INTRO TO WEB Flashcards

(69 cards)

1
Q

is a device for transmitting and receiving messages over long distances.

A

Telegraph

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2
Q

To be able to send message as quickly as possible

A

internet

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3
Q

the three 1st technology

A

telephone, telegraph, radio

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4
Q

calls were routed through operators who physically connected caller and receiver by connecting a wire to a switchboard to complete a circuit.

A

telephone networks

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5
Q

One of the weaknesses of having a physical connection is that you must establish a – and maintain a dedicated circuit for the duration of the call. This type of network connection is sometimes referred to as –

A

link , circuit switching

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6
Q

internet can be difficult to have multiple conversations –

A

simultaneously

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7
Q

internet requires more –, since even the silences are –

A

bandwidth, transmitted

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8
Q

ARPANET was created in

A

1960s

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9
Q

ARPANET did not use circuit switching but instead used an alternative communications method called –

A

packet switching

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10
Q

X.25 is created in

A

1974

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11
Q

USENET is created in

A

1978

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12
Q

To promote the growth and unification of the disparate networks, a suite of –was invented to unify the
networks.

A

protocols

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13
Q

is the name given to a formal set of publicly available rules that manage data exchange between two points.

A

protocol

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14
Q

allow any two computers to talk to one another, so long as they implement the protocol.

A

Communications protocols

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15
Q

on 1981, New networks built in the United States began to adopt the –

A

TCP/IP

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15
Q

protocols for the Internet were published and ready for use.

A

1981

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16
Q

on – TCP/IP was adopted across all of ARPANET.

A

January 1, 1983

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17
Q

TCP/IP networking was adopted across the globe.

A

2003

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18
Q

in – and –, email and text-based systems were dominant

A

Late 1980s and early 1990s

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19
Q

web inventor and founding director of the WWW foundation

A

Tim Berners-Lee & Robert Cailliau

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20
Q

Essential Elements of Early Web

A

Uniform Resource Locator (URL)
Hypertext Transfer Protocol (HTTP)
software program/ web server
Hypertext Markup Language (HTML)
Browser

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21
Q

can make HTTP requests to URLs and that can display the HTML it receives.

A

browser

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22
Q

to uniquely identify a resource on the WWW.

A

niform Resource Locator (URL)

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23
Q

to describe how requests and responses operate.

A

Hypertext Transfer Protocol (HTTP)

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24
can respond to HTTP requests.
software program/ web server
25
to publish documents.
Hypertext Markup Language (HTML)
26
mosaic is released in -- by -- and --
1993 by Eric Bina and Marc Andreessen
27
is released in late 1994 cofounded by Marc Andreessen
Netscape Navigator
28
is released in 1995 by Microsoft Edge and became the market leader.
Internet Explorer
29
In late 1994, Berners-Lee helped found the --
World Wide Web Consortium (W3C)
30
is the international standards organization that oversee the growth of the web.
W3C
31
refers to an internal network using Internet protocols that is local to an organization or business
Intranet
32
intranet resources are often --
private
33
intranet uses the -- such as TCP/IP
internet protocols
34
intranet accessible via the --
web browser
35
Consists only of HTML pages that always look identical for all users
Static Website
36
Static Website users could read the pages but could not provide --.
feedback
37
Dynamic server-side website read content from -- and -- with existing enterprise computer systems
databases, Interface
38
Dynamic server-side website communicate with -- institutions and -- HTML that is sent to user’s browsers
financial , output
39
THREE WEB MODELS
Client-Server Model The Request – Response Loop The Peer-to-Peer Model
40
is a computer agent that active 24/7, listening for requests from clients.
SERVER
40
a computer agent that makes requests and receives responses from the server, in the form of response codes, images, text files, and other data
CLIENT
41
Is the most basic mechanism on the server for receiving requests and transmitting data in response.
The Request – Response Loop
42
In The Request – Response Loop, The client initiates a request to a server and gets a -- that could include some resource like an --, an image, or some other data
response , HTML file
43
Each computer is functionally identical and each node can send and receive data directly with one another.
The Peer-to-Peer Model
44
in The Peer-to-Peer Model, each peer acts as both a -- and -- and video chat and bit torrent protocols and examples
client and server
45
Server Types
web server application server database server mail server media server/ streaming server authentication server
46
is a computer servicing HTTP requests.
web server
47
is a computer that hosts and executes web applications.
application server
48
is a computer that is devoted to running a Database Management System (DBMS), such as MySQL
database server
49
is a computer creating and satisfying mail requests, typically using the Simple Mail Transfer Protocol (SMTP).
mail server
50
is a special type of server dedicated to servicing requests for images and videos.
media server
51
handles the most common security needs of web applications
authentication server
52
distribute incoming requests between clusters of machines so that any given web or data server is not excessively overloaded.
Server Farm
53
distribute incoming requests to available machines
load balancers
54
Server farms are typically housed in special facilities called --
data centers.
54
A typical server farm will consist of many --, each containing many servers
server racks
55
contains computers and hard drives; sophisticated air conditioning systems; redundancy power systems using batteries and generators; specialized fire suppression systems; and security personnel are all part of a typical data center
data center
56
Working in Web Development
Tester/Quality Assurance Business Analyst Nontechnical Roles Software Engineer System Administrator
57
Types of Web Development Companies
Hosting Companies Design Companies Website Solution Companies Start-Up Companies Internal Web Development Vertically integrated companies
58
is defined as a type of network that relies on a physical connection between two distinct network nodes, which requires the link to be set up before the nodes can communicate. 
circuit-switched network
59
Before sending data across, the network ensures a patent, free and available path between the nodes in the network, joining the sender and receiving device.
Establishment of the circuit
60
data of any type, voice, data, analog or digital, is then sent across
Transfer of data:
61
After the data transfer, the circuit ends so that the bandwidth becomes available for other use.  
Disconnection
62
 Circuit switching is commonly used in -- communication and some types of data communication.
voice
63
is a set of rules for formatting and processing data
protocol
64
is a measurement of how much data can (maximally) be transmitted along a communication channel
Bandwidth
65
In networking, a protocol is a set of rules for -- and processing data.
formatting
66