Most large enterprises have a network of homegrown， legacy mainframe， and packaged applications that need to share information and （ ） . Unfortunately， most of these systems are proprietary to the vendor， and were written in different programming languages with different data structures. Integration （ ） was developed to allow （ ） systems to communicate. Enterprise Application Integration (EAI) is used to integrate applications inside the （ ） . B2B integration extends integration beyond the enterprise to customers， partners， and suppliers. The emerging Web Services （ ） goes even further by defining a single set of standards for integration both inside and outside the enterprise. As a result， vendors in EAI and B2B markets will be profoundly affected by Web Services. （ ）A. network B. computers C. data D. functionality （ ）A. system B. component C. middleware D. module （ ）A. incompatible B. compatible C. similar D. dissimilar （ ）A. Internet B. LAN C. intranet D. firewall （ ）A. organization B. group C. model D. block