OSI vs TCP/IP comparison in Computer Networks - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to name the layer responsible for data transmission in the OSI model.

Computer Networks

The OSI model's [1] layer handles the physical transmission of data over a medium.

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

ASession

BTransport

CApplication

DPhysical

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing Physical layer with Transport or Application layers.

The Physical layer in the OSI model is responsible for transmitting raw bits over a physical medium.

2fill in blank

medium

Complete the code to identify the TCP/IP layer that corresponds to the OSI Network layer.

Computer Networks

In the TCP/IP model, the [1] layer performs routing and addressing similar to the OSI Network layer.

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

ATransport

BApplication

CInternet

DLink

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing Transport and Internet layers.

The Internet layer in TCP/IP handles routing and logical addressing, similar to the OSI Network layer.

3fill in blank

hard

Fix the error in the statement about the number of layers in the OSI model.

Computer Networks

The OSI model has [1] layers in total.

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

A7

B5

C4

D6

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing OSI layers with TCP/IP layers.

The OSI model consists of 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

4fill in blank

hard

Fill both blanks to complete the comparison between OSI and TCP/IP models.

Computer Networks

The OSI model has [1] layers, while the TCP/IP model has [2] layers.

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

A7

B5

C4

D6

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the number of layers between models.

The OSI model has 7 layers, and the TCP/IP model has 4 layers.

5fill in blank

hard

Fill all three blanks to complete the mapping of OSI layers to TCP/IP layers.

Computer Networks

The OSI [1] and [2] layers correspond to the TCP/IP [3] layer.

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

ASession

BPresentation

CApplication

Attempts:

3 left

💡 Hint

Common Mistakes

Assuming each OSI layer maps to a separate TCP/IP layer.

In the TCP/IP model, the Application layer combines the OSI Session, Presentation, and Application layers.

Practice

1. Which of the following correctly states the number of layers in the OSI and TCP/IP models?

easy

A. OSI has 7 layers; TCP/IP has 4 layers

B. OSI has 4 layers; TCP/IP has 7 layers

C. Both OSI and TCP/IP have 5 layers

D. OSI has 5 layers; TCP/IP has 6 layers

Solution

1. Step 1: Recall OSI model layers

   The OSI model is known to have 7 distinct layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

2. Step 2: Recall TCP/IP model layers

   The TCP/IP model has 4 layers: Network Interface, Internet, Transport, and Application.

3. Final Answer:

   OSI has 7 layers; TCP/IP has 4 layers -> Option A

4. Quick Check:

   OSI = 7 layers, TCP/IP = 4 layers [OK]

Hint: Remember OSI 7 layers, TCP/IP 4 layers [OK]

Common Mistakes:

• Confusing the number of layers between OSI and TCP/IP
• Thinking both models have the same number of layers
• Mixing up layer names with layer counts

2. Which layer in the OSI model corresponds to the Application layer in the TCP/IP model?

easy

A. Physical layer

B. Session layer

C. Application layer

D. Network layer

Solution

1. Step 1: Identify OSI layers related to application functions

   In OSI, the Application, Presentation, and Session layers handle application-level tasks.

2. Step 2: Match TCP/IP Application layer

   The TCP/IP Application layer combines OSI's Application, Presentation, and Session layers into one.

3. Final Answer:

   Application layer -> Option C

4. Quick Check:

   OSI Application = TCP/IP Application [OK]

Hint: TCP/IP Application = OSI Application + Presentation + Session [OK]

Common Mistakes:

• Choosing Session or Network layer instead of Application
• Confusing Physical layer with Application layer
• Not knowing TCP/IP layers combine OSI layers

3. Consider this statement: "The TCP/IP model's Internet layer is equivalent to which OSI layer?" What is the correct answer?

medium

A. Transport layer

B. Session layer

C. Data Link layer

D. Network layer

Solution

1. Step 1: Understand TCP/IP Internet layer role

   The Internet layer in TCP/IP handles routing and addressing of packets across networks.

2. Step 2: Match with OSI layer

   The OSI Network layer performs similar functions like routing and logical addressing.

3. Final Answer:

   Network layer -> Option D

4. Quick Check:

   TCP/IP Internet = OSI Network [OK]

Hint: Internet layer matches OSI Network layer [OK]

Common Mistakes:

• Confusing Transport with Network layer
• Choosing Data Link instead of Network layer
• Mixing Session layer with Internet layer

4. A student claims: "The OSI model is mainly used for practical internet communication, while TCP/IP is mostly theoretical." Identify the error.

medium

A. Both models are only theoretical and not used practically

B. The OSI model is theoretical; TCP/IP is practical and used on the internet

C. TCP/IP is theoretical; OSI is practical and used on the internet

D. Both models are practical and used equally on the internet

Solution

1. Step 1: Understand OSI model purpose

   OSI is a conceptual framework mainly used for teaching and understanding networking.

2. Step 2: Understand TCP/IP model purpose

   TCP/IP is the practical protocol suite used for real internet communication.

3. Final Answer:

   The OSI model is theoretical; TCP/IP is practical and used on the internet -> Option B

4. Quick Check:

   OSI = theory, TCP/IP = practical [OK]

Hint: OSI is theory; TCP/IP runs the internet [OK]

Common Mistakes:

• Thinking OSI is used practically on the internet
• Believing TCP/IP is only theoretical
• Assuming both models have equal practical use

5. You want to explain why TCP/IP combines several OSI layers into one. Which reason best applies?

hard

A. TCP/IP was designed for simplicity and practical use, merging related functions

B. TCP/IP has fewer layers because it ignores some networking functions

C. OSI layers are combined in TCP/IP to increase complexity for security

D. TCP/IP layers are fewer because it only supports wired networks

Solution

1. Step 1: Analyze TCP/IP design goals

   TCP/IP was created to be practical and efficient for real-world internet communication.

2. Step 2: Understand layer merging rationale

   It merges OSI's Application, Presentation, and Session layers into one Application layer to simplify the model.

3. Step 3: Eliminate incorrect reasons

   TCP/IP does not ignore functions, nor increase complexity for security, nor limit to wired networks.

4. Final Answer:

   TCP/IP was designed for simplicity and practical use, merging related functions -> Option A

5. Quick Check:

   Simplicity and practicality explain TCP/IP layers [OK]

Hint: TCP/IP merges layers for practical simplicity [OK]

Common Mistakes:

• Thinking TCP/IP ignores networking functions
• Believing TCP/IP is more complex than OSI
• Assuming TCP/IP only supports wired networks