Which of the following information not included in memory table? A) The allocation of main memory to process. B) The allocation of secondary memory to process C) Any information needed to manage virtual memory D) Any information about the existence of file

Which of the following information not included in memory table?
A) The allocation of main memory to process.
B) The allocation of secondary memory to process
C) Any information needed to manage virtual memory
D) Any information about the existence of file
by

1 Answer

Answer :

D) Any information about the existence of file
by

Related questions

Which of the following statements is not true about disk-arm scheduling algorithms ? (A) SSTF (shortest seek time first) algorithm increases performance of FCFS. (B) The number of requests for disk service are not influenced by file allocation method. (C) Caching the directories and index blocks in main memory can also help in reducing disk arm movements. (D) SCAN and C-SCAN algorithms are less likely to have a starvation problem.

Description : Which of the following statements is not true about disk-arm scheduling algorithms ? (A) SSTF (shortest seek time first) algorithm increases performance of FCFS. (B) The number of requests for disk ... arm movements. (D) SCAN and C-SCAN algorithms are less likely to have a starvation problem.

Last Answer : (B) The number of requests for disk service are not influenced by file allocation method.

.................. is a facility that allows programmers to address memory from a logical point of view, without regard to the main memory, physically available. A) Visual memory B) Real memory C) Virtual memory D) Secondary memory

Description : .................. is a facility that allows programmers to address memory from a logical point of view, without regard to the main memory, physically available. A) Visual memory B) Real memory C) Virtual memory D) Secondary memory

Last Answer : C) Virtual memory

................. maintains the list of free disk blocks in the Unix file system. (A) I-node (B) Boot block (C) Super block (D) File allocation table

Description : ................. maintains the list of free disk blocks in the Unix file system. (A) I-node (B) Boot block (C) Super block (D) File allocation table

Last Answer : (C) Super block 

A process that execute only in main memory is referred to as ……………… and that allocated in disk is referred to a ……………. A) virtual memory, true memory B) virtual memory, real memory C) real memory, virtual memory D) imaginary memory, real memory

Description : A process that execute only in main memory is referred to as ……………… and that allocated in disk is referred to a ……………. A) virtual memory, true memory B) virtual memory, real memory C) real memory, virtual memory D) imaginary memory, real memory

Last Answer : C) real memory, virtual memory

What is the most appropriate function of Memory Management Unit (MMU) ? (A) It is an associative memory to store TLB (B) It is a technique of supporting multiprogramming by creating dynamic partitions (C) It is a chip to map virtual address to physical address (D) It is an algorithm to allocate and deallocate main memory to a process

Description : What is the most appropriate function of Memory Management Unit (MMU) ? (A) It is an associative memory to store TLB (B) It is a technique of supporting multiprogramming by creating dynamic partitions ... to physical address (D) It is an algorithm to allocate and deallocate main memory to a process 

Last Answer : (C) It is a chip to map virtual address to physical address

A thread is usually defined as a light weight process because an Operating System (OS) maintains smaller data structure for a thread than for a process. In relation to this, which of the following statement is correct? (A) OS maintains only scheduling and accounting information for each thread. (B) OS maintains only CPU registers for each thread. (C) OS does not maintain a separate stack for each thread. (D) OS does not maintain virtual memory state for each thread.

Description : A thread is usually defined as a light weight process because an Operating System (OS) maintains smaller data structure for a thread than for a process. In relation to this, which of the following ... separate stack for each thread. (D) OS does not maintain virtual memory state for each thread.

Last Answer : (B) OS maintains only CPU registers for each thread.

