Performance Metrics and Measurement Techniques: Master Computer System Evaluation

Question 1

Which of the following is **not considered** a key performance metric?

Accepted Answer

Return on investment (ROI)

Answer

Throughput

Answer

Latency

Answer

Energy consumption

Question 2

Which of the following is **not** a widely recognized measurement technique used to evaluate the performance of computer systems?

Accepted Answer

Data mining

Answer

Benchmarking

Answer

Profiling

Answer

Simulation

Question 3

When selecting a performance measurement technique, which of the following factors is **not** a key consideration?

Accepted Answer

Availability of specialized equipment

Answer

Accuracy of the technique

Answer

Cost of conducting the measurement

Answer

Time required to perform the measurement

Question 4

Which of the following is **not** a recognized type of performance counter?

Accepted Answer

Analytical performance counter

Answer

Hardware performance counter

Answer

Software performance counter

Answer

Virtual performance counter

Question 5

What is the primary purpose of Amdahl's Law?

Accepted Answer

To estimate the maximum possible speedup achievable by parallelizing a program

Answer

To determine the actual speedup obtained after parallelizing a program

Answer

To calculate the impact of memory latency on performance

Answer

To predict the performance of a system using a given metric

Question 6

Which of the following is a valid tool for simulating computer systems?

Accepted Answer

Gem5

Answer

Performance Co-Pilot (PCP)

Answer

gprof

Answer

Valgrind

Question 7

What is the main advantage of using benchmarks for performance evaluation?

Accepted Answer

They provide a standardized and repeatable way to compare different systems

Answer

They eliminate the need for actual hardware measurements

Answer

They can accurately predict real-world performance

Answer

They are easy to implement and interpret

Question 8

What is the primary purpose of a performance model?

Accepted Answer

To capture the behavior and characteristics of a system for performance analysis

Answer

To design and implement new computer systems

Answer

To test and validate performance optimizations

Answer

To predict future system performance

Question 9

Which of the following performance metrics is NOT directly measurable during system execution?

Accepted Answer

Accuracy of results

Answer

Execution time

Answer

Memory utilization

Answer

Number of errors

Question 10

What is the primary purpose of using asymptotic notation in performance analysis?

Accepted Answer

To describe the rate of growth of an algorithm's running time

Answer

To measure the absolute time complexity in milliseconds

Answer

To optimize code for a specific processor architecture

Answer

To compare the efficiency of different algorithms

Question 11

What is the main distinction between a benchmark and a stress test?

Accepted Answer

A benchmark evaluates typical system behavior, while a stress test pushes the system to its limits.

Answer

A stress test evaluates typical system behavior, while a benchmark pushes the system to its limits.

Answer

Both benchmarks and stress tests evaluate typical system behavior.

Answer

Both benchmarks and stress tests push the system to its limits.

Question 12

Consider the potential security implications that may arise from implementing performance optimization techniques.

Accepted Answer

Expanded attack surface resulting from new features or modifications.

Answer

Enhanced security due to increased efficiency and speed.

Answer

Unaffected security, as performance optimizations have no impact on security.

Answer

Reduced response time to security incidents due to overall performance improvements.

Question 13

Which performance metric measures the duration between when a system receives a request and when it starts processing it?

Accepted Answer

Latency

Answer

Throughput

Answer

Efficiency

Answer

Utilization

Question 14

What measurement technique compares a system's performance to a predetermined standard, typically using a benchmark program?

Accepted Answer

Benchmarking

Answer

Simulation

Answer

Profiling

Answer

Monitoring

Question 15

What profiling technique provides detailed insights into the execution time of individual lines of code?

Accepted Answer

Line-by-Line Profiling

Answer

Memory Profiling

Answer

Statistical Profiling

Answer

Event Profiling

Question 16

Which performance metric reflects the average number of requests processed by a system per unit of time?

Accepted Answer

Throughput

Answer

Utilization

Answer

Latency

Answer

Efficiency

Question 17

What measurement technique involves creating a virtual environment to test and evaluate system performance under various workload conditions?

Accepted Answer

Simulation

Answer

Monitoring

Answer

Benchmarking

Answer

Profiling

Question 18

Which metric indicates the percentage of time a system's resources are actively engaged in processing tasks?

Accepted Answer

Utilization

Answer

Reliability

Answer

Latency

Answer

Throughput

Question 19

What measurement technique involves examining the behavior of a program at the assembly or machine code level to identify performance bottlenecks?

Accepted Answer

Code Profiling

Answer

Memory Profiling

Answer

Event Profiling

Answer

Statistical Profiling