Switch is a network device that connects other devices to Ethernet networks through twisted pair cables.
#Network booster device in india manual
This is suited for larger networks where manual feeding may not be feasible due to large number of routers. So it is suitable only for very small networks that have maximum two to three routers.ĭynamic − In a dynamic routing table, the router communicates with other routers through protocols to determine which routes are free. Static − In a static routing table the routes are fed manually. The routing table may be of these two types − Routing TableĪ router reads its routing table to decide the best available route the packet can take to reach its destination quickly and accurately.
Router also strengthens the signals before transmitting them. It receives its data in the form of packets, which are data frames with their destination address added. So a router is typically connected to at least two LANs and the internet service provider (ISP). RouterĪ router is a network layer hardware device that transmits data from one LAN to another if both networks support the same set of protocols. However, modern cards support fast Ethernets up to a speed of 100 Mbps. Old Ethernet cards had maximum speed of 10 Mbps. The NIC has RJ45 socket where network cable is physically plugged in.Įthernet card speeds may vary depending upon the protocols it supports. In modern computer systems, it is an internal hardware component. The earliest Ethernet cards were external to the system and needed to be installed manually. Ethernet CardĮthernet card, also known as network interface card (NIC), is a hardware component used by computers to connect to Ethernet LAN and communicate with other devices on the LAN. These pins go into the corresponding socket on devices and connect the device to the network. The cable used for Ethernet LANs are twisted pair ones and have RJ45 connector pins at both ends. Ethernet is a technology that defines protocols for establishing a LAN. RJ45 connector is an 8-pin jack used by devices to physically connect to Ethernet based local area networks (LANs).
RJ45 is the acronym for Registered Jack 45.
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Half duplex − A half-duplex modem has the capacity to transfer data in both the directions but only one at a time.įull duplex − A full duplex modem can transmit data in both the directions simultaneously. Simplex − A simplex modem can transfer data in only one direction, from digital device to network (modulator) or network to digital device (demodulator). Modem can be categorized in several ways like direction in which it can transmit data, type of connection to the transmission line, transmission mode, etc.ĭepending on direction of data transmission, modem can be of these types − The demodulator converts analog data signals into digital data when it is being received by the computer. The modulator converts digital data into analog data when the data is being sent by the computer. Modem is a combination of two devices − modulator and demodulator. The main function of the modem is to convert digital signal into analog and vice versa. The data stored on the computer is digital whereas a telephone line or cable wire can transmit only analog data. Modem is a device that enables a computer to send or receive data over telephone or cable lines.
Let us explore some of these devices in greater detail. Some devices are installed on the device, like NIC card or RJ45 connector, whereas some are part of the network, like router, switch, etc. Network devices may be inter-network or intra-network.
These devices transfer data in a fast, secure and correct way over same or different networks. Hardware devices that are used to connect computers, printers, fax machines and other electronic devices to a network are called network devices.
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