Computer Science 217 – Introduction to Python

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Computer Science (CPSC 217-UCAL) Final Exam

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Question 1

After tracing of a code you wrote, you found no errors at all. However, your boss keeps telling you that the program is wrong. It is most likely that your program contains one or more... (ID-CPF-61)

A	runtime error(s).
B	syntax error(s).
C	Boolean error(s).
D	invalid parameter error(s).
E	logic error(s).

Question 2

What is M[2] on the following script? (ID-CPF-90)

A	[4, 5, 6]
B	[7, 8, 9]
C	2
D	5
E	3

Question 3

Which of the following operation is most destructive in used improperly? (ID-CPF-27)

A	inf = open ("file_name.txt", "r")
B	inf = open ("file_name.txt", "w")
C	inf = open ("file_name.txt", "e")
D	inf = open ("file_name.txt", "a")

Question 4

... sort is the method of creating a sorted list by randomly taking an item from the unsorted list and placing in the right location in the sorted list until all the items are sorted. (ID-CPF-45)

A	Bubble
B	Quick
C	Insertion
D	Selection

Question 5

Python 3 can be best described as a... (ID-CPF-34)

A	C# based programming language.
B	relatively complex programming language.
C	high level programming language.
D	low level programming language.

Question 6

This will read from an external text file... (ID-CPF-19)

A	inf = open ("fileName.txt", r)
B	inf = open (fileName.txt, r)
C	inf = open ("fileName.txt", w)
D	inf = open ("fileName.txt", "r")
E	inf = open (fileName.txt, "r")

Question 7

How do you add a tab (like a keyboard tab entry) to a Python 3 statement? (ID-CPF-17)

A	"\t text here"
B	"\tab text here"
C	"\n text here"
D	"\space text here"

Question 8

An empty Tuple can be described as a... (ID-CPF-11)

A	tp = ( )
B	tp = " "
C	tp = { }
D	tp = [ ]

Question 9

You have the following string which you must split in to it's elements describing the each unique item: (ID-CPF-48)
data = "Sanuja Senanayake , Calgary , http://sanuja.com , (403) 111-1111"
The elements should seperate; full name, city, web address, phone number. How do you do that?

A	list = split.data(" , ")
B	data = data.split(" , ")
C	list = split.data(" ")
D	list = data.split(" , ")
E	list = data.split(" ")

Question 10

Which of the following languages can be used to write an algorithm for Python 3? Select all that apply. (ID-CPF-42)

A	Japanese
B	Binary Code
C	English
D	Any version of Python up to and including Python 3
E	Python 3 only
F	Machine code

Question 11

It is possible to create a pure Python 3 code with no other supporting languages to analyze SINs (Social Insurance Number) validity. (ID-CPF-58)

A	False
B	True

Question 11 Explanation: 

You can use if, len and condition checks.

Question 12

Most current databases use relational model to sort and organize elements. (ID-CPF-63)

A	True
B	False

Question 13

How do you take a value from one function and pass it to another? (ID-CPF-51)

A	Take a return from the reading function and pass the return to a variable. Then pass the variable to the next function.
B	Take a reading from the first function and pass it to a variable. Then pass the variable to the next function.
C	After the writing the two functions, make first function equals to the second function. eg. fun1() = fun2()
D	In Python 3, you cannot take data from one function and pass it to another. It is not a valid argument.

Question 14

What would you get when you called in cbc.values() from a dictionary named cbc with some keys and values? (ID-CPF-81)

A	All of the answers are wrong.
B	All the keys and associated values in two independent lists.
C	A list of any dimension, except 1D containing all the values.
D	All the keys with no value data in a list.
E	A list of all the values in the dictionary, cbc.

Question 15

Which of the following statement(s) is(are) correct? (ID-CPF-41)

A	In a relational database, the schema describes the structure of the data in the database
B	In a string, there is a unique index number associated with each value. Hint: Strings do not have index numbers.
C	A primary key is a unique value associated with each row in a table
D	A dictionary cannot be updated using a loop (for loop or while loop) because a dictionary contains more than one dimension. Hint: You can use a loop with two conditions to append to a dictionary.
E	Text files and databases are both viable options for managing large amounts of data

Question 16

In Python 3, dictionary can be ONLY be created in one dimension. (ID-CPF-10)

A	False
B	True

Question 16 Explanation: 

It can be created in several dimensions including 3D and up. However, it is possible to create an empty dictionary and/or an empty key, which may be classify as a 1D system.

