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Recent questions tagged memory-management

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coa question
Interpret the main memory addresses FF010,12364,andC7691 considering direct, associative and 2 way set associative mapping if the main memory size is 1MB,word size is 16 bytes, and cache size is 64KB.

1234hello asked in CO and Architecture Mar 11

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Made Easy Test Series | Prog. and DS | Dynamic Memory Allocation | Malloc
Which line number contains an error or warning:

Souvik33 asked in Programming Jan 9

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2 answers

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Applied test series
We know that the paging scheme suffers from internal fragmentation. S1 : If the CPU attempts to access the unused portion of the last page, the valid/invalid bits will block such accesses. S2 : A possible solution to handle the internal fragmentation issue is to use multiple page sizes. can anyone plz explain me this ? we have to select from s1 and s2 which is correct

shikhar500 asked in Operating System Jan 8

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4

Madeeasy workbook, chapter: Memory management
Consider a k-level paging system along with a TLB. A TLB takes 10ns, and a memory takes 100ns on average. The hit ratio of TLB is equal to 0.8. If it is known that the average memory access time is 70ns, then the value of k is?

Gaurav Padole asked in Operating System Dec 29, 2022

by Gaurav Padole

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1 answer

5

Self Doubt | Logical Address | Virtual Address | Virtual Memory
Can anyone explain how are these two things connected (i) Virtual Memory (part of HDD, acting as RAM) and (ii) Virtual Address Space (Logical Address, generated by CPU during compilation), and where exactly is this Logical Address stored?

Souvik33 asked in Others Dec 12, 2022

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2 votes

1 answer

6

Ace academy handout
Please solve and explain this question, like explaining to a 2nd-grade student. Answer is 128 KB, for verification.

joleyasarthak asked in Operating System Dec 4, 2022

by joleyasarthak

153 views

2 votes

1 answer

7

Logical and Physical Address Generation | OS
MSQ Consider execution of the following C code for different cases: printf( %d ,&a); Consider the following statements. Which among these are TRUE: Will print Logical Address in case of Local Variables, as they are static ... runtime, like malloc() Will print Logical Address in case of variables Dynamically allocated during the runtime, like malloc()

Souvik33 asked in Operating System Dec 3, 2022

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1 vote

2 answers

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OS Self doubt Memory management
Suppose that a machine has 42-bit virtual addresses and 32-bit physical addresses. {a} How much RAM can the machine support (each byte of RAM must be addressable)? {b} What is the largest virtual address space that can be supported for a process? ... each second-level page table? {f} What is the advantage of using a two-level page table over single-level page table?

legacy asked in Operating System Nov 27, 2022

by legacy

163 views

1 vote

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A digital computer has a common path for a memory and 3 registers of 8 bits each.. How many registers can load data. from the path in the same clock cycle? a) 8 b) 2 d) 4

ahmed_ asked in CO and Architecture Nov 21, 2022

by ahmed_

111 views

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10

OS Memory management
Suppose your computer has 512MB of memory. The loaded size of the operating system is 128MB. Now you have 100 programs to run and each of them would take 128MB memory. With an average 70% of I/O wait, what is the current CPU utilization? Minimum, how many of 512MB blocks of memory will you add to your computer to have the CPU utilization just exceeding 98%?

legacy asked in Operating System Oct 24, 2022

by legacy

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Amit Mehta asked in Operating System Oct 22, 2022

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Recent questions tagged memory-management