Question 1

What is the [:] operator called?

Accepted Answer

A)  Cut 
B)  Index 
C)  Slice 
D)  Substring 
A)  Cut 
B)  Index 
C)  Slice 
D)  Substring

Question 2

Match each line of code with a result below. Assume aString is initialized as below:
aString = "golden gopher football"
-aString.find('b')

Accepted Answer

A)  5 
B)  19 
C)  1 
D)  2 
A)  5 
B)  19 
C)  1 
D)  2

Question 3

What is the operator represented by the * in the following code? Explain its use.
>>> 'go'*3

Accepted Answer

The operator is the repetition operator

Question 4

What is the string concatenation operator in Python?

Accepted Answer

A)  : 
B)  + 
C)  ~ 
D)  * 
A)  : 
B)  + 
C)  ~ 
D)  *

Question 5

Match each line of code with a result below. Assume aString is initialized as below:
aString = "golden gopher football"
-aString.count('oo')

Accepted Answer

A)  7 
B)  21 
C)  3 
D)  4 
A)  7 
B)  21 
C)  3 
D)  4

Question 6

What does the term "string" refer to in computer science language, and how is a string defined in Python?

Accepted Answer

Strings are simply sequences of characte

Question 7

Case Study 2:
1. def scramble2Encrypt(plainText):
2. evenChars = ""
3. oddChars = ""
4. charCount = 0
5. for ch in plainText:
6. if charCount % 2 == 0:
7. evenChars = evenChars + ch
8. else:
9. oddChars = oddChars + ch
10. charCount = charCount + 1
11. cipherText = oddChars + evenChars
12. return cipherText
-Refer to the code in the accompanying case study 2. What is the name of the % operator used on line 6?

Accepted Answer

A)  Division 
B)  Modulo 
C)  Cipher 
D)  Rail fence 
A)  Division 
B)  Modulo 
C)  Cipher 
D)  Rail fence

Question 8

What is the advantage of a substitution cipher over a transposition cipher?

Accepted Answer

The substitution cipher has one big adva

Question 9

What method can be used to surround a string with spaces in order to make it a certain length?

Accepted Answer

A)  replace 
B)  count 
C)  upper 
D)  center 
A)  replace 
B)  count 
C)  upper 
D)  center

Question 10

How effective is a brute force approach to cracking a substitution cipher? Explain your answer.

Accepted Answer

Brute force is a method in which we try

Question 11

What function converts a character to its Unicode equivalent?

Accepted Answer

A)  str 
B)  chr 
C)  ord 
D)  num 
A)  str 
B)  chr 
C)  ord 
D)  num

Question 12

Case Study 2:
1. def scramble2Encrypt(plainText):
2. evenChars = ""
3. oddChars = ""
4. charCount = 0
5. for ch in plainText:
6. if charCount % 2 == 0:
7. evenChars = evenChars + ch
8. else:
9. oddChars = oddChars + ch
10. charCount = charCount + 1
11. cipherText = oddChars + evenChars
12. return cipherText
-Refer to the code in the accompanying case study 2. What type of cipher has been implemented?

Accepted Answer

A)  Transposition 
B)  Accumulator 
C)  Substitution 
D)  Vignère 
A)  Transposition 
B)  Accumulator 
C)  Substitution 
D)  Vignère

Question 13

Describe the functionality of the string index operator with an example.

Accepted Answer

The index operator [] is an operator tha

What is the [:] operator called?

Match each line of code with a result below. Assume aString is initialized as below: aString = "golden gopher football" -aString.find('b')

What is the operator represented by the * in the following code? Explain its use. >>> 'go'*3

What is the string concatenation operator in Python?

Match each line of code with a result below. Assume aString is initialized as below: aString = "golden gopher football" -aString.count('oo')

What does the term "string" refer to in computer science language, and how is a string defined in Python?

What is the advantage of a substitution cipher over a transposition cipher?

What method can be used to surround a string with spaces in order to make it a certain length?

How effective is a brute force approach to cracking a substitution cipher? Explain your answer.

What function converts a character to its Unicode equivalent?

Describe the functionality of the string index operator with an example.

Introduction to Python: Introduction to Numeric Types, Turtle Graphics, Simple for Loops and Functions

Pthon: Estimating PI: Math and Random Methods, Selection and Boolean Expressions, the Print Function

Introducing the Python Collections: Lists, Dictionaries, Tuples, and Statistics

Bigger Data: File Io: the While Loop, String Formatting, Reading Online Data in CSV and Json Formats

Image Processing: Nested for Loops, Functions As Parameters, Namespaces, Lists of Lists

Data Mining: Cluster Analysis: More on the While Loop; Parrallel Lists

Cryptanalysis: Advanced Dictionaries and Lists, Regular Expressions

Fractals: the Geometry of Nature: Recursion, Grammars and Production Rules

Astronomy: Creating Classes, Writing Constructors, Accessors, Mutators and Special Methods

Simulation:computer Simulation Using Objects

Father Was a Rectangle: Inheritance and Object-Oriented Design

Video Games: Multithreading, Event Handlers, Static Variables

Filters

Exam 3: Codes and Other Secrets: String Operators and Methods, the Len Built-In Function, Keyword Parameters, User Input

What is the [:] operator called?

Match each line of code with a result below. Assume aString is initialized as below: aString = "golden gopher football" -aString.find('b')

What is the operator represented by the * in the following code? Explain its use. >>> 'go'*3

What is the string concatenation operator in Python?

Match each line of code with a result below. Assume aString is initialized as below: aString = "golden gopher football" -aString.count('oo')

What does the term "string" refer to in computer science language, and how is a string defined in Python?

What is the advantage of a substitution cipher over a transposition cipher?

What method can be used to surround a string with spaces in order to make it a certain length?

How effective is a brute force approach to cracking a substitution cipher? Explain your answer.

What function converts a character to its Unicode equivalent?

Describe the functionality of the string index operator with an example.

Introduction to Python: Introduction to Numeric Types, Turtle Graphics, Simple for Loops and Functions

Pthon: Estimating PI: Math and Random Methods, Selection and Boolean Expressions, the Print Function

Introducing the Python Collections: Lists, Dictionaries, Tuples, and Statistics

Bigger Data: File Io: the While Loop, String Formatting, Reading Online Data in CSV and Json Formats

Image Processing: Nested for Loops, Functions As Parameters, Namespaces, Lists of Lists

Data Mining: Cluster Analysis: More on the While Loop; Parrallel Lists

Cryptanalysis: Advanced Dictionaries and Lists, Regular Expressions

Fractals: the Geometry of Nature: Recursion, Grammars and Production Rules

Astronomy: Creating Classes, Writing Constructors, Accessors, Mutators and Special Methods

Simulation:computer Simulation Using Objects

Father Was a Rectangle: Inheritance and Object-Oriented Design

Video Games: Multithreading, Event Handlers, Static Variables

Filters