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Packet loss and retransmission in TCP
TCP gets reliability by retransmission. An acknowledgement is used to check that data has arrived successfully. If acknowledgement does not reach, the previous data is retransmitted. This is given in the figure below:
What is the Network Layer of the OSI responsible for? Ans) The Network Layer routes data from single node to another sends data from the source network to the destination networ
Determine about the proxy servers There are proxy servers that act as good firewall protection for the entire Intranet system. In some cases, firewall comes as a separate serv
Q. Explain about Mesh Topology? - Dedicated point-to-point links to each other device - n (n-1)/2 links an every device will have n-1 I/O ports - Advantages - Dedic
Suppose a small company wants to develop a computer network of 18 computers in its main office. Due to limited resources the company wants a network architecture where a single com
Q Illustrate Unipolar line coding? - Simplest method is inexpensive - Utilizes only one voltage level - Polarity is habitually assigned to binary 1 a 0 is represented by
SWITCHING: A switched LAN has a single electronic device that sends frames among the connected devices. A hub with several ports simulates a single shared phase. However a swi
Q. Show the Function of Signals? - TD transmitted data - RD received data - DSR data set ready Indicate whether DCE is powered on - DTR signifies data termi
Q. Why congestion occurs? Congestion Emerge if the load on the network is greater than the capacity of the network - Load that is the number of packets sent to the net
8088 pin diagram
What is Frequency borrowing In the simplest case, frequencies are taken from adjacent cells by congested cells. The frequencies can also be assigned to cells dynamically.
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