Part 01 of ⁣C# .NET Bootcamp: The Fundamentals (OOP, LINQ, Test Automation + more)

Part 15 of C# .NET Bootcamp: ⁣The C# Compiler

In this lesson, you are going to learn about the C# compiler, how it works and how can you work with it

CompTIA IT Fundamentals+ Course | Module 5 Part 3: ⁣Central Processing Unit (CPU)

CompTIA IT Fundamentals+ Course | Module 4 Part 2: ⁣Overview of a Computer

Part 20 of the C# .NET Bootcamp: ⁣Using C# Value Types

CompTIA IT Fundamentals+ Course | Module 3 Part 7: Data-driven Business Decisions

Part 08 of C# .net Bootcamp: What is the .NET Platform?

In this lesson, you are going to learn about what is the .NET platform, what it's used for, and how it works.

Part 38 of C# .NET Bootcamp: Interfaces

Module 6 Part ⁣2: Phishing, Network Security, and Firewalls

Part 07 of Computer Networking Fundamentals: Additional Network Types

Additional Network Types

At the end of this episode, I will be able to:

1. Compare and contrast network types.

Learner Objective: Compare and contrast network types.

Description: In this episode, the learner will explore additional network types such as personal area networks (PAN), metropolitan area networks (MAN), campus area networks (CAN) and storage area networks (SAN).

• Introduction to Network Infrastructure
  • Additional Network Types
    • Personal Area Networks (PAN) - A network that is typically an individual's or user's immediate vicinity. The range is common a meter to 10 meters. Common devices are Wi-Fi and Bluetooth peripherals
    • Metropolitan Area Network (MAN) - A network that spans a larger geographical area than a local area network, but a smaller coverage area than a wide area network. The coverage area is a single city, municipality or in some instances multiple cities.
    • Wireless Metropolitan Area Network (WMAN) - A network in which the scope is the same as a traditional met area network, using unbounded media such as the Wireless Interoperability for Microwave Access or WiMAX.
    • Campus Area Network (CAN) - A network that is very similar to the scope of a metropolitan area network, however is under the control of a single academic body.
    • Wireless Wide Area Networks (WWAN) - A network that is the same in coverage area to a traditional wide area network, using cellular communications such as 3G, 4G, 5G and LTE to communicate.
    • Storage Area Networks (SAN) - a network type that utilizes high-speed connections, using Fiber Channel, interconnected switches, fiber optic media, connecting servers to data storage.

Part 09 of Computer Networking Fundamentals: Wireless Standards

Wireless Standards

At the end of this episode, I will be able to:

1. Compare and contrast wireless technology standards.

Learner Objective: Compare and contrast wireless technology standards.

Description: In this episode, the learner will be introduced to a variety of wireless specifications and standards.

