Which of the following is a critical success factor in data mining a large data store?
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2 .Which of the following statements is (are)correct for application software? I. Application software can be purchased or developed internally. If application software is purchased, the purchase is of the software itself, and the purchaser can do whatever it wishes with the software. II. When application software is purchased, the purchaser invariably receives a copy of the source code and, for large applications, the source code is escrowed. Escrow of the source code protects the software vendor if the purchaser fails to live up to its contractual obligations. III. When application software is purchased, maintenance for that software may or may not be purchased. Maintenance is normally updates and support.
A I, II, and III are correct. B II and III only are correct. C III only is correct. D I and II only are correct.
3 .All of the following statements are correct for a telecommunications network, except:
A Routers connect different types of networks, and gateways route packets of data through interconnected LANs. B A communication or network protocol is the set of rules that allows the various pieces of hardware and software that are included in the network to communicate. C Some of the functions of...
4 .Most client/server applications operate on a three-tiered architecture consisting of which of the following layers?
A Desktop client, application, and database. B Desktop server, software, and hardware. C Desktop client, software, and hardware. D Desktop server, application, and database.
5 .Stonehenge Corporation utilizes severaldatabase management systems in its various application systems running at datacenter just north of London, England. Which of the following statements is/arecorrect for these databases? I. In a relational database, the data are stored in two-dimensional tables that are implemented by indexes and linked lists. II. Normalization is the process of separating data into logical tables. III. Object-oriented databases can be used to store comments, drawings, images, voice, and video that do not normally fit into more structured databases. Object-oriented databases are normally faster than relational databases.
A I, II, and III are correct. B II and III only are correct. C II only is correct. D III only is correct.
7 .Which of the following is a primary function of a database management system?
A Report customization. B Database access authorizations. C Financial transactions input. D Capability to create and modify the database.
8 .A value-added network (VAN) is a privately owned network that performs which of the following functions?
A Route data within a company's multiple networks. B Route data transactions between trading partners. C Provide services to send marketing data to customers. D Provide additional accuracy for data transmissions.
9 .The computer operating system performs scheduling, resource allocation, and data retrieval functions based on a set of instructions provided by the:
A Multiplexer. B Peripheral processors. C Job control language. D Concentrator.
10 .The type of database that is connected by a company's local area networks is a(n):
A Distributed database. B Analytical database. C End-user database. D Data warehouse.
