Data communications and networking can be considered as a global area of study because: -
answera. new technologies and applications emerge from a variety of countries and spread around
the world
b. the technoogies enable gobal communication
Which of the following is not true about a server? -...
Data communications and networking can be considered as a global area of study because: -
answera. new technologies and applications emerge from a variety of countries and spread around
the world
b. the technologies enable global communication
Which of the following is not true about a server? - answerd. can only perform one function on a
network.
Networks that are designed to connect similar computers that share data and software with each
other are called: - answerb. peer-to-peer networks
The function of the file server is to : - answera. store data and software programs that can be used
by client computers on the network
A local area network is: - answerb. a group of personal computers or terminals located in the same
general area and connected by a common cable (communication circuit) so they can exchange
informationsuch as a set of rooms, a single building, or a set of well-connected buildings.
A backbone network is: - answera. a high speed central network that connects other networks in a
distance spanning up to several miles.
Which of the following is not a property of a WAN: - answerd. connects a group of computers in a
small geographic area such as room, floor, building or campus.
A(n) _________ is a LAN that uses the same technologies as the Internet but is open to only those
inside the organization. - answerd. intranet
A(n) _________ is a LAN that uses the same technologies as the Internet but is provided to invited
users outside the organization who access it over the Internet - answerc. extranet
Which layer of the OSI model is responsible for ensuring that all packets sent are received by the
destination station by dealing with end-to-end issues? - answerb. transport
Which layer of the OSI model is responsible for ensuring flow control so that the destination station
does not receive more packets that it can process at any given time? - answerb. transport
The ____________ layer of the OSI model is responsible for data format translation. - answerb.
presentation
The fourth layer of the OSI model is called the __________ layer. - answerb. transport
___________ is an orderly close to a dialogue between end users. - answera. Session termination
In the Internet model, the application layer corresponds to the ________ layer(s) of the OSI model. -
answerb. session, presentation and application
The _________ layer performs error checking which is redundant to some extent with the function
of the _________ layer. - answerc. transport, data link
Which is not a function of the physical layer: - answerc. providing error-free transmission of data.
The _________ layer is responsible for routing of messages from the sender to the final destination.
- answerd. network layer
Which of the following is not a function of the data link layer? - answerd. specifying the type of
connection, and the electrical signals, radio waves, or light pulses that pass through it
Which of the following is a function of the transport layer? - answerd. breaking long messages into
several smaller messages
A(n) __________ is the way in which the functions of the application layer software are spread
among the clients and servers in the network. - answerd. application architecture
A ________ is a very large general-purpose computer that is capable of performing very many
functions as if these are done simultaneously, and storing extremely large amounts of data. -
answerd. mainframe
A ________ is a group of computers linked together so that they act as one computer. - answerc.
server farm
With the two-tier client-server architecture, the server is responsible for the ________ logic. -
answerc. data access
Which of the following is not a general function by any application program? - answere. application
access storage
_________ is an application program function that deals with storing and retrieving data. - answera.
data storage
An application program function is __________, or the processing required to access data. -
answerb. data access logic
______________, or the algorithms or business logic programmed into the application, can be
simple or complex depending on the application. - answerc. application logic
________ is the presentation of information to the user and the acceptance of the user's commands.
- answerd. presentation logic
One underlying problem with a host-based network is that: - answerb. the server can get overloaded
since it must process all messages
With a client-based network, one fundamental problem is that: - answerd. all data on the server
must travel to the client for processing
With the two-tier client-server architecture, the client is responsible for the ________ logic. -
answerb. presentation
Client-server architectures: - answerc. can use middleware to provide a standard way of
communicating between software from more than one vendor
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