for Apache stored?
Where are the global settings for Apache stored?
What does 'mods-available' directory contain?
What does 'mods-available' directory contain?
What does the command 'sudo a2enmod module_name' do?
What does the command 'sudo a2enmod module_name' do?
Which of the following is true about virtual sites on an Apache server?
Which of the following is true about virtual sites on an Apache server?
What is the function of the 'sites-available' directory?
What is the function of the 'sites-available' directory?
Flashcards
Web Server
Web Server
A software application that stores, delivers and processes webpages. It responds to requests from web browsers and sends back the appropriate webpage.
Protocol
Protocol
An API that outlines the rules for communication and data exchange between two or more computers.
HTTP vs. HTTPS
HTTP vs. HTTPS
HTTP stands for "Hypertext Transfer Protocol", is a protocol for transmitting files (e.g., HTML documents, images, etc.) and other web-related data between web browsers and web servers. HTTPS is a secure version of HTTP.
POST Method
POST Method
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Apache Web Server
Apache Web Server
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Apache2.conf
Apache2.conf
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Apache Modules
Apache Modules
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Virtual Hosts
Virtual Hosts
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Study Notes
Web Server Systems and Components
- Web servers provide client-requested web pages
- Apache is a prevalent web server
- Web servers handle requests from web browsers
- Servers process data from a database and assemble the page
- This process delivers the page as a response
Web Server Market Share
- Apache, Microsoft, Sun, Nginx, Google, Cloudflare, NCSA, LiteSpeed, and OpenResty are prominent web server companies
- Market share fluctuates over time (graphs show this)
- Trends vary, companies rise and fall, demonstrating the dynamic competition
Web Server Operation
- Web servers receive requests from web browser clients
- They retrieve data, page templates
- Construct the page elements from the components
- The response is transmitted back to the client
Protocols
- Web protocols define data formats and transmission procedures
- Protocols such as FTP, HTTP, IMAP, TCP-IP, and UDP
- Key components of server-client communication are shown in a diagram
HTTP and HTTPS
- HTTP forms the basis of communication between browser and web server
- HTTPS employs a secure communication channel
- Methods include GET, POST, PATCH, DELETE
- SSL provides cryptographic security and encryption
Apache Server Installation
- Use the command
sudo apt-get install apache2to install Apache in Ubuntu - Manage Apache services using
systemctlcommands (start, stop, status) - Verify installation by accessing
http://localhostin a browser
Apache Server Functionality
- Apache offers standard functionality like file serving
- Modules extend standard functionality with additional capabilities
- Provides support for multiple websites (virtual hosts)
- Configuration files (e.g., /etc/apache2) modify server behavior
Apache Server Configuration
apache2.confholds global server settings- Configuration files in
conf-availableandconf-enableddirectories mods-availableandmods-enabledhold modules configurations- Additional configuration options (
envvars) are available - Configuration files contain commands and settings that control operations
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Description
Test your knowledge of web server systems and their components, including server operation, market share, and protocols. This quiz covers key concepts like HTTP, FTP, and client-server communication. Perfect for students and professionals wanting to reaffirm their understanding of web infrastructure.
