Recent questions tagged paging / GATE Overflow for GATE CSE

6 votes

1 answer

61

GATE Overflow Test Series | Mock GATE | Test 1 | Question: 22
Let the page fault service time be $25$ milliseconds(ms) in a computer with average memory access time being $40$ nanoseconds (ns). If one page fault is generated every $100,000$ memory accesses, the effective access time in nanoseconds for memory is _______

Let the page fault service time be $25$ milliseconds(ms) in a computer with average memory access time being $40$ nanoseconds (ns). If one page fault is generated every $...

gatecse

737 views

gatecse asked Jan 3, 2021

7 votes

1 answer

62

GATE Overflow Test Series | Mock GATE | Test 1 | Question: 23
With $\text{64 bit}$ virtual addresses, a $\text{4 KB}$ page and $\text{16 GB}$ of RAM, an inverted page table requires ______ $2$ million entries $4$ million entries $512$ thousand entries $1$ million entries

With $\text{64 bit}$ virtual addresses, a $\text{4 KB}$ page and $\text{16 GB}$ of RAM, an inverted page table requires ______$2$ million entries$4$ million entries$512$ ...

gatecse

519 views

gatecse asked Jan 3, 2021

2 votes

1 answer

63

GATE Overflow Test Series | Operating Systems | Test 2 | Question: 8
Which of the following is/are correct? (Mark all the appropriate choices) Paging avoids external fragmentation Paging avoids internal fragmentation Segmentation avoids external fragmentation Segmentation avoids internal fragmentation

Which of the following is/are correct? (Mark all the appropriate choices)Paging avoids external fragmentationPaging avoids internal fragmentationSegmentation avoids exter...

gatecse

207 views

gatecse asked Dec 7, 2020

2 votes

1 answer

64

GATE Overflow Test Series | Operating Systems | Test 2 | Question: 15
Consider a machine with $8\; GB$ physical memory and a $34$-bit virtual address space. If the page size s $4\; KB,$ the approximate size of the page table assuming $3$ auxiliary bits (for protection, page replacement information etc.) on ... table entry will be _______ $\text{16 MB}$ $\text{8 MB}$ $\text{2 MB}$ $\text{12 MB}$

Consider a machine with $8\; GB$ physical memory and a $34$-bit virtual address space. If the page size s $4\; KB,$ the approximate size of the page table assuming $3$ au...

gatecse

185 views

gatecse asked Dec 7, 2020

2 votes

1 answer

65

GATE Overflow Test Series | Operating Systems | Test 2 | Question: 16
In a virtual memory system, size of the virtual address is $\text{64-bit}$, size of the physical address is $\text{60-bit},$ page size is $4\;\text{Kbyte}$ ... . The maximum number of bits that can be used for storing protection and other information in each page table entry is _______

In a virtual memory system, size of the virtual address is $\text{64-bit}$, size of the physical address is $\text{60-bit},$ page size is $4\;\text{Kbyte}$ and size of ea...

gatecse

158 views

gatecse asked Dec 7, 2020

2 votes

1 answer

66

GATE Overflow Test Series | Operating Systems | Test 2 | Question: 17
Consider a system with byte-addressable memory, $\text{31-bit}$ logical addresses, $4\;\text{kilobyte}$ page size and page table entries of $8\;\text{bytes}$ each. The size of the page table in the system in $\text{megabytes}$ is ________

Consider a system with byte-addressable memory, $\text{31-bit}$ logical addresses, $4\;\text{kilobyte}$ page size and page table entries of $8\;\text{bytes}$ each. The si...

gatecse

113 views

gatecse asked Dec 7, 2020

2 votes

1 answer

67

GATE Overflow Test Series | Operating Systems | Test 2 | Question: 18
A computer system implements huge pages of $1\;\text{megabyte}$ and a $\text{64-bit}$ physical address space. Each page table entry contains a valid bit, a dirty bit, two permission bits, and the translation. If ... process is $48\;\text{megabytes}$, the length of the virtual address supported by the system in bits is _________

A computer system implements huge pages of $1\;\text{megabyte}$ and a $\text{64-bit}$ physical address space. Each page table entry contains a valid bit, a dirty bit, two...

gatecse

237 views

gatecse asked Dec 7, 2020

8 votes

2 answers

68

GATE Overflow Test Series | Operating Systems | Test 2 | Question: 19
A computer uses $\text{42-bit}$ virtual address, $\text{32-bit}$ physical address, and a three-level paged page table organization. The page table base register stores the base address of the first-level table $(T_1)$, which occupies ... is $\text{32 bits}$ in size. The size of a page in $\text{KB}$ in this computer is ________

A computer uses $\text{42-bit}$ virtual address, $\text{32-bit}$ physical address, and a three–level paged page table organization. The page table base register stores ...

gatecse

357 views

gatecse asked Dec 7, 2020

4 votes

1 answer

69

GATE Overflow Test Series | Operating Systems | Test 2 | Question: 20
If the virtual address space supported is $2^{64}\:\text{bits},$ the page size is $4\:\text{Kbyte,}$ the size of the physical memory is $2\:\text{GB,}$ the size of a PTE is four bytes for standard page table and eight bytes for inverted ... $2^{51}\;\text{bytes},\;2^{22}\;\text{bytes}$ $2^{50}\;\text{bytes},\;256\;\text{bytes}$

If the virtual address space supported is $2^{64}\:\text{bits},$ the page size is $4\:\text{Kbyte,}$ the size of the physical memory is $2\:\text{GB,}$ the size of a PTE ...

gatecse

388 views

gatecse asked Dec 7, 2020

4 votes

1 answer

70

GATE Overflow Test Series | Operating Systems | Test 2 | Question: 30
A computer uses $\text{48-bit}$ virtual address, $\text{32-bit}$ physical address, and a three-level paged page table organization with page size being $16\:\text{KB}.$ The processor used in the computer ... colours needed to guarantee that no two synonyms map to different sets in the processor cache of this computer is _________

A computer uses $\text{48-bit}$ virtual address, $\text{32-bit}$ physical address, and a three-level paged page table organization with page size being $16\:\text{KB}.$ T...

gatecse

570 views

gatecse asked Dec 7, 2020

2 votes

4 answers

71

NIELIT 2017 DEC Scientific Assistant A - Section B: 9
Operating System maintains the page table for : each process each thread each instruction each address

Operating System maintains the page table for :each processeach threadeach instructioneach address

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