M150a Review Questions
M150a Review questions
Unit ( 1 – 2 – 3 – 6 )
Unit 1
Q1 : Define the following terms :
Persona : A " picture " of someone created by various collections of data about him\ her.
Information : An item of knowledge that is generated by linking together items of data to answer question of interest.
Perceptual data: The most primitive form of data that we can perceive with our senses.
Sign (or symbol): Something that conveys some information by means other than direct representation.
Internet : Refers to the physical interconnection of large numbers of data communications networks to form a huge , publicly accessible " network of networks " .
Web : The collection of linked data stored on the internet which is accessed using a browser and it is one of many services that run on the internet.
Search engine : A computer application that facilitates finding information on a particular topic on the web . (For example: Yahoo & Google).
Gateway: A website intended to direct users to other preselected website containing information on particular topic.( Advantage : instead of searching the whole of the web for information , a gateway provides a very focused means of getting information).
Database server : A computer that responds to the requests from other computers . and it task is finding and extracting data from a database.
Distributed system: A system consists of separate computers that exchange data and information across a network to produce results for a user.
Q2 : Signs can be of many types . state three of them with an example of each .
a) Audible (e.g. beep and tones used as warnings).
b) Visual (e.g. road signs).
c) Tactile (e.g. Braille system). Q3: Remote sensing satellites have been examining the earth in two ways. Mention them.
a) Using the spectrum of light visible to our eyes , in addition to infrared and ultraviolet radiation.
b) Using temperature ( false color technique ) . Q4: computers are tools for finding . Explain this with
Unit ( 1 – 2 – 3 – 6 )
Unit 1
Q1 : Define the following terms :
Persona : A " picture " of someone created by various collections of data about him\ her.
Information : An item of knowledge that is generated by linking together items of data to answer question of interest.
Perceptual data: The most primitive form of data that we can perceive with our senses.
Sign (or symbol): Something that conveys some information by means other than direct representation.
Internet : Refers to the physical interconnection of large numbers of data communications networks to form a huge , publicly accessible " network of networks " .
Web : The collection of linked data stored on the internet which is accessed using a browser and it is one of many services that run on the internet.
Search engine : A computer application that facilitates finding information on a particular topic on the web . (For example: Yahoo & Google).
Gateway: A website intended to direct users to other preselected website containing information on particular topic.( Advantage : instead of searching the whole of the web for information , a gateway provides a very focused means of getting information).
Database server : A computer that responds to the requests from other computers . and it task is finding and extracting data from a database.
Distributed system: A system consists of separate computers that exchange data and information across a network to produce results for a user.
Q2 : Signs can be of many types . state three of them with an example of each .
a) Audible (e.g. beep and tones used as warnings).
b) Visual (e.g. road signs).
c) Tactile (e.g. Braille system). Q3: Remote sensing satellites have been examining the earth in two ways. Mention them.
a) Using the spectrum of light visible to our eyes , in addition to infrared and ultraviolet radiation.
b) Using temperature ( false color technique ) . Q4: computers are tools for finding . Explain this with