Energy-Aware Computing MCQs

By: Prof. Dr. Fazal Rehman Shamil | Last updated: September 20, 2024

What is the main objective of energy-aware computing?
A) To maximize performance without regard to power consumption
B) To minimize energy consumption while maintaining performance
C) To increase system complexity
D) To enhance the user interface
Answer: B) To minimize energy consumption while maintaining performance

Which of the following techniques is commonly used in energy-aware computing?
A) Constant voltage operation
B) Dynamic voltage and frequency scaling (DVFS)
C) Increasing the clock frequency
D) Ignoring workload variations
Answer: B) Dynamic voltage and frequency scaling (DVFS)

How does workload characterization contribute to energy-aware computing?
A) It has no impact on energy consumption
B) It helps optimize resource allocation based on energy needs
C) It only affects performance metrics
D) It complicates system design
Answer: B) It helps optimize resource allocation based on energy needs

What is the role of energy profiling in energy-aware systems?
A) To identify performance bottlenecks
B) To measure the energy consumption of various components
C) To simplify hardware design
D) To eliminate power supply issues
Answer: B) To measure the energy consumption of various components

Which approach can help reduce energy consumption in mobile devices?
A) Ignoring background processes
B) Implementing sleep modes
C) Constantly running all applications
D) Using outdated hardware
Answer: B) Implementing sleep modes

What does the term “energy harvesting” refer to in energy-aware computing?
A) Collecting and storing energy from the environment
B) Using more energy to enhance performance
C) Ignoring energy sources
D) Reducing energy consumption by shutting down devices
Answer: A) Collecting and storing energy from the environment

Which of the following best describes the concept of “green computing”?
A) Focusing solely on performance
B) Reducing energy consumption and environmental impact
C) Increasing hardware complexity
D) Utilizing non-recyclable materials
Answer: B) Reducing energy consumption and environmental impact

How can virtualization contribute to energy-aware computing?
A) It increases energy consumption
B) It allows multiple applications to share resources efficiently
C) It complicates resource management
D) It requires additional hardware
Answer: B) It allows multiple applications to share resources efficiently

What is the significance of task scheduling in energy-aware systems?
A) It has no impact on energy consumption
B) It helps to optimize resource usage and reduce energy waste
C) It only affects performance metrics
D) It complicates system design
Answer: B) It helps to optimize resource usage and reduce energy waste

Which of the following factors can influence the energy efficiency of a computing system?
A) Hardware architecture
B) Software algorithms
C) User behavior
D) All of the above
Answer: D) All of the above

What does the term “energy-efficient algorithms” refer to?
A) Algorithms that consume maximum energy
B) Algorithms designed to minimize energy usage
C) Algorithms that only improve performance
D) Algorithms that increase system complexity
Answer: B) Algorithms designed to minimize energy usage

Which energy-aware technique involves adjusting the power state of devices based on their usage?
A) Power gating
B) Increasing clock speed
C) Constant operation
D) Ignoring idle states
Answer: A) Power gating

What is the main advantage of using low-power hardware components?
A) Increased energy consumption
B) Enhanced performance without power trade-offs
C) Reduced energy consumption and heat generation
D) More complex designs
Answer: C) Reduced energy consumption and heat generation

Which of the following is a challenge in energy-aware computing?
A) Simplifying energy management
B) Balancing performance with energy consumption
C) Ignoring user needs
D) Reducing component sizes
Answer: B) Balancing performance with energy consumption

How does energy-aware operating system scheduling work?
A) It prioritizes processes without regard to energy use
B) It optimizes task execution to minimize energy usage
C) It increases the number of active processes
D) It complicates the scheduling process
Answer: B) It optimizes task execution to minimize energy usage

What role do sensors play in energy-aware computing?
A) They increase energy consumption
B) They monitor energy usage and environmental conditions
C) They have no significant impact
D) They complicate system design
Answer: B) They monitor energy usage and environmental conditions

Which of the following best describes energy-efficient data centers?
A) Data centers that maximize power consumption
B) Data centers that optimize energy use while providing services
C) Data centers that ignore cooling costs
D) Data centers that use outdated technology
Answer: B) Data centers that optimize energy use while providing services

