1. What is Defense Data Network (DDN)?

The United States Department of Defense global communications network.

2. What is Alias?

A nickname that refers to a network resource.

3. What is DECnet?

A proprietary network protocol designed by Digital Equipment Corporation.

4. What is anonymous FTP?

This is a method of bypassing security checks when you logon to an FTP site. This is done by typing "anonymous" as your user ID and your e-mail address as the password.

5. What is ATM (Asynchronous Transfer Mode)?

A transfer mode that designates bandwidth using a fixed-size packet or cell. Also called a "fast packet".

6. Explain Authentication?

A method of identifying the user to make sure the user is who he says he is.

7. What is BBS (Bulletin Board System)?

A computer which provides file archives, email, and announcements of interest. Users usually dial in with a terminal program to access these.

8. What is Common Gateway Interface (CGI)?

The CGI is a communications protocol that Web servers use to communicate with other applications. Common Gateway Interface scripts allow Web servers to access database (among other things); CGI applications, on the other hand, receive data from servers and return data through the CGI.

9. What is DSL (Digital subscriber line)?

The DSL offers high-band width connections to small businesses and homes via regular telephone lines

10. What is E-mail?

E-mail stands for electronic mail. Most networks support some form of email. The most popular, of course, is Internet email. E-mail allows you to send text (such as a letter) to another person on another computer. In order to send an email, you have to know the email address of the recipient. Internet email addresses always start with the user's account name, then the at sign (@), then the name of the computer where the user gets his or her email. You can never have spaces in email or Web addresses. For example, my email address is: w@wdell.com

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11. Explain Firewall?

A firewall is a hardware and/or software boundary that prevents unauthorized users from accessing restricted files on a network.

12. Explain FTP (File Transfer Protocol)?

FTP's are the most widely used format to uploading and downloading files on an Internet connection. FTP's are used so computers can share files between each other.

13. Explain HTML (Hypertext Markup Language)?

HTML stands for Hypertext Markup Language. This is the standard method of publishing web documents onto the World Wide Web (WWW). HTML consists of tags surrounded by brackets.

14. What is IP Address (Internet Protocol Address)?

Each computer is assigned an IP address. These are similar to phone numbers. When you attempt to connect to an IP address, you will connect to the computer with that IP address.

15. What is ISDN (Integrated Services Digital Network)?

Integrated Services Digital Network (ISDN) combines digital network services and voice into one. Users can access digital services at 115,200 bps.

16. What is Intranet?

An intranet is a local area network(LAN), which may not be connected to the Internet but which has similar functions.

17. What is Listserv?

An automated mailing list distribution system.

18. What is MIME (Multipurpose Internet Mail Extensions)?

Multipurpose Internet Mail Extensions, or MIME, is the standard way to organize different file formats. For example, if you receive an e-mail, which is in a different format than yours, the file will be decoded so you can read it using MIME.

19. What is NFS (Network File System)?

A Network File System allows a computer to access and use files over a network, just as if it were a local network.

20. What is Network News Transfer Protocol (NNTP)?

A standard industry protocol for the inquiry, distribution, retrieval, and posting of news articles.

21. What is PING?

PING, is a simple way to time or test the response of an Internet connection.

22. What is PPP (Point-to-Point Protocol)?

A PPP is a protocol that provides a method for sending and receiving packets over serial point-to-point links.

23. What is URL rewriting?

Instead of storing a cookie value in the HTTP header of a request, the URL is rewritten to include a session parameter. URL rewriting might avoid cookies but it share the same set of potential problems just mentional above. Plus, with URL rewriting there are no static URLs in your Web-Enabled application, which often makes caching and indexing more difficult. Finally, every Web page needs to be dynamically generated so all hyperlinks include the session parameter.

24. What is SLIP (Serial Line Internet Protocol)?

A standard protocol which is used to run TCP/IP over a serial line.

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25. What is Subnet mask (Address Mask)?

This is used to recognize the sections of an IP address that concur with the different parts. Also known as the "subnet mask".