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network connection hardware

Chapter 3: NETWORK CONNECTION HARDWARE. 2. NETWORK INTERFACE ADAPTER. Provides the link between a computer and the networkRequires a device driver to perform both data-link and physical layer functionsPlugs into a bus slot or universal serial bus (USB) port on a computer Also referred to as a network interface card (NIC).

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network connection hardware

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    1. NETWORK CONNECTION HARDWARE Chapter 3

    2. Chapter 3: NETWORK CONNECTION HARDWARE 2 NETWORK INTERFACE ADAPTER Provides the link between a computer and the network Requires a device driver to perform both data-link and physical layer functions Plugs into a bus slot or universal serial bus (USB) port on a computer Also referred to as a network interface card (NIC)

    3. Chapter 3: NETWORK CONNECTION HARDWARE 3 A NETWORK INTERFACE ADAPTER

    4. Chapter 3: NETWORK CONNECTION HARDWARE 4 TRANSMISSION FUNCTIONS Network interface adapters perform the following functions during data transmission: Data transfer, buffering, and encapsulation Media Access Control (MAC) Parallel/ serial conversion Signal encoding and amplification

    5. Chapter 3: NETWORK CONNECTION HARDWARE 5 HALF-DUPLEX AND FULL-DUPLEX MODES

    6. Chapter 3: NETWORK CONNECTION HARDWARE 6 INSTALLING A NETWORK INTERFACE ADAPTER IN A COMPUTER To install a network interface adapter: Physically insert the network interface adapter card into the slot. Configure the card to use the appropriate hardware resources. Install the card’s device driver.

    7. Chapter 3: NETWORK CONNECTION HARDWARE 7 A NETWORK INTERFACE ADAPTER IN A COMPUTER

    8. Chapter 3: NETWORK CONNECTION HARDWARE 8 NETWORK INTERFACE ADAPTER DEVICE DRIVERS Network interfaces require a device driver to provide the link between the computer and the interface. Operating systems ship with device drivers for common interfaces. Operating systems that support PnP detect and configure the interface automatically. You can get drivers from the manufacturer’s Web site. The driver configuration must match the interface’s resource settings.

    9. Chapter 3: NETWORK CONNECTION HARDWARE 9 TROUBLESHOOTING A NETWORK INTERFACE ADAPTER To troubleshoot the suspect network interface adapter, open the computer case and do the following: Verify that the interface is seated properly in the bus slot. Remove the card, clean the slot, and then reseat the card in the same slot or try another slot. Test a different interface (known to be functional) in the same slot and in a different slot

    10. Chapter 3: NETWORK CONNECTION HARDWARE 10 HUBS, REPEATERS, AND CONCENTRATORS Hubs, repeaters, and concentrators are all physical layer devices that Amplify and repeat signals Extend the distance of a network

    11. Chapter 3: NETWORK CONNECTION HARDWARE 11 AN ETHERNET REPEATER

    12. Chapter 3: NETWORK CONNECTION HARDWARE 12 10BASE-T AND 100BASE-X HUBS 10Base-T and 100Base-TX/100Base-T4 standards define Ethernet networks that function at 10 Mbps and 100 Mbps, using baseband signaling over twisted-pair wire. 10Base-T Maximum distance limitation for each connection: 100 meters, including workstation-to-hub and hub-to-hub connections Can have up to four hubs connected to form a hierarchical star Includes an internal crossover circuit Uses an uplink port to form a hierarchical star

    13. Chapter 3: NETWORK CONNECTION HARDWARE 13 10BASE-T AND 100BASE-X HUBS (CONT.) 100Base-TX and 100Base-T4 There are two types of hubs: Class I and Class II. The maximum distance for each node connection is 100 meters. Class II hub-to-hub connections can be no more than 5 meters long.

    14. Chapter 3: NETWORK CONNECTION HARDWARE 14 HUB CONNECTIONS

    15. Chapter 3: NETWORK CONNECTION HARDWARE 15 10BASE-T HUB

    16. Chapter 3: NETWORK CONNECTION HARDWARE 16 ROUTERS Routers are network layer devices that connect LANs. Connect similar or different data-link layer LANs Must understand and support the network layer protocol and addressing Perform fragmentation Strip the data-link header and footer off received frames Add a new data-link header and footer before transmitting frames Use routing protocols to build routing tables and forward frames Define separate broadcast domains

    17. Chapter 3: NETWORK CONNECTION HARDWARE 17 A SIMPLE ROUTED NETWORK

    18. Chapter 3: NETWORK CONNECTION HARDWARE 18 A ROUTED INTERNETWORK

    19. Chapter 3: NETWORK CONNECTION HARDWARE 19 GATEWAYS Can include the functions of all seven layers of the OSI model Connect dissimilar systems and protocols Perform translation and conversion services

    20. Chapter 3: NETWORK CONNECTION HARDWARE 20 SUMMARY Network interface adapters provide the physical link between computers and the network. Hubs are physical layer devices that amplify and repeat signals out all ports except the one they were received through. Routers are network layer devices that forward datagrams between LANs. Gateways translate and convert protocols between dissimilar systems.

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