Do's and don'ts of Safe internet:
1. Don't give out your personal information - Don't put personal details such as your home address, telephone numbers or parent's work address online as cybercriminals can use this information to create a fake profile with your details.
2. What goes online, stays online - Use privacy settings to make sure only your friends and family can see photos you post. Avoid posting holiday plans as criminals have been known to track your movements.
3. Check your security and privacy settings - Make sure your social network privacy settings are secured so only your friends can see your personal information and use your privacy settings to restrict who can see your posts, videos and photos.
4. Password safety - Sharing your password with your parents is a sensible idea, but avoid sharing your password with your friends, even if they promise they won't tell anyone! Also, when setting your password, make sure it isn't something people may guess such as your pet's name. Use a mixture of letters, numbers and upper and lower cases characters.
5. Always protect your mobile device - Make sure your mobile phone is pin-protected so all your personal information stored on it is safe. Download a security app which allows you to remotely wipe any personal data, should your mobile be lost or stolen.
6. Don't talk to strangers online or offline - Don't meet up with strangers and let your parents know if a stranger has tried to get in contact with you online.
7. Listen to the adults who know - Adults will always be worried about you. Help set their mind at rest and avoid chatting online with strangers.

Five Internet Browsers are:
1. UC Browser:
(i) UC Browser is a creation of Chinese internet company UCWeb that was established in the year 2004.
(ii) UC Browser is a mobile browser that was originally launched as J 2 me-only application and today it is available for Android, iOS, BlackBerry, Symbian, Windows Phone and Java ME.
(iii) UC Browser has huge market share in India and China.
2. Opera:
(i) Opera is smaller and faster than most other browsers, yet it is full-featured.
(ii) It is fast, user-friendly, with keyboard interface, multiple windows, zoom functions, and more.
3. Microsoft Edge:
(i) Edge is a Microsoft product that symbolically follows its predecessor in ranking.
(ii) In contrast to Explorer, Edge is integrated with the latest extensions and does not support obsolete technologies.
(iii) It initially used EdgeHTML and Chakra engines by Microsoft. However, in 2019 the Blink and V8 engines were used to turn it into a Chromium-based browser.
4. Baidu:
(i) Baidu is a web browser created by an eponymous Chinese company.
(ii) Windows and Android users can attain and exploit it for free.
5. Lynx:
(i) Lynx is a fully-featured World Wide Web browser for users on Unix, VMS and other platforms running cursor-addressable, character-cell terminals or emulators.

There are many applications of internet such as:
1. Communication: Computer users around the world extensively use the email service on internet to communicate with each other. Pictures, documents and other files are sent as email attachments. VolP stands for Voice over Internet Protocol, referring to the protocol that underlies all internet communication.
2. Job search:
Nowadays many people search for their jobs online as it is quicker and there is a larger variety of jobs vacancies present. People can publish resume online for prospective job. Popular examples are Naukri.com, Linkedln, etc
3. Video conferencing: It enables direct face to face communication across networks via web cameras, microphones and other communication tools. Video conferencing can enable individuals in distant locations to participate in meetings on short notice, with time and money saving. Video conferencing is very interactive in education to communicate between teacher to teacher, teacher to classroom and classroom to classroom with students at different places.
4. E-commerce: E-commerce or electronic commerce is the buying and selling of goods and services, or transmitting of funds or data, over an electronic network. These transactions occur either business-to-business, business to consumer, consumer to consumer or consumer to business. Flipkart, Snapdeal, Paytm, etc are example of e-commerce.
5 Travel: One can use internet to gather information about various tourist place. It can be used for booking Holiday tours. Some of the websites providing this service are goibibo.com, makemytrip.com, olacabs.com.
6. Nowadays internet is almost use in every fields. Due to increase in technology, use of internet has benefitted the users in many ways. Internet enables millions of computers from different organization and people to communicate and share resource globally.

1. Mobile:
(i) Many cell phone and smartphone providers offer voice plans with Internet access.
(ii) Mobile Internet connections provide good speeds and allow you to access the Internet.
2. DSL:
(i) DSL, which stands for Digital Subscriber Line, uses existing 2-wire copper telephone line connected to one's home so service is delivered at the same time as landline telephone service.
(ii) Customers can still place calls while surfing the Internet.
3. Satellite:
(i) In certain areas where broadband connection is not yet offered, a satellite Internet option may be available
(ii) Similar to wireless access, satellite connection utilizes a modem.
4. Cable:
(i) Cable Internet connection is a form of broadband access.
(ii) Through use of a cable modem, users can access the Internet over cable TV lines.
(iii) Cable modems can provide extremely fast access to the Internet.
5. Wireless:
(i) Radio frequency bands are used in place of telephone or cable networks.
(ii) One of the greatest advantages of wireless Internet connections is the "always-on" connection that can be accessed from any location that falls within network coverage.
(iii) Wireless connections are made possible through the use of a modem, which picks up Internet signals and sends them to other devices.