cable modem

Definition

High speed (2 megabits per second or higher) modem used with a computer to access internet over cable-TV lines instead of phone lines. Cable modems provide permanent (no dial-up) connection on a rental basis but, because they convert the cable TV system into a huge local area network (LAN), every user has to share the available bandwidth with all other users data transfer rate falls as the number of users grows. Since everyone on a LAN can 'see' everybody else's hard disk, every user of cable modem has to disallow 'sharing' on his or her computer.

单词	cable modem
释义	cable modem Definition High speed (2 megabits per second or higher) modem used with a computer to access internet over cable-TV lines instead of phone lines. Cable modems provide permanent (no dial-up) connection on a rental basis but, because they convert the cable TV system into a huge local area network (LAN), every user has to share the available bandwidth with all other users data transfer rate falls as the number of users grows. Since everyone on a LAN can 'see' everybody else's hard disk, every user of cable modem has to disallow 'sharing' on his or her computer.
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