NP10_Chapter05 - Chapter 5 LANs and WLANs 5 Chapter...

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LANs and WLANs LANs and WLANs Chapter 5 Chapter 5
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Chapter 5: LANs and WLANs 2 5 Chapter Contents h Section A: Network Building Blocks A Section B: Wired Networks A Section C: Wireless Networks A Section D: Using LANs A Section E: Security Through Encryption
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Chapter 5: LANs and WLANs 3 5 SECTION A Network Building Blocks Network Building Blocks h Network Classifications A LAN Standards A Network Devices A Clients, Servers, and Peers A Physical Topology A Network Links A Communications Protocols
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Chapter 5: LANs and WLANs 4 5 Network Classifications h Personal Area Network (PAN) – interconnection of personal digital devices A Neighborhood Area Network (NAN) – connectivity spread over several buildings A Local Area Network (LAN) – usually connects computers in a single building A Metropolitan Area Network (MAN) – public high- speed network with range of about 50 miles A Wide Area Network (WAN) – consists of several smaller networks
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Chapter 5: LANs and WLANs 5 5 LAN Standards h LAN technologies are standardized by the Institute of Electrical and Electronics Engineers (IEEE) Project 802 – Local Network Standards IEEE 802.3 Ethernet
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Chapter 5: LANs and WLANs 6 5 Network Devices h Each connection point on a network is referred to as a node A To connect to a LAN, a computer requires network circuitry, sometimes referred to as a network interface card (NIC) A A networked peripheral, or network-enabled peripheral, is any device that contains network circuitry to directly connect to a network A A network device, or network appliance, is any electronic device that broadcasts network data, boosts signals, or routes data to its destination
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Chapter 5: LANs and WLANs 7 5 Network Devices
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Chapter 5: LANs and WLANs 8 5 Clients, Servers, and Peers h Network devices can function as clients or as servers Application server File server Print server A Networks that include one or more servers can operate in client/server mode
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Chapter 5: LANs and WLANs 9 5 Physical Topology h The arrangement of devices in a network is referred to as its physical topology Star Ring Bus Mesh Tree A Two similar networks can be connected by a device called a bridge A Gateway is a generic term for any device or software code used to join two networks
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Chapter 5: LANs and WLANs 10 5 Network Links h A communications channel, or link, is a physical path or frequency for signal transmissions A Bandwidth is the transmission capacity of a communications channel Broadband Narrowband
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Chapter 5: LANs and WLANs 11 5 Communications Protocols h Rules for efficiently transmitting data from one network node to another Divide messages into packets
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NP10_Chapter05 - Chapter 5 LANs and WLANs 5 Chapter...

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