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Introduction to Broadband and Networking Course Lesson 2 of 2. Instructor: Walt Dundore. Learning Outcomes. 1. List and describe the various types of network communications and network addressing. 2. List and define the different types of networks.
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Introduction to Broadband and NetworkingCourse Lesson 2 of 2 Instructor: Walt Dundore
Learning Outcomes 1. List and describe the various types of network communications and network addressing. 2. List and define the different types of networks. 3. Describe different network topologies. 4. List and describe different network standards and protocols. 5. Describe wireless communication. 6. List and describe network hardware.
Network HardwareOSI Physical Layer • When connecting computing equipment there are two major categories of media used: • Wired • Wireless
Network HardwareOSI Physical Layer • Major Wired Technologies: • Twisted Pair • Coaxial Cable • Optical Fiber
Network HardwareOSI Physical Layer • Twisted Pair • The most widely used medium for telecommunication • Can be utilized for both voice and data transmission. • Reduces crosstalk and electromagnetic induction. • Speeds ranges from 2 million bits per second to 100 million bits per second. • Unshielded Twisted Pair (UTP) • Shielded twisted-pair (STP)
Network HardwareOSI Physical Layer • Coaxial Cable • Used for cable television systems, office buildings, and other work-sites for local area networks. • Copper or aluminum wire wrapped with insulating layer • Insulation helps minimize interference and distortion. • Speeds range from 200 million to more than 500 million bits per second.
Network HardwareOSI Physical Layer • Optical Fiber • Glass fiber • Carries data by pulses of light. • Not affected by electromagnetic radiation. • Speed may reach trillions of bits per second. • can carry multiple multiple signals in a single strand.
Network HardwareOSI Physical Layer • Wireless Networks • Not connected by cables of any kind • Avoids the costly process of introducing cables into to a building • Connects multiple buildings • Uses radio waves. • Physical level, (Layer 1), of the network structure.
Network HardwareOSI Physical Layer • Wireless PAN (Personal Area Network) • Bluetooth radio • Infrared light • ZigBee • Intel "My WiFi" and Windows 7 "virtual Wi-Fi
Network HardwareOSI Physical Layer • Wireless LAN (Local Area Network) • Uses an access point • Wi-Fi • Fixed Wireless Data
Network HardwareOSI Data Link Layer • Wired Ethernet Hub
Network HardwareOSI Physical Layer • Wireless LAN (Local Area Network)
OSI Data Link Layer • MAC Addressing • Each hardware node, or device, has a unique Layer 2 address
OSI Data Link Layer To view the MAC address of a node on a Windows machine, first open the command prompt by clicking the start button. Then in the search or run box type “cmd”
OSI Data Link Layer While in the command prompt, type “ipconfig /all” which is the IP configuration utility. This should show the physical address, or MAC address:
Network HardwareOSI Data Link Layer • Network Bridge
Network HardwareOSI Data Link Layer • Wired Ethernet Network Switch
OSI Network Layer • Network Addressing • Logical addresses • Internet Protocol (IP)
OSI Network Layer To view the ip address of a Windows machine, first open the command prompt by clicking the start button. Then in the search or run box type “cmd”
OSI Network Layer While in the command prompt, type “ipconfig” which is the IP configuration utility. This should show the IP address:
Network HardwareOSI Network Layer • Wired Ethernet Network Router
Troubleshooting:Test the Network Layer To view the gateway address of a Windows machine, first open the command prompt by clicking the start button. Then in the search or run box type “cmd”
Learning Outcomes 1. List and describe the various types of network communications and network addressing. 2. List and define the different types of networks. 3. Describe different network topologies. 4. List and describe different network standards and protocols. 5. Describe wireless communication. 6. List and describe network hardware.
References Cisco Systems, Inc., (2003, March 14). CCNA: network media types. (Retrieved from ciscopress.com) Andrew S. Tanenbaum, Computer Networks (ISBN 0-13-349945-6) Open Systems Interconnection -- Basic Reference Model: The Basic Model ISO/IEC 7498-1:1994 (http://www.iso.org/iso/catalogue_detail.htm?csnumber=20269) Contact Information Walt Dundore walt@dundore.org