A virtual memory has a page size of 1K words. There are eight pages and four blocks. The associative memory page table contains the following entries: Image Which of the following list of virtual addresses (in decimal) will not cause any page fault if referenced by the CPU? (A) 1024, 3072, 4096, 6144 (B) 1234, 4012, 5000, 6200 (C) 1020, 3012, 6120, 8100 (D) 2021, 4050, 5112, 7100

Description : A virtual memory has a page size of 1K words. There are eight pages and four blocks. The associative memory page table contains the following entries:  Which of the following list of virtual addresses (in ... 1234, 4012, 5000, 6200 (C) 1020, 3012, 6120, 8100 (D) 2021, 4050, 5112, 7100

Last Answer : Answer: C Explanation: The pages which are not in main memory are: 1020 will not cause page fault (1024-2047) 3012 will not cause page fault (3072-4095) 6120 will not cause page fault (4096-5119) 8100 will not cause page fault (6144-7167)

In ............ allocation method for disk block allocation in a file system, insertion and deletion of blocks in a file is easy. (A) Index (B) Linked (C) Contiguous (D) Bit Map

Description : In ............ allocation method for disk block allocation in a file system, insertion and deletion of blocks in a file is easy. (A) Index (B) Linked (C) Contiguous (D) Bit Map

Last Answer : (B) Linked

Function of memory management unit is : (A) Address translation (B) Memory allocation (C) Cache management (D) All of the above

Description : Function of memory management unit is : (A) Address translation (B) Memory allocation (C) Cache management (D) All of the above

Last Answer : Answer: A

The Unix Kernel maintains two key data structures related to processes, the process table and the user structure. Which of following information is not the part of user structure? (A) File descriptor table (B) System call state (C) Scheduling parameters (D) Kernel stack

Description : The Unix Kernel maintains two key data structures related to processes, the process table and the user structure. Which of following information is not the part of user structure? (A) File descriptor table (B) System call state (C) Scheduling parameters (D) Kernel stack

Last Answer : (C) Scheduling parameters

A virtual memory based memory management algorithm partially swaps out a process. This is an example of (A) short term scheduling (B) long term scheduling (C) medium term scheduling (D) mutual exclusion

Description : A virtual memory based memory management algorithm partially swaps out a process. This is an example of (A) short term scheduling (B) long term scheduling (C) medium term scheduling (D) mutual exclusion

Last Answer : (C) medium term scheduling

Which of the following is incorrect for virtual memory? (1) Large programs can be written (2) More I/O is required (3) More addressable memory available (4) Faster and easy swapping of process

Description : Which of the following is incorrect for virtual memory? (1) Large programs can be written (2) More I/O is required (3) More addressable memory available (4) Faster and easy swapping of process

Last Answer : Answer: 2

Suppose there are four processes in execution with 12 instances of a Resource R in a system. The maximum need of each process and current allocation are given below: Image With reference to current allocation, is system safe? If so, what is the safe sequence? (A) No (B) Yes, P1 P2 P3 P4 (C) Yes, P4 P3 P1 P2 (D) Yes, P2 P1 P3 P4

Description : Suppose there are four processes in execution with 12 instances of a Resource R in a system. The maximum need of each process and current allocation are given below: With reference to current allocation, is system safe? If so, ... B) Yes, P1 P2 P3 P4 (C) Yes, P4 P3 P1 P2 (D) Yes, P2 P1 P3 P4

Last Answer : (C) Yes, P4 P3 P1 P2

Point out the wrong statement. a) Virtual appliances are becoming a very important standard cloud computing deployment object b) Cloud computing requires some standard protocols c) Cloud computing relies on a set of protocols needed to manage interprocess communications d) None of the mentioned

Description : Point out the wrong statement. a) Virtual appliances are becoming a very important standard cloud computing deployment object b) Cloud computing requires some standard protocols c) Cloud computing relies on a set of protocols needed to manage interprocess communications d) None of the mentioned

Last Answer : None of the mentioned

Which of the following is an application layer service? A) Network virtual terminal B) File transfer, access and management C) Mail service D) All of the above

Description : Which of the following is an application layer service? A) Network virtual terminal B) File transfer, access and management C) Mail service D) All of the above

Last Answer : C) Mail service

The two basic types of memory in a computer are ________ a) Primary and major b) Primary and Secondary c) Minor and Major d) Main and virtual

