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Q:

Describe the Buddy system of memory allocation.

Answer

Free memory is maintained in linked lists, each of equal sized blocks. Any such block is of size 2^k. When some memory is required by a process, the block size of next higher order is chosen, and broken into two. Note that the two such pieces differ in address only in their kth bit. Such pieces are called buddies. When any used block is freed, the OS checks to see if its buddy is also free. If so, it is rejoined, and put into the original free-block linked-list.

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Subject: Operating Systems

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Q:

' Crime and Punishment ' was written by

A) Alexander Solzhenitysn B) Lewis Carroll
C) Fyodor Dostoevsky D) Valdimir Nabakov
 
Answer & Explanation Answer: C) Fyodor Dostoevsky

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Filed Under: Books and Authors

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Q:

Who invented Electrocardiograph(EKG)?

Answer

The EKG was invented by Willem Einthoven in 1903 and is used to monitor and analyze past and present heart activity in an individual.

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Subject: Inventions

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Q:

Using OQL, you may do which of the following?

A) Return an entire collection of elements including duplicates. B) Return a collection of elements without duplicates.
C) Return a specific subset of elements using a given criteria. D) All of the above.
 
Answer & Explanation Answer: D) All of the above.

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Filed Under: Database

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Q:

Which of the following gulf countries has imposed value added tax (VAT) from January 1, 2018?

 

A) Bahrain and Kuwait   B) Oman and Saudi Arabia  
C) Kawait and UAE   D) UAE and Saudi Arabia  
 
Answer & Explanation Answer: D) UAE and Saudi Arabia  

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Filed Under: Indian Geography
Exam Prep: Bank Exams

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Q:

Select the synonym of

 

melodramatic

 

A) tranquil B) halcyon
C) bucolic D) theatrical
 
Answer & Explanation Answer: D) theatrical

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Which of these following "Pizza" is originated from?

A) Mexico B) Italy
C) Canada D) Chaina
 
Answer & Explanation Answer: B) Italy

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Filed Under: General Awareness

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Q:

Which country has replaced China as the top retail destination in 2017 Global retail development index ?

A) Russia B) India
C) Japan D) USA
 
Answer & Explanation Answer: B) India

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Filed Under: Indian Economy
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

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