1. What is the appropriate bit rate and signal levels if the SNR is 63 and channel bandwidth is 1 MHz?

2. What are the propagation time and transmission time for a message of 5 Megabytes if the bandwidth of the network is 1 Mbps? Assume the distance between the sender and receiver is 12000 km and that light travels at 2.4 x 108 m/sec.

3. What is the SNR needed to put a T-1 Carrier on a 50 kHz transmission line?

4. If a user is interested to transmit images of size 480 x 640 pixels, and each pixel is represented by 24-bits over optical fiber cable. To transmit 60 images/sec, how much bandwidth is required and how many microns of wavelength are needed for this band at 1.30 microns?

5. Draw the ISO: OSI Reference model and explain the functions of each layer in detail.

6. What are the main differences between ISO: OSI Reference Model and TCP/IP Reference model?

7. Explain the functions of each layer of a TCP/IP Reference model with neat diagrams.

8. Draw the ATM Reference model and explain the functions of each layer in detail.

9. What is network Topology? Draw and explain the various network topologies with advantages and disadvantages of each.

10. Explain the functions of various network connecting devices.

11. What is the difference between Multiplexing and Multiple Access? Explain the various multiple access Techniques along with advantages and disadvantages of each technique.