Internet basics for dummies

August 26, 2007 RENU

1. Website– doc hosted on a server, written in HTML lang.

2. HTML- hypertext markup language. 1 of early inventions of internet to publish websites so info is standard on server & still be read by many diff comps that may not all be same but even so can read info same way. It’s what allows web page to be so dynamic, allows publisher, the creator of that web doc to create diff links so u can hop from 1place to another.

3. Server/ host is fancy name for comp that is faster, more powerful & capable of doing more things at same time than normal comp. It will actually hold the main repository, the library, that has the content that’s going to be available to people surfing net looking for particular content. Home comps can act as a server in a sm way or can be a bldg with racks & racks of servers & comps that are connected, that are handling millions & millions of requests at same time.

4. Search engine- Internet’s librarian. They grew out of a combination of sm programming technologies that allowed little spiders & bots & crawlers to go out on net & do searching & indexing for various kinds of info. But now this has been perfected by Google & Yahoo.

5. Login- Pwd/login name & username r the secret codes that u’ve set up as an agreement betn u & ur host or email provider which allows u to access info or website for security. Combination of letters & no’s is more secure.

6. URL– Universe Resource Locator. Website address, ex- Yahoo.com, MySpace.com.

7. Http– hypertext transfer protocol

8. Domain name– ur company’s or website name, ex- http://www.mycompanyhere.com, .tv, .biz.

9. Browser allows u to point to diff locations, then actually pull up content from diff locations.

10.Blog: A log is journal or a diary that people add new statements or comments to. A blog is a journal or diary on net. There r many sites that hosts blogs, most professional websites have blogs which allow u to add new info to what they’re doing. It could be private or public.

11. Cache was lot more necessary during days of dial-up on ne b’cos websites contain massive amounts of info & a lot of that info stays the same from 1day to the next. So if u were to go on 1website today & the same website tomorrow, most of the info would stay the same, some of the text would change. So caches were created as a way of storing that data that doesn’t change, b’cos dial-up was a slow form of communication. In today’s days of high speed internet, it’s much less necessary to cache websites as u browse. In fact, with a high speed connection, caching ur website can actually slow you down b’cos if ur comp has to look in ur cache & find out what’s new, what’s changed, what’s diff, it takes much more time than just pulling the new info down.

12. DPI-dots per inch. it has to do with how detailed the resolution is of the image that u’re looking at. If u’re sending an email with a photo, 72 DPI is typically what u’d use, if this image is going to be displayed on a webpage or just sent to look at onscreen but not to print. 300 DPI, appropriate for printing basic image. If going to do big, big, high resolution blow-ups of s’thing, or real photo qlty prints, 600 DPI or 2400 DPI. You can really go even higher and higher in terms of detail & resolution. The more DPI you have, the more resources & more memory to contain image, but more qlty & takes long to transmit, print.

13. LAN- Local Area Network, simple home network at office or house, where all comps on network r sharing their internet connection & r connected through the same switch, the same router & the same networking device.
WAN– wide area network. comp’s that r on diff local segments & r only interconnected b’cos they r on World Wide Web.
PAN- personal area network. It is connection u personally have with technology around u. The way ur cellphone communicates with ur laptop, the way ur Bluetooth headset communicates with ur cellphone & laptop, the way u communicate with ur car’s Bluetooth system. Bluetooth is currently the most notable PAN, but Infra-Red is also a notable PAN, and some low level Radio Frequency & wireless.

14. Cellular router or 3G device is the same technology that allows to talk on cell phone, where ur wireless carrier is basically converting ur voice into data. They allow u to plug in with a card that has a phone no assigned to it, but the card’s only function is to transmit & receive data. It does no talking, it simply sends & receives data through use of 3G technology.

15. FTP– file transfer protocol. It’s 1 of many standardized protocols that allows net to function. It allows transmissions, sending & receiving of data, sound, images on net to function. It’s 1 of the protocols thats existed on net for a long time that allows pkt’s of info to be moved around.

16. Modem “modulator demodulator.” In early days of Internet, before broad band network came, modem used to convert sounds to zeroes & ones & vice versa. Thus all those whistles & bells & clicks that u hear whenever u dial a fax machine, or whenever a fax machine dials incorrectly & u pick up, what u’re hearing is this old style modem technology. Very inefficient, but it was the only option available for a long, long time & still has appl’s here & there.

