IT Chapter 2 Review

Bps, Kbps, Mbps, and Gbps
today’s data transmission speeds are measured in…
Cable Modem
connects a personal computer to a cable-TV system that offers an internet connection
Communications Satellite
a space station that transmits data as microwave
ISP
a company that connects you through your communications connection to its server, which connects you to the internet
Window
a rectangular area on the computer screen that contains a document or displays an activity
Flaming
writing an online message that uses derogatory, obscene, or inappropriate language
Showrooming
browsing for products in stores but buying them from an online rival and frequently at a lower price
Web browser
software that enables users to view web pages and to jump from one page to another
Website
a computer with a domain name
Protocol
compromises the communications rules that allow browsers to connect with web servers
Bandwidth
the expression of how much data–text, voice, video, and so on– can be sent through a communications channel in a given amount of time
URL
a string of characters that points to a specific piece of information somewhere on the web
Kbps means how many bits per second?
one thousand
Domain
a location on the Internet
User ID
In the email address [email protected], Kim_Lee is the…
c. name of the browser
Which of the following is not one of the four components of a URL?
a. web protocol
b. name of the web server
c. name of the browser
d. name of the directory on the web server
e. name of the file within the directory
d. T1 line
Which of the following is the fastest method of data transmission?
a. ISDN
b. DSL
c. modem
d. T1 line
e. cable modem
POP3
protocol used to retrieve email messages from the server to your computer
No one
Who owns the Internet?
IP Address
new address assigned to your computer each time you connect you connect your ISP
NAP
used to connect to an internet backbone for ISPs that don’t run their own backbones
b. IE
Which of the following is not a protocol?
a. TCP/IP
b. IE
c. HTTP
d. SMTP
False; its reverse
True/False

POP3 is used for sending email, and SMTP is used for retrieving email

False; companies that link online users to server
True/False

A dial-up modem us an ISP

False; domain names
True/False

The Internet Corporation for Assigned Names and Numbers (ICANN) was established to assign IP addresses

False; they can use different bandwidth
True/False

All computer communication use the same bandwidth

Dial-up
the slowest but cheapest form of internet connection
False
True/False

A dynamic IP address gives you faster Internet access than a static IP address does

True
True/False

A bookmark lets you return to a favorite website quickly

True
True/False

A server is also called a host computer

False
True/False

Radio buttons are used for listening to radio stations on the internet

False
True/False

Hypertext refers to text presented with very large letters

Name three methods of data transmission that are faster than a dial-up connection
DSL, cable modem, satellite, T1/T3, radio waves
Briefly define bandwidth
refers to how much data—text, voice, video, and so on—can be sent through a communications channel in a given amount of time. Different communications systems use different bandwidths for different purposes. The wider the bandwidth, the faster data can be transmitted.
Many web documents are “linked.” What does that mean?
Whereas with email you can connect only with specific addresses you know about, with the Web you have hypertext, a system in which documents scattered across many Internet sites are directly linked, so that a word or phrase in one document becomes a connection to a document in a different place. Links are indicated by underlining or highlighting. If the user clicks on the link, he or she is taken to another document or website.
Compare and contrast a cable modem service to a DSL service
A cable modem connects a computer to the Internet via a cable-TV system. DSL (digital subscriber line) uses special hardware and software to transmit data over regular phone lines. DSL is faster than standard data transmission over regular phone lines, and cable modem transmission is faster than DSL.
Explain the basics of how the Internet works
The Internet is a worldwide computer network that connects hundreds of thousands of smaller networks. No one owns the Internet; its components are owned and shared by thousands of private and public entities. When you use your personal computer at home, you connect to the Internet via your local loop, over telephone wires or cable. The local loop connects you to your Internet service provider (ISP), whose headquarters can be almost anywhere but who provides local points-of-presence (POPs) around the country, so users don’t have to pay long-distance charges to connect. The POP acts as a local gateway to the ISP’s network. The ISP functions as an interface between you and the rest of the Internet. Some ISPs have their own high-speed backbones to transmit data; others lease backbone connections (Internet Exchange Points, or IXPs) through network service providers (NSPs) run by major communications companies. Each time you connect to the Internet, your ISP assigns you a temporary Internet protocol (IP) address, so that your location can be identified (to enable data transmission to your computer). The protocol, or set of standards, or rules, that enables all computers to use data transmitted on the Internet is TCP/IP (Transmission Control Protocol/Internet Protocol).
Although no one owns the Internet, everyone on the net adheres to standards overseen by ISOC (Internet Society). ICANN (Internet Corporation for Assigned Names and Numbers) regulates Internet domain names.
What expanded functions does IMAP (Internet Message Access Protocol) have?
IMAP (Internet Message Access Protocol) offers expanded functions compared to POP3 (Post Office Protocol version 3) for retrieving email; for example, with IMAP one can search through email messages while they are still on the ISP’s server—before one downloads them.
Briefly explain what TCP/IP does
IP is used to send the packets across the internet to their final destination
TCP is used to reassemble the packets in the correct order
Why was ICANN established?
To regulate human friendly internet domain names (.com, .org, .net), that overlie IP addresses and identify the website type
What’s the difference between a dynamic IP address and a static IP address?
Dynamic IP addresses is an IP address that will change everytime you connect to internet
Static IP addresses is an IP address that will remain the same every time you connect to the internet
Explain what a blog is.
Short for web blog; an internet journal
State your answer to a person who asks you the question, “Who owns the Internet?”
Nobody owns the internet, we the user of the internet owns it our self
What is B2B commerce?
Electronic sale or exchange of goods and services directly between, cutting out traditional intermediaries