What is the effect of aggressive power management techniques on system performance?
A) It has no effect
B) It can lead to reduced performance during high-demand tasks
C) It always improves performance
D) It simplifies hardware design
Answer: B) It can lead to reduced performance during high-demand tasks

How does energy-aware computing impact battery life in mobile devices?
A) It has no effect on battery life
B) It can significantly extend battery life through optimization
C) It increases energy consumption
D) It complicates user experience
Answer: B) It can significantly extend battery life through optimization

What is the purpose of using energy-efficient communication protocols?
A) To maximize data transfer speed
B) To minimize energy consumption during data transmission
C) To ignore network traffic
D) To complicate communication
Answer: B) To minimize energy consumption during data transmission

Which of the following strategies can help improve energy efficiency in cloud computing?
A) Over-provisioning resources
B) Dynamic resource allocation based on demand
C) Ignoring user demand
D) Constantly running all services at full capacity
Answer: B) Dynamic resource allocation based on demand

How do energy-aware applications contribute to overall system efficiency?
A) They increase power usage
B) They optimize their resource usage to reduce energy consumption
C) They only focus on user experience
D) They complicate application design
Answer: B) They optimize their resource usage to reduce energy consumption

What is the significance of energy-aware software design?
A) It ignores energy consumption
B) It focuses solely on performance
C) It incorporates energy considerations into software development
D) It complicates user interfaces
Answer: C) It incorporates energy considerations into software development

Which of the following is a common practice in energy-aware computing?
A) Constantly running all processes
B) Scheduling tasks based on energy costs
C) Ignoring power-saving modes
D) Using outdated software
Answer: B) Scheduling tasks based on energy costs

What is the impact of cloud computing on energy-aware design?
A) It increases energy consumption
B) It allows for centralized management of resources and energy savings
C) It complicates resource management
D) It has no impact on energy efficiency
Answer: B) It allows for centralized management of resources and energy savings

How can machine learning techniques aid energy-aware computing?
A) By increasing energy consumption
B) By optimizing resource allocation and predicting energy needs
C) By ignoring data patterns
D) By simplifying the design process
Answer: B) By optimizing resource allocation and predicting energy needs

What is a key characteristic of energy-aware mobile applications?
A) They ignore battery usage
B) They adapt their behavior based on energy availability
C) They increase background processing
D) They run all features at maximum power
Answer: B) They adapt their behavior based on energy availability

Which of the following describes a characteristic of energy-efficient processors?
A) High performance with maximum energy consumption
B) Balanced performance with low energy usage
C) Constant operation at peak performance
D) Increased heat generation
Answer: B) Balanced performance with low energy usage

How does the Internet of Things (IoT) relate to energy-aware computing?
A) IoT devices always consume maximum energy
B) IoT emphasizes the need for energy-efficient designs due to limited power sources
C) IoT devices ignore energy concerns
D) IoT has no relevance to energy usage
Answer: B) IoT emphasizes the need for energy-efficient designs due to limited power sources

What is the purpose of employing real-time energy monitoring in systems?
A) To increase energy consumption
B) To provide insights for optimizing energy usage
C) To complicate resource management
D) To ignore energy efficiency
Answer: B) To provide insights for optimizing energy usage

Which of the following is a challenge in implementing energy-aware strategies?
A) Increased system complexity and potential performance trade-offs
B) Simplifying the design process
C) Eliminating power consumption
D) Ignoring user preferences
Answer: A) Increased system complexity and potential performance trade-offs

Read More Computer Architecture MCQs

1. SET 1: Computer Architecture MCQs
2. SET 2: Computer Architecture MCQs
3. SET 3: Computer Architecture MCQs
4. SET 4: Computer Architecture MCQs
5. SET 5: Computer Architecture MCQs
6. SET 6: Computer Architecture MCQs
7. SET 7: Computer Architecture MCQs
8. SET 8: Computer Architecture MCQs
9. SET 9: Computer Architecture MCQs

