Podcast
Questions and Answers
What is the smallest space on a grid called?
What is the smallest space on a grid called?
- Grid Gap
- Grid Cell (correct)
- Grid Track
- Grid Line
Which property is used to create gaps between grid tracks?
Which property is used to create gaps between grid tracks?
- gap
- grid-width
- grid-gap (correct)
- track-space
What does the 'fr' unit represent in a grid layout?
What does the 'fr' unit represent in a grid layout?
- Full row
- Fraction of available space (correct)
- Flexible range
- Fixed ratio of width
Which function is used to repeat grid elements in CSS?
Which function is used to repeat grid elements in CSS?
What is the main purpose of ECMAScript in relation to JavaScript?
What is the main purpose of ECMAScript in relation to JavaScript?
What is the primary function of the Domain Name System (DNS)?
What is the primary function of the Domain Name System (DNS)?
Which HTTP request method is commonly used to update a resource?
Which HTTP request method is commonly used to update a resource?
What are web browsers primarily used for?
What are web browsers primarily used for?
Who is credited with the creation of the World Wide Web?
Who is credited with the creation of the World Wide Web?
What does a web server do?
What does a web server do?
Which port is typically used by web browsers for HTTP connections?
Which port is typically used by web browsers for HTTP connections?
What was a significant consequence of the Dot-Com Bubble?
What was a significant consequence of the Dot-Com Bubble?
Which of the following is NOT an example of web browser software?
Which of the following is NOT an example of web browser software?
How does absolute positioning differ from relative positioning in CSS?
How does absolute positioning differ from relative positioning in CSS?
What is the main function of Flexbox in CSS?
What is the main function of Flexbox in CSS?
Which property is used to define the direction of flex items in a Flex container?
Which property is used to define the direction of flex items in a Flex container?
What does the 'justify-content' property control in a Flex container?
What does the 'justify-content' property control in a Flex container?
How does the 'align-self' property in Flexbox differ from 'align-items'?
How does the 'align-self' property in Flexbox differ from 'align-items'?
What is one of the main advantages of using Grid over traditional CSS layout methods?
What is one of the main advantages of using Grid over traditional CSS layout methods?
What does the 'gap' property in Flexbox and Grid layout control?
What does the 'gap' property in Flexbox and Grid layout control?
Which of the following values can be assigned to the 'flex-direction' property?
Which of the following values can be assigned to the 'flex-direction' property?
Which statement accurately describes PHP?
Which statement accurately describes PHP?
What file extension is commonly used for PHP files?
What file extension is commonly used for PHP files?
Which of the following is a requirement to run PHP code?
Which of the following is a requirement to run PHP code?
How does PHP handle requests from a browser for PHP files?
How does PHP handle requests from a browser for PHP files?
What is the primary purpose of the Internet Protocol (IP)?
What is the primary purpose of the Internet Protocol (IP)?
What is a characteristic feature of server-side scripting languages like PHP?
What is a characteristic feature of server-side scripting languages like PHP?
Which layer of the OSI model is responsible for data delivery reliability?
Which layer of the OSI model is responsible for data delivery reliability?
Which data type in PHP is correctly paired with its example?
Which data type in PHP is correctly paired with its example?
What mechanism does Transmission Control Protocol (TCP) use to allow multiple data types to be sent simultaneously?
What mechanism does Transmission Control Protocol (TCP) use to allow multiple data types to be sent simultaneously?
Which of the following statements about PHP tags is true?
Which of the following statements about PHP tags is true?
Which of the following statements about the Internet is inaccurate?
Which of the following statements about the Internet is inaccurate?
What is the role of the Presentation Layer in the OSI model?
What is the role of the Presentation Layer in the OSI model?
Which of these is NOT a server-side technology associated with web development?
Which of these is NOT a server-side technology associated with web development?
What is the function of a local IP address in networking?
What is the function of a local IP address in networking?
Which OSI model layer handles the actual moving of data across a physical link?
Which OSI model layer handles the actual moving of data across a physical link?
What does the lack of centralized control in the Internet facilitate?
What does the lack of centralized control in the Internet facilitate?
What is the purpose of the preventDefault() method in JavaScript?
What is the purpose of the preventDefault() method in JavaScript?
Which of the following methods is NOT a way to attach an event in JavaScript?
Which of the following methods is NOT a way to attach an event in JavaScript?
