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11th Standard English Medium Computer Applications Subject Introduction to Internet and Email Book Back 3 Mark Questions with Solution Part - I

Published on: 11/06/2021

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Std: 11th Standard - Computer Applications

chapter: - Book back Questions

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Questions:

Generic 3

5 x 3 = 15

Write a note on two access methods of connecting to internet.

Differentiate Data Card and Dongles.

Write a note on Hotspot internet service.

What is TCP/IP ?

Differentiate PAN and CAN network

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Answers Key:

Generic 3

5 x 3 = 15

Two access methods of connecting to internet are,
(i) Indirect Access: This is most common method used in home and office networks. The device e-g. computer connects to a network using Ethernet or Wi-Fi and the network connects to the Internet using Asymmetric digital subscriber line ADSL(cable or fibre.)
(ii) Direct Access: This is most common method used when travelling. The device e.g. smart phone connects directly to the Internet using 3G/4G mobile networks or public Wi-Fi.

Data card	Dongles
It is a removable electronic card which is used for storing for data.	Refers to any removable component used for enabling extra security.
Types of data cards are 1. Expansion Card 2. Memory Card or Flash Card 3. Identification Card	USB Dongles can be divided into 1. Wi-Fi Dongles 2. Blue Tooth Dongle 3. Memory Dongle

(i) Hotspot is a physical location where people can access the Internet.
(ii) Internet access over a wireless local area network(WLAN) by way of a router that then connects to an Internet service provider.
(iii) Hotspots utilize Wi-Fi technology, which allows electronic devices to connect to the Internet or exchange data wirelessly through radio waves.
(iv) Hotspots can be phone-based or free-standing. commercial or free to the public.

The Internet works by using a protocol called TCP/ IP. TCP/IP allows one computer to talk to another computer via the Internet through compiling packets of data and sending them to right location.

Characteristics	Personal Area Network (PAN)	Campus Area Network (CAN)
Range	Upto 100 meters	Upto 5 Kms
Location	Used for a shorter distance, controlled by a single person within a single building	Larger than LAN Larger than LAN MAN. University, school or small business, enterprise
Speed	Up to 250 Kbps	40 KB/s To 1 MB/s
Advantages	Efficient, Cost-effective, and convenient. Controlled by a single person Hotspot may connect up to 8 devices	Cost-effective, Wired or Wireless Network, High Bandwidth with Multi-departmental Network access
Disadvantages	Shorter distance up to 10 meters only. The data rate is low compared to other networks	Difficult to manage.