DCWSN-QBank

DHOLE PATIL COLLEGE OF ENGINEERING, WAGHOLI, PUNE

DEPARTMENT OF COMPUTER ENGINEERING

DCWSN Question Bank

1.            Draw and explain block diagram of data communication system.                               5M

2.            What is a line coding? What are advantages?                                                               5M

3.            Line code the bit stream 110101 using six different methods.                                      6M

4.            Suppose it is desired to transmit at a rate of 64Kbps over 3KHz telephone

5.            channel. What is the minimum SNR in dB                                                                  2M

6.            Explain the PSK, ASK, FSK modulation and demodulation wave forms.                   6M

7.            What is a draw back of Go Back-n protocol? How it is overcome in the selective 

             repeat protocol                                                                                                                 5M

8.            Drive the efficiency of stop and wait protocol.                                                             4M

9.            What is multiplexing ? Explain TDM. How is the frequency of a multiplexer                            determined.                                                                                                                                6M

10.          Explain the concept of CDMA.                                                                                     8M

11.          Explain Bluetooth Technology                                                                                      8M

12.          Explain PCM encoding Technique                                                                                8M

13.          What is B8ZS block technique? Why it is used?                                                           6M

14.          Explain Line coding Technique                                                                                      6M

15.          Describe VLAN                                                                                                               4M

16.          Explain WLAN Technique                                                                                              4M

Unit-II

1.            What is framing in data link layer? Explain the different methods of

framing in data link layer                                                                                                                     8M

2.            Write short notes on (1) flow control in data link layer (2) Error detection

and Correction in data link layer                                                                                                         4M

3.            Write short notes on : (1) 1-bit sliding window protocol

(2) Go-back N protocol                                                                                                                       5M

4.            Write short notes on : (1) Protocol using selective repeat

 (2) Stop and Wait protocol                                                                                                                 5M

5.            What are the key assumptions in dynamic channel allocations in LAN ?   2M

6.            Write short notes on Pure and slotted ALOHA.                                                                   8M

7.            Write short notes on persistent and non persistent CSMA protocols.                                 8M

8.            Explain CSMA with collision detection protocol.                                                              8M

9.            Explain the Wireless LAN protocols in Medium Access Sublayer.                                   6M

10.          Explain (1) Repeater (2) Bridge (3) Router (4) Gateway                                                   4M

UNIT-III

1.            What is a Wireless Sensor Network?                                                                      2M

2.            What are the characteristic requirements of Wireless sensor network?                  4M

3.            What are the hardware components of a Wireless sensor network?                       4M

4.            What are the various operating modes of a transceiver?                                          5M        5.            Explain how WSN is used in Home automation & military applications      8M

6.            Explain the architecture of RFID                                                                     8M