on Chapter 4

1.   What is a the name for a group of parallel conductors on the main circuit board over which data and signals flow?

A.   PCB

B.   bus

C.   system cable

D.   device controller

2.   What is the main difference between the section of memory that holds instructions and the section of memory that holds data?

A.   Data memory is arranged into bytes with addresses; instruction memory holds words without addresses.

B.   There is no difference. All memory does is hold bit patterns. It is up to the rest of the computer system to determine what those patterns mean

C.   Data memory is connected to the data bus. Instruction memory is connected to the instruction bus.

D.   Data uses virtual memory; instructions use physical memory.

3.   How many memory addresses are there with a 32-bit bus?

A.   This depends on how much memory has been installed in the computer.

B.   2³²

C.   32²

D.   32

4.   How is the illusion of a full address space maintained on a modern computer?

A.   Addresses on the system bus are divided between disk storage and RAM memory.

B.   The operating system, with the help of special electronics, uses both physical memory and disk storage to implement the address space.

C.   Most programs use far less than the full address space, so they don't notice that only part of it is there.

D.   The processor divides time into very small slices and changes the contents of memory after each slice.

5.   What is cache memory?

A.   The part of the hard disk that lists its contents.

B.   The part of the hard disk used for virtual memory.

C.   Read-only memory that holds basic I/O instructions.

D.   Memory inside the processor chip that is used to speed up main memory access.