ITN 100 Midterm Exam Questions And
Accurate Answers
What is the Internet and some things about it.
The internet is the information superhighway, the network of networks that spans the
world, linking more than 20 million users.
Net Neutrality.
For a given type of content (email, web, video, music) all content providers are treated
the same. Example would be all videos would be transmitted at the same speed
regardless of where they're from.
Telecommunications.
A term that covers voice, data, and image transmissions that are sent over some
medium in the form of coded signals.
Client.
The hardware device at the user's end of a communication circuit that provides for input
and output. The major categories of clients include the computer, terminal, and
special-purpose terminal.
LAN/WAN
Local Area Network - network that is in a small geographic area, such as an office, a
building, a complex of buildings or a campus and whose communication technology
provides a high-bandwidth, low-cost medium to which many nodes can be connected.
Wide Area Network - network that spans a large geographical area. Its nodes can span
city, state or national boundaries.
Server: What it is and Some Types.
A computer that provides a particular service to the client computers on the network.
, Types - file, database, network, access, modem, facsimile, printer, and gateway.
OSI Model - know the 5 layers, the directional flow, the protocols of each, and the basic
understanding of the model. You will be asked to draw it.
Protocol
Formal set of conventions governing the format and control of inputs and outputs
between two communicating devices such as handshaking and line discipline.
Standard
Required, it would appear, by practically every enterprise and public service. So that
hardware and software provided by different vendors can operate together.
Encapsulation
Method by which a gram from one network is encapsulated within the data field of the
frame in another network for transmission on the second network.
Some trends in Networking
Pervasive Networking, Integration of voice, video, and data, and new information
services. Of pervasive networking communication networks will someday be
everywhere, and virtually any device will be able to communicate with any other device
around the world. Integration of voice, video, and data, which is also called
convergence is a telecommunication system used to transmit video signals, voice
signals and data all in one network. Such well known services are Vonage and Skype.
The rise in these pervasive, integrated networks will mean a significant increase the
availability of information for the third trend, which is new information services.
List the 4 functions of the APP layer
The four basic functions are data storage, data access logic, application logic, and
presentation logic. The function of data storage requires data to be stored and retrieved
even though it's a small file created with word processor or a large database such as a
company's accounting records. Data access logic is the process required in accessing
data. Application logic, also called business logic, can be simple or complex. Then
there's presentation logic, which presents the user with information and the acceptance
of the user's commands.
List the 3 main types of app architectures and know which is best and most widely used.