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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.
(a) Visual Basic is governed by an event processor. Explain the meaning of this phrase. (b) Differentiate between an event procedure and a general procedure. (c) "For datab
Give the procedure of the Delphi method. 1. The co-ordinator shows a specification and estimation form to each expert. 2. Co-ordinator calls a group meeting in which the exp
Iterative waterfall model The iterative waterfall model is as shown in the following figure. Requirement gathering phase in which all needs are identified. The design
Define Behavioural Modelling. The state transition diagram shows the characteristics of a system by depicting its states and the events that cause the system to change state
Q. Consider the program given below void main() { int i,j,k; readln (i,j,k); if( (i k) ) { writeln("then part"); if (j writeln ("j
what is formal technical review?
Draw an E-R diagram for the following situation: an account is a relationtion between cutosmer and bank. A customer had a name.
Decision-making is the activity of deciding appropriate action in given situations. Having useful information helps to reduce the uncertainty in decision-making. Information is
Searching the Database: Searching the database and printing the results of a search are important features associated with CDS/ISIS package. The query formulation strategy pro
Q. What are the Debugging programs? Debugging programs:-A program which runs simultaneously with the program under test and provides commands to examine memory and registers st
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