Computing

Question 1

1The accumulator (ACC) is used to

Hard

A. store the operating system B. hold the results of calculations done by the ALU C. connect to the network D. hold the clock

Question 2

2POST stands for

Medium

A. Program Output Storage Table B. Power-On Self-Test C. Primary Operating System Test D. Processor Online Status Tool

Question 3

3The Memory Data Register (MDR) holds

Hard

A. the program counter B. the address only C. the clock speed D. the data or instruction just fetched from or about to be written to memory

Question 4

4In the von Neumann architecture, instructions and data are

Medium

A. stored in separate memories always B. kept only on the hard disk C. never stored D. stored together in the same main memory

Question 5

5The width of the data bus affects

Hard

A. the keyboard layout B. the screen size C. how many bits can be transferred at one time D. the number of USB ports

Question 6

6Firmware is stored on non-volatile memory.

Medium

A. True B. False

Question 7

7The Current Instruction Register (CIR) holds

Hard

A. the next address B. the instruction currently being decoded and executed C. the cache D. the BIOS

Question 8

8Pipelining in a CPU means

Hard

A. overlapping the fetch, decode and execute stages of different instructions B. cooling the CPU with water C. running only one instruction a day D. connecting two monitors

Question 9

9The von Neumann bottleneck refers to

Hard

A. a full hard disk B. a broken CPU fan C. slow typing D. the limit on speed caused by instructions and data sharing one bus to memory

Question 10

10The control bus carries

Hard

A. only addresses B. signals such as read, write and clock from the control unit C. mains electricity D. only data