Question 17

A heap holds any type of objects allocated as the program runs. (ID-CPF-86)

A	True
B	False

Question 18

Linux based OS versions such as MacOS 9 and up, ONE character is used for a new line and in Windows TWO characters are used for a new line. (ID-CPF-29)

A	False
B	True

Question 18 Explanation: 

MacOx 9 and up \r
Windows \r\n

Question 19

What is the key feature for a high level programming language? (ID-CPF-35)

A	Use of command line infrastructure.
B	Built in libraries and and functions.
C	Use of binary based commands.
D	Use of English language with UTF-8 and up coding system.

Question 20

How do you assign default parameters to a function in Python 3? (ID-CPF-71)

A	def function (i, x, y, z)
B	pass (i, x, y, z) = function (2, 90, 57, 23)
C	function (i=2, x=90, y=57, z=23) Hint: No, you cannot assign default parameters to a function when it is called in!
D	def function (i=2, x=90, y=57, z=23)

Question 21

What is the output of the following operation if a user entered 3 (exactly, no white space or any other characters) as the value? (ID-CPF-08)
power = input("Please enter a value: ")
answer = 5**power
print (answer)

A	Error, mathematical operation with a string.
B	10
C	125
D	25

Question 22

Python 3 will not allow the calling of a function inside another function. (ID-CPF-40)

A	False
B	True

Question 23

What is M[1][2] on the following script? (ID-CPF-92)

A	An error
B	5
C	8
D	2
E	6

Question 24

Which one of the following is NOT a valid Python 3 command? (ID-CPF-32)

A	float()
B	input()
C	Print()
D	for i in range(9):

Question 24 Explanation: 

You cannot interchange capital and simple letters. In this particular example, Print() is NOT a build in function because the "P" in "print()" should NOT be capitalized.

Question 25

What does the following code print when run? (ID-CPF-88)

A	45
B	15
C	19
D	0
E	54

Question 26

In order to open an external file to be used in a Python 3 program, you must import which of the following library? (ID-CPF-25)

A	file
B	math
C	sys
D	sttder
E	open

Question 27

Your credit card information at a bank in Canada is most likely kept in a... (ID-CPF-69)

A	database.
B	encrypted text files (128-bit to 256-bit server side).
C	low level programming code.
D	set of binary codes.

Question 28

A length of a dictionary is always defined by the number of what elements? (ID-CPF-13)

A	keys
B	values
C	commas
D	units

Question 29

On the following Python 3 code, what is ".rstrip()" do? (ID-CPF-55)
data = input("Please enter your name: ").rstrip()

A	Take the white space out of the end print statement.
B	To add the white space formatting at the end of the print statement.
C	Take the carriage return out of the input statement.
D	To add the carriage return into the input statement.

Question 30

In order to preform the following operation, what must be corrected in the following code? (ID-CPF-60)

value = 55
result = sqrt(55)
print (result)

A	Call in the math library; import math
B	Call in the math library; import math Request the function from math; math.sqrt()
C	Call in the sys library; import sys Request the function from sys; sys.sqrt()
D	Call in the sys library; import sys Request the function from math; math.sqrt()
E	Call in the math library; import math Request the function from sys; sys.sqrt()

Question 31

Lists are ordered data structures with specific index values for each item. (no random index assignments) (ID-CPF-57)

A	False
B	True

Question 32

If you were to create a program to keep track of "moody" days of your girlfriend for each month (the same way Android/iOS period & ovulation app), what kind of Python 3 function would you use? (ID-CPF-38)

A	A tuple
B	A string
C	A dictionary
D	A list

Question 33

While the position of a character in a string always counts from zero (0), the counting of the string length always start from one (1). (ID-CPF-37)

A	True
B	False

Question 34

If you were to add one number to another from 0 to 100, what type of method would you use? (ID-CPF-02)

