Software licensing basics in Intro to Computing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print the type of software license.

Intro to Computing

license_type = "GPL"
print("The license is [1]")

Drag options to blanks, or click blank then click option'

AGPL

B"license_type"

Clicense

Dlicense_type

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around the variable name, which prints the name instead of its value.

The variable license_type holds the license name. Using it without quotes prints its value.

2fill in blank

medium

Complete the code to check if the license is 'MIT'.

Intro to Computing

if license == [1]:
    print("License is MIT")

Drag options to blanks, or click blank then click option'

A"MIT"

BMIT

C'GPL'

Dlicense

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around string literals causing errors or wrong comparisons.

String values must be enclosed in quotes when compared in code.

3fill in blank

hard

Fix the error in the code to print 'Free software' if license is 'GPL'.

Intro to Computing

if license == [1]:
    print("Free software")

Drag options to blanks, or click blank then click option'

A'MIT'

BGPL

C"GPL"

Dlicense

Attempts:

3 left

💡 Hint

Common Mistakes

Using the variable name without quotes causing a NameError.

The license name 'GPL' must be a string literal in quotes for comparison.

4fill in blank

hard

Fill the blank to create a dictionary of licenses and their types.

Intro to Computing

licenses = [1]

Drag options to blanks, or click blank then click option'

A"MIT"

B{"GPL": "Open Source", "Windows": "Proprietary"}

C"Proprietary"

D"Open Source"

Attempts:

3 left

💡 Hint

Common Mistakes

Not using curly braces or missing quotes around strings.

Option B provides the complete dictionary enclosed in braces with key-value pairs for licenses.

5fill in blank

hard

Fill all three blanks to filter licenses that are Open Source.

Intro to Computing

open_source = {k: v for k, v in licenses.items() if v [1] [2]
print(open_source.get([3], "Not found"))

Drag options to blanks, or click blank then click option'

A==

B"Open Source"

C"MIT"

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operators or wrong keys in get().

The filter checks if the license type equals 'Open Source'. Then it prints the value for key 'MIT'.

Practice

1. What is the main purpose of a software license?

easy

A. To explain how you can legally use the software

B. To increase the software's speed

C. To make the software free for everyone

D. To change the software's color scheme

Solution

1. Step 1: Understand what a software license is

   A software license is a legal document that tells users what they can and cannot do with the software.

2. Step 2: Identify the main purpose

   The main purpose is to explain the legal use of the software, protecting both the creator and the user.

3. Final Answer:

   To explain how you can legally use the software -> Option A

4. Quick Check:

   Software license = legal usage rules [OK]

Hint: Licenses tell you what is allowed with software [OK]

Common Mistakes:

• Thinking licenses improve software performance
• Assuming all software is free
• Confusing license with software features

2. Which of the following is a correct statement about open source software licenses?

easy

A. They always require payment before use

B. They allow users to view and modify the source code

C. They forbid sharing the software with others

D. They prevent any changes to the software

Solution

1. Step 1: Recall what open source means

   Open source software licenses allow users to see and change the software's source code.

2. Step 2: Check each option

   They allow users to view and modify the source code correctly states that users can view and modify the source code, which is the key feature of open source licenses.

3. Final Answer:

   They allow users to view and modify the source code -> Option B

4. Quick Check:

   Open source = view and modify code [OK]

Hint: Open source means code is open to change [OK]

Common Mistakes:

• Thinking open source always costs money
• Believing open source forbids sharing
• Confusing open source with closed source

3. Consider this scenario: A software is licensed under a commercial license. Which of the following is most likely true?

medium

A. You can freely modify and redistribute the software

B. The software is always open source

C. You must pay to use the software legally

D. You can use the software without any restrictions

Solution

1. Step 1: Understand commercial license meaning

   Commercial licenses usually require payment to legally use the software.

2. Step 2: Evaluate options based on commercial license

   You must pay to use the software legally states payment is required, which matches commercial license rules. Other options describe open source or free use, which are incorrect here.

3. Final Answer:

   You must pay to use the software legally -> Option C

4. Quick Check:

   Commercial license = pay to use [OK]

Hint: Commercial means you usually pay for use [OK]

Common Mistakes:

• Assuming commercial means free to modify
• Confusing commercial with open source
• Ignoring payment requirements

4. A developer wants to share their software but keep control over modifications. Which license type should they choose?

medium

A. Public domain license

B. Permissive open source license

C. Proprietary (commercial) license

D. Copyleft open source license

Solution

1. Step 1: Understand license types and control over modifications

   Copyleft licenses allow sharing but require that modifications remain under the same license, keeping control.

2. Step 2: Compare options

   Public domain gives no control, permissive licenses allow modifications without restrictions, proprietary restricts sharing. Copyleft fits the requirement best.

3. Final Answer:

   Copyleft open source license -> Option D

4. Quick Check:

   Copyleft = share with control over changes [OK]

Hint: Copyleft keeps control while sharing [OK]

Common Mistakes:

• Confusing permissive with copyleft
• Thinking public domain restricts modifications
• Assuming proprietary allows free sharing

5. A company wants to use open source software but avoid legal risks from modifying and redistributing it. What should they do?

hard

A. Use software with a permissive license and keep track of changes

B. Use any open source software without restrictions

C. Only use commercial software to avoid risks

D. Modify software without checking the license

Solution

1. Step 1: Identify risk factors in open source use

   Modifying and redistributing open source software can have legal risks if license terms are not followed.

2. Step 2: Choose best practice to reduce risks

   Using permissive licenses (like MIT or Apache) allows modification with fewer restrictions, and tracking changes helps compliance.

3. Final Answer:

   Use software with a permissive license and keep track of changes -> Option A

4. Quick Check:

   Permissive license + tracking = lower legal risk [OK]

Hint: Pick permissive licenses and document changes [OK]

Common Mistakes:

• Assuming all open source licenses are the same
• Ignoring license terms when modifying software
• Believing commercial software is always safer