Defect classification (severity, priority) in Testing Fundamentals - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Defect Severity Levels

Which of the following best describes a defect with critical severity?

A A defect that causes the system to crash or lose data, blocking further testing or use.

B A defect that causes minor visual issues but does not affect functionality.

C A defect that affects performance slightly but does not stop the system from working.

D A defect that is related to spelling mistakes in the user interface.

💡 Hint

Think about defects that stop the system from working properly.

Critical severity defects cause major failures like crashes or data loss, making the system unusable.

🧠 Conceptual

intermediate

Priority vs Severity

Which statement correctly distinguishes priority from severity in defect classification?

A Severity measures the impact on the system; priority measures how soon it should be fixed.

B Priority measures the impact on the system; severity measures how soon it should be fixed.

C Severity and priority both measure the impact on the system equally.

D Priority and severity are the same and can be used interchangeably.

💡 Hint

Think about what each term controls in the defect fixing process.

Severity is about how bad the defect is; priority is about how quickly it needs fixing.

❓ data_output

advanced

Classify Defects by Severity and Priority

Given the following defects data, what is the count of defects with high severity and high priority?

Testing Fundamentals

import pandas as pd

defects = pd.DataFrame({
    'id': [101, 102, 103, 104, 105],
    'severity': ['high', 'medium', 'high', 'low', 'high'],
    'priority': ['high', 'low', 'high', 'medium', 'medium']
})

result = defects[(defects['severity'] == 'high') & (defects['priority'] == 'high')].shape[0]
print(result)

A 0

B 3

C 1

D 2

💡 Hint

Filter defects where both severity and priority are 'high'.

Defects 101 and 103 have both high severity and high priority, so count is 2.

🔧 Debug

advanced

Identify the Error in Defect Priority Assignment Code

What error will this code produce when trying to assign priority based on severity?

def assign_priority(severity):
    if severity == 'critical':
        return 'high'
    elif severity == 'major':
        return 'medium'
    else:
        return 'low'

priority = assign_priority('major')
print(priority)

A TypeError because of wrong return type

B NameError because 'priority' is not defined

C SyntaxError due to missing colon after elif statement

D No error, prints 'medium'

💡 Hint

Check the syntax of the if-elif statements carefully.

The elif line is missing a colon at the end, causing a SyntaxError.

🚀 Application

expert

Determine Final Defect Fix Order

You have this list of defects with severity and priority. Which defect should be fixed first based on highest priority and then highest severity?

defects = [
    {'id': 1, 'severity': 'medium', 'priority': 'high'},
    {'id': 2, 'severity': 'critical', 'priority': 'medium'},
    {'id': 3, 'severity': 'high', 'priority': 'high'},
    {'id': 4, 'severity': 'low', 'priority': 'low'}
]

A Defect with id 2

B Defect with id 3

C Defect with id 1

D Defect with id 4

💡 Hint

First sort by priority, then by severity to decide fix order.

Defect 3 has highest priority and high severity, so it should be fixed first.