Key Terms

1. Define the term - Protocol

The established code of procedure or behavior in any group, organization, or situation.

    2. What are the following protocols used for?

TCP/IP - The Internet Protocol Suite is the set of communications protocols used for the Internet and other similar networks

http - Hypertext Transfer (or Transport) Protocol, the data transfer protocol used on the World Wide Web.

smtp - Simple mail transfer protocol, a data transmission format used to send and receive e-mail

pop  - For wireless, POPs generally refers to the number of people in a specific area where wireless services are available (the population).

FTP - File transfer protocol, a standard for the exchange of program and data files across a network

3. What does GUI stand for? What was used before GUI?

Graphical user interface

      4. There are two methods of data transmission – serial and parallel. Explain the difference between them.

     5.Define the term “URL”. Explain the components that make up the url.

Uniform (or universal) resource locator, the address of a World Wide Web page.

A scheme. The scheme identifies the protocol to be used to access the resource on the Internet. It can be HTTP (without SSL) or HTTPS (with SSL).

A host. The host name identifies the host that holds the resource. For example, www.example.com. A server provides services in the name of the host, but there is not a one-to-one mapping between hosts and servers. Host names explains more about host names.

Host names can also be followed by a port number. Port numbers explains more about these. Well-known port numbers for a service are normally omitted from the URL. Most servers use the well-known port numbers for HTTP and HTTPS , so most HTTP URLs omit the port number.

A path. The path identifies the specific resource within the host that the Web client wants to access. For example, /software/htp/cics/index.html.

A query string. If a query string is used, it follows the path component, and provides a string of information that the resource can use for some purpose (for example, as parameters for a search or as data to be processed). The query string is usually a string of name and value pairs, for example, q=bluebird.

http://publib.boulder.ibm.com/infocenter/cicsts/v3r1/index.jsp?topic=%2Fcom.ibm.cics.ts31.doc%2Fdfhtl%2Ftopics%2Fdfhtl_uricomp.htm

     6.In the context of data transmission, what is “error detection”?

    7.Why would error detection be important for the internet

    8.Name and explain one common method of error detection.

    9.What is HTML and explain why it is important

Hypertext Markup Language is a standardized system for tagging text files to achieve font, color, graphic, and hyperlink effects on World Wide Web pages