Computing

Question 1

1Cache hit ratio of 90% means

Hard

A. the cache is 90% full B. the CPU is 90% busy C. 90% of memory requests are found in cache D. RAM is 90% used

Question 2

2The register that holds data just read from, or about to be written to, memory is the

Medium

A. memory address register B. accumulator only C. memory data register (MDR) D. program counter

Question 3

3The control unit of the CPU

Easy

A. stores files permanently B. displays images C. directs the flow of data and instructions D. prints documents

Question 4

4In the von Neumann architecture, programs and data are

Easy

A. stored only on paper B. kept on separate machines C. stored together in the same main memory D. never stored

Question 5

5The system bus that carries memory addresses is the

Easy

A. control bus B. address bus C. data bus D. USB bus

Question 6

6The power supply unit converts

Easy

A. mains AC to low-voltage DC for components B. DC to AC C. data to light D. sound to data

Question 7

7A CPU with a 3 GHz clock completes how many cycles per second?

Hard

A. 3 × 10⁹ B. 3 × 10³ C. 3 D. 3 × 10⁶

Question 8

8A processor with a clock speed of 3 GHz performs about

Easy

A. 3 billion cycles per second B. 3,000 cycles per second C. 3 cycles per second D. 3 million cycles per second

Question 9

9Which bus carries the address of the memory location being read or written?

Easy

A. data bus B. address bus C. control bus D. power bus

Question 10

10The arithmetic logic unit (ALU) performs

Easy

A. printing B. display output C. storage of files D. calculations and logical comparisons