MISC Ch. 4 – Flashcards

Unlock all answers in this set

Unlock answers
question
telecommunications
answer
refers to the electronic transmission of signals for communications, by such means as telephone, radio, and television
question
telecommunications medium
answer
any material substance that carries an electronic signal to support communication between a sending and receiving device
question
speed
answer
an important characteristic of telecommunications is the ______ at which information is transmitted
question
channel bandwidth
answer
the rate at which data is exchanged, usually measured in bits per second
question
broadband communications
answer
a relative term but generally means a telecommunications system that can exchange data very quickly
question
broader
answer
the ______ the bandwidth the more information can be exchanged at one time
question
guided transmission media
answer
where communications signals are guided along a solid medium
question
wireless transmission media
answer
where communications signals is broadcast over airwaves as a form of electromagnetic radiation
question
twisted-pair wire
answer
twisted pairs of copper wire, shielded or unshielded
question
coaxial cable
answer
inner conductor wire surrounded by insulation
question
fiber optic cable
answer
many extremely thin stands of glass bound together in a sheathing, uses light beams to transmit signals
question
near field communication (NFC)
answer
a very short-range wireless connectivity technology designed for cell phones and credit cards
question
Bluetooth
answer
a wireless communications specification that describes how cell phones, computers, faxes, printers, and other electronic devices can be interconnected over distances of 10-30 feet at a rate of about 2mbps
question
ultra wideband (UWB)
answer
a form of short-range communications that employs extremely short electromagnetic pulses lasting just 50 to 1000 picoseconds that are transmitted across a broad range of radio frequencies of several gigahertz
question
microwave
answer
a high-frequency signal sent through the air
question
terrestrial microwaves
answer
transmitted by line-of-sight devices, so the line of sight between the transmitter and receiver must be unobstructed
question
wifi
answer
a medium range wireless telecommunications technology brand owned by the Wi-Fi Alliance
question
geostational satellite
answer
orbits the earth directly over the equator, approximately 22,300 miles above the earth, so that it appears stationary
question
low earth orbit (LEO) satellite
answer
employs many satellites, each in an orbit at an altitude of less than 1000 miles
question
very small aperture terminal (VSAT)
answer
a satellite ground station with a dish antenna smaller than 3 meters in diameter, provides internet access and local area network communications
question
long term evolution (LTE)
answer
a standard for wireless communications for mobile phones based on packet switching
question
WiMAX
answer
a 4G alternative based on a set of IEEE 802.16 wireless metropolitan area network standards that support various types of communications access
question
WiMAX
answer
operates like wifi but over greater distances and at faster transmission speeds
question
computer network
answer
the communications media, devices, and software needed to connect two or more computer systems or devices
question
personal area network (PAN)
answer
a network that supports the interconnection of info technology within a range of 33 feet or so
question
local area network (LAN)
answer
a network that connects computer systems and deices within a small area, such as an office, home, or several floors in a building
question
bluetooth
answer
the industry standard for PAN communications
question
metropolitan area network (MAN)
answer
a telecommunications network that connects users and their computers in a geographical area that spans a campus or a city
question
wide area network (WAN)
answer
a telecommunications network that connects large geographic regions
question
centralized processing
answer
an approach to processing wherein all processing occurs in a single location or facility
question
transborder dataflow
answer
WANs often provide communications across national borders, which involves national and international laws regulating the electronic flow of data across the international boundaries often called ________ _______
question
decentralized processing
answer
an approach to processing wherein processing devices are placed at various remote locations
question
distributed processing
answer
an approach to processing wherein processing devices are placed at remote locations but are connected to each other via a network
question
client/server architecture
answer
an approach to computing wherein multiple computer platforms are dedicated to special functions, such as database management, printing, communications, and program execution
question
electronic health record
answer
is a summary of health info generated by each patient encounter in a health care industry setting
question
network operating system (NOS)
answer
systems software that controls the computer systems and devices on a network and allows them to communicate with eachother
question
network management soft ware
answer
software that enables a manager on a networked desktop to monitor the used of individual computers and shared hardware (such as printers); scan for viruses; and ensure compliance with software licenses
question
ARPANET
answer
a project stated by the US department of defense in 1969 as both an experiment in reliable networking and a means to link the DoD and military research contractors, including many universities doing military-funded research
question
Internet protocol (IP)
answer
a communication standard that enables computers to route communications traffic from one network to another as needed
question
the nation lambdarail (NLR)
answer
a cross-country, high speed fiber optic network dedicated to research in high speed networking applications
question
network service providers (NSPs)
answer
large telecom companies are called ______
question
IP protocol
answer
the set of rules used to pass packets from one host to another is the ___ ______