A	A dictionary
B	A iteration loop
C	A while loop
D	A for loop

Question 35

Python 3 ONLY have mutable type. (ID-CPF-15)

A	True
B	False

Question 36

You hit the bonus question! (ID-CPF-33)
Python 3 is extensively used in which of the following programs/areas? (Not going to show up on the exam, but just for fun)

A	Windows Server 2012 / Windows 8 Pro
B	MS Access Database system
C	BlackBerry 10 OS
D	Android OS
E	Online MMO servers

Question 37

In order to satisfy the Python 3 rules, what has to be true in order for a code to be a function? (ID-CPF-03)

A	Functions must always return a result.
B	A single function cannot have more than one result.
C	A function must take a parameter.
D	A function must be predefined in order to call it in.

Question 38

How do you delete all the keys and values from a dictionary named test efficiently? (ID-CPF-80)

A	delete.test()
B	del.keys()
C	del.test()
D	test.clear()
E	clear.test()

Question 39

If you want to iterate all the key values in a Python 3 dictionary name dic, how do you do that in a for loop? (ID-CPF-46)

A	for j in key.dic():
B	for k in keys.dic():
C	for p in dic.keys():
D	for i in dic.key():

Question 39 Explanation: 

Regardless of the letter/name we place for iteration (i,j,k,p), the right format is dicName.keys() to all in all the keys appear in the dictionary named dic.

Question 40

In Python 3 functions, how is formal parameters are different from actual parameters? (ID-CPF-70)

A	The formal parameters are the values passed into a function when it is called in and the actual parameters are variables in a function definition.
B	The formal parameters are variables in a function definition and actual parameters are the values passed into a function when it is called in.
C	The formal parameters are post defined and actual parameters are pre defined.
D	The formal parameters are often used by armature programmers while, most companies and professionals opt for actual parameters in a function definition due it's flexibility. Hint: Whhhhahhhat? Nooooo! It is other way around you buffoon! 🙂

Question 41

Given, (ID-CPF-22)
s = [[0,1],[2,3],[4,5],[6,7],[8,9]]
what will be the output if you were to call in s[3][1] ?

A	An Index Error message
B	4
C	6
D	5
E	7

Question 42

Given, (ID-CPF-23)
s = [[0,1],[2,3],[4,5],[6,7],[8,9]]
what will be the output if you were to call in s[-2][0] ?

A	8
B	Invalid Index Error
C	[8,9]
D	6
E	2

Question 43

In high level programming languages such as Python 3, variables can be called in before they has been created. (ID-CPF-73)

A	True
B	False

Question 43 Explanation: 

An error called, Undefined Variable will cause the program to crash (or go into an except block).

Question 44

The following Python 3 code is written to print "sanuja.com" several times. (ID-CPF-01)
while k > 10:
.... print ("ha")
.... k = k + 2
What's wrong with the code?

A	The variable k is not defined causing a NameError
B	The program will NOT crash, but will also provide no print statements in the terminal.
C	The program will crash due to inaccurate print statement.
D	The usage of a while loop instead of a for loop will create inaccurate results.

Question 45

If a function has to run it's body for few different times and record it's results after completing each iteration, a return can be used to consolidate the results. (ID-CPF-75)

A	False
B	True

Question 45 Explanation: 

Not only this is true in Python 3, but also true in many other languages such as JavaScript, PHP, CSS, C#, etc.

Question 46

What is the output of the following code? (ID-CPF-28)
myName = "Sanuja\nSenanayake"
print (myName)

A	SanujaSenanayake
B	Sanuja Senanayake
C	Senanayake Sanuja
D	Sanuja\nSenanayake
E	Sanuja Senanayake

Question 47

In rational database model, what is schema represents? (ID-CPF-64)

A	The fail-over rate of a database.
B	The structure of the data.
C	The actual data that being stored.
D	The complexity of the database.
E	The user input processing by the database.

