Fundamentals of Computer Networks, computer science homework help

the question is about this subject:  Fundamentalsof Computer NetworksNancySmith is the director of network infrastructure for Big E. Bank (BEB). BEB hasjust purchased Ohio Bank (OB), a small regional bank that has 30 branchesspread over Ohio. OB has a WAN connecting five cities, in which it hasbranches, to OB’s main headquarters in Columbus. It has a series of MANs inthose cities (MAN is a “Metropolitan Area Network”, which usually spans acity), which in turn connect to the LANs in each of the branches. The OBnetwork is adequate but uses very different data link, network and transportprotocols than those used by BEB’s network. Smith’s task is to connect OB’snetwork with BEB’s network. She has several alternatives. Alternative Ais toleave the two networks separate but install a few devices in OB’s headquartersto translate between the set of protocols used in the BEB network and those inthe OB network so that messages can flow between the two networks. AlternativeB is to replace all the WAN, MAN, and LAN network components in OB’s entirenetwork so that OB uses the same protocols as BEB and the two can freelycommunicate. Alternative C is to replace the devices in OB’s WAN (and possiblythe MANs) so that each city (or each branch, if the MANs are replaced as well)can communicate with the BEB network but leave the LANs in individual branchesunchanged. In this case, the device connecting the MAN (or the branch) will translatebetween the OB protocols and the BEB protocols.Your job is to develop a shortlist of pros and cons for each alternative and make a recommendation.