How to Search the Internet: Once you get connected to the Internet, you need to know how to find the world wide wel sites and news group in which you are interested. You may find, as many people do, that it’s fun just to wonder or surf from site to site, going wherever the links take you. But if you want to find something specific and find it as soon as possible you need to use a search engine
Search Engine: A search engine is a service that indexes, organizes and often rates and reviews websites. It helps you find the links where you can find your specific keyword. Different search engines work in different ways
1 Some rely on people to maintain a catalogue of websites or pages.
2. Some use software or identify key information on sites across the Internet.
3. Some combine both types of services.
So when you search “Holdings, you’re bound to get different results.
There are many search engines like MSN in web search, AltaVista, Infoseek, Google, Lycos and Snap. None of the search engines keeps track of all the contents on the Internet. So, try several search engines to see which produce the most useful results for the types of information you usually look for. Whenever a search fails to produce the results you want, try another search engine.
Q.12. Give an introduction to some major search engines.
Ans. Introduction to Some Major Search Engines
1. Google: It is a web search engine developed by Google and is the most used search engine on the world wide web. The main purpose of this search is to hunt for text in publicly accessible documents offered by web servers, as opposed to other data such as images or data contained in databases.
2. MSN Web Search: Using this search page, you can conduct a basic web search or an advanced search specifying one or more of the following-the type of information, the language, the origin, the domain, the data created and the types of files contained in the webpage.
3. Alta Vista: At AltaVista, you can search for keywords or type your query in the form of a question Other features include Babelfish, which translates sites in several languages, Photo and Media Finder which searches for image and family filter, which helps you limit the types of results produced by the Search
4. Infoseek: Infoseek’s search engine boasts on extensive catalogue of sites. Infoseek has a directory, too, that categorises sites by topic using software. Some sites have been reviewed and are recommended.
5. Excite: A hybrid search engine, Excite fulfils the traditional search engine definition (it is always Visiting websites and catalogued them using software program), but also has a directory subsection of its cataloged sites that have been reviewed by people.
6. Yahoo: This is actually a directory rather than a search engine, meaning humans compile and categorise the sites it searches, so you may get fewer results. But Yahoo! makes it easy to search for sites by category and to continue your search using a search engine if you want to.
7. MetaCrawler: Rather than keeping its own database of websites, MetaCrawler conducts your search simultaneously on several search engines including Excite, Infoseek, Lycos and Yahoo! This takes a little longer than using just one search engine but it is likely to yield a more comprehensive set
MBA 1st Year Network And Internet Short Questions Answers Study Notes
Q.13. Internet service provider is an integral part of Internet. Comment(2005-061
Or What is an ISP? How do you select the ISP as per your need?
Or What is the role of ISP? Name Amy two ISPs.
Or What is an ISP? Can you get connected to Internet without an ISP?(2007-08)
Ans. ISP (Internet Service Provider): ISP is the agency which enables users to access Internet services. It is equipped with all tools and technology to provide the Internet service. For accessing the Internet, the computer at home or at offices have to be connected with each other. The connection can be made over a telephone line, leased line or wireless/radio link connection.
In old days, only telephone service providers provide the facility to access the Internet like BSNL MTNL etc. But today various CDMA technology based ISP have came into existence. Main CDMA ISP providers are Sify Broadband, Reliance and TATA Indicom.
ISP is an integral part of Internet but to be get connected with it, the following factors have to be considered:
1. Cost: While selecting ISP, cost of accessing the Internet is a major factor.
2. Connectivity: It is important to get a good and sustainable connectivity of computer to ISP over telephone line
3. Dial-up Region: It is better to check within your ISP providers about the facility for getting an Internet access of your account from other cities of the country.
4. Technical Service Offered by ISP: In case of any problem, ISPs also provide technical services like dialing a specific number provided by your ISP.
So, it can be said that without an ISP, it is impossible to be get connected to Internet.
Q.14. What are the advantages of using e-mail over traditional mail systems?
Or What are the common uses of e-mail? Why e-mail is not considered a real time communication system?(2008-09)
Ans. Advantages of Using E-mail over Traditional Mail Systems: These advantages are as follows: 1. It’s cheap. It costs nothing beyond what the user is paying for Internet access, if anything. Users
have not only postage but also paper and envelope costs. It’s typically cheaper than faxing, too saving the cost of fax paper and long distance telephone charges. Long messages cost the same as short ones and sending a letter to Switzerland costs the same as sending one across town.
2. It’s fast. Most e-mail messages are delivered within a few minutes or and even seconds, some messages can take a few hours and in very unusual cases even days. E-mail nevertheless remains the overwhelming odd-son favourite is a race against carried paper mail.
3. E-mail skips the whole process of printing message on paper and hand carrying then to the addresses which saves paper, time and energy. 4. Receivers can instantly send a reply to a message they’ve received.
5. Receivers can forward a message to someone else (perhaps a person who can answer a question the message asks). They can even print the message.
6. Senders also have e-mail options. They can send the same message to several recipients at once or post the message for anyone to send.
7. Traditionally, all you could include in mail message was words and that’s till true today for most of us. Internet, e-mailing with the increased use of graphical computing environments, such as Windows and the Macintosh however, people are beginning to include pictures (and sometimes even video clips or sound) in e-mail messages.
8. Delivery of letters can be made anywhere in the world.
9. Senders can also send messages to people who aren’t on the Internet by routing message mercial e-mail services, such as compuserve or MCI mail. They can even send to people who don’t have computers by the e-mail message to the recipient’s fax machine.
E-mail: Not a Real Time Communication System: E-mail is not considered a real time communication system because of the following reasons: .
1. Processing of e-mail was difficult as its messages had no internal structure.
2. Forwarding an e-mail to a group of persons was difficult.
3. The e-mail format did not support programs for writing the message and sending it.
4. There was no facility for acknowledgement.
Q.15. How will you send and receive e-mail on Internet?
Or How do you send an e-mail to your friend?(2005-06)
Or Write steps to send an e-mail message on a dial-up terminal.(2007-08)
Ans. Sending and Receiving E-mail on Internet or a Dial-up Terminal
1. On the PC, one composes a letter using his mail client software. A mail client allows a user to compose, edit and send the mail message. There are a number of mail client softwares available Gmail, Netscape Mail, Outlook Express, Edora, etc. are examples of mail client. These download your messages from the POP server to your computer and upload your outgoing messages to the SMTP server.
2. Letter writing will have the code of address, a subject line to describe the topic and the text or document which is to be sent.
3. Letter writing can either be online or offline as a file with aid of standard text editors like MS Word, Notepad, etc.
4. The message propagates across the Internet before it reaches the mail server of the recipient. The domain name in the recipient’s e-mail identifies his mail server and the username identifies the recipient on that server. For example, when you send mail to firstname.lastname@example.org the address of the mail server is ppq.vsnl.net.in and the user name is Vinay.
5. After composing the mail, the file is sent to the recipient’s e-mail address. E-mail can also send the same letter to a number of addresses by addressing the codes for each mail address.
6. The recipient connects to his e-mail account on his mail server to read the message sent to him. The recipient also uses a mail client to receive and save the printed mail messages.