ITN 100 Final UPDATED ACTUAL Exam
Questions and CORRECT Answers
According to John Chambers, CEO of Cisco (a leading technology company), the
information age is the second Industrial Revolution - CORRECT ANSWER✔✔- True
Due to recent advances in high speed communications networks, the information lag, or the
time time it takes for information to be disseminated around the world, has been significantly
shortened - CORRECT ANSWER✔✔- True
One perspective of data communications and networking as stated in the textbook examines
the management of networking technologies, including security, network design, and
managing the network on a day-to-day basis - CORRECT ANSWER✔✔- True
An inter-exchange carrier (IXC) provides only local telephone services to homes and
businesses - CORRECT ANSWER✔✔- False, long-distance services
The Internet was started by the US DOD in 1969 as a network of four computers called
ARPANET - CORRECT ANSWER✔✔- True
The OSI model is the most widely used network model to develop and building networks
today - CORRECT ANSWER✔✔- True
An intranet is a LAN that uses Internet technologies and is publicly available to people
outside of the organization - CORRECT ANSWER✔✔- False, Privately available to people
inside the organization
At the transport layer in the Internet model, TCP is responsible for breaking large files
received from the application layer into smaller packets and opening a connection to the
server for the packets - CORRECT ANSWER✔✔- True
Data communications standards enable each layer in the sending computer to communicate
with its corresponding layer in the receiving computer - CORRECT ANSWER✔✔- True
,American National Standards Institute (ANSI) is the coordinating organization for United
States (not a standards-making body). ANSI is a voting participant in the ISO. - CORRECT
ANSWER✔✔- True
In 1874, Alexander Graham Bell developed the concept for the telephone - CORRECT
ANSWER✔✔- True
The Internet has always been open to commercial traffic - CORRECT ANSWER✔✔- False,
not until the 1990s
Data communications and networking can be considered as a global area of study because
new technologies and applications emerge from a variety of countries and spread around the
world and it concerns the technologies that enable global communication - CORRECT
ANSWER✔✔- True
Modern (1990s and beyond) data communication networks are characterized by distributed
systems that rely heavily on networking - CORRECT ANSWER✔✔- True
Modern (1990s) data communication networks are characterized by a deck of punch cards -
CORRECT ANSWER✔✔- False
A server can store data and software that can be accessed by the client - CORRECT
ANSWER✔✔- True
A server is/can be the pathway through which messages travel - CORRECT ANSWER✔✔-
True
A server can perform only one function - CORRECT ANSWER✔✔- False
A backbone network is a high speed central network that connects other networks in a
distance spanning up to several miles - CORRECT ANSWER✔✔- True
Networks that are designed to connect similar computers that share data and software with
each other are called peer-to-peer networks - CORRECT ANSWER✔✔- True
,A local area network (LAN) is a network spanning a large geographical area (up to 1000s of
miles) - CORRECT ANSWER✔✔- False, it is a small location
The network layer (layer 3) is responsible for making routing decision and routing of
messages from the sender to the final destination - CORRECT ANSWER✔✔- True
The presentation layer of the OSI model is responsible for ensuring that all packets sent are
received by the destination station and dealing with end-to-end issues - CORRECT
ANSWER✔✔- False, Transport layer
The transport layer of the OSI model is responsible for ensuring all packets sent are received
by the destination station by dealing with end-to-end issues - CORRECT ANSWER✔✔-
True
Wireshark is one of the world's foremost network protocol analyzers and it is the standard
that most professional and educational institutions use today - CORRECT ANSWER✔✔-
True
The four general functions of any application program are data storage, data access logic,
application logic, and presentation logic - CORRECT ANSWER✔✔- True
A network computer is designed primarily to communicate using Internet based standards,
but has no hard disk. It has only limited functionality - CORRECT ANSWER✔✔- True
There are four kinds of applications architectures. They are host-based architecture (server
performs almost all functions), client-based architectures (client performs most functions),
client-server architecture (functions shared between client and server), and peer-to-peer. We
will not consider the cloud architecture. - CORRECT ANSWER✔✔- True
As the demand for more and more network applications grow; host-based computer is the
best solution - CORRECT ANSWER✔✔- False, client-server
The fundamental problem in client-based networks is that all data on the server must travel to
the client for processing - CORRECT ANSWER✔✔- True
, One major advantage to a client-server network lies in the fact that client-server networks
enable software and hardware from different vendors to be used together - CORRECT
ANSWER✔✔- True
Advantages of the client-server architecture is that they are more efficient because of
distributed processing and they allow hardware and software from different vendors to be
used together. In addition, they enable cloud computing - CORRECT ANSWER✔✔- True
Functions of application layer are four functions: 1. data storage - storing of data generated
by programs 2. data access logic - processing required to access stored data 3. application
logic - business logic such as word processors, spreadsheets, and 4. circuit logic - connecting
the wires - CORRECT ANSWER✔✔- False, presentation logic, not circuit logic
In the 3-tier architecture, the software on the client computer is responsible for presentation
logic - CORRECT ANSWER✔✔- True
Scalability refers to the ability to increase or decrease the capacity of the computing
infrastructure in response to changing capacity needs - CORRECT ANSWER✔✔- True
In P2P architectures all computers can server as a client and a server. They have increased
popularity in the last decade due to the rise of P2P services such as Napster. Their advantages
are that data can be stored anywhere on the network, and they are very resilient to failure.
Disadvantages are finding the data and security - CORRECT ANSWER✔✔- True
The three criteria for choosing an architecture are 1. Infrastructure cost (cost of servers,
clients, and circuits and knowing that mainframes are expensive), 2. Development cost
(mainly cost of software development which is expensive to develop, but off-the-shelf
software is relatively inexpensive), and 3. airfaire cost, which is high - CORRECT
ANSWER✔✔- False,
Application layer examples are the World wide web, email, file transfer, videoconferencing,
and instant messaging - CORRECT ANSWER✔✔- True
Marc Andressen led a team that developed the first graphical Web browser, Google Chrome -
CORRECT ANSWER✔✔- False, Mosaic
