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Networking Devices and their Functions

Networking Devices and their Functions

Networking devices must be properly configured in order to communicate with other networking devices. For example, the annoying sound heard at the beginning of a fax transmission means that the two fax machines are agreeing on parameters for the transmission. Serial ports on PCs are used to connect to routers, …

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OSI Model Layers and its Functions

OSI Model Layers and its Functions

The Open System Interconnection (OSI) reference model is an industry-standard framework created and maintained by the International Standardization Organization (ISO). The OSI model was created to make network devices and network protocols interoperable. It allows components, such as hard drives and video cards, to function in a computer or network …

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Internet Connections Types

Internet Connections Types

There are many types of connections available for modern networks. Network connection types vary widely. Dial-up, broadband, cable, DSL, satellite, ISDN, and cellular (broadband wireless) are the main types of network connections which we describe. Ethernet Internet connections are becoming more common in homes and businesses, but are not described …

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What is Network Cabling

Network Cabling | Basics | Tools

In this lesson, the various types of network media are described along with the tools used in day-to-day network operations. Lesson Objectives Identify network cables and connectors. Categorize characteristics of connectors and cables. Identify the appropriate networking tools to use based on a given scenario. Network Media The network media …

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Network Types and Topologies

Network Types and Topologies

This lesson introduces computer networking. The types of networks and the types of network topologies are described. The role of a network administrator is explained. Network operating systems are described. Computer Networks A computer network is a collection of devices, including computers, connected together for the purpose of sharing data …

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Printer Types

Printer Types | Impact and Non-Impact Printer

In this lesson, printers are explored, with descriptions of each major printer type. The methods printers use to move paper are explained. And the maintenance techniques of cleaning and calibrating printers are described. Laser printer operation is described in some detail. Lesson Objectives Identify printer features. Identify the advantages and …

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Laptop Components and Their Functions

Laptop Components and Their Functions

This lesson describes the components of a laptop, including displays, lids, keyboards, mice, AC power, hard drives, optical drives, docking stations, port replicators, and peripherals along with their functions. Lesson Objectives Identify laptop components and their functions. Identify laptop expansion capabilities. Identify laptop connection types. Laptops Laptop computers, or laptops, …

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Serial and Parallel Ports of Computer

Serial and Parallel Ports of Computer

This lesson introduces the interface types used to connect external devices for digital communication. These interface types include serial, parallel, PS/2, USB, FireWire, and Bluetooth. Lesson Objectives Identify and compare I/O ports. Identify the characteristics of connection interfaces. Identify connector types and associated cables. Identify the appropriate connector or cable …

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Data Security Methods

Data Security Methods | Wireless Network Security

Securing data on a device is of the utmost importance. Both physical and digital security should be considered. A plan including risk mitigation is always a good idea when dealing with data. Several methods to protect data are described in this lesson. These measures extend to the disposal of hardware …

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Computer Storage Devices Types

Computer Storage Devices Types

In this lesson, computer storage is described, including types of external and internal storage, how data is read from and written to storage devices, and how to install storage devices. Storage Devices Floppy disk drives, tape drives, hard drives, optical drives, flash drives, and solid-state drives comprise the storage options …

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Computer Security Basics

Computer Security Basics | Digital Security Threats

Securing data is one of the biggest concerns everyone has in today’s world. This lesson will outline the importance of computer security and will introduce several common methods used to prevent a breach of user data. Several types of digital security threats will be discussed in the last part of …

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Central Processing Unit (CPU) Basics

CPU | Architecture | Components | Function

This lesson describes the various types of CPUs used historically and currently. The attributes that distinguish CPUs are described. The common types of CPU sockets and slots are also described. Lesson Objectives Identify the appropriate processor based on a given scenario. Identify the appropriate socket for a CPU. Identify the …

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How to Network Printer Sharing

How to Network Printer Sharing

This lesson will provide an introduction on How to implement Network Printing. Examples of how to share printers and connect to shared printers are described. Networking Printing Sharing printers is a huge savings of money and resources for businesses and home users alike. There are three common ways to share …

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Virtualization Basics

This lesson will provide an introduction to virtualization on the desktop or server. Topics such as the purpose of virtualization, what a Hypervisor is and how it is used, software that can allow virtualization, and hardware requirements are outlined. Purpose of Virtualization Virtualization is a new topic on the A+ …

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Types of Buses in Computer Architecture

Types of Buses in Computer Architecture

Every bus has three distinct channels of communication. The address bus, which is a unidirectional pathway that allows information to travel in only one direction, carries information about where data will be stored in memory. The data bus is a bidirectional pathway that carries the actual data (information) to and …

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