Description : The two basic types of memory in a computer are ________ a) Primary and major b) Primary and Secondary c) Minor and Major d) Main and virtual

Last Answer : Answer: b Explanation: There are two types of memories in a computer system: The Primary Memory and the Secondary Memory. The primary memory can be directly accessed by the CPU whereas the secondary memory cannot be directly accessed

Virtual memory is _________ A. an extremely large main memory B. an extremely large secondary memory C. a type of used in super computers D. an illusion of extremely large main memory

Description : Virtual memory is _________ A. an extremely large main memory B. an extremely large secondary memory C. a type of used in super computers D. an illusion of extremely large main memory

Last Answer : D. an illusion of extremely large main memory

Virtual Memory is: a) An extremely large main memory b) An extremely large secondary memory. c) An illusion of an extremely large memory. d) None of The Above

Description : Virtual Memory is: a) An extremely large main memory b) An extremely large secondary memory. c) An illusion of an extremely large memory. d) None of The Above

Last Answer : c) An illusion of an extremely large memory.

Virtual memory is (A) an extremely large main memory. (B) an extremely large secondary memory. (C) an illusion of extremely large main memory (D) a type of memory used in super computers.

Description : Virtual memory is (A) an extremely large main memory. (B) an extremely large secondary memory. (C) an illusion of extremely large main memory (D) a type of memory used in super computers.

Last Answer : (C) an illusion of extremely large main memory

The virtual address generated by a CPU is 32 bits. The Translation Lookaside Buffer (TLB) can hold total 64 page table entries and a 4-way set associative (i.e. with 4- cache lines in the set). The page size is 4 KB. The minimum size of TLB tag is (A) 12 bits (B) 15 bits (C) 16 bits (D) 20 bits

Description : The virtual address generated by a CPU is 32 bits. The Translation Lookaside Buffer (TLB) can hold total 64 page table entries and a 4-way set associative (i.e. with 4- cache lines in the set). The page size is 4 KB. The minimum size of TLB tag is (A) 12 bits (B) 15 bits (C) 16 bits (D) 20 bits

Last Answer : (C) 16 bits Explanation: VirtualAddress = 32 bits PageSize = 4KB = 12 bits therefore : VPNTag = 20 bits, OffsetTag = 12 bits TLBEntryLength = VPNTag = 20 bits TotalTLBEntries = 64, 4-way implies ... therefore : TLBIndex = 4 bits TLBTag = TLBEntryLength - TLBIndex = 20 - 4 = 16 bits

The different types of tables maintained by the operating system are ............. A) memory, logical , I/O file B) memory, I/O, file, physical C) memory, I/O, file, process D) memory, logical, I/O, physical

Description : The different types of tables maintained by the operating system are ............. A) memory, logical , I/O file B) memory, I/O, file, physical C) memory, I/O, file, process D) memory, logical, I/O, physical

Last Answer : C) memory, I/O, file, process

Which of the following is not the function of Microkernel? A) File management B) Low-level memory management C) Inter-process communication D) I/O interrupts management

Description : Which of the following is not the function of Microkernel? A) File management B) Low-level memory management C) Inter-process communication D) I/O interrupts management

Last Answer : A) File management

The ability to find an individual item in a file immediately _____ is used. 1) File allocation table 2) Directory 3) Sequential access 4) Direct access 4 5) None of these

Description : The ability to find an individual item in a file immediately _____ is used. 1) File allocation table 2) Directory 3) Sequential access 4) Direct access 4 5) None of these

Last Answer : Answer :1

The ability to find an individual item in a file immediately _____ is used: a) file allocation table b) directory c) sequential access d) direct access e) None of The Above

Description : The ability to find an individual item in a file immediately _____ is used: a) file allocation table b) directory c) sequential access d) direct access e) None of The Above

Last Answer : a) file allocation table

FAT stands for 1) File Accomdation Table 2) File Access Tape 3) File Allocation Table 4) File Activity Table

