Question

4.long answer questions:-
(a)Explain different types of computer networks with example.
(b) What is MS Access? Write three characteristics of DBMS software.​

Answer 1

Answer:

1) ᴛᴡᴏ ʙᴀꜱɪᴄ ɴᴇᴛᴡᴏʀᴋ ᴛyᴩᴇꜱ ᴀʀᴇ ʟᴏᴄᴀʟ-ᴀʀᴇᴀɴᴇᴛᴡᴏʀᴋꜱ (ʟᴀɴꜱ) ᴀɴᴅ ᴡɪᴅᴇ-ᴀʀᴇᴀɴᴇᴛᴡᴏʀᴋꜱ (ᴡᴀɴꜱ). ʟᴀɴꜱ ᴄᴏɴɴᴇᴄᴛᴄᴏᴍᴩᴜᴛᴇʀꜱ ᴀɴᴅ ᴩᴇʀɪᴩʜᴇʀᴀʟ ᴅᴇᴠɪᴄᴇꜱ ɪɴ ᴀ ʟɪᴍɪᴛᴇᴅ ᴩʜyꜱɪᴄᴀʟ ᴀʀᴇᴀ, ꜱᴜᴄʜ ᴀꜱ ᴀ ʙᴜꜱɪɴᴇꜱꜱ ᴏꜰꜰɪᴄᴇ, ʟᴀʙᴏʀᴀᴛᴏʀy, ᴏʀ ᴄᴏʟʟᴇɢᴇ ᴄᴀᴍᴩᴜꜱ, ʙy ᴍᴇᴀɴꜱ ᴏꜰ ʟɪɴᴋꜱ (ᴡɪʀᴇꜱ, ᴇᴛʜᴇʀɴᴇᴛ ᴄᴀʙʟᴇꜱ, ꜰɪʙʀᴇ ᴏᴩᴛɪᴄꜱ, ᴡɪ-ꜰɪ) ᴛʜᴀᴛ ᴛʀᴀɴꜱᴍɪᴛ ᴅᴀᴛᴀ ʀᴀᴩɪᴅʟy.

2) ᴄʜᴀʀᴀᴄᴛᴇʀɪꜱᴛɪᴄꜱ ᴏꜰ ᴅᴀᴛᴀʙᴀꜱᴇ ᴍᴀɴᴀɢᴇᴍᴇɴᴛ ꜱyꜱᴛᴇᴍ

ɪᴛ ꜰᴏʟʟᴏᴡꜱ ᴛʜᴇ ᴀᴄɪᴅ ᴄᴏɴᴄᴇᴩᴛ ( ᴀᴛᴏᴍɪᴄɪᴛy, ᴄᴏɴꜱɪꜱᴛᴇɴᴄy, ɪꜱᴏʟᴀᴛɪᴏɴ, ᴀɴᴅ ᴅᴜʀᴀʙɪʟɪᴛy).ᴅʙᴍꜱ ꜱᴜᴩᴩᴏʀᴛꜱ ᴍᴜʟᴛɪ-ᴜꜱᴇʀ ᴇɴᴠɪʀᴏɴᴍᴇɴᴛ ᴛʜᴀᴛ ᴀʟʟᴏᴡꜱ ᴜꜱᴇʀꜱ ᴛᴏᴀᴄᴄᴇꜱꜱ ᴀɴᴅ ᴍᴀɴɪᴩᴜʟᴀᴛᴇ ᴅᴀᴛᴀ ɪɴᴩᴀʀᴀʟʟᴇʟ.

Answer 2

Answer:

(a)Explain different types of computer networks with example.

Answer:

LAN(Local Area Network)

<>Local Area Network is a group of computers connected to each other in a small area such as building, office.

<>LAN is used for connecting two or more personal computers through a communication medium such as twisted pair, coaxial cable, etc.

<>It is less costly as it is built with inexpensive hardware such as hubs, network adapters, and ethernet cables.

<>The data is transferred at an extremely faster rate in Local Area Network.

<>Local Area Network provides higher security.

PAN(Personal Area Network)

<>Personal Area Network is a network arranged within an individual person, typically within a range of 10 meters.

<>Personal Area Network is used for connecting the computer devices of personal use is known as Personal Area Network.

<>Thomas Zimmerman was the first research scientist to bring the idea of the Personal Area Network.

<>Personal Area Network covers an area of 30 feet.

<>Personal computer devices that are used to develop the personal area network are the laptop, mobile phones, media player and play stations.

MAN(Metropolitan Area Network)

<>A metropolitan area network is a network that covers a larger geographic area by interconnecting a different LAN to form a larger network.

<>Government agencies use MAN to connect to the citizens and private industries.

<>In MAN, various LANs are connected to each other through a telephone exchange line.

<>The most widely used protocols in MAN are RS-232, Frame Relay, ATM, ISDN, OC-3, ADSL, etc.

<>It has a higher range than Local Area Network(LAN).

(b) What is MS Access? Write three characteristics of DBMS software.

Answer:

Microsoft Access is a database management system from Microsoft that combines the relational Microsoft Jet Database Engine with a graphical user interface and software-development tools. It is a member of the Microsoft Office suite of applications, included in the Professional and higher editions or sold separately.

Characteristics of Database Management System

Provides security and removes redundancy.

Self-describing nature of a database system.

Insulation between programs and data abstraction.