Description : Let the page fault service time be 10 millisecond(ms) in a computer with average memory access time being 20 nanosecond(ns). If one page fault is generated for every 106 memory accesses, what is the effective access time for memory? (A) 21 ns (B) 23 ns (C) 30 ns (D) 35 ns
Last Answer : (C) 30 ns
Description : Suppose that the number of instructions executed between page faults is directly proportional to the number of page frames allocated to a program. If the available memory is doubled, the mean interval between page faults is also ... memory were available? (A) 60 sec (B) 30 sec (C) 45 sec (D) 10 sec
Last Answer : Answer: C Explanation: T = Ninstr x 1µs + 15,000 x 2,000 µs = 60s Ninstr x 1µs = 60,000,000 µs - 30,000,000 µs = 30,000,000 µs Ninstr = 30,000,000 The number of instruction ... doesn't mean that the program runs twice as fast as on the first system. Here, the performance increase is of 25%.
Description : Bill accesses Waterstone’s home page on the world wide web and orders a copy of the latest best selling business book. This is an example of: A)catalogue retailing. B)direct -response retailing. C)online retailing. D)home shopping. E)in -home retailing.
Last Answer : C)online retailing.
Description : emaphore provides mutual exclusion for accesses to the buffer pool and is initialized to the value: a. Mutex b. Mutual Cc. Memory d. __ Allof these
Last Answer : Mutex
Description : How do I copy all my settings and most program accesses from an admin account to a power-user account?
Last Answer : answer:I haven't tried this exact scenario, but my first idea would be the Files and Settings Transfer Wizard. Being new to the task, I would highly recommend giving it a try. At the worst, ... How to use the Files and Settings Transfer Wizard in Windows XP http://support.microsoft.com/kb/293118
Description : The register which keeps track of the execution of a program and which contains the memory address of the instruction currently being executed is known as: a) Index Register b) Memory Address Register c) Program Counter d) None of The Above
Last Answer : c) Program Counter
Description : The part of the CPU that accesses and decodes programme instructions, and coordinates the flow of data among various system components is the a) ALU b) Control unit c) Megabertz d) Motherboard e) None of these
Last Answer : b) Control unit
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.
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)
Description : If a program in its functioning has not met user requirements is some way, then it is (A) an error. (B) a failure. (C) a fault. (D) a defect.
Last Answer : (D) a defect.
Description : A Page Fault occurs: a) When the Page is not in Memory b) When the Page is in the Memory c) When the process is in the ready state d) None of The Above
Last Answer : a) When the Page is not in Memory
Description : What is true about SSO? A. SSO has multiple authentication server B. SSO managing single accesses to other systems C. In SSO, User sends the ticket to intranet server. D. All of the above
Last Answer : In SSO, User sends the ticket to intranet server.
Description : _____ has single authentication server, managing multiple accesses to other systems A. SSO B. IDaaS C. SOAP D. SOA
Last Answer : SSO
Description : Proxy application gateway (i) acts on behalf of all intranet users wanting to access interne securely (ii)monitors all accesses to internet and allows access to only specified IP addresses (iii) disallows use of certain protocols with ... ii b. i, ii, iii c. i, ii, iii, iv d. ii, iii, iv
Last Answer : b. i, ii, iii
Description : A firewall is a a. wall built to prevent fires from damaging a corporate intranet b. security device deployed at the boundary of a company to prevent unauthorized physical access c. ... it from unauthorized access d. device to prevent all accesses from the internet to the corporate intranet
Last Answer : c. security device deployed at the boundary of a corporate intranet to protect it from unauthorized access
Description : Errors in a software program are referred to as: a) Viruses b) Bugs c) Computer Fault d) None of These
Last Answer : b) Bugs
Description : Error rate is A. an error-detectingcode based ona summation operation performed onthebits to be checked. B. a checkbit appended to anarrayof binary digits to make thesum of all thebinary digits. C. a ... ratioof the number ofdata units in error to the total number of dataunits E. None of the above
Last Answer : the ratioof the number ofdata units in error to the total number of dataunits
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
Description : Which memory is used to copy instructions or data currently used by CPU: a. Main memory b. Secondary memory c. Cache memory d. None of these
Last Answer : c. Cache memory
Description : Which computer memory is used for storing programs and data currently being processed by the CPU? A) Mass memory B) Internal memory C) Non-volatile memory D) PROM
Last Answer : Answer : B
Description : Which computer memory is used for storing programs and data currently being processed by the CPU? a) Mass memory b) Internal memory c) Non-volatile memory d) PROM e) None of these
Last Answer : b) Internal memory
Description : Geitonogamy involves (a) fertilisation of a flower by the pollen from another flower of the same plant (b) fertilisation of a flower by the pollen from the same flower (c) fertilisation of a flower ... of a flower by the pollen from a flower of another plant belonging to a distant population.
