Class 10 Info Tech Code 402 NCERT Solution
Unit 4 – Web Applications and Security
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 1 Working with Accessibility Options 50+ Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 2 Networking Fundamentals 50+ Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 3 Introduction to Instant Messaging 50+ Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 4 Chatting with a Contact Google Talk Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 5 Creating and Publishing Web Pages Blog Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 6 Using Offline Blog Editors Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 7 Online Transactions Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 8 Internet Security Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 9 Maintain Workplace Safety Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 10 Prevent Accidents and Emergencies Question Answer
- Class 10 IT Code 402 Unit 4 Web Applications Security Session 11 Protect Health and Safety at Work Question Answer
- Class 10 Info Tech 402 Unit 4 Web Application and Security Notes download pdf
SESSION 1 : WORKING WITH ACCESSIBILITY OPTIONS
Assessment
Fill in the blanks
- The option in Microsoft Windows XP used for helping users with physical disabilities and to reduce repetitive strain is Sticky Keys.
- Sound Sentry is designed to help users with auditory impairments.
- The High Contrast option in Microsoft Windows XP is designed to assist people with vision impairments.
- Serial Keys is designed to assist people that have difficulty using a keyboard or a mouse.
Class 10 Info Tech Code [402] Web Applications and Security NCERT Solution
SESSION 2 : NETWORKING FUNDAMENTALS
ASSESSMENT
I. Fill in the blanks:
- The acronym for LAN is Local Area Network.
- Three types of Wired Internet Connectivity are Dial Up, DSL & Cable Internet Access.
- Three types of Wireless Internet Connectivity are 3G, WiMAX & Wi-Fi.
II. Answer the following:
1. Define networking?
Answer: Network is a group of devices linked to one another.
A computer network is a collection of computers and other hardware components interconnected by communication channels (cables or satellites) that allow sharing of resources and information.
2. Give any three advantages of networking.
Answer: Advantages of Networking are : (a) Sharing Software and Hardware resources (b) Helps in communication (c) Breaks the barriers of distance, cost and time. (d) File transfer
3. Explain the term packet with reference to data transfer.
Answer: When data transfer from one computer to another using Network / Internet, data is divided into the smaller segments, called packets.
Each packet is sent from sender computer to receiver computer either using the same route of different route. At the destination these packets are reassembled into their original form.
4. Explain Wifi and its significance.
Answer: Wi-fi stands for wireless fidelity. Wi-Fi is a popular technology that allows an electronic device such as computers or mobile phones to exchange data wirelessly over a network, including high-speed Internet connections.
Significance of Wi-Fi :
(a) Wi-Fi is used where cables cannot be run (such as old buildings, outdoor areas) to provide network and Internet access.
(b) Wi-Fi can also be used where users require mobile connectivity.
5. Compare LAN with WAN.
Answer: LAN : A local area network (LAN) is one which connects computers and devices in a limited geographical area such as home, school, computer laboratory, office building, or closely positioned group of buildings.
WAN : A wide area network (WAN) is one which covers a broad area. Internet is the example of WAN.
6. Expand the following terms : DSL, ISP, Modem, WWW, LAN, MAN, WAN, P2P
Answer:
a. DSL – Digital Subscriber Line
b. ISP – Internet Service Provider
c. Modem – Modulator Demodulator
d. WWW – World Wide Web
e. LAN – Local Area Network
f. MAN – Metropolitan Area Network
g. WAN – Wide Area Network
h. P2P – Peer-to-Peer
7. Explain P2P Architecture and how it is different from Client Server Architecture?
Answer: In peer-to-peer network all computers have an equal status. There is no specifically designated server. The computers in P2P can switch their roles as and when required.
In client-server architecture, one computer is dedicated for providing services to other computer, called Server (Dedicated Server), while other computers works as client which access the services given by server.
Class 10 Info Tech Code [402] Web Applications and Security NCERT Solution
SESSION 3: INTRODUCTION TO INSTANT MESSAGING
ASSESSMENT
1. Fill in the blanks:
a. Instant messaging (IM) is a form of communication over the Internet that offers an instantaneous transmission of text-based messages from sender to receiver.
b. Microphones & headsets or speakers & Web Camera are required for audio and video conferencing.
2. List any five application based instant messaging software.
Answer: Google Talk, Yahoo! Messenger, Skype, Windows Live Messenger, Rediff Bol
3. What do you mean by instant messages?
Answer: Instant messaging (IM) is a form of communication over the Internet that offers an instantaneous transmission (real time) of text-based messages from sender to receiver.
4. Give any three key features of Instant Messaging.
Answer: Key Features of an instant messaging are as follows:
• Text Messages can be sent to one or more person (Similar to SMS)
• Audio calling and conferencing.
• Video calling and conferencing.
• File transfers (Not limited to documents, spread sheets, audio files, video files, etc.)
• Message history (Save messages for future reference).
