IT 211
Final Exam Review Questions

Part A:

 1. b    2. c.   3. d    4. a    5. d
 6. a    7. b    8. b    9. c   10. d
11. b   12. c   13. d

Part B:

1. 
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2. Variable Trace:

            arr                    i      dictionary
--------------------------------+----+---------------------------
["zero", "one", "two", "three"]        { }
                                   1   { 1: 'one' }
                                   2   { 1: 'one', 2: 'two' } 
                                   3   { 1: 'one', 2: 'two', 3: 'three' }
                s      
----------------------------------
{1: "one", 2: "two", 3: "three"}

Output:
{1: "one", 2: "two", 3: "three"}

3. Variable Trace:    Output:
Class B object b:     //56//
  x     y             5 6
-----+-----           //109//
  5     6
 10     9
 
Part C:

1. Corrected Script:

d = {"CHF": 0.9936, "CHY": 6.3984, "EUR": "0.8608", \
     "GBP": 0.7516, "JPY": 109.05}
target_currency = input("Enter desired currency: ")
amount = float(input("Enter amount to exchange: "))
print("Currency amount in " + target_currency + \
   " is " + str(round(d[target_currency] * amount, 2)))
   
2. Corrected Script:

import json
fin = open("grade-records.json", "r")
json_string = fin.read( )
arr = json.loads(json_string)

# Enter desired first and last name.
desired_first_name = input("Enter desired first name: ")
desired_last_name = input("Enter desired last name: ")      

# Initialize summary variables
total_credit_hours = 0.0
total_grade_points = 0.0

# Print the GPA of the desired person.
grade_dict = {'A': 4, 'B': 3, 'C': 2, 'D': 1, 'F': 0}
for d in arr:
    if desired_first_name == d["first_name"] and \
       desired_last_name == d["last_name"]:
        credit_hours = d["credit_hours"]
        grade = d["grade"]
        grade_points = grade_dict[grade]
        total_credit_hours += credit_hours
        total_grade_points += grade_points * credit_hours

gpa = total_grade_points / total_credit_hours
    
print(f"GPA: {round(gpa, 2)}")