Original subtitles

Various types of applications can affect the network performance

and network performance can also affect user experience of applications

Here are some network application types and points to consider

with regards to various applications that you may encounter

Applications such as File Transfer Protocol and Trivial File Transfer Protocol

or FTP and TFTP are considered Batch applications

Other types include Inventory Updates, File copies from within Windows

and Software downloads, these require little or no user interaction

Once a Batch application is started or file is downloaded using TFTP

no additional human intervention is required

the amount of bandwidth required by these applications varies

but typically applications such as TFTP and FTP

will grab as much bandwidth as they can

Bandwidth is important but not critical

and bandwidth available to the application can vary

As an example, if you have a high-speed Internet connection at home

you'll be able to download a file from the Internet a lot quicker

than if you have a slow Internet connection

Both downloads may use FTP, but FTP can handle a low download speed

It just takes longer for the application or file to be downloaded

Interactive applications such as Inventory Inquiries, Database updates

require more human intervention and these applications a user will

wait for a response and because of the human interaction

response time are more important but not as critical as real-time applications

The transactions will still be completed if the appropriate amount

of bandwidth is not available but it may take longer

In this example, a user may be using a work station in entering data

into the database running on a server, if the bandwidth is slow

the user may become impatient with the responses as they would take a lot

longer but the application may still continue working just at the slow speed

Real-time applications, however, such as voice and video require very good

quality of service and very low delay

This is used for human to human interaction and any type of delay

or latency will degrade the user experience dramatically

So timely delivery of data is critical

It's also important that no data is lost during transmission because real

time applications, unlike other applications, will not retransmit data

So it's important when designing networks for voice and video

that there'll be enough bandwidth and low delay

to allow a conversation to continue as expected

In a Corporate Environment when using a Voice over IP telephone system

you may need to implement Quality of Service to improve the users

experience when a network is very busy

So QOS and other mechanisms are used to protect voice and video traffic

from applications such as FTP and TFTP