An HTTP Request Containing Which Header Instructs the Content Server

question 26

Multiple Choice

An HTTP request containing which header instructs the content server to return whether the requested object has been modified since the last visit?

• A) Pragma: no-cache
• B) GET If-Modified-Since
• C) Cache-control: max-age
• D) None of the above

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Definitions:

Intermolecular Forces

Forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions).

Specific Heat Capacity

The quantity of thermal energy necessary to increase the temperature of a given mass of a material by one degree Celsius.

Hydrogen Bonding

A type of weak chemical bond that occurs when a hydrogen atom, which is covalently bonded to a highly electronegative atom, is attracted to another electronegative atom.

Temperature Vs. Heat

Temperature measures the kinetic energy of particles in an object, while heat refers to the transfer of energy from one object to another because of a temperature difference.