Suggestions of DATA COMMUNICATIONS

Chapter - 1+2 (Introduction + Data transmission )

1. What is data communication? Describe simplified data communication model with proper diagram.
2. What is protocol? Describe key elements of protocol.
3. Difference between connection oriented and connectionless protocol.
4. Describe OSI model and TCP/IP protocol.
5. Difference between 3types of transmission mode.
6. Difference between ---- Port Address/Logical address/Physical Address.
7. What is IP address?Calculate subnet mask of IPV4.
8. Frame Relay,X.25 Protocol standard,LAN/WAN.
9. Describe transmission media.
10. Transmission Impairment ,VSAT and Satellite communication.

Chapter - 3 (Data Encoding)

1. Difference -- AM/FM/PM.
2. Describe data encoding and modulation technique.
3. Explain PCM technique.
4. Explain NRZ-L & NRZ-I technique.
5. Explain
   • ASK technique
   • FSK technique
   • PSK technique
   • QAM technique
6. Explain MANCHESTER and Different MANCHESTER encoding.
7. Explain Bipolar AMS technique.

Chapter - 4 (Data Communication Technique)

1. Describe Asynchronous & Synchronous transmission technique.
2. Describe V.24 interface standard.

Chapter - 5 (Data Link Control)

1. Define HDLC. Write down the basic characteristics of HDLC.
2. Describe ---
   • CRC technique
   • ARQ
   • stop and wait ARQ
   • error detection process
   • sliding window protocol
   • GO-BACK-N ARQ frame synchronization
3. What is error control? Write down the different types of error.

Chapter - 6 (Multiplexing)

1. Define ---
   • Multiplexing
   • De-Multiplexing
   • FDM
   • TDM
2. Difference ---
   • Multiplexing & De-Multiplexing
   • FDM & TDM
   • Synchronous & Statistical TDM
   • Multiple & Multilevel TDM
3. Explain Synchronous & Statistical TDM with figure.

Chapter - 7 (Circuit Switching & Packet Switching)

1. Describe :
   • Simple switching Network
   • Circuit Switching
   • Packet Switching
   • Space Division
   • Time Division
   • Datagram Packet Switching
2. What is digital switch? Describe the need of switch.
3. Explain about virtual circuit and datagram approach of packet switching network.
4. Difference between Circuit Switching & Packet Switching.

****Mathematical problem from all the chapters according to text book and board questions should be followed ****

Quote: Your time is limited, so DON'T WASTE IT LIVING SOMEONE ELSE'S LIFE...|| The road to your dreams isn’t always easy to navigate, sometimes dotted with mountains to climb, obstacles to overcome—and hard, mind-numbing times that will make you feel like quitting. Just remember this if you get lost along the way: Anything worth having doesn’t come easy. So don’t turn back around. Don’t give up.|| All our dreams can come true, if we have the courage to pursue them...|| It always seems impossible until it's done || As I look back on my life,I realize that every time I thought I was being REJECTED from something good, I was actually being RE-DIRECTED to something better...|| Failure will never overtake me if my determination to succeed is strong enough. || Believe in yourself. You are braver than you think, more talented than you know, and capable of more than you imagine...|| Believe in yourself, take on your challenges, dig deep within yourself to conquer fears. Never let anyone bring you down. You got to keep going...||