InterviewUp – Job Interview Questions and Answers – What are demand- and pre-paging?

December 01, 2008

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What are demand- and pre-paging?

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Asked By: parktren

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With demand paging, a page is brought into memory only when a location on that page is actually referenced during execution. With pre-paging, pages other than the one demanded by a page fault are brought in. The selection of such pages is done based on common access patterns, especially for secondary memory devices.

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software engineer

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What are structured types of mutual funds?

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Asked By: david |

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Mutual fund schemes may be classified on the basis of their structure and their investment objective

By Structure- there are two types

Open-ended Funds -An Open-ended Fund is one that is available for subscription all through the year. These do not have a fixed maturity. Investors can conveniently buy and sell units at Net Asset Value (NAV) related prices.

Close-ended Funds -A Close-ended Fund has a stipulated maturity period, which generally ranges from 3 to 15 years. The fund is open for subscription only during a specified period. Investors can invest in the scheme at the time of the initial public issue and thereafter they can buy or sell the units of the scheme on the Stock Exchanges, if they are listed. The market price at the stock exchange could vary from the scheme's NAV on account of demand and supply situation, unit holders' expectations and other market factors.

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Friday, September 28, 2007

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structured, investment, mutual fund, Open-ended Funds, Close-ended Funds, NAV, maturity period, Investors

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Comments (2) :

s,RAJ SHE KHEAR

Saturday, June 07, 2008 6:50 AM

WHET ARE BIFFOJHHYU BVGF HYERDGHU HU JGFRAW

s,RAJ SHE KHEAR

Saturday, June 07, 2008 6:42 AM

CIOSE-ENBEBFUNSB -A CIOSE FUNU HSA A STPULATEBMATURITY

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What are states that the page can be in, after causing a page fault?

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Asked By: silme |

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On a swap device and not in memory, On the free page list in the main memory, In an executable file, Marked "demand zero", Marked "demand fill".

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Tuesday, May 13, 2008

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What are the bits that support the demand paging?

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Asked By: silme |

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Valid, Reference, Modify, Copy on write, Age. These bits are the part of the page table entry, which includes physical address of the page and protection bits.

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Tuesday, May 13, 2008

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What are data structures that are used for Demand Paging?

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Asked By: silme |

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Kernel contains 4 data structures for Demand paging. They are,

Page table entries,

Disk block descriptors,

Page frame data table (pfdata),

Swap-use table.

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Tuesday, May 13, 2008

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Operating System

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What are conditions for a machine to support Demand Paging?