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Recent questions tagged virtual-memory
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1
memory management
we have 8 pages (each side 32B) to store in physical memory of 2^32 bits how many bits are required to identify each page , according to me 3 bits are required but that is wrong plz explain why
SSR17
asked
in
Operating System
Feb 9
by
SSR17
171
views
memory-management
operating-system
paging
virtual-memory
5
votes
1
answer
2
GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 21
Consider a virtual memory system that uses paging. Virtual and physical addresses are both $32$ bits long, and the page size is $4 \textsf{KB}=2^{12}$ bytes. A process $\text{P}_1$ has the following page table. ... $\textsf{0x00003b65}$ $\textsf{0x00875b65}$ $\textsf{0x00875}$ Translation is not possible as per the given page table
GO Classes
asked
in
Operating System
Jan 28
by
GO Classes
334
views
goclasses2024-mockgate-13
goclasses
operating-system
paging
virtual-memory
1-mark
4
votes
1
answer
3
GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 9
Consider a system with $4 \mathrm{~GB}$ of physical memory and $64 \mathrm{~GB}$ of Virtual Memory. The page size is $4 \mathrm{~KB}$. Recall that the page table is stored in physical memory and consists of PTEs (page ... each page could store $2048$ PTEs. How many pages does our page table occupy if we have a single-level page table?
GO Classes
asked
in
Operating System
Jan 21
by
GO Classes
585
views
goclasses2024-mockgate-12
goclasses
numerical-answers
operating-system
virtual-memory
paging
1-mark
0
votes
1
answer
4
Can anyone explain , in the concept of segmentation . let the base address of a particular segment is 1900 and the limit of the segment is 400(i.e., size limit). Exactly what does it represent at the address 1900. Is it a page or group of pages or words
Unique_999
asked
in
Operating System
Sep 4, 2023
by
Unique_999
254
views
segmentation
operating-system
virtual-memory
paging
0
votes
1
answer
5
OS
By default the memory address starts with 0. But they have considered from 1. What should I consider when nothing is mentioned?
DAWID15
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in
Operating System
Jan 22, 2023
by
DAWID15
452
views
operating-system
virtual-memory
made-easy-test-series
0
votes
0
answers
6
Gate 2015
For problems where the options are not given, like this kinda questions should I consider hierarchical access or simultaneous access. I know that hierarchical access is commonly used so it should be preferred but the solution for this is described using simultaneous access.
DAWID15
asked
in
CO and Architecture
Jan 3, 2023
by
DAWID15
342
views
virtual-memory
numerical-answers
2
votes
1
answer
7
No of page levels involved?
๏ปฟConsider a virtual memory system where, physical memory = 4GB page size = 4KB, page table entry size = 4B and 45-bit virtual address. Assume every page table exactly fits into a single page. If page table entry size is 4B then how many levels of page tables would be required.
h4kr
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in
Operating System
Jan 2, 2023
by
h4kr
1.5k
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operating-system
virtual-memory
0
votes
1
answer
8
Operating System
What is the relationship between paging and virtual memory? A Virtual memory came before paging B When pages are created in disks, it is called a virtual memory? C Virtual memory can never be implemented without paging D Both have the same concepts
rayhanrjt
asked
in
Operating System
Dec 29, 2022
by
rayhanrjt
380
views
operating-system
virtual-memory
paging
2
votes
1
answer
9
What is the solution?