Description : FAT stands for 1) File Accomdation Table 2) File Access Tape 3) File Allocation Table 4) File Activity Table

Last Answer : 3) File Allocation Table

FAT stands for 1 File Accomdation Table 2 File Access Tape 3 File Allocation Table 4 File Activity Table

Description : FAT stands for 1 File Accomdation Table 2 File Access Tape 3 File Allocation Table 4 File Activity Table

Last Answer : 3 File Allocation Table

..................... provides a larger sized of virtual memory but require virtual memory which provides multidimensional memory. A) Paging method B) Segmentation method C) Paging and segmentation method D) None of these

Description : ..................... provides a larger sized of virtual memory but require virtual memory which provides multidimensional memory. A) Paging method B) Segmentation method C) Paging and segmentation method D) None of these

Last Answer : B) Segmentation method

A part of Windows 2000 operating system that is not portable is (A) Device Management (B) Virtual Memory Management (C) Processor Management (D) User Interface

Description : A part of Windows 2000 operating system that is not portable is (A) Device Management (B) Virtual Memory Management (C) Processor Management (D) User Interface

Last Answer : (B) Virtual Memory Management

Suppose that the virtual Address space has eight pages and physical memory with four page frames. If LRU page replacement algorithm is used, .............. number of page faults occur with the reference string. 0 2 1 3 5 4 6 3 7 4 7 3 3 5 5 3 1 1 1 7 2 3 4 1 (A) 11 (B) 12 (C) 10 (D) 9

Description : Suppose that the virtual Address space has eight pages and physical memory with four page frames. If LRU page replacement algorithm is used, .............. number of page faults occur with the reference string. 0 2 1 3 5 4 6 3 7 4 7 3 3 5 5 3 1 1 1 7 2 3 4 1 (A) 11 (B) 12 (C) 10 (D) 9

Last Answer : (A) 11

Which of the following is not a mechanism that DHCP supports for IP address allocation? A) Automatic allocation B) Static allocation C) Dynamic allocation D) Manual allocation

Description : Which of the following is not a mechanism that DHCP supports for IP address allocation? A) Automatic allocation B) Static allocation C) Dynamic allocation D) Manual allocation

Last Answer : B) Static allocation

Which of the following is not a mechanism that DHCP supports for IP address allocation? A) Automatic allocation B) Static allocation C) Dynamic allocation D) Manual allocation

Description : Which of the following is not a mechanism that DHCP supports for IP address allocation? A) Automatic allocation B) Static allocation C) Dynamic allocation D) Manual allocation

Last Answer : A) Automatic allocation

C++ actually supports the following two complete dynamic allocation systems: (A) One defined by C++ and the other not defined by C. (B) One defined by C and one specific to C++. (C) Both are specific to C++ (D) Both of them are improvements of C.

Description : C++ actually supports the following two complete dynamic allocation systems: (A) One defined by C++ and the other not defined by C. (B) One defined by C and one specific to C++. (C) Both are specific to C++ (D) Both of them are improvements of C.

Last Answer : (B) One defined by C and one specific to C++. 

In 3G network, W-CDMA is also known as UMTS. The minimum spectrum allocation required for W-CDMA is .......... (1) 2 MHz (2) 20 KHz (3) 5 KHz (4) 5 MHz

Description : In 3G network, W-CDMA is also known as UMTS. The minimum spectrum allocation required for W-CDMA is .......... (1) 2 MHz (2) 20 KHz (3) 5 KHz (4) 5 MHz

Last Answer : Answer: 4

File management function of the operating system includes i) File creation and deletion ii) Disk scheduling iii) Directory creation iv) Mapping file in secondary storage. A) i, ii and iii only B) i, iii and iv only C) ii, iii and iv only D) All i, ii, iii and iv

Description : File management function of the operating system includes i) File creation and deletion ii) Disk scheduling iii) Directory creation iv) Mapping file in secondary storage. A) i, ii and iii only B) i, iii and iv only C) ii, iii and iv only D) All i, ii, iii and iv