• Introduction to Network Infrastructure
  • Wireless networking
    • Wireless Standards
      • IEEE - Institute of Electrical and Electronics Engineers (IEEE)
        • The world's largest association of technical professionals and standards body.
        • Electrical, electronics, telecommunications, computer engineering
      • 802 - is the standards committee that develops and maintains networking
      • Wi-Fi Alliance - a non-profit organization that owns the Wi-Fi trademark. Manufacturers may use the trademark to brand products certified for Wi-Fi interoperability. standards for LANs, MAN, and their wireless counterparts WLAN, WPAN, WMAN as well as Ethernet and bridging technologies.
      • 802.11 - is the standards committee for wireless LAN RF communication standards
      • 802.11a - (1999)released along side .11b, 5 GHz frequency @54Mbps
      • 802.11b - (1999)released along side .11a, 2.4 GHz frequency @11Mbps
      • 802.11g (Wi-Fi 3)- (2003)2.4 GHz @54Mbps, supports backward compatibility with .11b devices
      • 802.11n (Wi-Fi 4) - (2009) 2.4 GHz and 5 GHz, @600Mbps, supports backward compatibility with all earlier 802.11 standards, increased channel width.
      • 802.11ac (Wi-Fi 5) - (2014) 5 GHz, @1.3 Gbps-2.3 Gbps
      • 802.11ax (Wi-Fi 6/6E) - (2021) 2.4 GHz,5 GHz and 6 GHz, @9.6 Gbps
    • Bluetooth
      • Wireless communication technology operating in the 2.4 GHz ISM band
      • Bluetooth 1.* (1999)- 732 Kbps (10m or 32.8 ft)
      • Bluetooth 2.* - (2004) (Enhanced Data Rate or EDR) 3 Mbps (10m or 32.8 ft)
      • Bluetooth 3.0 - (2009) (+ High Speed or +HS) (up to 24 Mbps over Wi-Fi) (10m or 32.8 ft) excessive power consumption
      • Bluetooth 4.* - (2010) (Bluetooth Low Energy or BLE) 1 Mbps (610m or 32.8 ft)
      • Bluetooth 5.* (2016)- 2 Mbps (10m or 32.8 ft)
    • Infrared
      • Short-range line-of-sight communication
      • Specifications are controlled by the Infrared Data Association (IrDA)
      • Standards
        • Serial IrDA (SIR) - 115.2 Kbps
        • Fast IrDA (FIR) - 4 Mbps
        • Very Fast IrDA (VFIR) - 16 Mbps

Part 11 of Computer Networking Fundamentals: Wireless Network Security

Wireless Network Security

At the end of this episode, I will be able to:

1. Compare and contrast wireless security technologies.

Learner Objective: Compare and contrast wireless security technologies

Description: In this episode, the learner will explore a variety of wireless network security technologies.

• Introduction to Network Infrastructure
  • Wireless Security
    • WEP
      • Weak or vulnerable to attack(Avoid)
      • Uses a static key
      • 64-bit or 128-bit key
      • RC4 stream cipher
      • CRC checksum
    • WPA
      • Weak or vulnerable to attack(Avoid)
      • Uses Temporal Key Integrity Protocol
      • Per-packet encryption
      • RC4 stream cipher
      • Message Integrity Check
    • WPA2
      • Stronger (Implement)
      • Uses CCMP
        • Counter Mode Cipher Block Chaining Message Authentication Code Protocol
      • Advanced Encryption Standard
      • 128-bit key
    • WPA3
      • Strongest
      • Uses SAE
      • 128-bit or 192-bit encryption
    • WPS
      • Push-button security
      • Simplifies implementing security
      • Weak or vulnerable to attack (Avoid)
      • Disable
    • Personal Mode
      • WPA/WPA2/WPA3 implementation
      • Requires no additional infrastructure
      • Uses a preshared key or PSK (think password)
    • Enterprise Mode
      • WPA/WPA2/WPA3 implementation
      • Requires additional infrastructure
      • Utilizes 802.1X port-based authencation
      • Requires a Remote Access Dial-in Server (RADIUS)
    • MAC Filtering
      • A security technique that identifies which wireless clients are allowed or denied access to the wireless network based on the client's media access control address.

Part 21 of C# .NET Bootcamp: ⁣Casting and Value Type Conversions

In this lesson, you'll learn how to cast and convert value type from a type to another type.

Part 18 of Computer Networking Fundamentals: Building a Network

Module 8 Part ⁣3: Internet of Things (IoT) and Quantum Computing

Part 17 of C# .NET Bootcamp: ⁣Debugging in Visual Studio

In this lesson, you are going to learn about debugging in Visual Studio, and how to find a problem in your application so that it can run right.

CompTIA IT Fundamentals+ Course | Module 4 Part 7: Internet of Things (IoT) Devices

Module 8 Part ⁣2: Machine Learning and Blockchain

Part 55 of C# .NET Bootcamp: ArrayList

Part 47 of C# .NET Bootcamp: Switch Expression in C#