Question 48

What is M[3] on the following script? (ID-CPF-90)

A	An error
B	[4, 5, 6]
C	[1, 2, 3]
D	9
E	3

Question 49

This is year 2012 and your prof wants you to write the year on your exam in base-16. If 2012 is in base-10, what is it in base-16? (ID-CPF-30)

A	8DCD
B	7DDC
C	7C4
D	7DC

Question 50

When do we use SQL (Structured Query Language)? (ID-CPF-66)

A	It is used to send commands to database.
B	It is a client side programming language used to display server side Python 3 language operations.
C	It is used to take commands from a database.
D	It is used to take commands from several databases for comparison and analysis.

Question 51

A print statement can be used as a computer code for analysis. (ID-CPF-59)

A	True
B	False

Question 51 Explanation: 

The print() statements provide information for the end user and can NOT be used to create code itself. It adds value to the code, but often is independent of the code itself, except for display purposes.

Question 52

A list will only take in a numeric value, unless you specify the item as a non-numeric. (ID-CPF-77)

A	True
B	False

Question 52 Explanation: 

True because if you want to add a non-numeric item such as a person's name, it must be specified using quotes; eg. "sanuja" OR 'sanuja'

Question 53

Given, (ID-CPF-21)
s = [[0,1],[2,3],[4,5],[6,7],[8,9]]
what will be the output if you were to call in s[3] ?

A	[4,5]
B	[6,7]
C	3
D	2

Question 54

Based on the following information: (ID-CPF-83)
a = [ ] is a ...
b = { } is a ...

A	a = [ ] is a dictionary. b = { } is a list.
B	a = [ ] is ais a tuple. b = { } is a dictionary.
C	a = [ ] is a list. b = { } is a dictionary.
D	a = [ ] is a dictionary. b = { } is a tuple.

Question 55

What is 55 base 8 in base 2 ? (ID-CPF-87)

A	10 1101
B	10 0010
C	F8D5
D	D56

Question 56

What does the following code print if the print(x) on line 6 has been replaced by print(len(M))? (ID-CPF-89)

A	0
B	1
C	9
D	45
E	3

Question 57

On the following list, how do you remove the number 8? (ID-CPF-09)
myList = [1,2,3,8,4,5,6]

A	append.myList(8)
B	myList.pop(8)
C	myList.append(8)
D	myList = [8]

Question 58

Why do we use exceptions in advanced Python 3 programs? (ID-CPF-26)

A	To limit errors.
B	To quite a program in an event the output is invalid. Hint: No, you are confused with INPUT is invalid. This answer reads OUTPUT, hence it is wrong.
C	To crash the program in an event the output is invalid.
D	To print out a meaningful error messages.

Question 59

If you were to add to an empty dictionary name sanuja, how do you do that? (Direct addition without variables.) (ID-CPF-82)
sanuja = { }

A	sanuja[keyName] = valueName
B	sanuja["keyName"] = "valueName"
C	sanuja[keyName] = valueName
D	sanuja["keyName"] = valueName

Question 60

Which type of sorting described by the following statement? (ID-CPF-44)

Find the smallest number in the unsorted list, remove that number and add it to the end o the sorted list. Repeat this sequence until there are no numbers in the unsorted list.

A	bubble sort
B	insertion sort
C	selection sort
D	quick sort

Question 61

Select all the valid dictionary names. (ID-CPF-14)

A	my Dictionary
B	my1988
C	haha
D	myDic
E	c _b999

Question 62

What is the default behavior of a run time errors? (ID-CPF-68)

A	Creation of the except block.
B	Creation of the try block.
C	Crash of the program.
D	Quitting the program by quit() function.

Question 63

Well developed tools for databases such as MySQL, Python libraries primarily used for what purpose? (ID-CPF-67)

A	To allow flexibility for multiple programming languages to interact with each other.
B	To deal with large amounts of data.
C	To create Python code with low level programing codes.
D	To lower failure rate of the connection between data and information.

Question 64

What print statement would be produced from the following while loop? (ID-CPF-39)

A	Canada Alberta Alberta Quebec
B	Canada Quebec Alberta
C	Canada Alberta Quebec
D	Canada Alberta Quebec Alberta
E	An error will be printed because this code is not valid in Python 3.
F	Alberta Quebec Canada

Question 65

How do you exit a Python 3 script in an even of an error? (ID-CPF-53)

A	quit()
B	quit(-1)
C	closed()
D	closed(-1)
E	fclosed()

Question 66

How do you format the output of a numeric answer to two (exactly two) decimal places like shown below? (ID-CPF-62)

A	print ("It is %.2f" % VARIABLE, "TEXT HERE !")
B	print ("It is %.2" % VARIABLE, "TEXT HERE !")
C	print ("It is %.2" % VARIABLE, "TEXT HERE !")
D	print ("It is 2f" % VARIABLE, "TEXT HERE !")
E	print ("It is %2f" VARIABLE % , "TEXT HERE !")