• Introduction to Computer Architecture MCQs
  • Evolution of Computer Architecture MCQs
  • von Neumann vs Harvard Architecture MCQs
• Basic Components of a Computer System MCQs
  • Central Processing Unit (CPU) MCQs
  • Memory (RAM, ROM, Cache) MCQs
  • Input/Output (I/O) Devices MCQs
  • Buses (Data, Address, Control) MCQs
• CPU Organization MCQs
  • ALU (Arithmetic Logic Unit) MCQs
  • Control Unit MCQs
  • Registers (General Purpose, Special Purpose) MCQs
  • Flags and Status Registers MCQs
• Instruction Set Architecture (ISA) MCQs
  • Types of Instructions (Data Movement, Arithmetic, Control) MCQs
  • Addressing Modes (Immediate, Direct, Indirect, Indexed) MCQs
  • Instruction Formats MCQs
  • RISC (Reduced Instruction Set Computer) vs CISC (Complex Instruction Set Computer) MCQs
• Microarchitecture MCQs
  • Pipelining (Stages and Hazards) MCQs
  • Superscalar Architecture MCQs
  • Multithreading MCQs
  • Out-of-Order Execution MCQs
• Memory Hierarchy MCQs
  • Cache Memory (L1, L2, L3) MCQs
  • Virtual Memory MCQs
  • Paging and Segmentation MCQs
  • TLB (Translation Lookaside Buffer) MCQs
• Cache Memory MCQs
  • Cache Mapping Techniques (Direct, Associative, Set-Associative) MCQs
  • Cache Coherency MCQs
  • Write Policies (Write-Through, Write-Back) MCQs
  • Cache Miss and Hit MCQs
• Input/Output Organization MCQs
  • I/O Techniques (Polling, Interrupts, DMA) MCQs
  • I/O Mapping (Memory-Mapped I/O, Isolated I/O) MCQs
  • Interrupt Handling MCQs
• Bus Architecture MCQs
  • System Bus (Data, Address, Control) MCQs
  • Bus Arbitration MCQs
  • Synchronous vs Asynchronous Buses MCQs
• Performance Metrics MCQs
  • Clock Speed and Cycles per Instruction (CPI) MCQs
  • MIPS (Million Instructions per Second) MCQs
  • FLOPS (Floating-Point Operations per Second) MCQs
  • Amdahl’s Law MCQs
• Parallelism in Computer Architecture MCQs
  • Instruction-Level Parallelism (ILP) MCQs
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  • Thread-Level Parallelism (TLP) MCQs
  • Symmetric Multiprocessing (SMP) vs Asymmetric Multiprocessing (AMP) MCQs
• Multicore and Multiprocessor Systems MCQs
  • Multicore Architectures MCQs
  • Shared Memory vs Distributed Memory MCQs
  • Interconnection Networks MCQs
• Control Unit Design MCQs
  • Hardwired Control vs Microprogrammed Control MCQs
  • Control Signals and Timing MCQs
  • Instruction Cycle and Control Flow MCQs
• Pipeline Hazards MCQs
  • Structural, Data, and Control Hazards MCQs
  • Techniques to Overcome Hazards (Stalling, Forwarding, Branch Prediction) MCQs
• Branch Prediction and Speculation MCQs
  • Static and Dynamic Branch Prediction MCQs
  • Speculative Execution MCQs
  • Branch Target Buffers MCQs
• Arithmetic and Logic Operations MCQs
  • Integer and Floating-Point Arithmetic MCQs
  • ALU Design MCQs
  • Fixed-Point vs Floating-Point Representation MCQs
• Memory Management MCQs
  • Paging, Segmentation, and Virtual Memory MCQs
  • Memory Protection and Privilege Levels MCQs
  • Memory Allocation and Deallocation MCQs
• Power and Energy Efficiency MCQs
  • Power Dissipation in CPUs MCQs
  • Low-Power Design Techniques MCQs
  • Energy-Aware Computing MCQs
• Advanced Topics MCQs
  • GPU Architecture and Usage MCQs
  • Quantum Computing Basics MCQs
  • Neuromorphic Computing MCQs
• Emerging Trends
  • Cloud Computing Architectures MCQs
  • Edge Computing MCQs
  • AI Accelerators MCQs