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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 graph matrix and connection matrix. Graph matrix: A graph matrix is a square matrix whose size (i.e., number of rows and columns) is equivalent to the number of n
1) An environment that having the integral hardware, instrumentation, simulators, software tools, and other support elements required to conduct a test of a logically or physically
Problem: (a) Draw an Entity Relationship Diagram for the given case study. Show entities and relationships on the diagram (attributes should not be shown). Cardinality and op
Q. Explain activities of software maintenance? The Software maintenance is a broad activity that includes enhancement of capabilities, error correction, deletion of obsolete ca
program for full subtractor?
Define System Modelling? Define the processes that provide the needs of the view under consideration. Shows the behaviour of the processes and the assumptions on which t
Write down any four application of a stack. (i) Conversion of infix to postfix form (ii) Reversing of a line. (iii) Removal of recursion (iv) Evaluating post fix expression
main characteristics of software lease
Applicability: It is another significant characteristic of a model. The model should be judged by its degree of applicability across software products that change in size, structu
Software Engineering 1. What is the impact of "information era"? 2. Illustrate whether the linear sequential model of the software process is an accurate reflection of softw
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