Information Systems Test 3b
Card Set Information
Information Systems Test 3b
Communication Media are ______, _______ or ________ the create a path over which information travels in a network.
Analog signals are measured in ________.
Digital communication signals are measured in _______.
bps (bits per second)
A _________ converts digital to analog and vice versa.
A __________ communications signal is represented in binary.
___________ communication signals are represented as a continuous wave (sound, light, etc..)
Three types of wired media are:
______ _______copper wire technology is most commonly used for networks because of cost.
_______ ________ is more reliable than TWISTED PAIR, but also more costly. (Cable TV and internet).
Fiber optic is the highest speed line that carries signals by means of ________ _______ generated by _______.
Three major types of
_________ _________ are companies that provide data communications.
Infrared transmission uses an infrared _______ ________ and needs line of sight (wireless keyboards and mouse).
Microwaves are high frequency _________ _________ that travel in a _________ ________.
Each satellite rotates around earth at exactly earth's ________.
Satellites communicate with earth with _________ pointed at the satellite.
The _________ is the world's largest network which connects over 400,000 smaller networks in over 200 hundred countries.
The internet is commonly referred to as a "_________ of _________"
transmission lines that use the newest communications technology to transmit data across the internet.
A collection of modems and other equipment that allows you to connect to a network that is connected to the internet is called a ________.
POP (point of presence)
A __________ connects to the internet backbone.
NAP (Network Access Point)
_________ are private mini NAPS.
There are _______ main NAPS, which are heavily congested.
It takes these three things to connect to the internet:
Access Device ( like PC with modem)
Physical Connection (like telephone line)
Internet Service Provider (ISP)
A subset of the Internet which is a connection of servers that can store information in multimedia form is referred to as the _________ _______ ________.
World Wide Web
__________ networks are not on the World Wide Web.
The protocol used by all computers on the internet is ______________.
TCP/IP (Transmission Control Protocol/Internet Protocol)
_________ __________ are the wired or wireless means of connecting to the internet.
An expression of how much data can be sent through a communications channel in a given period of time is called ____________.
____________ is a very high speed connection.
Five major types of wired connections are:
telephone (dial up) modem
high speed phone lines (ISDN line)
Four major types of wireless connections are:
A telephone (dial up) connection is _______ user.
The slowest, but least expensive type of wired connection is ___________.
telephone (dial up)
________ on a phone line impacts speed.
High Speed (ISDN) phone lines use a combination of ___________ and ________ to ___________ the speed of standard dial up phone lines.
ISDN lines are ________ user.
A DSL line is _________ user.
DSL lines use a combination of software and hardware to make transmission speeds ____ to ___ times faster than standard dial up phone lines.
A T1 line is ___________ user.
A ________ line is expensive, but best for business.
A T1 line can be ____ to ______ times faster than standard dial up modem lines.
A cable modem is ________ user and a ________ connection.
A cable modem's incoming transmission can be ______ to ______ times faster than a standard dial up modem telephone line, but outgoing is only ______ times faster.
With a _______ ________, security can be an issue.
A ______ _______ may not always be available to businesses.
A _________ connection requires a dish to transmit and receive __________.
A ________ connection requires a device to be within a few hundred feet of the access point or "______ ______" and must have necessary _________. The access points are then connected to the internet.
3G uses an existing _______ _____ ______ (network) so it does not need _______ _______.
cell phone system
A _____ wireless connection is like wi-fi but access point can be 6 to 10 miles away.
____________ is the transmission of data from a remote computer to a local computer.
__________ is the transmission of data from a local computer to a remote computer.
A company or organization that connects you to the internet is called an ________.
ISP (Internet Service Provider)
4 types of FREE SERVICE PROVIDERS are:
Educational Institutions you are enrolled at.
A company that you work for.
Companies that want you to see their ads.
________ _________ providers are local companies that will sell you internet access with limited support.
3 basic types of ISPs are:
_________ _________ providers offer more reliable access and technical support.
_____ ________ uniquely identify every computer and other devices connected to the internet.
A cooperate of Universities and some other businesses that added faster communication lines which only they can use is referred to as ______ ___.
_______ _______ are the number one carrier of viruses.
In order to open an email attachment, a computer must have compatible ________.
__________ is a system that allows documents scattered across many Internet siteds to link together.
With hypertext, a ______ or _______ in one document becomes a connection to another document.
_______ is a set of special instructions that are used to specify document, structure, format and links to other documents.
HTML (Hypertext Markup Language)
A _______ is the
of a web domain name (in a computer) somewhere on the internet.
A _____ ______ is a
of the world wide web the may include text, pictures, sound and video.
The _______ ______ is a welcome page that identifies the site.
A _____ is a string of characters that points to a specific piece of information anywhere on the web. In other words, the website's _______ ________.
URL (Uniform Resource Locator)
scheme://domain:port/path?query_string#fragment_id is a type of _____.
URL (Uniform Resource Locator)
_______ are types of software that enable users to find and view web pages.
_____ _______ are gateway web sites that make using the internet easier. Yahoo, Netscape and AOL for example.
_________ __________ allow you to find a specific document through keyword searches and menu choices.
A _______-____ is a program that adds a certain feature to a browser
a certain file.
Adobe Acrobat would be one type of _____ -___.
___________ is when customized text, video and/or audio are sent to you automatically on a regular basis.
Web-casting (Push Technology)
Most _________ get in your computer through the internet when you download information, usually video, or open e-mail attachments.
__________ are programs that attach themselves to your hard drive and monitor every activity you perform on your computer.
Spyware that causes pop-ups to appear are called ___________.
__________ allows you to connect to a remote computer on the Internet and utilize all the services of the remote computer. (often used to connect to a mainframe).
Conducting business on the internet is termed ____________.
Worms and trojans are __________ of viruses.