Chapter 2 Flashcards
During the innovation phase (1961 – 1974), the internets purpose was to …..
Link Researchers nationwide via computer
During the Institutional Phase (1975-1995), the department of Defense and National Science foundation provided …
Funding to expand the building blocks of the internet into a complex military communication system and then into a civilian system
During the Commercialization Phase (1995- present), government agencies….
Encouraged corporations to assume the responsibility for future expansion
The three technology components behind the internet are…
Packet Switching
TCP/IP
Client/Server technology
Packet Switching
– slices digital messages into packets, routes the packets along different communication paths as they become available and then reassembles the packets once they arrive at there destination
TCP/IP -
core communication protocol for the internet. TCP establishes connections among receiving and sending. Web computers make sure their packets sent by one computer are received in the same sequence
IP -
provides the addressing scheme and is responsible for the actual delivery of the packets
Client/Server Technology -
makes it possible for large amount of information to be stored on web servers and shared with individual users on their client computers
The primary platform that access the internet is …
the mobile platform, the number of cellphone subscribers exceeds the number of PC owners!
HTTP delivers…
the requested web pages, allowing users to view them in other words is the protocol used to transmit web pages over the internet
SMTP and POP enable email to be…
routed to a mail server and then picked up by the recipients server
IMAP enables email to …
be sorted before being downloaded by the recipient
SSL and TLS ensure that…
information transmissions are encrypted
FTP is used to transfer …
files from servers to clients and vice versa
Telnet is a utility program that …
enables work to be done remotely
Ping is a…
utility program that allows users to verify a connection between client and server
Tracert lets you track the….
Route a message takes from a client to a remote computer
SMTP, POP, IMAP, SSL, TLS and FTP are all examples of …
Internet protocols
The backbone of the internet is…
composed primarily of high bandwidth fiber-optic cable operated by a variety of providers
IXPs are…
hubs that use high speed switching computers to connect the backbone with regional and local networks
CAN’s are …
local area networks operating within a single organization that connect directly to regional networks and local networks
ISP , also known as Internet service providers …
deal with the “last mile” of service to homes and offices.
Governing bodies such as IAB, ICANN, IESG, IETF etc do not control the internet but…
have influence over it and monitor its operations
What are 5 limitations of today’s internet?….
Bandwidth limitations, Quality of service limitations, Network architecture limitations, language development limitations, limitations arising from the “wired” nature of the internet
Quality of service limitations
data packets not arriving in the correct order causing latency
Network architecture limitations
servers cannot keep up with demand
Language development limitations –
– the nature of HTML restricts the quality of “Rich” information that can be shared online.
Limitations arising from the “wired” nature of the internet …
the internet is based on primarily on physical cables which restricts the mobility of users
What are some potential capabilities of the future internet?
– improvements to fiber optic, improvements in LAN and 4G tech, increase in bandwidth – all increasing internet speed as well
In 1993, Marc Andreessen created the first…
geographical web browser which makes it possible to view documents on the web anywhere!
Hypertext
a way of formatting pages with embedded links that connect documents to one another
XML
newer markup language that allows designers to describe data and information
