CMPTR2_CH04 - CMPTR2 Chapter 4 Computer Networks Learning...

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CMPTR2 Chapter 4 Computer Networks
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Learning Objectives LO4.1: Explain what networks are LO4.2: Identify network characteristics LO4.3: Understand how data is transmitted over a network LO4.4: Describe common types of networking media LO4.5: Identify protocols and networking standards LO4.6: Describe networking hardware CMPTR2 Chapter 4: Computer Networks
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LO4.1: What Is a Network? Common uses for computer networks : Sharing an Internet connection among several users Sharing application software, printers, and other resources Facilitating Voice over IP (VoIP), email, videoconferencing, messaging, and other communications applications Working collaboratively Exchanging files among network users and over the Internet Connecting the computers and entertainment devices located within a home Computer network Computers and other hardware devices that are connected to share hardware, software, and data. CMPTR2 Chapter 4: Computer Networks
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LO4.2: Network Characteristics Topics Covered: Wired vs. Wireless Networks Network Topologies Network Architectures Network Size and Coverage Area CMPTR2 Chapter 4: Computer Networks
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Wired vs. Wireless Networks With a wired network connection, the computers and other devices on the network are physically connected via cabling to the network. With a wireless network connection, wireless signals are used to send data through the air between devices, instead of using physical cables. Wireless networks are also found in many public locations, such as coffeehouses, businesses, airports, hotels, and libraries to provide Internet access to users while they are on the go via public wireless hotspots . Many networks are accessible through both wired and wireless connections. CMPTR2 Chapter 4: Computer Networks
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Network Topologies The three most common physical topologies: Star network Bus network Mesh network Star network A network that uses a host device connected directly to several other devices. Bus network A network that uses a central cable to which all network devices connect. Mesh network A network that uses multiple connections between network devices. CMPTR2 Chapter 4: Computer Networks
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Network Architectures Architecture : the way networks are designed to communicate Client-server network A network that includes both clients and servers Peer-to-peer (P2P) network A network in which the computers on the network work at the same functional level, and users have direct access to the network devices. CMPTR2 Chapter 4: Computer Networks
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Network Size and Coverage Area A personal area network (PAN) is a network of personal devices for one individual that is designed to enable those devices to communicate and share data.
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