What will the following code output if the button is clicked? const btn = document.querySelector('button'); btn.addEventListener('click', function(event) { event.preventDefault(); console.log('Nope.'); });
What will the following code output if the button is clicked? const btn = document.querySelector('button'); btn.addEventListener('click', function(event) { event.preventDefault(); console.log('Nope.'); });
What does the spread operator (...) do in JavaScript?
What does the spread operator (...) do in JavaScript?
How is the rest operator used in JavaScript?
How is the rest operator used in JavaScript?
In the class definition below, what will rect.calcArea() return? class Rectangle { constructor(height, width) { this.height = height; this.width = width; } calcArea() { return this.height * this.width; } } let rect = new Rectangle(20, 40);
In the class definition below, what will rect.calcArea() return? class Rectangle { constructor(height, width) { this.height = height; this.width = width; } calcArea() { return this.height * this.width; } } let rect = new Rectangle(20, 40);
How can mouse events provide additional information?
How can mouse events provide additional information?
Which statement regarding event listeners is correct?
Which statement regarding event listeners is correct?
Flashcards
Port Number
Port Number
A unique number assigned to a program or service running on a device, allowing multiple services to use the same IP address without interfering with each other.
Web Server
Web Server
A computer that delivers web pages to users when they request them through their browsers.
Web Browser
Web Browser
Software used to access, retrieve, and display web content from the World Wide Web.
Domain Name System (DNS)
Domain Name System (DNS)
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Uniform Resource Locator (URL)
Uniform Resource Locator (URL)
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HTTP GET Request
HTTP GET Request
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HTTP POST Request
HTTP POST Request
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HTTP PUT Request
HTTP PUT Request
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What is the Internet?
What is the Internet?
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What is the Internet Protocol (IP)?
What is the Internet Protocol (IP)?
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What are key aspects of the Internet?
What are key aspects of the Internet?
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What are the layers of the OSI model?
What are the layers of the OSI model?
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What is the purpose of the Physical layer?
What is the purpose of the Physical layer?
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What is the purpose of the Data Link layer?
What is the purpose of the Data Link layer?
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What is the purpose of the Network layer?
What is the purpose of the Network layer?
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What is the purpose of TCP?
What is the purpose of TCP?
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Grid Lines
Grid Lines
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Grid Tracks
Grid Tracks
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Grid Cell
Grid Cell
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Grid Gap
Grid Gap
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Grid-template-columns and grid-template-rows
Grid-template-columns and grid-template-rows
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Relative Positioning
Relative Positioning
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Absolute Positioning
Absolute Positioning
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Flexbox
Flexbox
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Flex Container
Flex Container
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Flex Item
Flex Item
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Main Axis (Flexbox)
Main Axis (Flexbox)
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Cross Axis (Flexbox)
Cross Axis (Flexbox)
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Grid Layout
Grid Layout
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Attaching Events
Attaching Events
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Prevent Default Action
Prevent Default Action
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JavaScript Classes
JavaScript Classes
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Spread Operator (... )
Spread Operator (... )
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Rest Operator (... )
Rest Operator (... )
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Mouse Events
Mouse Events
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'this' Keyword in Classes
'this' Keyword in Classes
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DOM Property
DOM Property
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What is PHP?
What is PHP?
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How does PHP work?
How does PHP work?
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What are server-side languages?
What are server-side languages?
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What are client-side languages?
What are client-side languages?
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What is the difference between client-side and server-side languages?
What is the difference between client-side and server-side languages?
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What is a PHP tag?
What is a PHP tag?
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What are the basic data types in PHP?
What are the basic data types in PHP?
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What is the file extension for PHP files?
What is the file extension for PHP files?
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Study Notes
Introduction to the Internet
- A connection of computers using the Internet Protocol (IP)
- IP is the method by which data is sent from one computer to another on the internet
- Key aspects include decentralized control, open standards (anyone can create a new internet device), and everyone can use it with simple software.
Internet Layered Architecture
- OSI Model Layers: The internet uses layers to organize and process data in a structured way.
- Physical: Hardware for sending and receiving data (ethernet, modems, coaxial cables)
- Data Link: Handles data transfer between physical links on a network.
- Network: Determines the physical path data takes to its destination.
- Transport: Ensures data delivery reliability and error correction.
- Session: Manages the setup and termination of connections between communicating endpoints.
- Presentation: Transforms data into a format that the application layer can use (e.g., encryption).
- Application: Layer interacted with by web users (e.g., browser, email, ftp).
Internet Protocol (IP)
- Specifies the format of packets (datagrams) and addressing scheme.
