Answer the following problems.
problem 1) Define signal? describe the significance of signals with respect to data communication and network.
b) What is noise? describe different types of noise.
problem 2)a) describe the basics of encryption? Why data encryption is significant in the protection of data interception?
b) What is data compression? describe the modern data compression technique used for video and audio data.
problem 3) What is throughput? Do analysis of two research paper regarding throughput and submit a research report to your class teacher describing your findings. The report must be up to five pages.
problem 4) Compare SONET and SDH regarding Farming, data rates, Synchronization, Timing loops. Also describe the advances in next generation SONET and SDH?
problem 5) What is packet switching? Describe two various approaches of packet switching? Describe these with respect to advance digital networks.