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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 is 4Test? 4Test is a test scripting language which is used by SilkTest to compose test scripts to perform automated tests. It's an object-oriented fourth-generation langua
where star topology used in daily life
Explain SDLC ? Ans) SDLC-( software development life cycle) is an acronym.
What are the main objectives of reverse engineering? The main objectives of the reverse Engineering process are: (i) It helps the companies to understand the difficulties
Q. Explain Test harness systems and Test archiving systems? Test harness systems: This is one that is bound around the test object and that permits the easy modification a
A Software Requirements Specification (SRS) is a complete description of the behavior of the system to be developed. It includes a set of use cases, describing the interactions
Load testing is testing an application under heavy loads, like the testing of a web site under a range of loads to verify at what point the system response time will degrade or fai
why srs is also called black box specificaton
What are the types of metrics? Direct metrics - It refers to immediately measurable attributes. Example -Execution speed, Lines of code. Indirect metrics - It refers to the
Q. What is Standard enforces? Standard enforces This tool is like a code inspector; expect that the rules are generally simpler. The main distribution is that a full-blown
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