Computer Networks
- Lecture Notes, Study Materials and Important questions answers

Subject : Computer Networks

PHYSICAL LAYER

1. Data Communications - Answer (click here)
2. Networks - Answer (click here)
3. Network Models - Answer (click here)
4. OSI Model - Answer (click here)
5. Layers in the OSI Model - Answer (click here)
6. TCP/IP Protocol Suite - Answer (click here)
7. Addressing - Answer (click here)
8. Transmission media - Answer (click here)
9. Guided media - Answer (click here)
10. Unguided media - Answer (click here)
11. Switching - Answer (click here)
12. Circuit-Switched Networks - Answer (click here)
13. Datagram Networks - Answer (click here)
14. Virtual-Circuit Networks - Answer (click here)
15. Dial-up Modems - Answer (click here)
16. Digital Subscriber Line - Answer (click here)
17. Cable TV Networks - Answer (click here)
18. Cable TV for Data Transfer - Answer (click here)
19. Important Short Questions and Answers:Computer Networks - Physical Layer - Answer (click here)

DATA LINK LAYER

1. Data link control- Framing - Answer (click here)
2. Flow and Error control - Answer (click here)
3. Protocols - Answer (click here)
4. Noiseless Channels Protocol - Answer (click here)
5. Noisy Channels Protocol - Answer (click here)
6. High-level Data Link Control (HDLC) - Answer (click here)
7. Multiple Access - Answer (click here)
8. Random Access - Answer (click here)
9. Controlled Access - Answer (click here)
10. Wired LANs - Answer (click here)
11. IEEE Standards - Answer (click here)
12. Standard Ethernet - Answer (click here)
13. Changes in the Standard - Answer (click here)
14. Fast Ethernet - Answer (click here)
15. Gigabit Ethernet - Answer (click here)
16. IEEE 802.11 - Answer (click here)
17. Bluetooth: Architecture and Devices - Answer (click here)
18. Connecting Devices - Answer (click here)
19. Backbone Networks - Answer (click here)
20. Virtual LANs - Answer (click here)
21. Virtual-Circuit Networks: Frame Relay and ATM - Answer (click here)
22. Asynchronous Transfer Mode (ATM) - Answer (click here)
23. Important Short Questions and Answers: Computer Networks - Data Link Layer - Answer (click here)

NETWORK LAYER

1. Logical Addressing - IPv4 Addresses - Answer (click here)
2. IPv6 Addresses - Answer (click here)
3. Internet working and Need for Network Layer - Answer (click here)
4. IPv4 (The Internet Protocol version 4) - Answer (click here)
5. IPv6 - Answer (click here)
6. Network Address Mapping - Answer (click here)
7. Mapping Logical to Physical Address: ARP - Answer (click here)
8. Reverse Address Resolution Protocol (RARP) - Answer (click here)
9. Bootstrap Protocol (BOOTP) - Answer (click here)
10. The Dynamic Host Configuration Protocol (DHCP) - Answer (click here)
11. ICMP - Answer (click here)
12. The Internet Group Management Protocol (IGMP) - Answer (click here)
13. ICMPv6 (Internetworking Control Message Protocol) - Answer (click here)
14. Direct Versus Indirect Delivery - Answer (click here)
15. Forwarding Techniques - Answer (click here)
16. Unicast Routing Protocols - Answer (click here)
17. Multicast Routing Protocols - Answer (click here)
18. Important Short Questions and Answers: Computer Network Layer - Answer (click here)

TRANSPORT LAYER

1. Process to Process Delivery in Transport Layer - Answer (click here)
2. User Datagram Protocol (UDP) - Answer (click here)
3. Transmission Control Protocol (TCP) - Answer (click here)
4. Congestion - Answer (click here)
5. Congestion Control: Open Loop and Closed Loop - Answer (click here)
6. Quality of services - Answer (click here)
7. Techniques to Improve QoS - Answer (click here)
8. Important Short Questions and Answers: Computer Transport Layer - Answer (click here)

APPLICATION LAYER

1. Domain Name System - Answer (click here)
2. Electronic Mail - Answer (click here)
3. File Transfer Protocol (FTP) - Answer (click here)
4. World Wide Web (WWW) - Answer (click here)
5. Hypertext Transfer Protocol (HTTP) - Answer (click here)
6. Multimedia - Answer (click here)
7. Cryptography - Answer (click here)
8. Symmetric Key Cryptography - Answer (click here)
9. Asymmetric Key Cryptography - Answer (click here)
10. Digital signatures: Direct, Arbitrated - Answer (click here)
11. Communication Security: Authentication protocols - Answer (click here)
12. Important Short Questions and Answers: Application Layer - Answer (click here)