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a message is sent asking for them to be re-sent. This continues until all packets have been received intact. The packets are
now reassembled into their original form.
5. Where are the possible places of an accident?
Ans. Accidents can take place anywhere:
● At home due to fall or slip,fire
● At workplace
● When out in the surrounding
● Road Traffic Accidents
● Industrial disease/illness
● Sports related accidents
6. Define the following terms:
a. Web Page
b. Web Site
c. IP Address
d. Web Server
Ans. a. Web Page: A digital page designed using HTML and contains the hypertext that helps link multiple pages.
b. Web Site: It is made up of multiple webpages interlinked using hyperlinks and hypertext and have a common related
content.
c. IP Address: It is a unique combination of characters that uniquely identifies each computer in a network.
d. Web Server: It is a computer which has the content of a specific website. The client computer sends a request for a web
content and the web server responds to the request by sending a copy of the web content on the client machine.
7. What is the difference between DSL and Cable Internet Access?
Ans. Digital Subscriber Line (DSL): It is a technology that is used to transmit digital data using telephone lines. It uses the existing
telephone lines to transmit high bandwidth data.
Cable Internet Access: It is a form of broadband that uses cable television infrastructure to give you high speed internet. It
is faster and more reliable than DSL.
8. What is online transaction? Write any three advantages of online shopping.
Ans. Online transaction is the process of buying and selling the products through the internet.
The following are the advantages of online shopping:
• Easy and convenient access of goods and services.
• A product or service that is not available in the local market is available online.
• Online reviews help give you a clear picture of the product you wish to purchase.
• The buyer has multiple options and multiple brands to choose from a single place.
9. What do you understand by ISP with respect to web applications? Name any two connection type that home users use.
[CBSE handbook]
Ans. The companies that provide an internet connection are known as Internet Service Providers (ISPs). Two types of connections
are as follows:
• Wired • Wireless
10. Give any four points of a healthy lifestyle.
Ans. A healthy lifestyle includes:
• Eating nutritious food in proper quantity and at right time.
• physical activities like Yoga, morning walk or regular exercise.
• Stress management can be done by mediation, spending time with family and friends, going out on vacations.
• Keeping your mind healthy with positive thoughts.
11. Define the following:
a. MODEM
b. URL
c. HTML
d. WWW
Web Applications and Security 385

