Questions

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:

 In enterprise data modeling, which is incorrect?

A) You review current systems. B) You implement the new database.
C) You describe the data needed at a very high level of abstraction. D) You plan one or more database development projects.
 
Answer & Explanation Answer: B) You implement the new database.

Explanation:
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Filed Under: Database

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Q:

Which the smallest among all the birds?

A) Ostrich B) Humming Bird
C) King Fisher D) Sparrow
 
Answer & Explanation Answer: B) Humming Bird

Explanation:

humming Bird is the smallest among all the birds

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Filed Under: Books and Authors

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Q:

Name the award ehich is declared yearly for films produced in India in the previous Year

A) Jananpeth award B) Bharat Ratna
C) National Film Award D) Param Vir Chakra
 
Answer & Explanation Answer: C) National Film Award

Explanation:
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Filed Under: Honours and Awards

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Q:

Primitive people practice animal rearing  in the tropical grasslands of _______

A) Brazil B) Northern Australia
C) East Africa D) Orinoco Basin in South America
 
Answer & Explanation Answer: C) East Africa

Explanation:
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Filed Under: World Geography

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Q:

What is the strength of the signal transmitted by powerful cell phones?

Answer

the powerful cell phones can transmit a signal of 3 watts.

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Subject: Hardware

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Q:

What occurs when an atom loses an electron?

A) The atom's radius decreases and the atom becomes a positive ion. B) The atom's radius increases and the atom becomes a negative ion.
C) The atom's radius decreases and the atom becomes a negative ion. D) The atom's radius increases and the atom becomes a positive ion.
 
Answer & Explanation Answer: A) The atom's radius decreases and the atom becomes a positive ion.

Explanation:

When an atom loses an electron it becomes a positive ion by acquiring negatively charged. When it loses electron, the atom's radius also decreased.

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Filed Under: Chemistry
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Q:

Phage typing is based on the fact that

A) viruses cause disease B) bacteria and viruses are related
C) bacteria are destroyed by viruses D) bacterial viruses attack specific cells
 
Answer & Explanation Answer: D) bacterial viruses attack specific cells

Explanation:

Phage typing is based on the fact that bacterial viruses attack specific cells. Phage typing is a method used for detecting single strains of bacteria. It is used to trace the source of outbreaks of infections. 

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Filed Under: Biology
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