Software Testing Performance & Load Testing 3

Question 1

What does scalability testing primarily verify about a system?

Accepted Answer

That the system can accommodate increasing workloads by adding resources

Answer

That the system functions correctly under standard user workflows

Answer

That the system returns to normal operation after a failure event

Answer

That individual components each perform within their isolated limits

Question 2

In performance testing, what is a 'bottleneck'?

Accepted Answer

A component or resource that constrains overall system throughput

Answer

A specific type of network protocol restriction

Answer

A specialized test focusing exclusively on database performance

Answer

A technique for measuring response time under artificial conditions

Question 3

What scenario does spike testing specifically evaluate?

Accepted Answer

System behavior when load suddenly surges and then drops sharply

Answer

System stability under a steady, sustained load over many hours

Answer

Gradual performance degradation caused by memory leaks over time

Answer

Response time characteristics under the minimum possible load

Question 4

Why is it important to calibrate 'think time' accurately in a load test script?

Accepted Answer

To ensure simulated delays between actions reflect actual user behavior patterns

Answer

To reduce server CPU utilization during test execution

Answer

To adjust response time thresholds to match user expectations

Answer

To correct syntax errors identified in the performance test script

Question 5

What is Chaos Engineering and how does it relate to performance and resilience testing?

Accepted Answer

The practice of deliberately injecting failures into systems to test resilience under real-world conditions

Answer

A method of introducing random code defects to test developer responsiveness

Answer

A technique for randomizing the execution order of automated test suites

Answer

A load testing approach that uses unpredictable and random user navigation paths

Question 6

Which performance testing approach is used to identify the 'knee of the curve'—the point where additional load causes disproportionate performance degradation?

Accepted Answer

Incremental load testing

Answer

Boundary value analysis

Answer

Regression testing

Answer

Equivalence partitioning

Question 7

Why is resource utilization monitoring (CPU, memory, disk I/O, network) considered essential alongside performance metric collection?

Accepted Answer

It helps correlate system resource consumption with observed performance behavior to identify root causes

Answer

It replaces the need to measure response time and throughput directly

Answer

It satisfies regulatory compliance requirements for software testing audits

Answer

It automatically generates performance test scripts based on server activity