Answer the following statements true (T) or false (F)

1. Access to high-speed communication lines (such as cable) calls for a cable modem.
2. Some peripheral devices are linked directly to the processor.
3. A buffer is temporary memory or storage used to adjust for the speed differential between
the processor and memory.
4. Certain functions (for example, deciding where the next byte can be found or stored in
memory and counting the characters transferred to or from an external device) are
common to almost all types of input and output. On larger machines, they are performed
by each interface; in effect, they are duplicated for each device on the system.
5. On a mainframe computer, a channel handles device-independent functions and device-
dependent functions are implemented through I/O control units or interface units.


1. True
2. False
3. False
4. False
5. True

Computer Science & Information Technology

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