Turn away from the court in Kyoto to the countryside, where political infighting led to the rise of Japan's first shogunate ("warrior dynasty") and the emergence of the samurai. You'll also explore the rise of warrior culture through the lines of The Tale of the Heike, an epic ballad spread by wandering minstrels.

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

You can't truly grasp a country's culture without understanding its ideas about the family. Explore the three main models of Japanese family life: the aristocratic model (uji), the samurai model (ie), and the postwar model. Along the way, learn about shifting attitudes toward domestic life, including women's rights and family planning.

Part 41 of C# .NET Bootcamp: Polymorphism

Part 06 of C# .net Bootcamp

In this lesson, you are going to learn about how to begin developing a computer program in .net platform using Microsoft Visual Studio Code, especially when you are MacOS or Linux user.

⁣⁣⁣CompTIA IT Fundamentals+ Course | Module 9 Part 7: Linux

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

Part 06 of Computer Networking Fundamentals: Wide Area Networks (WANs)

Wide Area Networks

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

1. Describe the components and attributes of a wide area network.

Learner Objective: Describe the components and attributes of a wide area network

Description: In this episode the learner will identify the components and attributes of a wide area network.

• Introduction to Network Infrastructure

  • Wide area networks (WAN)
    • What is a wide area network? - A network that groups together or connects more than one local area networks. These networks utilized a combination or short-range private network links as well as long range carrier provided public links.
    • Connection Types
      • Leased Lines
        • Direct Connections (On-premise to cloud)
        • Channelized Carrier Standards
          • T1 = 1.55 Mbps
          • T3 = 44.736 Mbps
          • OC1 = 51.84 Mbps
          • OC3 = 155.52 Mbps
      • Multiprotocol Label-Switching (MPLS) - this is a WAN technology that uses labels to determine the shortest path, instead of network addresses. The multiprotocol label switching technology is implemented in a mesh topology.
      • Synchronous Optical Networking (SONET) - this is a WAN technology that can transmit large amounts of data over long distances using fiber optic media. The SONET technology implements a fault-tolerant ring topology.
      • Digital Subscriber Line (DSL) - this is WAN technology allows digital data and voice signals to be transmitted over traditional telephone networks call public switched telephone network or PSTN copper media. The most common DSL type is called asymmetrical DSL or ADSL, providing faster downloads than uploads
      • Dialup - this is one of the oldest networking technologies using copper media with data being transmitted over public switched telephone networks or PSTN. Dialup is a digital signal that is modulated over a analog carrier via a modem.

Part 0⁣5 of Computer Networking Fundamentals: Demarcs and Perimeter Networks

Demarcation and Perimeter Networks

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

1. Describe the characteristics and importance of demarcation points and perimeter networks.

Learner Objective: Describe the characteristics and importance of demarcation points and perimeter networks.

Description: In this episode, the learner will explore what demarcation points and perimeter networks are as well as what the importance of these technologies are in networking.

• Introduction to Network Infrastructure
  • Demarcation point - The physical point that a carrier's network connection ends and a private network starts (think network boundaries). The term demarcation is often abbreviated demarc.
    • Types of demarcation points
      • Residential - These are utilized in homes, either at the first socket (typically the kitchen) or a junction box on the exterior of the house
      • Business - These demarcation points are either installed on the exterior of the building, or the carrier will install a specialized device within the interior of the building at a main distribution frame (think server closet/datacenter)
    • Demarcation wiring runs either overhead or underground
    • A demarc is important to understand in networks today as this marks the point of responsibility for networked components and service. The carrier's network up to the demarc is the responsibility of the carrier, however the demarc point that connect on the residential or business side is the responsibility of the subscriber.
    • Demarc connections can be fiber, coaxial or PSTN lines
  • Perimeter Network (Screened Subnets) - A logical boundary between a privately owned network and the Internet. There are other names for perimeter networks such as demilitarized zone (DMZ), screened subnet and edge network.
    • Purpose
      • Security - A companies internal network must remain secure and not allow public access. Most organizations will install security devices in the perimeter network to control the flow of inbound and outbound traffic such as firewalls, intrusion detection systems (IDSs), intrusion prevention systems, honeypots or devices called unified threat management systems (UTM) which combine all the previous devices' functionality into one centralized device.