Last Answer : B) i, iii and iv only

Consumer's sovereignty means: (1) consumers are free to spend their income as they like. (2) consumers have the power to manage the economy. (3) consumer's expenditures influence the allocation of resources. (4) consumer goods are free from government control,

Description : Consumer's sovereignty means: (1) consumers are free to spend their income as they like. (2) consumers have the power to manage the economy. (3) consumer's expenditures influence the allocation of resources. (4) consumer goods are free from government control,

Last Answer : (1) consumers are free to spend their income as they like. Explanation: Consumer sovereignty means that buyers ultimately determine which goods and services remain in production. In unrestricted markets, ... to motivate producers. So ultimately it means how the consumers want to spend their incomes.

With …………………. A page is written out to secondary memory only when it has been selected for replacement. A) pre-cleaning B) demand cleaning C) required cleaning D) fast cleaning

Description : With …………………. A page is written out to secondary memory only when it has been selected for replacement. A) pre-cleaning B) demand cleaning C) required cleaning D) fast cleaning

Last Answer : B) demand cleaning

Consider the following statements: (a) Revised simplex method requires lesser computations than the simplex method. (b) Revised simplex method automatically generates the inverse of the current basis matrix. (c) Less number of entries are needed in each table of revised simplex method than usual simplex method. Which of these statements are correct? (A) (a) and (b) only (B) (a) and (c) only (C) (b) and (c) only (D) (a), (b) and (c)

Description : Consider the following statements: (a) Revised simplex method requires lesser computations than the simplex method. (b) Revised simplex method automatically generates the inverse of the current basis matrix. (c) Less number of entries are needed ... c) only (C) (b) and (c) only (D) (a), (b) and (c)

Last Answer : (D) (a), (b) and (c)

A specific editor has 200 K of program text, 15 K of initial stack, 50 K of initialized data, and 70 K of bootstrap code. If five editors are started simultaneously, how much physical memory is needed if shared text is used ? (A) 1135 K (B) 335 K (C) 1065 K (D) 320 K

Description : A specific editor has 200 K of program text, 15 K of initial stack, 50 K of initialized data, and 70 K of bootstrap code. If five editors are started simultaneously, how much physical memory is needed if shared text is used ? (A) 1135 K (B) 335 K (C) 1065 K (D) 320 K

Last Answer : (B) 335 K

What would happen if "String[]args" is not included as argument in the main method. A) No error B) Compilation error C) Program won't run D) Program exit

Description : What would happen if "String[]args" is not included as argument in the main method. A) No error B) Compilation error C) Program won't run D) Program exit

Last Answer : C) Program won't run

What is the output of the following program ? (Assume that the appropriate pre-processor directives are included and there is no syntax error) main() { char S[ ] = "ABCDEFGH"; printf ("%C",* (& S[3])); printf ("%s", S+4); printf ("%u", S); /* Base address of S is 1000 */ } (A) ABCDEFGH1000 (B) CDEFGH1000 (C) DDEFGHH1000 (D) DEFGH1000

Description : What is the output of the following program ? (Assume that the appropriate pre-processor directives are included and there is no syntax error) main() { char S[ ] = "ABCDEFGH"; printf ("%C",* (& ... Base address of S is 1000 */ } (A) ABCDEFGH1000 (B) CDEFGH1000 (C) DDEFGHH1000 (D) DEFGH1000

Last Answer : (D) DEFGH1000

In Unix operating system, special files are used to : (A) buffer data received in its input from where a process reads (B) provide a mechanism to map physical device to file names (C) store list of file names plus pointers associated with i-nodes (D) store information entered by a user application program or utility program

Description : In Unix operating system, special files are used to : (A) buffer data received in its input from where a process reads (B) provide a mechanism to map physical device to file names (C ... pointers associated with i-nodes (D) store information entered by a user application program or utility program

