To answer this question, you need to understand the different types of performance testing. Let's go through each option to understand why it is correct or incorrect:
Option A) Load Testing - Load testing is the process of subjecting a system to a specific workload to measure its response time and resource utilization. It helps determine how the system performs under normal and anticipated peak load conditions. This test is relevant in the given scenario because it helps TCS PL gather benchmark numbers to decide if horizontal scaling or vertical scaling should be implemented.
Option B) Stress Testing - Stress testing is performed to determine the system's behavior under extreme conditions beyond its normal operating capacity. It helps identify the breaking point of the system and assess its ability to recover. While stress testing is important, it is not directly relevant to determining the scaling strategy in this scenario.
Option C) Volume Testing - Volume testing is conducted to evaluate the system's performance when handling a large volume of data. It helps assess the system's scalability and ability to handle increasing data loads. While volume testing is important, it is not directly relevant to determining the scaling strategy in this scenario.
Option D) System Testing - System testing is the process of evaluating the complete and integrated system to ensure that it meets specified requirements. While system testing is an important aspect of software development, it is not directly relevant to determining the scaling strategy in this scenario.
Based on the explanation above, the correct answer is A) Load Testing. This option is correct because load testing helps TCS PL gather benchmark numbers to decide if horizontal scaling or vertical scaling should be implemented in order to handle the increased workload.