CS6250 COMPUTER NETWORKS
OUTREACH TRAINING FINAL PAPER 2026
FULL QUESTIONS WITH WELL DEFINED
SOLUTIONS EXCELLENT SCORE GRADED
A+
⩥ OSI 7 Layer Model. Answer: 7. Application
6. Presentation
5. Session
4. Transport
3. Network
2. Data Link
1. Physical
⩥ OSI 5 Layer Model. Answer: 5. Application
4. Transport
3. Network
2. Data Link
1. Physical
⩥ OSI Model Advantages. Answer: - Scalability
, - Modularity
- Flexibility
⩥ OSI Model Disadvantages. Answer: - Some layers depend on
information from other layers, which can violate goal of layer separation
- One layer may duplicate lower layer functionalities
- Additional overhead caused by abstraction between layers
⩥ Interface between the application layer & transport layer. Answer:
Sockets
⩥ Application Layer Protocols. Answer: HTTP, SMTP, FTP, DNS, etc.
⩥ What does the application layer do?. Answer: It is the layer which
interacts with the user to provide access to services and data that is
sent/received over a network.
⩥ What does the application layer call a packet of data?. Answer:
Message
⩥ Application layer service/interface/protocol. Answer: Whatever you
want
OUTREACH TRAINING FINAL PAPER 2026
FULL QUESTIONS WITH WELL DEFINED
SOLUTIONS EXCELLENT SCORE GRADED
A+
⩥ OSI 7 Layer Model. Answer: 7. Application
6. Presentation
5. Session
4. Transport
3. Network
2. Data Link
1. Physical
⩥ OSI 5 Layer Model. Answer: 5. Application
4. Transport
3. Network
2. Data Link
1. Physical
⩥ OSI Model Advantages. Answer: - Scalability
, - Modularity
- Flexibility
⩥ OSI Model Disadvantages. Answer: - Some layers depend on
information from other layers, which can violate goal of layer separation
- One layer may duplicate lower layer functionalities
- Additional overhead caused by abstraction between layers
⩥ Interface between the application layer & transport layer. Answer:
Sockets
⩥ Application Layer Protocols. Answer: HTTP, SMTP, FTP, DNS, etc.
⩥ What does the application layer do?. Answer: It is the layer which
interacts with the user to provide access to services and data that is
sent/received over a network.
⩥ What does the application layer call a packet of data?. Answer:
Message
⩥ Application layer service/interface/protocol. Answer: Whatever you
want