Operating System MCQs with Answers
Practice important Operating System MCQs with answers and explanations.
Multiple Choice Questions
Q931: The DEC VAX system uses how many levels in its page table?
- A: 3-level paging
- B: 2-level paging
- C: 4-level paging
- D: 5-level paging
View Answer
A
Q932: What does a hashed page table use to handle larger address spaces?
- A: Open hashing
- B: Single-level paging
- C: Hierarchical paging
- D: Linked list indexing
View Answer
A
Q933: Which of the following is NOT a feature of a hashed page table?
- A: Large address space handled efficiently
- B: Smaller page tables
- C: Faster access to page entries
- D: Each entry contains the page’s physical address
View Answer
D
Q934: What kind of page table does a 64-bit UltraSPARC system support?
- A: Inverted page table
- B: Two-level paging
- C: Three-level paging
- D: Seven-level paging
View Answer
D
Q935: What happens when the operating system detects an illegal access to a page?
- A: It traps the illegal access and handles it
- B: The program is terminated immediately
- C: The page is removed from memory
- D: The data is corrupted
View Answer
A
Q936: Which of the following is TRUE about a multi-level paging system?
- A: It helps manage large logical address spaces efficiently
- B: It stores all page information in one single table
- C: It does not require any division of logical addresses
- D: It only supports small address spaces
View Answer
A
Q937: What is the purpose of the valid/invalid bit in a page table entry?
- A: To indicate whether the page is part of the process's address space
- B: To specify the read-write permissions of the page
- C: To mark the page as reserved or unused
- D: To store the physical address of the page
View Answer
A
Q938: A two-level paging system is often used to manage address spaces of size ________.
- A: 32-bit or higher
- B: 16-bit
- C: 8-bit
- D: 64-bit
View Answer
A
Q939: Which of the following is a disadvantage of using an inverted page table?
- A: It requires more time to search for page entries
- B: It increases the size of page tables significantly
- C: It is less flexible than traditional page tables
- D: It cannot handle large address spaces
View Answer
A
Q940: The term "hashed page table" refers to a page table that uses what method to find entries?
- A: Hashing
- B: Linear search
- C: Direct mapping
- D: Binary search
View Answer
A