17. Java- 1 of many prog lang’s on Web. It’s very powerful, developed by sun microsystems. It does deliver certain kinds of appl’s & func’s on many, many web pages. It can create a lot of diff kinds of interactive possibilities for user as they’re browsing web.

18. Active X- 1 of many newer web technologies that allows animated content, developed by Microsoft.

19. CGI– Common Gateway Interface. 1 of many ways in which interactivity betn user & web page can be programmed & experienced. It’s 1 of the ways that u when interact with a web page can be prompted to enter certain info, & consequently drive & actually alter that web page by entering info through this common gateway interface.

20. Download– Bringing picture etc from web to ur comp & upload is viceversa.

21. POP– post office protocol. 1 of many standardized communications protocols that allows for capturing & interacting with e-mail on web. Specifically what a pop enabled mail server allows u to do is use ur local mail client like an outlook & outlook express Mac mail program to actually fetch that mail for u from ur web post, from ur server bring it down to ur comp locally. It’s very effective way of fetching mail, downloading mail quickly & allows u to organize it easily & really track all ur communications.

22. File compression-compression of files such as text file, a picture, or even music, for sending or receiving info in a smaller or a bundle file.

23. Dial-up technology- Not so long ago there were no broadband networks, no DSL, no cable internet. Broadband was reserved for big coprorations, govt, so only communications structure that existed was telephone network. Dial-up would use modem. It’s not very fast.

24. Link- If want to send s’thing very, very big, that takes up too many MB’s, hard to send through email, then just send link which is a little piece of code that they can click on, that will point right to that server & allow them to access that info.

25. IP- diff locations on web can actually all be reduced to nos. This no is expressed in s’thing called internet protocol. It’s usually a series of 4nos separated by a dot. If u dial up Yahoo.com, there is a resource out there on net that converts that request into that series of digits, into that numerical address that is the translation of Yahoo.com.

26. CD-ROM- stores digital info, most commonly music, can hold 7MB of any digital data. Every comp nowadays have capability of reading & burning CD-ROMS.

27. Icon- part of GUI, symbol that u can click, can be a shortcut or may just points to someplace else on comp.

28. Plug-ins- r ur friends, make ur browsing experience more robust. Lots of diff companies & lots of diff people have built web that is constantly under devpment. Webbrowsers like Internet Explorer, Firefox, Netscape, Opera, Safari etc gets changed too, so get flash plug, which lets u run certain kinds of animation. Allow that ActiveX control to happen. Download the latest Java update so that comp can run Java applications more effectively.

29. Spam- Any electronic junk mail. Spam is both a noun & a verb.

30. ISP- Internet service providers. Data transfer rate is really imp b’cos ISPs can make claims that u can have a certain download speed, but depending on where u’re, u may not be abe to receive those speeds. How close u’re to the central office will make an impact too.

31. Downstream- info u receive from net, ex, downloading file. Upstream is viceversa, ex email or attachment to somebody.

32. DSL- digital subscriber line is a broadband technology that enables u to connect to net via ur existing phone line. DSL modem allows that connection to happen simultaneously, so u’ll be connected to net 24 hrs a day without interrupting phone service. If u’ve a DSL modem, then u’d have phone line going into DSL modem & an Ethernet or RJ45 cable coming from DSL modem to ur comp or network.

33. Cable modem- box or device that u attach to ur comp or local network that will give u net access to all machines in ur home or business. If u’ve a cable modem, u’re generally going to have a coaxial cable coming in & an Ethernet cable (also known as an RJ45 cable) that goes from cable modem to ur network.

34. Protocol- lang that allows devices to talk to each other.

35. Bluetooth- 1 of the more recent devpments of technology. Most common Bluetooth is a headset that is used to connect with a cell phone. This allows u to have the good sound in & out through ur cell phone without holding phone. It’s hands free. U also don’t have problem of a cord. Bluetooth technology can send sound as well as data very, very easily betn a cell phone & Bluetooth devices.

36. PDAs– personal data systems like Palm Pilot, a Blackberry, or a Trio if enabled with Bluetooth, communicate with ur comp to synchronize data, info, addresses, calendars, phone no’s, etc. without needing bulky cord to be connected to comp & phone.

Advertisements

Entry Filed under: Computer

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Trackback this post  |  Subscribe to comments via RSS Feed

Pages

Categories

Calendar

August 2007
M T W T F S S
    Sep »
 12345
6789101112
13141516171819
20212223242526
2728293031  

Most Recent Posts

 
%d bloggers like this: