Vertical scaling involves:

• Adding more nodes to a system

• Reducing the number of servers

• Increasing the power of existing hardware

• Spreading load across multiple servers

Which scalability testing approach focuses on testing the limits of the system?

• Load testing

• Usability testing

• Stress testing

• Regression testing

Which metric is most indicative of good scalability?

• Stable response time under increased load

• Low initial latency

• Memory fragmentation rate

• Short UI animation duration

Which of these is an example of horizontal scaling?

• Switching to a faster SSD

• Upgrading the system’s RAM

• Adding more servers to handle traffic

• Rewriting the software in a faster language

Which metric is typically used to measure web application performance?

• Load time

• Usability index

• Click-through rate

• Server OS version

What does a high throughput value generally indicate?

• Poor network configuration

• Efficient data processing

• Ineffective caching

• High error rates

Which of the following is a key performance metric in API evaluation?

• Endpoint discoverability

• Payload compression ratio

• Latency per API call

• Interface aesthetics

Which of the following best describes ETL in Business Intelligence?

• Evaluate, Transform, Load

• Extract, Transform, Load

• Execute, Transfer, Load

• Extract, Translate, Log

What is a primary purpose of a data warehouse in BI?

• Real-time transaction processing

• Long-term data storage for auditing

• Consolidation of data for reporting and analysis

• Data encryption and security

Which of the following tools is widely used for data visualization in BI?

• MySQL

• Python

• Power BI

• Hadoop