Computer Science 217 – Introduction to Python

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Computer Science (CPSC 217-UCAL) Final Exam

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Question 1

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

Question 2

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	7DC
B	8DCD
C	7C4
D	7DDC

Question 3

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

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

Question 4

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

A	F8D5
B	10 1101
C	10 0010
D	D56

Question 5

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

Question 6

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

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

Question 7

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

Question 8

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

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

Question 9

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

Question 10

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

Question 11

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

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

Question 11 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 12

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 dictionary
B	A string
C	A list
D	A tuple

Question 13

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

A	An error
B	5
C	8
D	6
E	2

Question 14

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

A	To crash the program in an event the output is invalid.
B	To print out a meaningful error messages.
C	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.
D	To limit errors.

Question 15

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

myList = [ ]

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

Question 16

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 17

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

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

Question 18

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 18 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 19

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

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

Question 20

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

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

Question 21

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 21 Explanation: 

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

Question 22

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

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

fun1()

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

Question 23

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

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

A	True
B	4
C	No
D	Yes
E	False

Question 24

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

A	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.
B	A primary key is a unique value associated with each row in a table
C	Text files and databases are both viable options for managing large amounts of data
D	In a relational database, the schema describes the structure of the data in the database
E	In a string, there is a unique index number associated with each value. Hint: Strings do not have index numbers.

Question 25

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

A	True
B	False

Question 25 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 26

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

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

Question 27

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

Question 28

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	quick sort
B	insertion sort
C	selection sort
D	bubble sort

Question 29

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	True
B	False

Question 29 Explanation: 

You can use if, len and condition checks.

Question 30

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

A	False
B	True

Question 30 Explanation: 

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

Question 31

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

Question 32

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

A	boolean
B	integer
C	float
D	string
E	lists

Question 33

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

A	False
B	True

Question 34

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	1
B	10
C	4
D	2
E	5

Question 35

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

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

Question 36

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

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

Question 37

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

A	lengths
B	values
C	multipliers
D	index numbers
E	keys

Question 38

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

Question 39

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

A	Yes
B	No

Question 39 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 40

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

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

Question 41

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

Question 41 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 42

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

A	False
B	True

Question 43

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 43 Explanation: 

MacOx 9 and up \r
Windows \r\n

Question 44

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

Question 45

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	Slice the either one of the lists into its elements and place them in a new list called s3.
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	s3 = s1 + s2
D	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()

Question 46

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

Question 47

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

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

Question 48

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	sttder
B	file
C	math
D	sys
E	open

Question 49

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

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

Question 50

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

A	True
B	False

Question 51

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

A	1
B	45
C	3
D	0
E	9

Question 52

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 53

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

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

Question 54

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

Question 55

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

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

Question 56

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

A	Yes
B	No

Question 57

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

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

Question 58

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

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

Question 59

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 user input processing by the database.
E	The complexity of the database.

Question 60

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 61

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

Question 62

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

Question 63

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	0
C	9999
D	5
E	1

Question 64

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 64 Explanation: 

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

Question 65

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

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

Question 66

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

A	True
B	False

Question 67

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

A	The formal parameters are variables in a function definition and actual parameters are the values passed into a function when it is called in.
B	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.
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 68

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

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

Question 69

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

A	keys
B	values
C	units
D	commas

Question 70

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

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

Question 71

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

Question 72

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

A	True
B	False

Question 73

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

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

Question 74

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

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

Question 75

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

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

Question 76

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

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

Question 77

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

Question 78

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

A	False
B	True

Question 78 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 79

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

Question 80

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	Data
B	Stack
C	Text
D	Heap

Question 80 Explanation: 

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

Question 81

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

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

Question 82

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

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

Question 83

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

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

Question 84

... 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 85

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

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

Question 86

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

A	False
B	True

Question 86 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 87

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

A	45
B	15
C	54
D	19
E	0

Question 88

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

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

Question 89

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 90

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

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

Question 91

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	6
C	5
D	4
E	7

Question 92

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

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

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