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Q:

Where is a hub specified in the OSI model?

A) Data link layer B) Session layer
C) Application Layer D) Physical layer
 
Answer & Explanation Answer: D) Physical layer

Explanation:

Hubs are specified or operate at Layer1 i.e, the physical layer in the OSI model. Hubs regenerate electrical signals. A hub sends data packets (frames) to all devices on a network, regardless of any MAC addresses contained in the data packet.

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Filed Under: Networking
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Q:

Energy produced in nuclear reaction is given by

A) Charle's law B) Grahm's law
C) Gay - Lussac's law D) Einstein's law
 
Answer & Explanation Answer: D) Einstein's law

Explanation:
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Filed Under: Chemistry

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Q:

The Nobel Prize for chemistry for the year 2011 has been awarded to

A) Saul Perlmutter,Brain P. Schmid & Adam G. Riess B) Bruce A.Beutler,Jules A. Hoffmann
C) Christopher A. Sims & Thomas J. Sargent D) Dan Schechtman
 
Answer & Explanation Answer: D) Dan Schechtman

Explanation:
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Filed Under: Honours and Awards

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Q:

Galton’s whistle is most commonly associated with

A) Shark B) Horses
C) Elephants D) Dogs
 
Answer & Explanation Answer: D) Dogs

Explanation:

Galton's whistle is also called as Dogs whistle or silent whistle, is a type of whistle that emits sound in the ultrasonic range, which people cannot hear but some other animals can, including dogs and domestic cats, and is used in their training.

Image result for Galton’s whistle

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Filed Under: Animals and Birds
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Q:

We Can still delete a row from primary table if there are related rows in secondary table once a refferential integrity is enforced

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

Can’t delete a row from primary table if there are related rows in secondary table.

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Subject: Database
Job Role: Database Administration

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Q:

Study of inter relationship between living organism and their environment is called _______

A) Plant Geography B) Plant social science
C) Ecology D) Ecosystem
 
Answer & Explanation Answer: C) Ecology

Explanation:
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Filed Under: Biology

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Q:

What is the rank of India in World Economic Forum’s Global Human Capital Index (GHCI) 2017 ?

A) 103 B) 104
C) 105 D) 106
 
Answer & Explanation Answer: A) 103

Explanation:

India ranked low 103rd out of 130 countries surveyed on World Economic Forum’s (WEF) Global Human Capital Index (GHCI) 2017. In the previous edition India ranked 105th.

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Filed Under: Indian Economy
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Q:

The gas usually filled in the electric bulb is

A) Hydrogen B) Oxygen
C) Nitrogen D) Carbon dioxide
 
Answer & Explanation Answer: C) Nitrogen

Explanation:

The gas usually filled in the electric bulb is Nitrogen.

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Filed Under: General Science
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