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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.
What are the advantages of evolutionary prototyping? i. Fast delivery of the working system. ii. User is included while developing the system. iii. More useful system can
what is the advantage of Iterative Enhancement Model in developing a system?
State the term- Code Coverage This is an analysis method that determines which parts of software have already been covered by test case suite and which are remaining.
5. Write a c++ program to find the sum of 0.123 ??103 and 0.456 ??102 and write the result in three significant digits.
Explain the role and functions of a Systems Analyst in the overall project development.
Explain in detail about software Maintenance. Software maintenance is an action in which program is modified after it has been put into use. Maintenance is termed as the
What is a cohesive module? A cohesive module performs only "one task" in software process with little interaction with other modules. In other words cohesive module performs on
Task You have to design a digital system to produce a PWM signal that produces pulses at a frequency in the range 50 Hz -100 Hz . The pulses will be between 1 ms and 2 ms du
Software Quality Assurance and Software Quality Control SQA verifies if the process that is followed to form a product is effective and does not have process defects while SQC
Construct an E-R diagram for a department store database. This database contains information about customers, items they order, departments in the store, employees, and suppliers o
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