Software Testing Performance & Load Testing 2

Question 1

Which open-source tool is most widely used for load testing and measuring web application performance?

Accepted Answer

Apache JMeter

Answer

Selenium

Answer

Cucumber

Answer

Postman

Question 2

What does the 95th percentile response time tell you during performance test analysis?

Accepted Answer

The response time below which 95% of all requests were completed

Answer

The average response time across all requests

Answer

The fastest response time recorded in the test

Answer

The response time above which 95% of all requests were completed

Question 3

What is 'think time' in the context of load test scripting?

Accepted Answer

The simulated pause a virtual user waits between actions to mimic real behavior

Answer

The server-side processing time for handling a request

Answer

The time a performance engineer spends analyzing test results

Answer

The interval between consecutive test script executions

Question 4

Which performance metric represents the percentage of requests that did not complete successfully during a test run?

Accepted Answer

Error rate

Answer

Response time

Answer

Throughput

Answer

Apdex score

Question 5

What is the Apdex (Application Performance Index) score designed to measure?

Accepted Answer

User satisfaction with application response times on a 0-to-1 scale

Answer

Server CPU utilization during peak load

Answer

The raw count of concurrent users in a test

Answer

Database query execution time distribution

Question 6

In a performance test configuration, what does 'ramp-up time' refer to?

Accepted Answer

The period during which virtual users are gradually added to reach the target concurrency

Answer

The total planned duration of the entire load test

Answer

The recovery period after load is removed from the system

Answer

The delay between successive iterations of the test script

Question 7

Which performance testing concept describes the number of users simultaneously active in the system at a given moment?

Accepted Answer

Concurrency

Answer

Throughput

Answer

Latency

Answer

Scalability