Some of the
most common databases used in enterprises today are Oracle and Microsoft SQL
Server.
10 Chapter 1: Building a Simple Network
The Impact of User Applications on the Network
The key to user applications is that they enable users to be connected to one another through
the various types of software. As a business begins to rely on these applications as part of
the day-to-day business process, the network that the applications operate in becomes a
critical part of the business. A special relationship exists between these applications and the
network. The applications can affect network performance, and network performance can
affect applications. Therefore, you need to understand some common interactions between
user applications and the network. Figure 1-5 characterizes some of the interactions for
different types of applications.
Figure 1-5 Application Interaction
Historically, when the interaction between the network and the applications that ran on the
network was considered, bandwidth was the main concern. Batch applications such as FTP,
TFTP, and inventory updates, which simply used the network to transfer bulk data between
systems, would be initiated by a user and then run to completion by the software with no
further direct human interaction.
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