HTTP and HTTPS in Computer Networks - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to identify the protocol used for secure communication on the web.

Computer Networks

The protocol used for secure communication on the web is [1].

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

AFTP

BSMTP

CHTTPS

DHTTP

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing HTTP with HTTPS

Choosing unrelated protocols like FTP or SMTP

HTTPS is the secure version of HTTP, using encryption to protect data.

2fill in blank

medium

Complete the sentence to explain what HTTPS uses to secure data.

Computer Networks

HTTPS uses [1] to encrypt data between the browser and the server.

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

ASSL/TLS

BDNS

CIP

DHTTP

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing HTTP instead of SSL/TLS

Confusing DNS or IP with encryption protocols

SSL/TLS protocols encrypt data to keep it secure during transmission.

3fill in blank

hard

Fix the error in the sentence describing HTTP.

Computer Networks

HTTP is a [1] protocol that does not encrypt data.

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

Anetwork

Bstateless

Csecure

Dencrypted

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'secure' or 'encrypted' which are incorrect for HTTP

Confusing 'network' with protocol type

HTTP is a stateless protocol, meaning it does not keep track of previous interactions.

4fill in blank

hard

Fill both blanks to complete the explanation about HTTPS and HTTP ports.

Computer Networks

HTTP typically uses port [1], while HTTPS uses port [2].

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

A80

B443

C21

D25

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up port numbers

Choosing ports used by other protocols like FTP (21) or SMTP (25)

HTTP uses port 80 and HTTPS uses port 443 for communication.

5fill in blank

hard

Fill all three blanks to complete the sentence about the main difference between HTTP and HTTPS.

Computer Networks

The main difference is that HTTPS uses [1] to encrypt data, making it [2], while HTTP sends data in [3].

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

ASSL/TLS

Bsecure

Cplain text

DIP

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing encryption protocols

Misunderstanding what 'secure' means in this context

HTTPS encrypts data using SSL/TLS, making it secure, while HTTP sends data as plain text.

Practice

1. What is the main difference between HTTP and HTTPS?

easy

A. HTTPS encrypts data, HTTP does not

B. HTTP encrypts data, HTTPS does not

C. HTTP is faster than HTTPS

D. HTTPS uses a different port than HTTP but no encryption

Solution

1. Step 1: Understand HTTP basics

   HTTP is a protocol used to load websites but it sends data in plain text.

2. Step 2: Understand HTTPS security

   HTTPS adds encryption to protect data from being read by others during transmission.

3. Final Answer:

   HTTPS encrypts data, HTTP does not -> Option A

4. Quick Check:

   Encryption = HTTPS [OK]

Hint: HTTPS means secure by encrypting data [OK]

Common Mistakes:

• Thinking HTTP encrypts data
• Believing HTTPS is slower without reason
• Confusing port difference as main feature

2. Which URL prefix indicates a secure website connection?

easy

A. https://

B. ftp://

C. http://

D. file://

Solution

1. Step 1: Identify URL prefixes

   Common URL prefixes include http:// for normal sites and https:// for secure sites.

2. Step 2: Match secure prefix

   HTTPS means the connection is encrypted and secure.

3. Final Answer:

   https:// -> Option A

4. Quick Check:

   Secure URL = https:// [OK]

Hint: Look for 'https://' to know site is secure [OK]

Common Mistakes:

• Choosing http:// as secure
• Confusing ftp:// with secure web protocol
• Not recognizing https:// as secure

3. What will happen if you try to access a website with https:// but the server only supports http://?

medium

A. The browser will automatically switch to http:// and load the site

B. The browser will show a security warning or error

C. The website will load but without encryption

D. The connection will be blocked by the internet provider

Solution

1. Step 1: Understand HTTPS requirement

   HTTPS requires the server to support encryption with a valid certificate.

2. Step 2: Browser behavior on unsupported HTTPS

   If the server does not support HTTPS, the browser cannot establish a secure connection and will warn the user.

3. Final Answer:

   The browser will show a security warning or error -> Option B

4. Quick Check:

   Unsupported HTTPS = Warning [OK]

Hint: No HTTPS support means browser warns user [OK]

Common Mistakes:

• Assuming browser silently switches to HTTP
• Thinking site loads without encryption anyway
• Believing ISP blocks connection

4. A user reports that their browser shows a "Not Secure" message on a website using https://. What is the most likely cause?

medium

A. The browser does not support HTTPS

B. The website is using HTTP instead of HTTPS

C. The user's internet connection is slow

D. The website's SSL certificate is expired or invalid

Solution

1. Step 1: Understand HTTPS and SSL certificates

   HTTPS requires a valid SSL certificate to prove the site's identity and encrypt data.

2. Step 2: Identify cause of "Not Secure" message

   If the certificate is expired, invalid, or missing, browsers warn users even if URL starts with https://.

3. Final Answer:

   The website's SSL certificate is expired or invalid -> Option D

4. Quick Check:

   Invalid SSL = Not Secure warning [OK]

Hint: Expired SSL causes 'Not Secure' warning [OK]

Common Mistakes:

• Thinking HTTP URL causes warning when URL is https://
• Blaming slow internet for security warnings
• Assuming old browsers don't support HTTPS

5. You want to ensure your website visitors' data is safe. Which combination of actions best achieves this?

hard

A. Use HTTP only but add a password to your website

B. Use HTTPS but allow users to access HTTP versions optionally

C. Use HTTPS with a valid SSL certificate and redirect all HTTP traffic to HTTPS

D. Use HTTP and rely on browser security warnings

Solution

1. Step 1: Importance of HTTPS and SSL

   HTTPS with a valid SSL certificate encrypts data and verifies website identity.

2. Step 2: Redirecting HTTP to HTTPS

   Redirecting all HTTP traffic to HTTPS ensures users always use the secure version.

3. Final Answer:

   Use HTTPS with a valid SSL certificate and redirect all HTTP traffic to HTTPS -> Option C

4. Quick Check:

   HTTPS + Redirect = Safe data [OK]

Hint: Always redirect HTTP to HTTPS with valid SSL [OK]

Common Mistakes:

• Thinking password alone secures HTTP
• Allowing HTTP access weakens security
• Ignoring SSL certificate validity