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two hosts, A and B, are separated by 20,000 kilometers and are connected by a link of R=2 Mbps, and there are 4 routers between A and B. Suppose the propagation speed over the link is 2.5*108 meters/sec, average queueing time is 2ms,
processing 3ms on each router. Consider sending a file of 800,000 bits from Host A to Host B. Suppose the file is sent continuously as one large message. How much time for B to receive the whole file after A sent out the first bit?( A little bit explanations please, formulas etc)
Determine the result of scrambling sequence 11100000000000 by using one of the following scrambling techniques? Suppose that last non-zero signal level has been positive.
For each of the following attacks, say whether the attack can be detected and mitigated (to a significant degree) by a stateless or stateful firewall. Explain briefly.
Write down the main advantages to using Domain controlled network? Write down some concerns and disadvantages to switching to domain network?
The purpose of this assignment is to enable students to critically evaluate all aspects of an organisation that uses e-Commerce and e-Business and communicate these key issues through a written report based on the questions for case study released..
Outline the design of a wireless network to support user mobility over a wide area. Include in your answer a discussion of addressing, routing and the used of fixed versus ad hoc network access nodes or base stations.
How would the maturation of the industry worldwide impact your business strategy?
Find out how many users a cell can support for a 5% call---blocking rate. Assume that each user produces 35mE of load in the busy hour.
In second strategy, packets are not acknowledged individually, but whole file is acknowledged when it arrives. Explain the two approaches.
What is the social effect of online social networks? 200 words Describe an experience in facebook. at least 100 words.
A typical signal sequence in synchronous connection contains significant amount of information in addition to just intended message or data.
What is the most important difference between a symmetric key system and a public key system and in what way does a hash function provide a better message integrity check than a checksum
How long does it take to send a file of 640,000 bits from host A to host B over a circuit-switched network? All links are 1.536 Mbps Each link uses FDM.
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