Last Answer : (B) provide a mechanism to map physical device to file names 

A job has four pages A, B, C, D and the main memory has two page frames only. The job needs to process its pages in following order: ABACABDBACD Assuming that a page interrupt occurs when a new page is brought in the main memory, irrespective of whether the page is swapped out or not. The number of page interrupts in FIFO and LRU page replacement algorithms are (A) 9 and 7 (B) 7 and 6 (C) 9 and 8 (D) 8 and 6

Description : A job has four pages A, B, C, D and the main memory has two page frames only. The job needs to process its pages in following order: ABACABDBACD Assuming that a page interrupt occurs when a new page is brought in the main ... replacement algorithms are (A) 9 and 7 (B) 7 and 6 (C) 9 and 8 (D) 8 and 6

Last Answer : (C) 9 and 8

A data file of 1,00,000 characters contains only the characters g-l, with the frequencies as indicated in table: using the variable-length code by Huffman codes, the file can be encoded with (A) 2,52,000 bits (B) 2,64,000 bits (C) 2,46,000 bits (D) 2,24,000 bits

Description : A data file of 1,00,000 characters contains only the characters g-l, with the frequencies as indicated in table:  using the variable-length code by Huffman codes, the file can be encoded with (A) 2,52,000 bits (B) 2,64,000 bits (C) 2,46,000 bits (D) 2,24,000 bits

Last Answer : (D) 2,24,000 bits 

........... is a large kernel, including scheduling file system, networking, device drivers, memory management and more. A) Monolithic kernel B) Micro kernel C) Macro kernel D) Mini kernel

Description : ........... is a large kernel, including scheduling file system, networking, device drivers, memory management and more. A) Monolithic kernel B) Micro kernel C) Macro kernel D) Mini kernel

Last Answer : A) Monolithic kernel

........... is a large kernel containing virtually the complete operating system, including, scheduling, file system, device drivers and memory management. A) Multilithic kernel B) Monolithic kernel C) Micro kernel D) Macro kernel

Description : ........... is a large kernel containing virtually the complete operating system, including, scheduling, file system, device drivers and memory management. A) Multilithic kernel B) Monolithic kernel C) Micro kernel D) Macro kernel

Last Answer : B) Monolithic kernel

The distributed system is a collection of (P) and communication is achieved in distributed system by (Q) , where (P) and (Q) are : (A) Loosely coupled hardware on tightly coupled software and disk sharing, respectively. (B) Tightly coupled hardware on loosely coupled software and shared memory, respectively. (C) Tightly coupled software on loosely coupled hardware and message passing ,respectively. (D) Loosely coupled software on tightly coupled hardware and file sharing, respectively.

Description : The distributed system is a collection of (P) and communication is achieved in distributed system by (Q) , where (P) and (Q) are : (A) Loosely coupled hardware on tightly ... message passing ,respectively. (D) Loosely coupled software on tightly coupled hardware and file sharing, respectively.

Last Answer : (C) Tightly coupled software on loosely coupled hardware and message passing ,respectively. 

What is the reason for using virtual machine templates? A. Efficiency. B. Scalability. C. Storage. D. Dynamic Allocation.

Description : What is the reason for using virtual machine templates? A. Efficiency. B. Scalability. C. Storage. D. Dynamic Allocation.

Last Answer : Efficiency.

In a demand paging memory system, page table is held in registers. The time taken to service a page fault is 8 m.sec. if an empty frame is available or if the replaced page is not modified, and it takes 20 m.secs., if the replaced page is modified. What is the average access time to service a page fault assuming that the page to be replaced is modified 70% of the time ? (A) 11.6 m.sec. (B) 16.4 m.sec. (C) 28 m.sec. (D) 14 m.sec.

Description : In a demand paging memory system, page table is held in registers. The time taken to service a page fault is 8 m.sec. if an empty frame is available or if the replaced page is not modified, and it takes 20 m.secs., if the replaced ... ? (A) 11.6 m.sec. (B) 16.4 m.sec. (C) 28 m.sec. (D) 14 m.sec.

Last Answer : (B) 16.4 m.sec.