HTML, CSS, JavaScript & jQuery: Web Development Essentials

HTML Structure

  • <!DOCTYPE html>: Declares HTML5 version.
  • <html lang="en">: Root element; lang specifies language.
  • <head>: Metadata, links to CSS/JS, SEO content.
  • <meta charset="UTF-8">: Ensures proper character encoding.
  • <meta name="viewport" content="width=device-width, initial-scale=1.0">: Ensures responsiveness.
  • <title>: Defines page title.
  • <body>: Contains visible content.

Common HTML Elements

  • Text Formatting: <h1>-<h6>, <p>, <b>, <i&
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Networking Essentials: CDMA, Error Handling, and Transmission

Networking Essentials

CDMA (Code Division Multiple Access)

Q. Working of CDMA

Ans. Code Division Multiple Access (CDMA) works by assigning a unique code to each user. Here’s how it works:

  1. Data Encoding: Each user’s data is multiplied by a unique spreading code, spreading the signal across a wider frequency band.
  2. Transmission: Multiple users transmit their encoded data over the same frequency band at the same time.
  3. Reception: The receiver uses the corresponding unique code to decode the signal, separating
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HTML Structure: Tables and Forms

Data Table Example

Col1Col2Col3Col4
col1, Col2Col3
col3
Col1Col2Col3Col4

User Data Form

Personal Data Name:

Last Name:

Email:


Status:
Active

Blocked

Canceled

Profile Option 1

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Key Concepts in Network Routing and Load Balancing

Non-Routable Addresses

What are the addresses that are not routable? Broadcast addresses.

Router Behavior with Unroutable Packets

How does a router behave if it is unable to route an IP data packet? It drops the packet and sends a Destination Unreachable ICMP message.

Conditions for Static Route Entry

What are the conditions to be satisfied before a static route is written into a routing table?

  • IP routing must be enabled.
  • The next-hop interface must be reachable.
  • The exit interface must have an IP address
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JavaScript Calculators: Simple & Compound Interest, Postfix Evaluation

Simple and Compound Interest Calculator

Develop a simple and compound interest calculator using HTML, CSS, and JavaScript.

Enter principal amount:
Enter time period:
Enter rate of interest (%):

Simple and Compound Interest Calculator (jQuery)

Develop a simple and compound interest calculator using HTML, CSS, and jQuery.

Simple-Compound-Interest-Calculator-JQ.html

    
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script>
$(document).ready(function(
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Digital Signals, Communication Media, and Computer Networks

Digital Signals

Analog Vs. Digital: The world primarily uses analog signals, while machines use digital signals. We can convert analog signals into digital ones through sampling and quantification. Bit depth determines how much information can be stored for every sample. The more bits used for each sample, the more faithful the digital signal will be to the original.

Communication Media

Between 1835 and 1900, the first 60 years of modern telecommunications, two main types of communication media emerged:

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