Data Communication Assignment

EENG 33151 DATA COMMUNICATION AND COMPUTER NETWORKS ASSIGNMENT 1 (CO1, CO2 PO1,PO3) stemma Submission Date On or before but not after 12-10-2012 Refer Data Communications and Networking 4th edition, Behrouz A. Forouzan No plagiarism Kindly use A4 sheets 1. For n devices in a network, what is the number of tune links required for a mesh, ring, tutor, and star topology? 2. Assume quin devices atomic number 18 arranged in a mesh topology. How many cables atomic number 18 needed? How many ports are needed for for each one device? 3. What is the conflict amidst an internet and the Internet? 4.When a party makes a local anaesthetic telephone call to another party, is this a point-to-point or multipoint connection? relieve your answer. 5. You have three computers connected by an Ethernet hub at home. Is this a LAN, a MAN, or a WAN? Explain your answer. 6. In a bus topology and ring topology of 8 devices, what happens if one of the nodes is unplugged? 7. Match the avocatio n to one or more layers a. Route determination b. Flow operate on c. Provides access to the end user d. Defines frames e. Mechanical, electrical and functional interface f. Establish, manages and terminates sessions 8.What are the responsibilities of the network layer in the Internet model? 9. What is the difference between a port address, a logical address and a strong-arm address? 10. Define peak. Define frequency. 11. In Europe, the power they use at home has a frequency of 50Hz. What is the period of the sine wave in ms? 12. The frequency of a sign on is 140 KHz, calculate the agree period. 13. The period of a signal is 12 micro seconds, what is its frequency? 14. The period of a signal is 100 ms, what is its frequency in kilohertz? 15. fetch the data art object stream of the following graphical records picpic 16.Draw the graph of Polar RZ organisation for the bit streams, (a) 01001, and (b) 00110011001 17. Draw the graph of NRZ-L and NRZ-I schemes for the following data streams (a) 111100001 and (b) 001100110101 18. Draw the graph of Polar Manchester and Differential Manchester Bi-phase AMI and Pseudo ternary for the bit streams, (a) 010011001 and (b) 00110011 19. An analog signal carries 2 bits per signal element. If 2000 signal elements are sent per second, find the bit rate. 20. An analog signal has a bit rate of 12000 bps and a baud rate of 3000 baud. How many data elements are carried by each signal element?