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Scalability, Cost Savings, Easier Troubleshooting.

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Posted by waqqas1

http://netcert.tripod.com/ccna/internetworking/hierarch.html

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Posted by Hash007

-> The ability to separate logical components of an application ensures that applications are easy to manage.
-> Because communication can be controlled between each logical tier of an application, changes in one tier, for example, the database access tier, do not have to affect the client component tier, which would have to be redistributed if any changes are made to it.

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Posted by jahangir1983

-> The ability to separate logical components of an application ensures that applications are easy to manage.
-> Because communication can be controlled between each logical tier of an application, changes in one tier, for example, the database access tier, do not have to affect the client component tier, which would have to be redistributed if any changes are made to it.

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Posted by jahangir1983

-> The ability to separate logical components of an application ensures that applications are easy to manage.
-> Because communication can be controlled between each logical tier of an application, changes in one tier, for example, the database access tier, do not have to affect the client component tier, which would have to be redistributed if any changes are made to it.

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Posted by jahangir1983

# The ability to separate logical components of an application ensures that applications are easy to manage.
# Because communication can be controlled between each logical tier of an application, changes in one tier, for example, the database access tier, do not have to affect the client component tier, which would have to be redistributed if any changes are made to it.

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Posted by sagitraz

• Scalability— If we want to add users, it is easy to put an additional access layer device in place, without having to replace all the distribution and core devices at the same time. It is easier to add extended functionality to one layer at a time as needed instead of all at once.
• Cost Savings— An access layer device is much cheaper than a distribution or core device; also, by upgrading only one layer, we do not have to upgrade all three layers at once, incurring unnecessary costs.
• Easier Troubleshooting— If a component at one layer fails, it will not affect the entire system. It is also easier to find the problem if the failed device affects only one layer.

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Posted by griffinLincoln