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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.
Explain the role and functions of a Systems Analyst in the overall project development.
Write short notes on empirical estimation models. Estimation model for computer software uses empirically derived formulas to expect effort as a function of line of codes (LOC)
Determine the problems of software maintenance Software maintenance has the below problems: i) It is very cumbersome to analyse and understand code written by somebody.
Discuss about RAD Model Rapid Application Development Model is the one type of incremental model. Gains the high speed development utilising component based construction.
Write short notes on estimation models. Empirical estimation models can be used to complement decomposition techniques and present a potentially important approach in their own
What is Verification represent? Verification represents the set of actions that are performed to confirm that the software correctly implements the particular functionality.
Classify the below techniques into dynamic or static. i. Data Flow Analysis. ii. Use Case Testing. iii. Equivalence Partitioning. iv. Exploratory Testing. v. Inspec
A major book retailer is planning to develop a computer system to handle their new online bookshop: BooksUniverse.com. You have been chosen to do the analysis and design using Obje
What are the benefits of smoke testing? Integration risk is minimized. The quality of the end-product is improved. Error diagnosis and correction are simplified. Asses
Q. Illustrate about System Testing? System Testing: This testing centred on validating the product with respect to software specification Document. Techniques as function testi
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