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STD IX CH. 2. Question Answers



ICT TOOLS  CHAPTER 2.
Q.l.  Fill in the Blanks:
(1)    In early 1970s communication was through __________.
(2)__________ is the information super highway.
(3)__________ are recently available visual display units.
(4)A_____________________ is an electronic visual display.
(5)Internet now uses__________ communication techniques.
(6)Earlier we were using__________ communication technique.

Ans.(1) Radio, (2) Internet, (3) LED T.V, (4) Touch Screen, (5) Digital, (6) analog.

 Q.2. State whether following statements are True or False.
1.  Nowadays people prefer Laptops / Tablet PCs.
2.  A touch screen is an electronic visual display.
3.  The GSM standard is rapidly growing in popularity in the US, South America and certain parts of Asia.
4.  Digital communication is not easier or faster.
Ans. (1) True, (2) True, (3) False, (4) False.
Q.3. Match the following correctly:
(A)
(B)
1.    Laptops
2.    Visual Communication
3.    Wireless Communication
4.    Touch Screen
a)    Mobiles
b)    Electronic visual display
c)    Television
d)    Compact
Ans: (l-d), (2-c), (3-a), (4-b).
Q.4. Answer the following questions in brief:
1. What is a touch screen?
Ans: A touch screen is an electronic visual display that can detect the presence and location of a touch within the display area.
2. What is CDMA?
Ans. CDMA is an acronym which stands for Code Division Multiple Access. CDMA is the newest and allows for the highest capacity and highest mobile data throughout.
Ans. Due to Internet the world has come closer. It has opened door to access several libraries. Communication has become more easier, faster and secure.
Ans. Different types of televisions are Color TV., LCD TV., Plasma TV and LED TV.
Ans. A laptop is a compact model of desktop and can be carried any where easily.
Some of the advanced mobiles which support internet access, wi-fi, blue tooth, camera, SMS and MMS systems are known as Tablet PCs.
6. Differentiate between laptop and desktop.
Ans. A laptop is a compact model of desktop and can be carried any where easily.
We can use desktop for storing and retrieving data but it is not a compact model and can't carry any where easily.

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