Operating System MCQs with Answers
Practice important Operating System MCQs with answers and explanations.
Multiple Choice Questions
Q981: The Intel 80386 uses a _______ for memory access in paged segmentation.
- A: 48-bit logical address
- B: 64-bit offset
- C: 16-bit selector
- D: 32-entry TLB
View Answer
D
Q982: Which of the following is true about the Intel 80386 in paged segmentation?
- A: It uses a 16-bit selector and 32-bit offset
- B: It uses a 32-bit offset and 64-bit selector
- C: It uses only a 16-bit address
- D: It uses a 48-bit physical address
View Answer
A
Q983: When a process generates a logical address, it needs to check if _______ is within the segment length for validity.
- A: The page number
- B: The offset
- C: The segment number
- D: The segment base
View Answer
B
Q984: In MULTICS, a logical address consists of _______ bits for the segment and _______ bits for the offset.
- A: 16 bits, 18 bits
- B: 18 bits, 16 bits
- C: 32 bits, 32 bits
- D: 34 bits, 0 bits
View Answer
B
Q985: In paged segmentation, what does the page table entry provide?
- A: Frame number
- B: Segment base
- C: Segment limit
- D: Offset within the segment
View Answer
A
Q986: In the MULTICS system, what is the maximum number of segments a process can have?
- A: 2^16
- B: 2^18
- C: 2^8
- D: 2^32
View Answer
B
Q987: A legal logical address in paged segmentation must satisfy _______.
- A: d < segment-length
- B: p < segment-length
- C: d' < page size
- D: p > d'
View Answer
A
Q988: In the Intel 80386 example, what does a 16-bit selector indicate?
- A: Privilege level
- B: Segment number
- C: Segment offset
- D: Page table location
View Answer
B
Q989: The main advantage of paged segmentation over pure segmentation is _______.
- A: Faster memory access
- B: Sharing of code and data
- C: No fragmentation
- D: Less memory usage
View Answer
B
Q990: In paged segmentation, each segment has its own _______.
- A: Segment table
- B: Page table
- C: Address space
- D: Offset
View Answer
B