Explain the following types of Networks and Telecommunication principles

Use short answers to explain the difference between: 1. Synchronous and asynchronous 2. Analog and digital 3. XON and XOFF 4. Simplex and duplex 5. Serial and parallel transmission 6. Baseband and broadband 7. Serial Line Internet Protocol (SLIP) and Point-to-Point Protocol (PPP) 8. Hypertext Transfer Protocol (HTTP) and File Transfer Protocol (FTP) 9. Transmission Control Protocol (TCP) and Internet Protocol (IP) 10. Rotary and Dual Tone Multi-frequency (DTMF) 11. Wide Area Telecommunications Service (WATS) and leased lines 12. Private Branch eXchange (PBX) and Centrex 13. The layers of the International Organization for Standardization-Open Systems I... click for more

Statistics show that most projects fail for some reason or other. What are the major reasons that IT projects succeed?

Statistics show that most projects fail for some reason or other. What are the major reasons that IT projects succeed? Be very specific when you identify the reasons for success. Make sure that you justify your reasoning; indicate your source of information (observation, own experience, studies done by others, etc.).

Describe, how fill rate will evolve with different buffer sizes. What consideration should we take if the TCP is replaced with the UDP protocol?

Consider the client buffer shown in the enclosed figure. Suppose that the server pushes the media into the socket as quickly as possible, and the available TCP bandwidth is >>d. [1] Consider the following three scenarios: a) the buffer is big enough to contain the whole media. b) the buffer can only store one-third of the media. c) the buffer can contain only one-tenth of the media. Describe how x(t) and the contents of the client buffer will evolve over time. [2] Describe what consideration we should take if the TCP is replaced with the UDP protocol.

Few questions related to packet loss, different fixed playout delays and jitter.

Answer the following questions based on the enclosed figure. [a] Explain why the packets received curve (step line) looks different from the packets-generated curve. [b] Suppose that packets are played right away as they are received, identify the points where jitter is most obvious. [c] What would happen to the point indicated on the graph as a missed play-out if packets are played as they are received? [d] What do we gain by delaying the play-out schedule?

Give the sequence of transmitted packets when preemptive priority queuing is used at the departure.

In the enclosed figure, the sequence of departed packet is: 1, 3, 2, 4, and 5. What will be the sequence if preemptive priority queuing is used instead?