Safe browsing habits in Intro to Computing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if a website URL starts with a secure protocol.

Intro to Computing

if url.startswith([1]):
    print("Secure connection")

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

A"https://"

B"http://"

C"ftp://"

D"file://"

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'http://' instead of 'https://'

Confusing other protocols like 'ftp://'

Websites that start with https:// use a secure connection.

2fill in blank

medium

Complete the code to block access to a list of unsafe websites.

Intro to Computing

if website in [1]:
    print("Access blocked")

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

Atrusted_sites

Bsafe_sites

Cunsafe_sites

Dfavorite_sites

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'safe_sites' which is the opposite

Using unrelated lists like 'favorite_sites'

We check if the website is in the list of unsafe_sites to block it.

3fill in blank

hard

Fix the error in the code that warns about suspicious links.

Intro to Computing

if 'http://' [1] url:
    print("Warning: Suspicious link")

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

Ain

Bnot in

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' which checks equality

Using 'not in' which reverses the logic

The keyword in checks if 'http://' is part of the URL string.

4fill in blank

hard

Fill both blanks to create a dictionary of websites with their safety status.

Intro to Computing

site_status = {site: [1] for site in websites if site [2] unsafe_sites}

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

Asite.upper()

Bsite.lower()

Cin

Dnot in

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'site.upper()' which changes case incorrectly

Using 'in' which includes unsafe sites

We convert site names to lowercase and include only those not in unsafe_sites.

5fill in blank

hard

Fill all three blanks to filter and map safe websites with their URL lengths.

Intro to Computing

safe_lengths = [1]: len([2]) for [3] in websites if [2] not in unsafe_sites}

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

Asite

Burl

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing variable names causing errors

Using 'url' inconsistently

We use 'site' as the key, 'url' as the value to measure length, and iterate with 'site'.