CH6.

Which of the following is used to define the logical address space of a process and ensure address protection?

• Base and limit registers

• Memory management unit

• Paging table

• Segment descriptor

Which hardware device maps virtual addresses to physical addresses at run time?

• Memory management unit

• Central processing unit

• Input/output controller

• Logical address generator

Which type of linking combines system libraries and program code into the binary program image?

• Static linking

• Dynamic linking

• Internal fragmentation

• External fragmentation

What is the purpose of a backing store in the context of swapping?

• It stores the physical addresses of processes.

• It provides direct access to memory images on disk.

• It holds the interrupt vector for the operating system.

• It facilitates the transfer of memory between processes.

Which memory management technique divides physical memory into fixed-sized blocks called frames?

• Paging

• Swapping

• Contiguous allocation

• Segmentation

Which type of storage-allocation algorithm allocates the smallest hole that is big enough to satisfy a memory request?

• First-fit

• Best-fit

• Worst-fit

• Quick-fit

Which type of fragmentation refers to the situation where available memory is not contiguous, resulting in wasted space?

• Internal fragmentation

• External fragmentation

• Static linking

• Dynamic linking

What is the purpose of a memory management unit (MMU) in memory management?

• It maps virtual addresses to physical addresses.

• It manages the allocation of memory to processes.

• It provides a backing store for swapped-out processes.

• It handles dynamic linking of program code.

Which memory management technique separates the user logical memory from physical memory and allows only part of the program to be in memory for execution?

• Swapping

• Segmentation

• Demand paging

• Contiguous allocation

Which technique is used to reduce external fragmentation by shuffling memory contents to place all free memory together in one large block?

• Compaction

• Paging

• Swapping

• Partitioning