problem1. List out the layers of the OSI model and briefly describe the function of each layer.
problem2. List all the three key elements of protocol. Give a brief description of each of these key elements.
problem3. Describe the concept of half duplex transmission.
problem4. Describe the bus topology. Give a merit and demerits of the topology
problem5. Describe the term periodic signal and give an ex of a periodic analog signal.
problem6. A digital signal has ten levels. How many bits are required per level to represent the signal?