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Saturday, 1 July 2017

PT - Basics Interview Question #10

Q. 46 How can you identify performance test use cases for any application?
Ans: The identification and the priority of the performance test case should be done on the basis of volume. Also, the first preference should be given to the core functionality. Testing is done to measure the performance of every action performed under core functionality/flow. Once the core functionality is covered then next preference should be given to those functionalities which are having database operations, concurrency limit etc.

Q. 47 What is the formula to calculate Pacing?

Ans: The formula is:
Pacing = (No. of users / TPS) - (End to End Response Time + Think Time)
Q. 48 Tell a scenario where throughput is increasing with response time means when they are directly proportional?
Ans: Condition A: 
a. when user load increases
b. the network has sufficient bandwidth
c. application crossed its average load bearing capacity
Condition B:
a. when there are lots of CSS (Cascading Style Sheet) in the application which are not ignored in the script.
In these cases, throughput increases along with response time

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