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Consider a simplified TCP,S AMID algorithm where the congestion size is measured in number of segments not in bytes in additive increase the congestion window size increases by one segment in each RTT in multiplicative decrease the congestion window size decreases by half (if the result is not an integer, round down to the nearest integer) suppose the two TCP connection C1 and C2 share a single congested link of speed 30 segments per second assume that both C1 and C2 are in the congestion avoidance phase. Connection C1 RTT is 100msec anc C2 RTT is 200msec. Assume that when the data rate in the link exceeds the links speed all TCP connections experience data segment loss.
a) if both C1 and C2 at time t0 have a congestion window of 10 segments what are their congestion window size after 2200 msec
b) in the long run will these two connections get the same share of the bandwidth of the congested link? explain.
The node in Denver crashes completely. How do the other nodes in the country find out about the crash if RIP is used? If OSPF is used?
Try to devise a technique that will allow Arnold to establish a TCP connection with Bernard without application-specific NAT configuration. If you have difficulty devising such a technique, discuss why.
Calculate RSA signature on long message by ?rst computing what the message equals mod n, for some ?xed n and then signing this computed value only. Why or why not?
Given the need for secure, online business communications, analyze network security threats and vulnerabilities and design network security solutions
In second strategy, packets are not acknowledged individually, but the whole file is acknowledged when it arrives. Explain the two approaches.
Assume you are responsible for selecting and maintaining your current employers connection to the Internet. Take some time to research routing protocols
The main memory of a computer is organized as 128 blocks, with a block size of 16 words. The cache has eight block frames. Illustrate direct mapping and address bits that recognize the tag field, the block number, and the word number.
Other building a mainframe computer. What is the best way to connect the workstations to the mainframe computer? Explain your reasoning and all the possible solutions you considered.
Write down the advantages of some of the current technologies including VoIP, Unified Communications, Virtual Private Networks.
Design the datagram and illustrate what contents of each of Next Header fields would contain. You do not have to look up actual numeric value, just explain what it would be referencing next.
Large wide area network covers United States and has multiple nodes in evey state. Node in Denver crashes completely. How do other nodes in the country determine about the crash if RIP is used? If OSPF is used?
Design an algorithm that, under the standard set of assumptions (bidirectional links, total reliability, connectivity), determines maximum value in the ring assuming that there is a unique initiator.
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