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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.
Q. Differentiate between iterative Enhancement Model and Evolutionary Development model. Ans. Iterative Enhancement Model: This model has the similar phases as the waterfall
Discuss iterative waterfall Iterative waterfall model a) Requirement collecting phase in which all requirements are specified. b) The design phase is responsible for cr
effects of nativity in requirements specification
Question: (a) What do you understand by the term "integrity"? (b) Which type of attack denies authorized users access to network resources? (c) You have discovered tha
Describe design walk throughs A design walkthrough is a quality practice that allows designers to obtain an early validation of design decisions related to the development and t
Well establish garment factory (large scale- one of country biggest) received order of 40,000 fabric to complete within 12 weeks. (This is well profitable order which cannot be ign
program for full subtractor?
What is a data object? Data object is a collection of attributes that act as an aspect, characteristic, quality, or descriptor of the object.
Draw an E-R diagram for the following situation: an account is a relationtion between cutosmer and bank. A customer had a name.
Explain the Test Specification and Test Suite: - This is a document verifying the test approach for a software feature or combination or features and the inputs, predicted resu
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