Memory Management Quiz

What must be done for a program to be run?

• It must be brought into memory and placed within a process.

• It must be compiled before execution.

• It must be stored on disk.

• It must be executed directly from the disk.

What is the role of the Memory-Management Unit (MMU)?

• It maps virtual addresses to physical addresses.

• It stores the operating system.

• It manages CPU registers.

• It handles input/output operations.

What is external fragmentation?

• Total memory space exists to satisfy a request, but it is not contiguous.

• Allocated memory may be slightly larger than requested memory.

• Memory is allocated in fixed-size blocks.

• Memory is completely utilized without any gaps.

What is the purpose of base and limit registers?

• To define the logical address space of a process.

• To manage CPU scheduling.

• To allocate memory dynamically.

• To store data temporarily.

What happens during dynamic loading?

• The entire program does not need to be in memory to execute.

• All routines are loaded at once.

• Memory is allocated statically.

• The program is executed directly from disk.

What is the difference between static linking and dynamic linking?

• Static linking combines libraries at compile time, while dynamic linking does so at execution time.

• Static linking is faster than dynamic linking.

• Dynamic linking is only used for system libraries.

• There is no difference.

What is the purpose of the relocation register?

• To add a value to every address generated by a user process.

• To store the base address of the operating system.

• To manage memory allocation.

• To keep track of free memory.

What is the first-fit allocation strategy?

• Allocate the first hole that is big enough.

• Allocate the smallest hole that is big enough.

• Allocate the largest hole available.

• Allocate memory randomly.

What is the significance of logical and physical address spaces?

• Logical addresses are generated by the CPU, while physical addresses are seen by the memory unit.

• They are the same in all address-binding schemes.

• Logical addresses are used for disk storage.

• Physical addresses are only used during execution.

What is internal fragmentation?

• Allocated memory may be slightly larger than requested memory.

• Memory is allocated in fixed-size blocks.

• Total memory space exists to satisfy a request, but it is not contiguous.

• Memory is completely utilized without any gaps.