INFO 3229 Quiz 1

transport

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

places all or almost all of the application logic on the client

A "thick client" architecture approach:

server farm

A ________ is a group of computers linked together so that they appear to act as one computer.

mainframe

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.

True

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.

physical

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?

False

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.

False

A request header for an HTTP request starts with a command, such as GET, and ends with the HTTP version number that the browser understands.

True

A server farm is a group of computers that are linked together so they act as a one computer.

intranet

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

extranet

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.

application architecture

A(n) __________ is the way in which the functions of the application layer software are spread among the clients and servers in the network.

protocol

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.

False

An application architecture is the way in which the functions of the application layer are performed solely by the clients in the network.

False

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

e-mail client

Another term for a mail user agent is

e-mail client

Another term for a mail user agent is:

False

As the demand for more and more network applications grow; host-based computing becomes the best solution.

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.

can use middleware to provide a standard way of communicating between software from more than one vendor

Client-server architectures:

True

Cloud-hosted virtual desktops are now available through a service called DaaS allowing users to access the same client computer (virtual desktop) from any computer and any location.

True

Data communication standards enable each layer in the sending computer to communicate with its corresponding layer in the receiving computer.

web server

Each server on a network that needs to act as a web server needs an application layer software package called a (n) ______________.

False

Host-based and client-based networks are similar in that the client computer performs most of the work.

the presentation logic is on the client, while the data storage and data access logic are on the server

How are the application architecture functions split up in a client-server network?

middleware

In a client-server network, _________ gets software from different vendors to work together.

True

In a client-server network, the presentation logic is the responsibility of the client computer.

mail user agent

In a two-tier client-server architecture, a client computer needs to use an application layer software package called a ________________ to send e-mail:

session, presentation and application

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

Hardware layer

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

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.

Network Layer

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

network layer

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

transport, data link

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

False

The earliest data communications networks were client-server networks.

True

The four general functions of any application program are: data storage, data access logic, application logic and presentation logic.

Tim Berners-Lee at the European Laboratory for Particle Physics (CERN) in 1989

The idea for a special hypertext network, called the World Wide Web, was conceived of by:

Simple Mail Transfer Protocol

The most commonly used e-mail standard is:

IP

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

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.

Mail transfer agent

The software that runs on the mail server is referred to as the ____________

False

The standard protocol for communication between a Web browser and a Web server is the web protocol.

specification, identification of choices and acceptance.

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

IaaS

With ______________, the cloud provider manages the hardware including servers, storage, and networking components. The organization is responsible for all the software, including operating system (and virtualization software), database software, and its applications and data.

all data on the server must travel to the client for processing

With a client-based network, one fundamental problem is that:

Experts believe that client server architectures can be complex, but that developing application software for host based architectures is usually cheaper.

With respect to costs for a client-server network, which of the following is true?

server

With the "thin client" architecture, when an application changes, only the _________ with the application logic needs to be updated.

presentation

With the two-tier client-server architecture, the client is responsible for the ________ logic.

presentation logic

________ is the presentation of information to the user and the acceptance of the user's commands.

data storage

_________ is an application program function that deals with storing and retrieving data.

Standards

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

True

Web-based e-mail like Hotmail is an example of three-tier client-server architecture that provides access to e-mail messages.

a browser-based approach

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

providing error-free transmission of data

Which is not a function of the physical layer:

providing error-free transmission of data.

Which is not a function of the physical layer:

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?

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

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

breaking long messages into several smaller messages

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

specifying the type of connection, and the electrical signals, radio waves, or light pulses that pass through it

Which of the following is not a function of the data link layer?

application access storage

Which of the following is not a general function by any application program?

T1

Which of the following is not an application layer standard?

They never evolve into de jure standards.

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

False

A "thin client" approach places most of the application logic on the client.

True

Middleware is the software that sits between the application software on the client and the application software on the server.

peer-to-peer network

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

Web browser

To interact with the World Wide Web, a client computer needs an application layer software package called a:

False

To use the Web, each client computer requires a data link layer software package called a Web browser.