⁣⁣CompTIA IT Fundamentals+ Course | Module 6 Part 6: ⁣Input Devices and Peripherals

Part 07 of C# .net Bootcamp

In this lesson, you're going to learn about the history of the .net

Module 7 Part ⁣1: Introduction to Digital Literacy and Essential Tools

Module 8 Part ⁣2: Machine Learning and Blockchain

Part 17 of Computer Networking Fundamentals: Network Cable Types and Connectors

Cable Types and Connectors

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

1. Compare and contrast network cabling types, specifications and standards.

Learner Objective: Compare and contrast network cabling types, specifications and standards.

Description: In this episode, the learner will explore various network cable types, connectors and cabling standards.

• Introduction to Network Hardware
  • Network Media Types
    • Cable Types
      • Copper - copper cabling is the most prevalent media in networks today. This type of media has a lower cost when compared to fiber
        • Coaxial cabling - this type of copper media is mostly used in audio and video implementations today rather than networking. This cable type uses a centralized copper conductor wrapped in a dialectric coating, braided shielding and an insulating out jacket. The common connectors used for termination are BNC, F-type and T connectors.
        • Twisted pair cabling - this is the most commonly used bounded network media in local area networks. This cable is comprised of 8 copper conductors, twisted in four pairs. These cable come in an unshielded variety called unshielded twisted pair or UTP as well as a shielded variety that wraps the internal conductors in a foil shielding called shielded twisted pair or STP. These cables use an RJ-45 connection for termination not to be confused with the smaller RJ-11 connector used in telephone systems.
          • PVC grade cable - this twisted pair cabling is commonly used to connect computers to wall plates.
          • Plenum grade cable - this cabling is used in premise wiring throughout plenum spacing for fire code.
      • Fiber Optic - this type of cabling uses glass or plastic cores, cladding, strengthening fibers and an outer jacket. This network media has the fastest and farthest transmission distance of all bounded network media.
        • Multimode fiber - this fiber optic cable uses cores of 50 and 62.5 microns and mulitple light sources to propagate the signal. It is the cheaper and shorter distance when compared to singlemode fiber.
        • Singlemode fiber - this fiber optic cable uses a core of 9 microns and a single light source to propagate the signal. This type of fiber optic cabling is more expensive and farther transmission distances than multimode fiber.
        • Connectors
          • Subscriber Connector - An older square locking connector.
          • Lucent connector - A smaller connector than the SC connector, providing a greater port density.
        • Transceiver Modules
          • SFP/SPF+ - these are modules are identical in size, however SFP support 1 Gbps transmission speeds and SFP+ supports 10Gbps.
          • QSFP/QSFP+ - these modules are identical in size, the difference is that the QSFP support for four 1 Gbps links simultaneously and QSFP+ supports four 10 Gbps links simultaneously.
      • Cable Categories - these are a set of specifications that were developed by the Telecommunication Industry Association/Electronics Industry Alliance or TIA/EIA as a part of the cabling standards endorsed by the American National Standards Institue (ANSI)
        • CAT5e - this is the cable used in Gigabit Ethernet implementations capable of transmitting data a 350 Mbps
        • CAT6 - this is the cable standards used in Gigabit Ethernet implementations capable of transmitting data at 1 Gbps
        • CAT6a - this is the cable used in Gigabit Ethernet implementations capable of transmitting data up to 10 Gbps.
    • Ethernet Base Standards
      • 10BASET = Ethernet implementation, 10 Mbps tranmission speed over twisted pair cables
      • 100BASET = Fast Ethernet implementation, 100 Mbps tranmission speed over twisted pair cables
      • 1000BaseTX = Gigabit Ethernet implementation, 1000 Mbps tranmission speed over twisted pair cables
      • 10GBASELX - 10 Gigabit Ethernet implementation using fiber optic media.
    • Cabling Issues
      • Improper termination - internal conductors are crossed or damaged
      • Electromagnetic interference - high voltage power sources, water fountains, HVAC systems, fluorescent lighting can cause interference and corrupt the communication signal in copper-based media.
      • Damage - physical damage to the out jacket, internal conductors or cores can cause communication issues on the network
      • Standards Mismatch - this can cause slower than expected or poor performance on the network or worse, no communications.

The field of mathematics owes a tremendous debt to the Islamic Golden Age. Mathematicians such as Omar Khayyam (who is perhaps better known today as a poet) and al-Khwarizmi built on the work of Babylonian, Greek, and Indian mathematicians to systematize and explain algebra and symbolic algorithms. Survey this critical period of mathematics history.

⁣CompTIA IT Fundamentals+ Course | Module 4 Part 5: Servers

Module ⁣3 Part 3: Cloud Computing and Virtualization

Part 33 of C# .NET Bootcamp: ⁣FIelds, Properties, and Constructors

In this lesson you will learn about fields, properties and constructors and how to use them.