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QUESTION - Fault Tolerance
(a) Three computers together provide a replicated service. The manufacturers claim that each computer has a mean time between failure of five days; a failure typically takes four hours to fix. What is the availability of the replicated service?
(b) In the gossip architecture, why does a replica manager need to keep both a ‘replica' timestamp and a ‘value' timestamp?
(c) Explain the difference between linearizability and sequential consistency, and why the latter is more practical to implement, in general.
(d) Explain why allowing backups to process read operations leads to sequentially consistent rather than linearizable executions in a passive replication system.
Define query language? A query is a statement requesting the retrieval of information. The portion of DML that includes information retrieval is known as a query language.
What are the characteristics of Software Software is engineered or formed; it is not manufactured in the classical sense. Software doesn't wear out. Although the indu
box diagram with example
QUESTION - Name Services (a) Illustrate with help of a diagram the results of a DNS lookup and an ARP lookup assuming we are using IPv4. (b) Why do DNS root servers hold en
Define debugging. Debugging is explained as the process of removal of defect. It happens as a consequence of successful testing
Quality assurance and standards Standards are the key to effective quality management. They may be international, national, and organizational or project standards. Prod
#This is part of my prog. in matlab and a graph has to be drawn for this equation. >> es0=6.11; T0=273.15; Lv=(2.5)*10^6; Rv=461.5; Td=80:.2:500; e=es0*exp((Lv/Rv).*((1./T0)-(1./T
Question: (a) The relationship between organisations and information technology is a complex one, and is made up of a number of mediating factors which must be considered prior
Q. What is structured programming and why is it important? Ans. Structured programming is a term that was coined in the late 1960's to mean programming without using go to st
CARS-LMS: In this section let us try to learn about a different software package, which is commonly used in some of the libraries abroad. The package is known as CAIRS/LMS or
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