CIS 4348 Chapter 1

A backbone network is:

a high speed central network that connects other networks in a distance spanning up to several miles.

A(n) _________ is a LAN that uses the same technologies as the Internet but is open to only those inside the organization.

intranet

Which of the following correctly represents order of the seven layers of the OSI model from layer 1 to layer 7?

physical, data link, network, transport, session, presentation, application

The application layer is the seventh layer of the Internet model and specifies the type of connection and the electrical signals that pass through it. (True or False)

False

Which of the following is true about ISO:

All of the above

BYOD stands for

Bring Your Own Device

A local area network (LAN) connects other LANs and backbone networks (BNs) located in different areas to each other and to wide area networks in a span from 3 to 30 miles. (True or False)

False

An intranet is a LAN that uses Internet technologies and is publicly available to people outside of the organization.

False

An intranet is a LAN that uses Internet technologies and is publicly available to people outside of the organization. (True or False)

False

The OSI model is currently the most widely implemented network model used to develop and build networks of any size, including the Internet itself. (True or False)

False

Taken together, the physical and data link layers are called the ____________________.

Hardware layer

Which standards body is responsible for the development of local area network (LAN) standards?

IEEE

Which of the following is not true about ITU-T:

Its membership is limited to U.S. telephone companies

In the OSI model, the application layer provides a set of utilities for applications and is the end user's access to the network.

True

When a user accesses an application via a web browser on their mobile device, this is referred to as

a browser-based approach

The _________ layer is responsible for routing of messages from the sender to the final destination.

network layer

A(n) _____________ is a set of rules that determine what a layer would do and provides a clearly defined set of messages that software at the layer needs to understand.

protocol

Which is not a function of the physical layer:

providing error-free transmission of data.

The _________ layer performs error checking which is redundant to some extent with the function of the _________ layer.

transport, data link

Which of the following is not an application layer standard?

T1

A car manufacturer may give access to certain portions of its network to some of its suppliers via the Internet. This is an example of an extranet. (True or False)

True

ANSI is a voting participant in the ISO.

True

According to John Chambers, CEO of Cisco (a leading networking technology company), the information age is the second Industrial Revolution (True or False)

True

At the transport layer in the Internet model, TCP is responsible for breaking large files received from the application layer into smaller messages and opening a connection to a server for transferring them. (True or False)

True

Data communication standards enable each layer in the sending computer to communicate with its corresponding layer in the receiving computer. (True or False)

True

Due to advances in high speed communication networks, the information lag, or the time it takes for information to be disseminated around the world, has been significantly shortened. (True or False)

True

In the OSI model, the application layer provides a set of utilities for applications and is the end user's access to the network. (True or False)

True

It is not uncommon for companies to end up spending more money on network management and security tasks than they do on the actual computer equipment itself. (True or False)

True

Telecommunications is the transmission of voice and video as well as data and usually implies transmitting a longer distance than in a data communication network. (True or False)

True

The network layer performs the same functions in both the OSI and Internet models and is responsible for routing messages from the source computer to the destination computer. (True or False)

True

The specification stage of the de jure standardization process consists of developing nomenclature and identifying the problems to be addressed. (True or False)

True

Data communications and networking can be considered as a global area of study because:

a and b A. a. new technologies and applications emerge from a variety of countries and spread around the world B. b. the technologies enable global communication

Ethernet is an example of a network layer protocol.

False

Ethernet is an example of a network layer protocol. (True or False)

False

__________ ensure that hardware and software produced by different vendors work together.

Standards

A junior network administrator has used the wrong cable type to connect his/her computer to the administrative port on a router and cannot establish a terminal session with the device. What layer of the Internet model does this problem appear to reside at?

Physical

___________ is an orderly close to a dialogue between end users.

Session termination

Which of the following is not true about de jure standards?

They are always developed before de facto standards.

The ____________ layer of the OSI model is responsible for data format translation.

presentation

The fourth layer of the OSI model is called the __________ layer.

transport

Which of the following would be a standard or protocol used at the Data Link layer of the Internet or OSI model?

Ethernet

The network layer of the Internet model uses the _____________ protocol to route messages though the network.

IP

Which of the following is not true about de facto standards?

a. They never evolve into de jure standards.

A network administrator has received several reports from users of the network that the intranet website on one of company servers is not accessible, but the same users are still able to retrieve their email being stored on the same server. What layer of the Internet model does this problem appear to reside at?

application

In which layer of the Internet model would the HTTP protocol be used?

application

Which of the following is a function of the transport layer?

breaking long messages into several smaller messages

Which of the following is not true about a server?

can only perform one function on a network.

A _____________ is the input-output hardware device at the end user's end of a communication circuit in a client-server network.

client

Which of the following is not a property of a WAN:

connects a group of computers in a small geographic area such as room, floor, building or campus.

Which of the following is not an important future trend in communication and networking?

development of online batch systems

The primary reason for networking standards is to:

ensure that hardware and software produced by different vendors can work together

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.

extranet

A(n) ___________ is similar to an intranet in that it uses Internet technologies, but is developed for users outside the organization.

extranet

The American National Standards Institute:

is the coordinating organization for the United States' national system of standards

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 information such as a set of rooms, a single building, or a set of well-connected buildings.

local area network

A MOOC is an example of a(n)

massively online technology

Networks that are designed to connect similar computers that share data and software with each other are called:

peer-to-peer networks

In the Internet model, the application layer corresponds to the ________ layer(s) of the OSI model.

session, presentation and application

The three stages of the de jure standardization process are ______________________.

specification, identification of choices and acceptance.

The function of the file server is to :

store data and software programs that can be used by client computers on the network.

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?

transport