Question 67

What output would you expect from the following program? (ID-CPF-78)

4 in [11,4,73,19,13,24]

A	4
B	Yes
C	False
D	True
E	No

Question 68

Given, (ID-CPF-20)
s = [[0,1],[2,3],[4,5],[6,7],[8,9]]
what will be the output if you were to call in len(s) ?

A	2
B	4
C	1
D	10
E	5

Question 69

Poor commenting in the source file can cause a program to crash. (ID-CPF-74)

A	False
B	True

Question 69 Explanation: 

Comments are for humans not for machines. Strong constructive comments add value to a program by giving information about what each segment of code suppose to do when it runs. It has no value to the computer itself in Python 3. However, on certain programming languages such as PHP it can add additional parameters to the code.

Question 70

Information about function calls and pointers for local variables and formal parameters are stored in as what in a program's memory? (ID-CPF-85)

A	Heap
B	Stack
C	Data
D	Text

Question 70 Explanation: 

... and it's memory may change with time as read and write cycles varies from time to time.

Question 71

The SU Wellness Centre University of Calgary use a Java program for billing. (Similar to Python 3). Do you think a code like the following can be used for calculating the price for medicine in Fall 2012? (ID-CPF-04)
cost = 55.99
gst_multiplier = 0.07
gst = cost * gst_multiplier
total = cost + gst

print ("The total amount you pay %.2f" % total)

A	Yes, this simple program may work.
B	No, this program will crash due to Syntax Error caused by invalid format specifiers.
C	No, this program will not work because the GST calculation is wrong for Fall 2012.
D	No, this program will generate a no print statements because the initial amount is NOT a user input variable.

Question 72

How many characters in the following string? (ID-CPF-36)
s = "Love Canada"

A	11
B	10
C	all of the answers are incorrect!
D	8

Question 73

Is the following variable name is a valid name? (ID-CPF-52)
University of Calgary = Calgary

A	Yes
B	No

Question 73 Explanation: 

Variable name appear on the left side of the assignment operator and the variable itself appear on the right side.

On the left side "University of Calgary" is NOT a valid variable name because you cannot have white space(in this case space) between variable letters. You MAY fix this by replacing a the variable name with, UniversityOfCalgary

Question 74

How many values can a key in a dictionary can hold? (ID-CPF-05)

A	Cannot be more than the number of keys in a particular dictionary
B	One
C	Unlimited given the condition that resources are unlimited
D	More than one and less than zero

Question 75

In general, it is a discouraged to use global variables in a program. But why would you ever want to use one? (ID-CPF-72)

A	To avoid repetition of the same variable in several functions.
B	To avoid limitations of Python 3 coding structure.
C	Only to create small scale programs.
D	There is absolutely no reason to create any global variable regardless of the programming language.
E	To create low memory intensive programs.

Question 76

Which of the following is a mutable type? (ID-CPF-16)

A	integer
B	string
C	boolean
D	lists
E	float

Question 77

How do you add a value to the following empty list? (ID-CPF-07)

myList = [ ]

A	myList.append("125")
B	append.myList(125)
C	myList.append(sanuja)
D	append.myList("sanuja")

Question 78

Dictionary key index number must always increase by one (and exactly one only) integer value. (ID-CPF-56)

A	False
B	True

Question 78 Explanation: 

No, it can increase by any integer value when moving from one key to another.

Question 79

You have the following list with too much information. To protect privacy, you were told to split and print ONLY the geographical information. How do you do that? (ID-CPF-49)
data = "A male who lives in Calgary, Alberta, Canada."

