PSU COMPUTER SCIENCE 101 EXAM 1 STUDY QUESTIONS WITH CORRECT ANSWERS!!

PSU COMPUTER SCIENCE 101 EXAM 1
STUDY QUESTIONS WITH CORRECT
ANSWERS!!
Which term refers to a series of finite steps for solving a problem or carrying out a
task?
a. pattern
b. algorithm
c. decomposition
d. level of abstraction - ANSWERalgorithm

Why are computer scientists interested in algorithm efficiency?
a. Efficient algorithms increase the security of computer programs.
b. Efficient algorithms always produce a programming blueprint that can easily be
applied to any programming language.
c. Efficient algorithms produce simple, straightforward computer programs with very
few lines of code.
d. Efficient algorithms tend to produce computer programs that operate efficiently,
quickly, and reliably. - ANSWERd. Efficient algorithms tend to produce computer
programs that operate efficiently, quickly, and reliably.

An effective algorithm _____.
a. applies to only one specific input
b. terminates only upon user request
c. produces at most one output
d. produces one or more outputs - ANSWERd. produces one or more outputs

A compiler uses ____ as input and generates ____ as output.
a. binary executable files; object files
b. object files; binary executable files
c. source code; object code
d. object code; source code - ANSWERc. source code; object code

A(n) ____ is a software utility that begins with the first statement in a program,
preprocesses it into a binary instruction, and then executes it.
a. preprocessor
b. linker
c. interpreter
d. compiler - ANSWERc. interpreter

Which action can cause a runtime error in a program?
a. dividing a number by zero
b. inserting a keyword in the wrong position
c. leaving quotes or brackets unpaired
d. using the wrong variable in a calculation - ANSWERa. dividing a number by zero

, Which action will cause a syntax error?
a. accessing a file that does not exist
b. leaving a keyword out of a statement
c. using the wrong expression for a decision
d. forgetting the order of operations - ANSWERb. leaving a keyword out of a
statement

Which action can cause a logic error in a program?
a. inserting a keyword in the wrong position
b. forgetting to declare a variable before using it
c. using the wrong expression for a decision
d. dividing a number by zero - ANSWERc. using the wrong expression for a decision

When you install Python, it comes with a built-in, easy-to-use integrated
development environment called _____.
a. REPL
b. PyPi
c. PyCharm
d. IDLE - ANSWERd. IDLE

When using IDLE, you choose shell mode _____.
a. in order to save your work for future use
b. by saving your file and then pressing F5
c. when you want to quickly test lines of code
d. by closing the IDLE window on your desktop - ANSWERc. when you want to
quickly test lines of code

Which phrase describes character and string literals?
a. words used by a programming language for a specific purpose
b. named memory locations that hold data that is not changed by the statements in a
program
c. data such as letters, symbols, words, and sentences
d. the words True and False not enclosed in single or double quotes - ANSWERc.
data such as letters, symbols, words, and sentences

____ represents a variable created using camel case and ____ represents a variable
created using snake case.
a. red_sox_inventory_count; redSoxInventoryCount
b. redSoxInventoryCount; red_sox_inventory_count
c. redSoxInventoryCount; Red_Sox_Inventory_Count
d. RedSoxInventoryCount; Red_Sox_Inventory_Count - ANSWERb.
redSoxInventoryCount; red_sox_inventory_count

Suppose you create a Python list containing the elements "J", "A", "W", "S", and 3, in
that order. What are the index values of the first and last elements of this list?
a. 1 and 5
b. 0 and 3
c. 0 and 4
d. 1 and 3 - ANSWERc. 0 and 4