- Local IP addresses are identified by commands such as
ifconfigoripconfig.
Transmission Control Protocol (TCP)
- Adds multiplexing and guaranteed message delivery to the IP protocol.
- Multiplexing allows sending different data types across a single communication channel.
- TCP uses ports to assign each application a unique port number on a device, enabling multiple services to run simultaneously.
- Multiple programs can use the same IP address on a given device.
World Wide Web (WWW)
- Part of the internet that is accessible through websites.
- Evolution through time from the 1960s-2000s, including the development of notable browsers such as Netscape Navigator and Internet Explorer.
- Integral part of modern life
- Web servers are computers serving web pages.
- Web Browser software is used to locate, retrieve and display content.
Hypertext Transfer Protocol (HTTP)
- Protocol that defines message formatting and transmission for web requests.
- HTTP has methods for various tasks such as reading, creating, updating and deleting resources (GET, POST, PUT, PATCH etc.).
- HTTP response codes show server status after handling a request(e.g., 200 OK, 404 Not Found, etc).
- Mime Types help specify data types and content formats (e.g. text/html, text/plain).
Other Web Technologies
- HTML : HyperText Markup Language - used for basic webpage structure
- CSS : Cascading Style Sheets - used to style webpages
- Javascript - used to control the behavior of web pages
- PHP - Server-side language used to dynamically create web pages.
AJAX
- Asynchronous JavaScript and XML (AJAX) makes it possible to update portions of a web page without refreshing the whole page.
- XML, JSON used for representing data for fast and efficient exchange between computers.
- SQL (Structured Query Language): a relational database language for asking, retrieving, or updating data in a structured way.
Javascript Basics
- Types: Number, String, Boolean, Object, and Function.
nullandundefinedare special values. - Operators: Arithmetic, comparison and logical (e.g. +,-,==, !=. ===, !==, &&, ||)
- Control Structures:
if/else,while,forloops. - Arrays: Ordered collections of values. Include operations such as
push,pop,lengthto manipulate arrays.
Objects
- Allows storage of values with named keys.
- Access values using dot notation (object.key) or bracket notation (object["key"]).
Destructuring
- Syntax that unpacks values from arrays or objects into distinct variables.
HTML
(Basic and important elements)
<h1>to<h6>: Headings of varying importance<p>: Paragraphs<img>: Images (with attributes likesrcandalt)<a>: Links for navigation<div>and<span>: Generic containers for grouping content
CSS (Cascading Style Sheets)
- Used to style HTML elements. Includes selectors, properties, and values to control appearance.
- Types of selectors include element selectors, id selectors, class selectors and pseudo-selectors like
a:hover.
Layouts and Positioning
- Normal flow: The default layout where each element takes its normal position.
- Positioning:
positionproperties (relative, absolute, fixed) allow for precise positioning of elements usingtop,bottom,left, andright
Flexbox and Grid Layouts
- Flexbox lays elements out along a single axis.
- Grid lays out elements on a two-dimensional grid(rows and columns)
HTTP Requests/Responses
- HTTP is used for communications between web clients (browsers) and servers.
- GET (for retrieving data), POST (for submitting data), and other types of operations like PUT (to update data) or DELETE.
PHP
- PHP is a server-side scripting language used to create dynamic websites.
Database Management Systems(DBMS)
- Relational database management systems (RDBMSs) organize data in tables with rows (records) and columns (fields).
- SQL (Structured Query Language) is used to query, insert, update, and delete data within these systems.
SQL Queries
- Select statements: retrieve data from tables (e.g.,
SELECT * FROM table_name). - Distincts clauses: filter for unique values.
- Where clauses: filter rows by specific conditions (e.g.,
WHERE column='value').
SQL Joins
- Combine data from multiple tables.
INNER JOIN,LEFT JOIN,RIGHT JOINare different types of joins
Web Application Security
- Issues such as Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF), and SQL Injection, need to be considered.
- Methods like using parameters in queries, escaping user inputs and checking for input types are ways to reduce risk.
Sessions
- Used to maintain state across multiple web page requests.
Security Principles
- Trust nothing and nobody
- Assume worst-case scenarios
- Apply defense in depth
- Principle of least privilege
Web Accessibility
- Design for different user types, use WCAG standards, and ensure web content is usable and accessible for everyone.
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Description
Test your knowledge on essential web development concepts including CSS grid and Flexbox, as well as important web technologies like ECMAScript and DNS. This quiz covers key functionalities and definitions important for any aspiring web developer.