question
IP adderess
answer
a 64-bit number that identifies a computer on the internet
question
uniform resource locator (URL)
answer
a web address that specifies the exact location of a web page using letters and words that map to an IP address and a location on the host
question
Hypertext transport protocol
answer
the primary method for interacting with the internet
question
ICANN
answer
responsible for managing IP addresses and internet domain names
question
Accredited domain name registrars
answer
ICANN used these companies to handle the business of registering domain names
question
internet service provider (ISP)
answer
any organization that provides internet access to people
question
dial up
answer
uses a modem and standard phone line to connect to the ISP server, slowest connection, original way to connect to internet in a home
question
Tim Berners-Lee
answer
developed the world wide web
question
web
answer
server and client software, the hypertext transfer protocol, standards, and mark-up languages that combine to deliver information and services over the internet
question
hyperlink
answer
highlighter text of graphics in a web document that, which clicked, opens a new web page containing related content
question
web browser
answer
web client software such as internet explorer, firefox, chrome, and safari are used to view webpages
question
plug ins
answer
help provide additional features to standard web sites
question
hypertext markup language
answer
the standard page description language for web pages
question
HTML tags
answer
codes that tell the web browser how to format text- as a heading, as a list, or as a body text- and whether images, sound, and other elements should be inserted
question
CSS
answer
HTML works hand in hand with another markup language called _____
question
Cascade style sheets
answer
has become a popular tool for designing groups of web pages
question
extensible markup language (XML)
answer
the markup language designed to transport and store data on the web
question
Java
answer
used to make web pages come alive, adding splashy graphics, animations, and real time updates
question
web services
answer
consist of standards and tools that streamline and simplify communication among web sites and that promise to revolutionize the way we develop and use the web for business and personal purposes
question
web development applications
answer
allow developers to create web sites using software that resembles a word processor
question
web hosting services
answer
provide space on their web servers for people and businesses that don't have the time, financial resources, or skills to host their own web sites
question
web 2.0
answer
the web as a computing platform that supports software applications and the sharing of information among users
question
rich internet applications (RIA)
answer
software that has the functionality and complexity of traditional application software but that does no require local installation and runs in a web browser
question
distance education
answer
conducting classes over the web with no physical class meetings is called ____
question
search engine
answer
a valuable tool that enables you to find information on the web by specifying words that are key to the topic of interest, known as keywords
question
spiders
answer
to help users get the information they want from the web, most search engines use an automated approach that scours the web with automated programs called _____
question
search engine optimization (SEO)
answer
a process for driving traffic to a web site by using techniques that improve the site's ranking in search results
question
web analytics software
answer
SEO professionals use ________ to study detailed statistics about visitors to their sites
question
crowd sourcing
answer
the Wiki approach to content development is referred to as ________ which uses the combined effort of many individuals to accomplish come task
question
web portal
answer
a web page that combines useful information and links and acts as an entry point to the web; portals typically include a search engine, a subject directory, daily headlines, and other items of interest.
question
instant messaging
answer
a method that allows two or more people to communicate online in real time using the internet
question
podcast
answer
an audio broadcast over the internet
question
web log (blog)
answer
a web site that people can create and use to write about their observations, experiences, and opinions on a wide range of topics
question
content streaming
answer
a methof for transferring large media files over the internet so that the data stream of voice and pictures plays more or less continuously as the file in being downloaded
question
global supply management (GSM)
answer
_____ online services provide methods for businesses to find the best deals on the global market for raw materials and supplies needed to manufacture their products
question
electronic exchanges
answer
provide an industry-specific web resource created to deliver a convenient centralized platform for B2B e-commerce among manufacturers, suppliers, and customers
question
mashups
answer
combined web applications are commonly referred to as a ______
question
geographic information systems (GIS)
answer
provide geographic information layered over a map
question
telnet
answer
a network protocol that enables users to log on to networks remotely over the internet
question
secure shell
answer
provides telnet functionality though a more secure connection
question
intranet
answer
a internal corporate network built using internet and world wide web standards and products
question
extranet
answer
a network based on web technologies that links selected resources of a company's intranet with its customers, suppliers, or other business partners
question
tunneling
answer
the process by which VPNs transfer info by encapsulating traffic in IP packets over the internet
question
private networks (VPN)
answer
secure intranets and extranets access applications usualy require the use of a __________, a secure connection between two points on the internet.
Get an explanation on any task
Get unstuck with the help of our AI assistant in seconds
New