1.Fill
in the blanks :-
1.RAM is a volatile memory.
2.Contents
of Read Only Memory are not erased even
when the computer is switched off.
3.Dynamic RAM needs to be constantly refreshed.
4.Static RAM is faster but costlier.
5.A
pen drive is a removable media secondary
memory.
6.SRAM
built into a microprocessor is called a Cache
7.An
SMS text message can contain up to 160
English characters and symbols.
8.Using
your cell phone outside your home area is called as Roaming.
9.INSAT System is India’s domestic communication
satellite system.
10.A
customer care Centre handles mainly inbound
calls.
11.Direct
marketing through telephone is known as telemarketing.
12.A
face-to-face meeting of two or more persons is called a videoconferencing.
13.Call
conference service of MTNL/BSNL allows a teleconference among a maximum of 5 persons.
2. Distinguish between :
|
1. RAM
|
ROM
|
|
1.This
is a short term memory.
|
1.This
is a long term memory.
|
|
2.Temporarily
holds the data
|
2.Permanently
holds the data.
|
|
3.When
you switched off the computer all the data written in the RAM are erased,
Thus RAM is a volatile memory.
|
3.ROM
retains its programs or data even when it is not electrically powered. Thus
ROM is a non-volatile memory.
|
|
2.SMS (Short Message Services)
|
Multimedia Message Services
|
|
1.SMS
helps to send text messages
|
1.
MMS Helps to send Text, Video, Picture
and Sound files.
|
|
2.SMS
is cheaper than MMS
|
2.
MMS is costlier than SMS
|
3.Give
the names of :
1.The two types of primary memory :-
RAM (Random Access Memory) and ROM (Read Only Memory)
2.The two types of RAM :-
Static Ram and Dynamic Ram
3.Removable media type of long-term
memory :- Compact Disk and Pen drive.
4.The parts of a microprocessor:-
Control Unit, Memory Registers and Arithmetic and Logic Unit.
5.Names of major microprocessor:-
AMD,IBM and Intel.
6.The two types of call centers :-
Customer care center and telemarketing.
7.The two conferencing techniques
using modern communication technologies:- Tele conferencing and video
conferencing.
8.The central room from which the path
and operations of a satellite is controlled:- Mission Control room.
4.Write
the expanded forms of the following abbreviations:-
1.DRAM:-Dynamic Random Access
Memory.
2.SRAM:-Static Random Access
Memory.
3.ROM:-Read Only Memory.
4.EEPRO:-Electrically erasable
programmable memory.
5.ALU:- Arithmetic And Logic
unit
6.MHz: -Mega Hertz.
7.Mips:-Million instructions
per second.
8.AMD:- Advanced Micro device.
9.SMS:- Short Message Service.
10.INSAT:-Indian National
Satellite.
11.WLL:- Wireless local loop
12.VolP:-Voice over Internet
Protocol.
5.State
whether the following statements are true or false:-
1.Primary
memories are volatile. True.
2.Memory
locations in a RAM can be randomly accessed for read-write operations. True.
3.Audio/video
cassette tapes are a sequential access. True.
4.
A DRAM is faster than an SRAM. False.
5.
A CPU cache is a dynamic RAM. False.
6.
An USB pen drive is an EEPROM. True.
7.
An SMS text message in Hindi can contain up to 160 characters and symbols. False.
8.
Cell phone users are charged for alerts messaged to them by the local police or
municipality. False.
9.
Mobile roaming mode charges are higher than those within your home area. True.
10.A
satellite-to-earth communication links called an uplink. False.
11.EDUSAT
is the first satellite launched by India. False.
12.An
internet call Centre is much cheaper to run than a conventional call Centre. True.
6.
Answer the following questions in one or two sentences each :
1.What is meant by a volatile memory?
Ans:-If
the data in the memory is get erased in the absents of power supply, that type
of memory is known as volatile memory.
2. State the use of ROM as main memory in a
computer.
Ans:-
ROM holds critical bootstrapping programs that are essential to bring the
computer to a state of readiness after it is powered on.
3.What is SMS?
Ans:-
SMS is a technology that enables the sending and receiving of messages between
mobile phones.
4. What is MMS?
Ans:-MMS
is a technology that allows mobile subscribers to exchange multimedia messages
with other mobile subscribers..
5. What are the space and ground segments
of a satellite communication system?
Ans:-The
space segment consists of one or more satellite. The earth segment consists of
number of earth-based stations interconnected by satellite.
6.What are the sues of the INSAT system?
Ans:-
INSAT system provides service to telecommunication, television broadcasting,
weather forecasting. Disaster warning.
7.What is Wireless Local Loop?
Ans:-WLL
is a communication system that
connects subscribers to regular
telephone network using electromagnetic signals instead of conventional copper
wires.
8.What is a Call Centre?
Ans:-
A call center is a centralized office used for handling a large volume of
operator –supported inbound and outbound telephone calls.
9.Which qualities are required in a Call
Centre representative?
Ans:-A
call center job requires good communication skills, politeness and lot of
patients.
10.What is an Operator Control Room?
Ans:-
Operator control room is a single room from which one or more operators
supervise and control all the automatic equipment of an industry.
