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Articles by Paul Richard
42 articles
Reference Models in Computer Network
In computer networks, reference models provide a conceptual framework that standardizes communication between heterogeneous networks. These models define how data should flow through different layers of network architecture, ensuring interoperability between different systems and technologies. The two most widely adopted reference models are: OSI Model − A theoretical seven-layer model TCP/IP Protocol Suite − A practical four-layer model used on the Internet OSI Model The OSI (Open System Interconnection) model was developed by the International Standards Organization (ISO). It provides a layered networking framework that conceptualizes how communication should occur between heterogeneous systems through ...
Read MoreBasic Internet Usage
The Internet has revolutionized how we communicate, work, learn, and entertain ourselves. It provides a global network infrastructure that enables billions of users to access information, services, and applications from anywhere in the world. Understanding basic Internet usage involves knowing the various services available and how they can be utilized effectively for different purposes. Key Areas of Internet Usage The Internet finds applications across numerous domains of modern life: Communication − Email, instant messaging, video calls, and social networking platforms Education and Research − Online courses, digital libraries, academic databases, and collaborative research Business and ...
Read MoreCSMA with Collision Avoidance (CSMA/CA)
Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) is a network protocol for carrier transmission that operates in the Medium Access Control (MAC) layer. In contrast to CSMA/CD (Carrier Sense Multiple Access/Collision Detection) that deals with collisions after their occurrence, CSMA/CA prevents collisions prior to their occurrence. CSMA/CA is primarily used in wireless networks where collision detection is difficult or impossible due to the hidden terminal problem and the inability to simultaneously transmit and receive on the same channel. How CSMA/CA Works The algorithm of CSMA/CA follows these steps: When a frame is ready, ...
Read MoreHow to use formnovalidate attribute in HTML?
The formnovalidate attribute in HTML is a boolean attribute that disables form validation for a specific submit button. When applied to a submit button, it overrides the form's validation requirements, allowing the form to be submitted without validating any required fields or input constraints. This attribute is particularly useful when you have multiple submit buttons in a form and want some buttons to bypass validation (such as "Save as Draft" or "Cancel" buttons) while others enforce validation (like "Submit" buttons). Syntax Following is the syntax for the formnovalidate attribute − Submit The ...
Read MoreHow to mark text superscript in HTML?
The tag in HTML is used to mark text as superscript, which appears raised above the normal line of text and is typically rendered in a smaller font size. This element is commonly used for mathematical expressions, footnote references, ordinal numbers, and chemical formulas. Syntax Following is the syntax for the superscript tag − superscript text The tag requires both opening and closing tags. The text content placed between these tags will be displayed as superscript. Basic Superscript Example Following example demonstrates basic usage of the tag for mathematical ...
Read MoreHow to set all outline properties in a single declaration with JavaScript?
To set all outline properties in one declaration, use the outline property. It sets the following properties: outline-width, outline-style, and outline-color. Syntax element.style.outline = "width style color"; Parameters The outline property accepts three values in any order: width - thickness (thin, medium, thick, or length value like 2px) style - line style (solid, dashed, dotted, double, groove, ridge, inset, outset) color - outline color (color name, hex, rgb, rgba) Example You can try to run the following code to learn ...
Read MoreHow to use Meta Tag to redirect an HTML page?
Page redirection is a situation where you clicked a URL to reach a page X but internally you were directed to another page Y. It happens due to page redirection. To use a META Tag to redirect your site is quite easy. With this, use the http-equiv attribute to provide an HTTP header for the value of the content attribute. ...
Read MoreHow to get the value of the type attribute of a link in JavaScript?
To get the value of the type attribute of a link in JavaScript, use the type property. The type attribute specifies the MIME type of the linked document, such as "text/html" for HTML documents or "text/css" for stylesheets. Syntax element.type Example: Getting Link Type Attribute You can access the type attribute of a link using getElementById() and the type property: TutorialsPoint var myVal = document.getElementById("anchorid").type; console.log("Value ...
Read MoreHow to set the distance between lines in a text with JavaScript?
To set the distance between lines in text, use the lineHeight CSS property via JavaScript. This property controls the vertical spacing between lines of text within an element. Syntax element.style.lineHeight = value; The lineHeight value can be: Number: Multiplier of font size (e.g., "2" = 2x font size) Pixels: Fixed height (e.g., "30px") Percentage: Relative to font size (e.g., "150%") Example: Setting Line Height with Button Click Line Height Demo ...
Read MoreHow to get Natural logarithm of 2 in JavaScript?
To get the natural logarithm of 2 in JavaScript, use the Math.LN2 property. This built-in constant returns the natural logarithm of 2, which is approximately 0.693. Syntax Math.LN2 Return Value The Math.LN2 property returns a number representing the natural logarithm of 2, approximately 0.6931471805599453. Example Here's how to access the natural logarithm of 2: JavaScript Math LN2 Property ...
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