Q.1. If we have 10 devices in a mesh topology, what is the number of links or ca
ID: 3595376 • Letter: Q
Question
Q.1. If we have 10 devices in a mesh topology, what is the number of links or cables needed assuming duplex mode communication? How many ports are needed for each device?
Q.2. (a) Write the main function of each layer in TCP/IP Model.
(b) What is the difference between TCP and UDP protocols in terms of reliability, and ordering?
Q.3. Describe Data and Signal in the form of Analog and Digital.
Q.4. Discuss about the causes of Transmission impairment.
Q.5. Describe Shielded twisted pair (STP), Unshielded twisted pair (UTP) and fiber optics in terms of characteristics, advantages and disadvantages.
Explanation / Answer
Answer) The formula to calculate the number of cables/links needed in mesh topology is
Cables Required = [n*(n-1)]/2 where n is the number of devices
So in this case, total number of devices are 10, therefore using the formula,
[10*(10-1)}/2 = 45. Therefore 45 cables are required to connect 10 devices in a mesh topology.
Since number of devices are 10 and in mesh topology each device gets connected with the other which means that each device will have to be connected with the other 9 devices. Therefore, number of ports required for each device are 9. And total number of ports required are 10*9 i.e. 90.
Answer 2 a) The four layers in the TCP/IP model are :
Answer 2b) Difference between TCP & UDP :
TCP UDP Full Form Stands for Transmission Control Protocol Stands for User Datagram Protocol Relaibility Very reliable as it is connection oriented Not reliable as it uses connectionless service Ordering Rearrange the packets transferred in the order specified Packets transffered are independent of each other. No guarantee that the data reaches in the same order as it was transmitted.Related Questions
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