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Various types of applications can affect the network performance
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and network performance can also affect user experience of applications
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Here are some network application types and points to consider
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with regards to various applications that you may encounter
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Applications such as File Transfer Protocol and Trivial File Transfer Protocol
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or FTP and TFTP are considered Batch applications
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Other types include Inventory Updates, File copies from within Windows
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and Software downloads, these require little or no user interaction
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Once a Batch application is started or file is downloaded using TFTP
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no additional human intervention is required
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the amount of bandwidth required by these applications varies
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but typically applications such as TFTP and FTP
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will grab as much bandwidth as they can
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Bandwidth is important but not critical
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and bandwidth available to the application can vary
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As an example, if you have a high-speed Internet connection at home
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you'll be able to download a file from the Internet a lot quicker
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than if you have a slow Internet connection
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Both downloads may use FTP, but FTP can handle a low download speed
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It just takes longer for the application or file to be downloaded
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Interactive applications such as Inventory Inquiries, Database updates
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require more human intervention and these applications a user will
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wait for a response and because of the human interaction
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response time are more important but not as critical as real-time applications
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The transactions will still be completed if the appropriate amount
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of bandwidth is not available but it may take longer
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In this example, a user may be using a work station in entering data
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into the database running on a server, if the bandwidth is slow
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the user may become impatient with the responses as they would take a lot
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longer but the application may still continue working just at the slow speed
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Real-time applications, however, such as voice and video require very good
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quality of service and very low delay
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This is used for human to human interaction and any type of delay
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or latency will degrade the user experience dramatically
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So timely delivery of data is critical
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It's also important that no data is lost during transmission because real
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time applications, unlike other applications, will not retransmit data
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So it's important when designing networks for voice and video
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that there'll be enough bandwidth and low delay
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to allow a conversation to continue as expected
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In a Corporate Environment when using a Voice over IP telephone system
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you may need to implement Quality of Service to improve the users
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experience when a network is very busy
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So QOS and other mechanisms are used to protect voice and video traffic
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from applications such as FTP and TFTP
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