A	print([data:25])
B	print(data[ :25])
C	print(data[20: ])
D	print([data:20])
E	print(data[25: ])
F	print(data[ :20])

Question 80

Can you read from a non-text(.txt) external file using a Python 3 script? (ID-CPF-54)

A	Yes
B	No

Question 81

What is the piping a Python 3 file into Java do? (ID-CPF-18)

A	It makes the communication between Python 3 and Java possible by opening input/output sequences on both direction.
B	It takes the code from Python 3 and use it to process graphical information using Java.
C	It injects the codes of Java into a Python 3 program for processing.
D	It takes the output of the Python 3 program and use it as inputs for Java.

Question 82

To print the statement "That is not a valid divisional operation.", the user could enter what value for the prompt? (ID-CPF-47)

A	1
B	9999
C	-1
D	5
E	0

Question 83

How is text different from data? (ID-CPF-84)

A	Data is human readable and text is not human readable.
B	Data hold program instructions typically in machine code and text point to all global consents and variables.
C	Text hold program instructions typically in machine code and data point to all global consents and variables.
D	Data points to information and text point to all global consents and variables.

Question 84

Which of the following statement is true given a for loop first line; for i in range (x,y)? (ID-CPF-79)

A	x is exclusive and y is inclusive.
B	x and y values are both inclusive.
C	x is inclusive and y is exclusive.
D	x and y values are both exclusive.

Question 85

Dictionaries have ____ to assign position to variables. (ID-CPF-12)

A	multipliers
B	lengths
C	keys
D	index numbers
E	values

Question 86

What is the most efficient way to combine the following two lists? (ID-CPF-24)
s1 = [0, 1, 2, 3]
s2 = [4, 5, 6, 7, 8, 9]

A	Writing a "for" loop with an empty list called s3 = [] that will take each value of s1 and combine it with s2 using s3.append()
B	Writing a "while" loop with an empty list called s3 = [] that will take each value of s1 and combine it with s2 using s3.append()
C	Slice the either one of the lists into its elements and place them in a new list called s3.
D	s3 = s1 + s2

Question 87

Why would this simple function would not work? (ID-CPF-50)

fun1():
.... print ("Done")

fun1()

A	The indentation pf the function is wrong.
B	The function is not defined.
C	The print statement formatting is wrong.
D	The function lacks any meaningful operations.
E	The function failed to return any useful data.

Question 88

This while loop will produce a print statement... (ID-CPF-31)
s = 0
while s < 5:
.... s = (s + 1) % 2
.... print (s)

A	1 0 1 0 1 0
B	1 1 0 1 1 0 1 1 0... to infinity
C	0 1 0 1 0 1
D	0 1 0 1 0 1... to infinity
E	1 0 1 0 1 0... to infinity

Question 89

Which type of data sorting technique is built into Python 3 functions library? (ID-CPF-43)

A	selection sort
B	insertion sort
C	bubble sort
D	loop sort
E	quick sort

Question 90

Which one of the following is a list? (ID-CPF-06)

A	myList = (1,2,3,UofC,5.5,#)
B	myList = [peace, "25", sanuja, "666", BBC, 2012]
C	myList = {peace, "25", sanuja, "666", BBC, 2012}
D	myList = {2.5, -9.9, "sanuja", 9615, "BBC", 12}
E	myList = [2.5, -9.9, "sanuja", 9615, "BBC", 12]
F	myList = [peace, "25", sanuja, "666", BBC, 2012]

Question 91

If a incorrect value is passed in to a function, what will happen when program runs? (ID-CPF-76)

A	It will skip over the body of the function and run the rest of the code.
B	It will either crash or look for an except block before it will reach the function.
C	It will either crash or look for an except block once it has at least entered the function once.
D	It will stop working, just before it run to to the incorrect values.

Question 92

According to relational model, it is easy to analyze, process and produce meaningful outputs from large scale databases when what has been done? (ID-CPF-65)

A	Pulling data out one at a time and comparing the values against information.
B	Replacing data with information AFTER processing the initial condition.
C	Replacing data with information BEFORE processing them.
D	Organization of data into tables.
E	Splitting of large scale data schemes into small scale schemes.

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Credits: Based on the excellent class notes provided by, Dr. Ben Stephenson during Fall 2012.
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