OS Chap-4

Front

Which of the following is NOT a memory management requirement? Protection, Sharing, Fragmentation, Relocation

Back

Fragmentation

Front

In fixed partitioning, memory is divided into: Either equal or unequal partitions

Back

Either equal or unequal partitions

Front

A major drawback of fixed partitioning is:

Back

Internal fragmentation

Front

Which of the following is a disadvantage of dynamic partitioning? Increases internal fragmentation, Leads to external fragmentation, Slower memory access, Requires a separate TLB

Back

Leads to external fragmentation

Front

Which memory allocation strategy selects the smallest free partition that is large enough to accommodate a process?

Back

Best-Fit

Front

Paging eliminates which type of fragmentation?

Back

External fragmentation

Front

Virtual memory allows:

Back

Execution of programs larger than the main memory

Front

Demand paging loads a page into memory:

Back

Only when it is needed

Front

Which of the following page replacement strategies removes the least recently used page? FIFO, LRU, Optimal, Random

Back

LRU

Front

Thrashing occurs when:

Back

The system spends more time swapping pages than executing processes