Computer Architecture: Memory Management and CPU Components

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What is a key advantage of using dedicated hardware peripherals for communication over bitbanging?

Improved processing power and speed (correct)
Reduced memory usage
Enhanced security features
Increased flexibility

What is a primary function of the memory management feature in FreeRTOS?

Inter-task communication and synchronization
Efficient use of memory resources (correct)
Interrupt handling and response
Task scheduling and execution

In the context of FreeRTOS, what is the purpose of queues, semaphores, and mutexes?

Memory management and allocation
Interrupt handling and response
Inter-task communication and synchronization (correct)
Task scheduling and execution

What is a primary function of an MMU in a computer system?

Implementing memory protection and virtual memory (D) Signup and view all the answers

Why is bitbanging often used in embedded systems?

When a dedicated hardware peripheral is not available (D) Signup and view all the answers

What is a characteristic of FreeRTOS in terms of its size and efficiency?

Small and efficient (A) Signup and view all the answers

What is the primary purpose of a Page Control Bus Unit (PCB-U)?

Not a widely recognized term in computer architecture (D) Signup and view all the answers

What is a characteristic of asynchronous serial communication?

Uses start and stop bits to frame data bytes (C) Signup and view all the answers

What is a key feature of FreeRTOS that allows for efficient response to hardware events?

Interrupt handling and response (D) Signup and view all the answers

What is the primary application of I2C bus?

Short-distance, intra-board communication (A) Signup and view all the answers

What is a potential issue with circular variable references?

Circular dependency between variables (D) Signup and view all the answers

What type of devices often include MMUs?

Most modern computer systems, including microcontrollers, CPUs, and GPUs (A) Signup and view all the answers

What is a limitation of static memory allocation in embedded systems?

It may limit flexibility and may not be suitable for all applications (D) Signup and view all the answers

What is the primary advantage of pool-based allocation in embedded systems?

It reduces fragmentation and overhead compared to dynamic memory allocation (D) Signup and view all the answers

In which approach is memory allocated and deallocated explicitly by the programmer?

Manual memory management (D) Signup and view all the answers

What is the primary benefit of stack-based allocation in embedded systems?

It is a simple and efficient approach (A) Signup and view all the answers

Why may traditional garbage collection algorithms not be suitable for embedded systems?

They require too many resources (A) Signup and view all the answers

What happens to an object when its reference count drops to zero in reference counting?

It is deallocated (A) Signup and view all the answers