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Information Technology Flashcards

(57 cards)

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1
Q

Open Source Principles

A

Free distribution and redistribution, source code availability, provisions for derived works

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2
Q

Examples of Open Source

A

Linux, OpenOffice, GIMP, Mozilla, Apache, MySQL

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3
Q

Examples of Proprietary

A

Windows, Microsoft Office, Photoshop, Internet Explorer, IIS, Oracle

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4
Q

3 Open Source Tech. major to internet

A

Linux, Apache, MySQL

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5
Q

Pros - open source

A

peer-reviewed code, dynamic community, rapid bug fixes, released by engineers

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6
Q

Cons -open source

A

dead-end software, fragmentation, developed by engineers, inability to point fingers

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7
Q

Open Source in LIS

A

used very frequently

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8
Q

Omeka

A

Omeka is a free, flexible, and open source web-publishing platform for the display of library, museum, archives, and scholarly collections and exhibitions.

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9
Q

Nvivo2.0

A

Nvivo is a QSR software that supports qualitative analysis. Using Nvivo facilitates content analysis and the search for frequencies and co-occurrences of codes and attributes.

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10
Q

Telecommunications

A

Electronic transmission of signals for communications

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11
Q

Telecommunications medium

A

material substance that carries an electronic signal to support communications between a sending and receiving device

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12
Q

synchronous communications

A

receiver gets message instantaneously

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13
Q

asynchronous communications

A

receiver gets message after some delay

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14
Q

simplex channel

A

transmits data in only one direction

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15
Q

half-duplex channel

A

transmits data in either direction but not simultaneously

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16
Q

full-duplex channel

A

permits data transmission in both directions at the same time

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17
Q

channel bandwidth

A

rate at which data is exchanged, measured in bits/sec

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18
Q

circuit switching network

A

sets up a circuit between the sender and receiver before any communications can occur

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19
Q

packet switching network

A

no fixed path is created between the communicating devices,

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20
Q

telecommunications media categories

A

guided transmission media and wireless

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21
Q

guided transmission media trypes

A

twisted pair wire, coaxial cable, fiber-optic cable

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22
Q

twisted-pair wire

A

classified by cateforey

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23
Q

coaxial cable

Study These Flashcards
A

offers cleaner and crisper data transmission (less noise) than twisted-pair wire

24
Q

fiber-optic cable

Study These Flashcards
A

transmits signals with light beams

25
wireless transmission
broadcast of communications in one of three frequency ranges
26
personal area network
support interconnection of information technology within a range of about 33 feet (bluetooth)
27
local area network (LAN)
connect computer systems and devices within a small area, e.g., office or home
28
metropolitan area network (MAN)
connect users and their devices in a geographical area that spans a campus or city
29
wide area network
connect large geographic areas
30
ethernet
main technology for local area networks, used for connecting all computers in a lab
31
channel
wire that = physical setup for an Ethernet network
32
router
variation of a LAN connection, physically connected to an ISP's modem, connected to the Internet, Capable of broadcasting and receiving signals
33
client
any computer that sends messages requesting services from the servers on the network
34
server
provider of a resource or service, e.g web server, printer, etc
35
the internet
made up of computers, network hardware, fiber-optic cables, software, and the TCP/IP protocols
36
point-to-point asynchronous communication
fast enough to mimic synchronous communication
37
ARPANET
ancestor of the internet, project started by the DOD in 1969
38
Backbone
Internet's high-speed, long distance communication links
39
Internet Protocol (IP)
Enables computers to route communications traffic from one network to anouther
40
Transmission Control Protocol (TCP)
Transport-layer protocol that most Internet applications use with IP
41
Uniform Resource Locator (URL)
an assigned address on the Internet for each computer
42
IP Address
A unique address, series of four numbers (one byte each), range of each of these numbers (0-255) allows for billions of IP addresses
43
top-level domain
.edu, .com, .org, .net, .mil, .gov
44
Ping
allows us to see if a computer on the network is available
45
trace route
displayes the route and transit delays of packets across an internet protocol
46
ISP
individual connections to internet via internet service provider
47
Enterprise network
larger network organization that connects to the Internet by a gateway
48
peering
two or more autonomous networks interconnect directly to exchange traffic (free)
49
transit
allowing network traffic to cross a computer network
50
cellular wide area network
base stations serve cells, land area served by cell towers
51
Wi-Fi
simply connecting to a Wi-Fi router in your home
52
"The Web"
consists of server and client software, the Hypertext Transfer Protocal (http), standards, mark-up languages that combine to deliver information and services over the Internet
53
Hypertext Transfer Protocol (HTTP)
a communication standard governing the requests and responses that take place between the web browser running on the end user's computer and the webserver
54
Three Parts of URL
Protocol, Server Computer's name, Page's pathname
55
URL Protcol
Tells computers how to handle the file
56
Server computer's name
name given by the domain hierarchy
57
Page's pathname
Tells server which file (page) is requested and where to find ti

Information Technology (2 decks)

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