11) The speed of a central processing unit (CPU) is expressed in cycles called ________.
A) hertz
B) bits
C) bytes
D) pixels
12) A device's cache and main memory are ________.
A) volatile
B) nonvolatile
C) stable
D) nonperishable
13) Which of the following is an example of nonvolatile memory?
A) cache memory
B) main memory
C) magnetic disk
D) RAM drive
14) The memory of a device is said to be nonvolatile if ________ when the system is restarted.
A) its contents are destroyed
B) the memory becomes unusable
C) a new memory is replicated
D) its contents are retained
15) If the contents of a device are lost when the power is turned off, the memory of the device is said to be ________.
A) nonvolatile
B) volatile
C) random
D) discrete
16) Computer hardware consists of electronic components that input, process, output, and store data.
17) The central processing unit is referred to as the brain of a computer.
18) High-end computers can have as many as 16 central processing units.
19) The speed and costs of central processing units are the same across multiple hardware vendors.
20) Some computers have two or more central processing units (CPUs).