Questions

Q:

Explain the popular multiprocessor thread-scheduling strategies.

Answer

  1. Load Sharing: Processes are not assigned to a particular processor. A global queue of threads is maintained. Each processor, when idle, selects a thread from this queue. Note that load balancing refers to a scheme where work is allocated to processors on a more permanent basis.

  2. Gang Scheduling: A set of related threads is scheduled to run on a set of processors at the same time, on a 1-to-1 basis. Closely related threads / processes may be scheduled this way to reduce synchronization blocking, and minimize process switching. Group scheduling predated this strategy.

  3. Dedicated processor assignment: Provides implicit scheduling defined by assignment of threads to processors. For the duration of program execution, each program is allocated a set of processors equal in number to the number of threads in the program. Processors are chosen from the available pool.

  4. Dynamic scheduling: The number of thread in a program can be altered during the course of execution.

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Q:

Positive ions are formed from neutral atoms by loss of

A) neutrons B) protons
C) nuclear charge D) electrons
 
Answer & Explanation Answer: D) electrons

Explanation:
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Filed Under: Chemistry

21 9235
Q:

Which of the following is called 'the King of Chemicals' ?

A) Nitric acid B) Hydrochloric acid
C) Silver nitrate D) Sulphuric acid
 
Answer & Explanation Answer: D) Sulphuric acid

Explanation:

Sulphuric acid is called the King of Chemicals because it is used in the preparation of a very large number of other useful chemicals such as hydrochloric acid, nitric acid, dyes, drugs etc. In fact the annual production of shulpuric acid in a country is a measure of the economy of the country.

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9 9229
Q:

Agha khan cup is associated with

A) Football B) Tennis
C) Cricket D) Hockey
 
Answer & Explanation Answer: D) Hockey

Explanation:
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Filed Under: Sports
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11 9228
Q:

What is the most commonly spoken language in the world?

A) Mandarin Chinese B) English
C) Spanish D) Hindi
 
Answer & Explanation Answer: A) Mandarin Chinese

Explanation:
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3 9223
Q:

When light enters from air to water, then its 

A) frequency increases and speed decreases B) frequency is same but the wavelength is smaller in water than in air
C) frequency is same but the wavelength is larger in water than in air D) frequency and speed both decreases
 
Answer & Explanation Answer: B) frequency is same but the wavelength is smaller in water than in air

Explanation:
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Filed Under: Physics

13 9223
Q:

‘Panchatantra’ is originally written by _____________.

A) Kalidas B) Vishnu Sharma
C) Tulsi Das D) None of these
 
Answer & Explanation Answer: B) Vishnu Sharma

Explanation:
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Filed Under: Indian Culture

125 9221
Q:

Take Off Stage in an economy means

A) All controls are removed B) Economy is stagnant
C) Steady growth begins D) Economy is about to collapse
 
Answer & Explanation Answer: C) Steady growth begins

Explanation:

"Take Off Stage" in an economy means Steady growth begins.

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Filed Under: Indian Economy
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9 9219