Last Answer : (a) fertilisation of a flower by the pollen from another flower of the same plant
Description : Right of a person to retain possession of some goods belonging to another until some debts of the person in possession is satisfied a) Pledge b) Bailment c) Lien d) Guarantee
Last Answer : c) Lien
Description : Geitonogamy involves:a)Fertilization of a flower by the pollen from a flower of another plant belonging to a distant population.b)Fertilization of a flower by the pollen from another flower of the same ... flower by the pollen from a flower of another plant in the same population
Last Answer : b)Fertilization of a flower by the pollen from another flower of the same plant
Description : Which shortcut key is used to close the currently active program: a) Ctrl + F4 b) Alt + F4 c) Ctrl + Alt + F4 d) None of These
Last Answer : b) Alt + F4
Description : What is mechanical error ? What is a mechanical fault ?
Last Answer : : In physics, if there is any defect in the instrument that we need for measuring while testing something, it is called mechanical error.
Description : Hi I have a Citroen C8 2.2 petrol year 2004, they repaired the connecting rods because it was bent on 4 cylinders, after the repairing the connecting rods the engine behaves well (lower consumption, ... have a similar experience? can the two defects be related in any way? Please any advice thanks
Last Answer : Need Answer
Description : Which one of the following is not a definition of error ? (A) It refers to the discrepancy between a computed, observed or measured value and the true, specified or theoretically correct value. (B) It ... to fail. (D) It refers to human action that results in software containing a defect or fault.
Last Answer : The input, or clock pulse.
Description : In software testing, how the error, fault and failure are related to each other? (A) Error leads to failure but fault is not related to error and failure (B) Fault leads to failure but error is ... Error leads to fault and fault leads to failure (D) Fault leads to error and error leads to failure
Last Answer : (C) Error leads to fault and fault leads to failure
Description : Define Bug, Error, Fault, and Failure.
Last Answer : Bug: A bug can be defined as the initiation of error or a problem due to which fault, failure, incident or an anomaly occurs. Error: A human action that produces an incorrect result. ... prescribed in the system specification. A software fault becomes a software failure only when it is activated.
Description : Explain LRU page replacement algorithm for following reference string. 7 0 1 2 0 3 0 4 2 3 0 3 2 1 2 0 1 7 0 1 Calculate the page fault.
Last Answer : LRU: The Least Recently Used (LRU) page replacement policy replaces the page that has not been used for the longest period of time. LRU replacement associates with each page the time of that page's last use. ... in question so assume frame size as 3 or 4) LRU: Assume frame size=3
Description : Consider a program that consists of 8 pages (from 0 to 7) and we have 4 page frames in the physical memory for the pages. The page reference string is : 1 2 3 2 5 6 3 4 6 3 7 3 1 5 3 6 3 4 2 4 3 4 5 ... to fill available page frames with pages): (A) 9 and 6 (B) 10 and 7 (C) 9 and 7 (D) 10 and 6
Last Answer : (B) 10 and 7
Description : Critical Region is: a) a set of instructions that access common shared resources which exclude one another in time b) the portion of the main memory which can be accessed only by one process at a time. c) Both of The Above d) None of The Above
Last Answer : a) a set of instructions that access common shared resources which exclude one another in time
Description : Earthquakes that occur along faults are created when ___________ a) Melted rock is erupted along the fault zone b) Stress builds up until rocks break c) The earth shifts and moves along fracture d) Answers b and c
Last Answer : d) Answers b and c
Description : The main importance of ARM micro-processors is providing operation with ______ A. Low cost and low power consumption B. Higher degree of multi-tasking C. Lower error or glitches D. Efficient memory management
Last Answer : A. Low cost and low power consumption
Description : A ______ contains specific rules and words t hat express the logical steps of an algorithm a) Programming language b) Syntax error c) Programming structure d) Logic chart e) None of these
Last Answer : a) Programming language
Description : The ……………. Determines when a page should be brought into main memory. A) Fetch policy B) Placement policy C) Replacement policy D) Resident set management
Last Answer : A) Fetch policy
Description : With ................ a page is brought into main memory only when the reference is made to a location on that page. A) demand paging B) main paging C) prepaging D) postpaging
Last Answer : A) demand paging
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
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
Description : What will be the output of the following segment of the program? main( ) { char *s = “hello world”; int i = 7; printf(“%, *s”, i, s); } (A) Syntax error (B) hello w (C) hello (D) o world
Last Answer : Answer: Marks given to all
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
Description : Fragmentation is: a) Dividing the secondary memory into equal sized fragments b) Fragments of memory words used in a page c) Fragments of memory words unused in a page d) None of The Above
Last Answer : c) Fragments of memory words unused in a page
Description : Breaking physical memory into fixed-sized bloclcs called as: (1) Packets (2) Page (3) Frames (4) Segments
Last Answer : Frames
Description : Machine language is A) Machine dependent B) Difficult to program C) Error prone D) All of above
Last Answer : Answer : D
Description : An error in computer program is called: a) Hacking b) Virus c) Bug d) None of These
Last Answer : c) Bug
Description : An error in a computer program is: a) Crash b) Bug c) Power Failure d) None of These
Last Answer : b) Bug
Description : Bug describes: a) An error in computer program b) Some problems in wires in computer system c) Only internet connectivity problem d) None of These
Last Answer : a) An error in computer program
Description : An error in a computer program is known as _______: a) Crash b) Power Failure c) Bug d) Virus e) Fatal Error