I think the answer must be 500200ns
h4kr
asked
in
Operating System
Dec 29, 2022
by
h4kr
301
views
operating-system
virtual-memory
probability
effective-memory-access
made-easy-test-series
0
votes
2
answers
10
Arihant Gate Tutor
If a processor has 32-bit virtual address, 28-bit physical address, 2 kb pages. How many bits are required for the virtual, physical page number? 17, 21 21, 17 6, 10 None The answer given is b. 21, 17
arkaprava_gupta
asked
in
CO and Architecture
Dec 23, 2022
by
arkaprava_gupta
1.4k
views
co-and-architecture
virtual-memory
operating-system
registers
0
votes
3
answers
11
Arihant Gate Tutor
Memory mapping table is used to (a) Translate virtual address to physical address (b) Translate physical address to virtual address (c) Both (d) None
arkaprava_gupta
asked
in
CO and Architecture
Dec 23, 2022
by
arkaprava_gupta
482
views
operating-system
co-and-architecture
virtual-memory
0
votes
1
answer
12
Consider the following segment table: Segment Base Length 0 220 600 1 2300 20 2 90 100 3 1320 580 4 1960 90 a. Draw a memory allocation table: b. What are the physical addresses for the following logical addresses? i. 0, 430 ii. 1, 10 iii. 3, 80 iv. 2, 500
bamcikibambam
asked
in
Operating System
Dec 21, 2022
by
bamcikibambam
806
views
operating-system
virtual-memory
0
votes
1
answer
13
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
by
Souvik33
425
views
operating-system
memory-management
virtual-memory
paging
co-and-architecture
self-doubt
1
vote
1
answer
14
paging
Can anyone diagrammatically explain what is the difference between Page size vs Page table entry size in a page table?
Bishes
asked
in
Operating System
Dec 3, 2022
by
Bishes
929
views
paging
operating-system
virtual-memory
1
vote
2
answers
15
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
784
views
operating-system
memory-management
virtual-memory
2
votes
1
answer
16
With segmentation, if there are 64 segments and maximum segment size is 512 words; the length of logical address is how many bits a) 12 b) 6 c) 15 d) 9
Jeetmoni saikia
asked
in
Operating System
Oct 21, 2022
by
Jeetmoni saikia
1.5k
views
operating-system
virtual-memory
segmentation
1
vote
1
answer
17
Institute of Technology, GNCTD
If the average page-fault service time of 20 ๐s, a ๐AT of 80 ๐s and the probability of a page fault is 10 %. An effective access time will be: 2,000,672 ๐s 2,000,072 ๐s 2,000,036 ๐s 2,000,006 ๐s
rsansiya111
asked
in
Operating System
Feb 25, 2022
by
rsansiya111
273
views
virtual-memory
normal
1
vote
1
answer
18
Memory Management
In a virtual memory system, size of the virtual address is 32-bit, size of the physical address is 30-bit, page size is 4 KByte and size of each page table entry is 32-bit. The main memory is word addressable and word size is 4Bytes. Find the maximum number of bits that can be used for storing other information ?
Vidya Sagar
asked
in
Operating System
Jan 3, 2022
by
Vidya Sagar
1.1k
views
operating-system
memory-management
virtual-memory
paging
1
vote
1
answer
19
Applied Gate All India Mock Test 3 - 2022
Suppose we have virtual memory containing 8 pages with 512 bytes per page and physical memory with 16-page frames. Given the following page table ( where virtual page number gives page number and page frame number gives frame number ), the physical address( in decimal ) corresponding to the virtual address of page number 4, byte 241 is ______ .
Aadesh
asked
in
Operating System
Dec 19, 2021
by
Aadesh
1.2k
views
operating-system
test-series
virtual-memory
numerical-answers
0
votes
0
answers
20
https://www.cs.utexas.edu/~lorenzo/corsi/cs372/06F/hw/3sol.htmlย
https://www.cs.utexas.edu/~lorenzo/corsi/cs372/06F/hw/3sol.html Here, in problem 2: In solution, point number 2 should be: With 4-byte entries in the page table we can reference 2^34 pages. Since each page is 2^13 B long, the ... B (assuming no protection bits are used). REASON: 2^36/ 2^2 = 2^34, please correct me if I am wrong.
ankit3009
asked
in
Operating System
Dec 10, 2021
by
ankit3009
370
views
multilevel-paging
operating-system
virtual-memory
self-doubt
paging
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