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Lecture Video

Introduction

Computer Networks

Local Area Network (LAN) Hardware and Software

Network Operating System

Workstation

Server

Network Interface Card or Adapter

Switch/Hub

Cable

Network Topology

Wide Area Network (WAN)

Wi-Fi Networks

Planning Factors

Network Management

Fault Management

Configuration Management

Performance Management

Security Management

Accounting Management

Network Importance and Vulnerabilities

Common Causes of System Failure

Operator Error

Hardware Failure

Temperature and Relative Humidity

Equipment Cleanliness

Preventative Maintenance Program

Power Problems

Surge Protection

Proper Wiring and Grounding

Uninterruptible Power Supply

Software Bug

System Overload

Insufficient CPU Clock Speed

Inadequate RAM

Slow Mechanical Components

File Fragmentation

Inadequate Disk Storage

Virus

Steps for Virus Recovery

Spyware and Ransomware

Backup Strategies

Backup Frequency

Backup Method

Rotation of Secondary Storage Media

Hardcopy

Computer Security

The Keyboard

Using Obvious Passwords

Not Regularly Changing Passwords

Biometric Technology

The Internet and Communication Lines

Physical Access

IT Compliance

Payment Card Industry Data Security Standards

Merchant Levels

Core Principles and Requirements

Quiz

Welcome to the "Fundamentals of Computer Networks and System Security" course, your comprehensive guide to understanding the backbone of modern digital infrastructure. In today's interconnected world, robust computer networks and stringent system security are not just optional—they are critical to the survival and success of any organization.

Welcome to the "Fundamentals of Computer Networks and System Security" course, your comprehensive guide to understanding the backbone of modern digital infrastructure. In today's interconnected world, robust computer networks and stringent system security are not just optional—they are critical to the survival and success of any organization. This course is meticulously designed to take you from the foundational concepts of Local Area Networks (LAN) and Wide Area Networks (WAN) to the intricate details of network management, system vulnerabilities, and IT compliance. Whether you are an aspiring IT professional, a system administrator looking to brush up on your skills, or a business owner wanting to secure your digital assets, this course offers invaluable insights. You will explore essential hardware and software components, dive deep into network topologies, and learn how to effectively manage faults, configurations, and performance. Furthermore, we tackle the most common causes of system failures—ranging from hardware malfunctions and power problems to malicious threats like viruses, spyware, and ransomware. Beyond just identifying problems, this course equips you with practical solutions. You will master backup strategies, discover best practices for computer security including password management and biometric technology, and navigate the complexities of IT compliance such as Payment Card Industry Data Security Standards (PCI DSS). By the end of this journey, you will possess the knowledge and confidence to build, manage, and secure resilient computer networks. Enroll today to safeguard your digital future!

Module 2: Fundamentals of Computer Networks and System Security

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            <p>Modern organizational infrastructure relies heavily on the seamless integration of computer networks and robust system security protocols. This course provides a comprehensive exploration of the essential components that constitute local and wide area networks, including the hardware, software, and physical media required to maintain connectivity. By examining network topologies, operating systems, and the specific roles of servers and workstations, participants will gain a technical understanding of how data flows across various environments, from wired office setups to wireless Wi-Fi configurations. Understanding these fundamentals is crucial for anyone tasked with designing, maintaining, or troubleshooting the digital lifelines of a contemporary enterprise.</p>

<p>Beyond basic connectivity, the curriculum delves into the critical aspects of network management and the vulnerabilities that threaten system integrity. You will investigate the common causes of system failure—ranging from operator error and hardware malfunctions to environmental factors and malicious software like ransomware and viruses—while learning proactive strategies for fault management and performance optimization. The course also emphasizes the necessity of rigorous backup strategies and advanced security measures, such as biometric technology and strict password policies. Finally, the material covers the vital landscape of IT compliance, specifically focusing on the Payment Card Industry Data Security Standards (PCI DSS) to ensure that technical operations align with legal and industry requirements for data protection.</p>
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