Big E Bank Case Study

Question 4
Case I. Big E. Bank
Nancy Smith is the director of network infrastructure for Big E. Bank (BEB). BEB has just purchased Ohio Bank (OB), a small regional bank that has 30 branches spread over Ohio. OB has a WAN connecting five cities, in which it has branches, to OB’s main headquarters in Columbus. It has a series of MANs in those cities, which in turn connect to the LANs in each of the branches. The OB network is adequate but uses very different data link, network, and transport protocols than those used by BEB’s network. Smith’s task is to connect OB’s network with BEB’s network. She has several alternatives.
 Alternative A is to leave the two networks separate but install a few devices in OB’s headquarters to translate between

The companies do not need to cost much money on making changes of their networks. It keeps translating between the set of protocols whenever the two banks want to make connections. If the headquarters get stuck, the whole connection will be influenced. Furthermore, the LANs cannot get communications in time so the headquarters may need to transfer more data which give it more pressure.
Alternative B It has the best results. BEB and OB will be connected totally. They can transfer and communicate at any time and situation effectively and accurately. It may cost a large amount of money. Changing the whole network also needs a period so during this time the two companies may face inconvenience at work.
Alternative C This way does not need huge changes and seems economical. It is effective and these two companies can achieve the goals easily. They only use WANs or MANs in the cities to commutate with each other, collect the data from the branches themselves. This way will also give the WANs of the cities more pressure which may cause some mistakes and stuck. Also, the LANs of each branch cannot communicate with the other company, may cause some inconvenience on basic data synchronization and

It is a wide service which over voice, video, data and other network services.

As a fast and flexible integrate service, ISDN has the following benefits:

1. It usually provides two channels and it can translate in a faster data transfer rates.
2. It provides multiple channel functionality. ISDN allows different channels to transfer data in the same time.
3. ISDN provides high quality translation. Especially for video and voice transmission. It can have less interference and make the voice and figures clearer.

On the other hand, ISDN is very costly and too expensive for the most business. It also needs specialized digital devices at the same time. But generally ISDN has many obvious advantages and few cons.

Bonus
Describe the network components that exist in a network of your choice (e.g. your home network or your office network), and explain their functionality. If you do not have access to any network, describe the high-level architecture of typical ADSL network.

My home network has the following components now:

1. Internet Modem – It can convert the raw signal into the one we can use in our