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Problem
1. Explain why the use of a standard high-level language does not guarantee that software will be portable across a range of machines
2. Draw possible data flow diagram of system design for the following application. Part of the electronic mail system which presents a mail form to a user, accepts the completed form and sends it to the identified destination
3. Give the difference between restructuring and forward engineering
What is meant by software change? Software change is explained as the change in nature of software as the needs of software changes.
A dynamic analysis method which inserts assertions about the relationship among program variables into the program code. The truth of the assertions is determined as the program im
design steps
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
What is a state transition diagram? State transition diagram is basically a collection of states and events. The events cause the system to change its state. It also show what
Write a test program that read an integer n and call a method to display a pattern as follows: 1 2 1 3 2 1 4 3 2 1 ... n n-1 ... 3 2 1 The method header is
Q. Compare and contrast reliability and availability? Ans. Reliability: The probability of failure-free system operation over a specified time in a given environment for a gi
Testing a new or an changed data processing system with the similar source data that is used in another system. The other system is taken as the standard of comparison.
What are the advantages and disadvantages of big-bang? Advantages: This approach is easy. Disadvantages: It is difficult to debug.It is not easy to isolate errors whereas te
Q. Assume that a program will experience 200 failures in infinite time. It has now experienced 100. The initial failure intensity was 20 failures/CPU hr. (i) Determine the cur
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