Part 14 of Computer Networking Fundamentals: Network Hardware

Network Hardware

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

1. Compare and contrast common network hardware.

Learner Objective: Compare and contrast common network hardware

Description: In this episode, the learner will be introduced to common network hardware.

• Introduction to Network Infrastructure
  • Network Hardware
    • Network adapters - a component that controls network communications for the device it is connect to or integrated into
    • Repeaters/extenders - a network component that regenerates a signal, then re-transmits the signal to propagate the communications farther.
    • Hubs - an older, largely obsolete network connectivity device that acts as a multi-port repeater. These network components do not make decisions on where to send the traffic and can reduce performance.
    • Switches - a network connectivity device that forwards network communications between a series of ports. These devices rely on direct connections and use MAC addresses to determine where to send traffic.
    • Routers - a network connectivity device that forwards traffic between networks based on IP addresses.
    • Firewalls - a network component that is used to secure and control network traffic based on predetermined criteria.
    • Voice Over IP (VoIP) phones - a network device can digitizes voice communications that can be routed across TCP/IP networks.
    • Access points - a network connectivity device that allows wireless clients access to a wired network.
    • Cable modems - a common network connectivity device used to provide Internet access using coaxial media.
    • Dial-up modems - a network connectivity device that modulates and demodulates a digital signal, sent over analog PSTN (public switched telephone network) lines.

CompTIA IT Fundamentals+ Course | Module 2 Part 7: Units of Measure

Continue your study of fallacies with a survey of fallacies that stem from the actual debate itself. To make their case, debaters often resort to false analogies, straw men, and ad hominem attacks. Fortunately, once you learn to recognize them, you will be well prepared to combat them and score points to win the debate.

CompTIA IT Fundamentals+ Course | Module 4 Part 1: ⁣Types of Computers

Part 04 of C# .net Bootcamp course.

In this lesson you are going to learn how to Install Microsoft Visual Studio on Windows, especially when you are a Windows user. For MacOS and Linux User, consider viewing the next video.

Part 10 of Computer Networking Fundamentals: Wireless Radio Frequencies

Wireless Radio Frequencies

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

1. Compare and contrast wireless frequencies used in wireless local area networks.

Learner Objective: Compare and contrast wireless frequencies used in wireless local area networks

Description: In this episode, the learner will identify the two frequency ranges used in wireless local area networks (WLAN).

• Introduction to Network Infrastructure
  • Wireless Frequencies
    • Industrial, Scientific and Medical (ISM) band
      • 2.4 Ghz
        • Channels
          • 13 channels (11 available in the US)
          • Each channel is 5 Mhz apart
          • 22 MHz spacing is required between channels to reduce interference
          • 3 non-overlapping channels (22 MHz spacing)
            • Channel 1, channel 2, channel 3
          • 802.11n allows for channel bonding
            • 20 MHz and 40 Mhz
    • Unlicensed Nation Information Infrastructure (U-NII) band
      • 5 Ghz
        • Channels
          • 25 channels
          • All channels are 20 Mhz wide and non-overlapping (unless bonded)
        • The 5 GHz range allows for channel bonding
          • 20 MHz, 40 MHz, 80 MHz and 160 MHz

⁣⁣⁣CompTIA IT Fundamentals+ Course | Module 8 Part 7: Wireless (Wi-Fi) Security

Module 7 Part ⁣4: Productivity, Backup, and Troubleshooting

CompTIA IT Fundamentals+ Course | Module 3 Part 6: ⁣Data Analytics

Take the measure of the sultan Suleiman's extraordinary vision, through which he expanded and consolidated the Ottoman Empire, engendered a bureaucratic system and a unified legislative code, and commissioned monumental architecture. Learn also of his great love for his favorite wife, Roxelana, perhaps the most influential female political figure in Ottoman history.

Part 26 of C# .NET Bootcamp: Conditionals

In this lesson you will learn about using conditionals branching in C#

Module 1 Part 4: Input, Output, and Software Basics

Module 4 Part 1: ⁣Introduction to Operating Systems (OS) and OS Functions

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

Module 8 Part ⁣4: Cybersecurity, Ethics, and Real-World Applications

CompTIA IT Fundamentals+ Course | Module 2 Part 5: Binary Notation

Part 36 of C# .NET Bootcamp: Namespaces in C#

Part 12 of Computer Networking Fundamentals: Wireless Network Configuration

Wireless Network Configuration

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

1. Examine and implement a wireless network configuration.

Learner Objective: Examine and implement a wireless network configuration.

Description: In this episode, the learner will explore a demonstration of wireless network concepts through practical application of wireless network configuration.

• Introduction to Network Infrastructure
  • Wireless network demo
  • Components
    • Wireless enabled laptop
    • Ethernet cable (to connect to the access point)
    • TP-Link TL-WA1201 AC1200 Wireless Access Point
  • If necessary, perform factory reset on the AP
  • Follow the procedures found on the vendor website
    • https://www.tp-link.com/us/support/download/tl-wa1201/
  • Login to the AC point
  • View the Status page
    • Note - examine any current connections via the "Wired Clients" and "Wireless Client"* icons
  • Click the "Quick Setup" tab
    • Note* - Examine the options
      • Access Point mode - the AP controls all communications on the network
      • Range Extender mode - Relays signals to increase the transmission distance of the wireless network
      • Client mode - acts as a networks adapter (or wireless client), allows other wired devices connect to the AP
      • Multi-SSID mode - allows the Access point to create multiple wireless networks for VLANs and security.
  • Click the Network blade
    • LAN - customize the IP address scheme for the AP and the LAN.
    • DHCP Server - customize the DHCP server settings for the wireless network.
  • Click the Wireless blade
    • Wireless Settings - configure the SSID, encryption, mode, channel width and channel.
    • Portal - creates a captive portal to direct clients to for authentication purposes
    • WPS - enable or disable WPS
    • Statistics - view the client's connection properties
    • MAC Filtering - allow or deny access to the wireless networks based on the wireless client's MAC address
  • Click the System Tools blade
    • Time Settings, LED Control, SNMP, Ping Watchdog, Firmware upgrades, Backup & Restore, Reboot Schedule, Administration and Diagnostics