Intro to Python for Computer Science and Data Science by Paul Deitel Test bank
d. Computing costs are rising dramatically, due to the increasing complexity of hardware and software technologies.
Answer: d. Actually, computing costs are dropping dramatically, due to rapid developments in hardware and software technologies.
1.2 Q2: Every year or two, the capacities of computers have approximately doubled inexpensively. This remarkable trend often is called ________.
a. the law of large numbers
b. the principal of least privilege
c. Moore’s law
d. Wirth’s law
Answer: c.
1.2 Q3: Which logical unit of the computer is the receiving section?
a. input unit
b. output unit
c. memory unit
d. central processing unit.
Answer: a.
1.2 Q4: Information in the memory unit is ________. It’s typically lost when the computer’s power is turned off.
a. persistent
b. constant
c. sticky
d. volatile
Answer: d.
1.2 Q5: A gigabyte is approximately one ________ bytes.
a. thousand
b. million
c. billion
d. trillion.
Answer: c.
1.2 Q6: Information on secondary storage devices is ________ — it’s preserved even when the computer’s power is turned off.
a. volatile
b. unstable
c. transient
d. persistent
Answer: d.
1.2 Q7: Secondary storage information takes much ________ to access than information in primary memory, but its cost per unit is much ________.
a. less time, less
b. more time, less
c. less time, more
d. more time, more
Answer: b.
1.3 Data Hierarchy
1.3 Q1: A(n) ________ is the smallest data item in a computer. It can have the value 0 or 1.
a. bit
b. byte
c. field
d. record
Answer: a.
1.3 Q2: The most popular database model is the ________ database, in which data is stored in simple tables.
a. network
b. graph
c. relational
d. hierarchical
Answer: c.