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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. Explain Information Flow index? Information Flow index Information flow metrics are practical to the components of a system design. For any component A We are able to defi
What are the various types of system testing? 1. Recovery testing - is planned to check the system's ability to recover from failures. 2. Security testing - determines t
Mention some of the drawbacks of RAD model. Not suitable for largescale projects. Commitment of developers & customers are required. Not appropriate when technical ris
Structure chart: A structure chart is a top-down modular design tool, constructed of squares representing the dissimilar modules in the system, and lines that connect them. The l
Explain Infeasible Path? Program statement sequence that can never be implemented.
What things will you remember when making an interface? - A class's interface must be sensible enough. It should act the way user expects it to. - It must be designed from t
Q. Explain the cost drivers and EAF of the intermediate COCOMO model? Ans. There are 15 different attributes described as cost drivers' attributes that determine the multiply
Hoosier Burger''s food ordering system dfd and data dictionary
Draw a memory map for a system with a memory capacity of 256MB. Each memory location in the system is 8 bits. Assume the system has one 4 MB memory block used as ROM residing at th
The important issues that a SRS must address are: (a) System goals and requirements are different (b) Request Definition (c) Request Specification (d) Software Specif
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