tailieunhanh - NETWORK+ GUIDE TO NETWORKS, FOURTH EDITION - CHAPTER 5

Networking Hardware Identify the functions of LAN connectivity hardware Install and configure a NIC (Network Interface Card) Identify problems associated with connectivity hardware Describe the factors involved in choosing a NIC, hub, switch, or router Discuss the functions of repeaters, hubs, bridges, switches, routers, and gateways, and the OSI Model layers at which they operate Describe the use and types of routing protocols | NETWORK+ GUIDE TO NETWORKS, FOURTH EDITION Chapter 5 Networking Hardware OBJECTIVES Identify the functions of LAN connectivity hardware Install and configure a NIC (Network Interface Card) Identify problems associated with connectivity hardware OBJECTIVES (CONTINUED) Describe the factors involved in choosing a NIC, hub, switch, or router Discuss the functions of repeaters, hubs, bridges, switches, routers, and gateways, and the OSI Model layers at which they operate Describe the use and types of routing protocols NICS (NETWORK INTERFACE CARDS) Connectivity devices that enable workstations, servers, printers, or other nodes to receive and transmit data over network media Usually contain data transceiver Belong to Physical and Data Link layers Apply data signals to wire Assemble and disassemble data frames Interpret physical addressing information Determine which node has right to transmit data at any given instant TYPES OF NICS NICs come in variety of types . | NETWORK+ GUIDE TO NETWORKS, FOURTH EDITION Chapter 5 Networking Hardware OBJECTIVES Identify the functions of LAN connectivity hardware Install and configure a NIC (Network Interface Card) Identify problems associated with connectivity hardware OBJECTIVES (CONTINUED) Describe the factors involved in choosing a NIC, hub, switch, or router Discuss the functions of repeaters, hubs, bridges, switches, routers, and gateways, and the OSI Model layers at which they operate Describe the use and types of routing protocols NICS (NETWORK INTERFACE CARDS) Connectivity devices that enable workstations, servers, printers, or other nodes to receive and transmit data over network media Usually contain data transceiver Belong to Physical and Data Link layers Apply data signals to wire Assemble and disassemble data frames Interpret physical addressing information Determine which node has right to transmit data at any given instant TYPES OF NICS NICs come in variety of types depending on: Access method Network transmission speed Connector interfaces Type of compatible motherboard or device Manufacturer INTERNAL BUS STANDARDS Bus: circuit used by motherboard to transmit data to computer’s components Including memory, processor, hard disk, and NIC Capacity defined principally by: Width of data path (number of bits that can be transmitted in parallel) Clock speed Expansion slots allow devices to connect to computer’s expanded bus Devices found on circuit board called an expansion card INTERNAL BUS STANDARDS (CONTINUED) Peripheral Component Interconnect (PCI): 32- or 64-bit bus with 33- or 66-MHz clock speed Maximum data transfer rate is 264 MBps Industry Standard Architecture (ISA): original PC bus type PCI Express specifies 64-bit bus with 133-MHz clock speed Capable of up to 500 MBps per data path Efficient data transfer, support for quality of service distinctions, error reporting and handling, and compatibility with current PCI software INTERNAL BUS .