GATE CSE 2024 Set 2 | Memory Management Question 1 | Operating Systems

GATE CSE 2024 Set 2

MCQ (More than One Correct Answer)

-0.33

Which of the following tasks is/are the responsibility/responsibilities of the memory management unit (MMU) in a system with paging-based memory management?

Allocate a new page table for a newly created process

Translate a virtual address to a physical address using the page table

Raise a trap when a virtual address is not found in the page table

Raise a trap when a process tries to write to a page marked with read-only permission in the page table

GATE CSE 2023

MCQ (More than One Correct Answer)

-0.33

Which one or more of the following options guarantee that a computer system will transition from user mode to kernel mode?

Function Call

malloc Call

Page Fault

System Call

GATE CSE 2022

MCQ (Single Correct Answer)

-0.33

Which one of the following statements is FALSE?

The TLB performs an associative search in parallel on all its valid entries using page number of incoming virtual address.

If the virtual address of a word given by CPU has a TLB hit, but the subsequent search for the word results in a cache miss, then the word will always be present in the main memory.

The memory access time using a given inverted page table is always same for all incoming virtual addresses.

In a system that uses hashed page tables, if two distinct virtual addresses V1 and V2 map to the same value while hashing, then the memory access time of these addresses will not be the same.

GATE CSE 2022

Numerical

-0.33

Consider a demand paging system with four page frames (initially empty) and LRU page replacement policy. For the following page reference string

7, 2, 7, 3, 2, 5, 3, 4, 6, 7, 7, 1, 5, 6, 1

the page fault rate, defined as the ratio of number of page faults to the number of memory accesses (rounded off to one decimal place) is _____________.

Your input ____