question

An entity is a person, place, thing or event about which information is maintained

answer

TRUE

question

Porter's ______helps(s) companies identify general strategies, whereas his _____ help(s) to identify specific activities where companies can use the strategies for greatest impact

answer

Competitive Forces Model; Value Chain Model

question

The best way to capture the data in an organized format is to use a database

answer

TRUE

question

Increasing amounts of external data need to be considered in making organizational decisions

answer

TRUE

question

Data Rot refers to the data itself

answer

FALSE

question

Which of the following has the broadest impact on an organization?

answer

Decisions about data

question

Which is not a source for external data?

answer

Corporate Databases

question

Its important for application and data to be dependent of each other

answer

FALSE

question

Which of the following is not a reason why managing data is difficult over time?

answer

-New systems are developed. -The media the data are stored on becomes -problematic. -New sources of data are created. -The amount of data increases exponentially. ALL OF THESE

question

Not including alphabetic characters in a Social Security Number field is an example of _____.

answer

Data Integrity

question

A negative value for a student's grade point average is an example of a data integrity problem.

answer

TRUE

question

_____ occurs when applications cannot access data associated with other applications.

answer

Data Isolation

question

_____ occurs when the same data are stored in many places.

answer

Data Redundancy

question

An attribute is any characteristic or quality that describes a particular entity.

answer

TRUE

question

_____ occurs when various copies of the data agree.

answer

Data Consistency

question

The secondary key is a field that identifies a record with complete uniqueness.

answer

FALSE

question

Entity-relationship diagrams are documents that show the primary and secondary keys associated with a conceptual data model.

answer

FALSE

question

You would be an instance of your university's STUDENT class.

answer

TRUE

question

The relational database model is based on the concept of three-dimensional tables.

answer

FALSE

question

Structured query language is a relational database language that enables users to perform complicated searches with relatively simple statements.

answer

TRUE

question

The data dictionary stores definitions of data elements, characteristics that use the data elements, physical representation of the data elements, data ownership, and security.

answer

TRUE

question

When data are normalized, attributes in the table depend on the primary key and any secondary keys.

answer

FALSE

question

In a data warehouse, existing data are constantly purged as new data come in.

answer

FALSE

question

An organization's data warehouse generally maintains its operational data

answer

FALSE

question

Online analytical processing (OLAP) involves the analysis of accumulated data by end users.

answer

TRUE

question

Data marts are designed for the end-user needs in a strategic business unit or department.

answer

TRUE

question

Master data are generated and captured by operational systems.

answer

FALSE

question

Tacit knowledge is the more objective, rational, and technical types of knowledge.

answer

FALSE

question

Explicit knowledge refers to the cumulative store of subjective learning, which is personal and hard to formalize.

answer

FALSE

question

Tacit Knowledge is:

answer

Unwritten, unspoken, and hidden vast storehouse of knowledge held by practically every normal human being -to the cumulative store of subjective learning, which is personal and hard to formalize.

question

Explicit Knowledge is:

answer

the more objective, rational, and technical types of knowledge.

question

Place the following members of the data hierarchy in their correct order: _____.

answer

Bit - byte - field - record - file - database

question

A(n) _____ is a logical grouping of characters into a word, a small group of words, or a complete number.

answer

Field

question

A(n) _____ is a logical grouping of related files.

answer

Database

question

In a database, the primary key field is used to _____.

answer

uniquely identify a record

question

_____ are fields in a record that have some identifying information but typically do not identify the record with complete accuracy.

answer

Secondary Keys

question

As an individual student in your university's student database, you are a(n) _____ of the STUDENT class.

answer

Instance

question

At your university, students can take more than one class, and each class can have more than one student. This is an example of what kind of

answer

Many-to-Many

question

In a university's relational database, the student record contains information regarding the student's last name. The last name is a(n):

answer

Attribute

question

A database management system is primarily a(n) _____.

answer

interface between applications and a database

question

In the relational database model, related tables can be joined when they contain common _____.

answer

Columns

question

_____ tell the database management system which records are joined with others in related tables.

answer

Primary Keys

question

A standardized language used to manipulate data is _____.

answer

structured query language

question

Data dictionaries provide which of the following advantages to the organization?

answer

They reduce data inconsistency. They enable faster program development. They make it easier to modify data and information. Both "They enable faster program development." and "They make it easier to modify data and information." All of these

question

_____ is a method for analyzing and reducing a relational database to its most streamlined form.

answer

Normalization

question

When data are normalized, attributes in the table depend only on the ____________ .

answer

Primary Key

question

The data in a data warehouse have which of the following characteristics?

answer

They are organized by subject.

question

The data in a data warehouse:

answer

are not updated.

question

The process of moving data from various sources into the data warehouse is called:

answer

extracting, transforming, and loading.

question

Compared to data warehouses, data marts have which one of the following characteristics?

answer

They cost less.

question

_____ is a formal approach to managing data consistently across an entire organization.

answer

Data Governance

question

_____ provide(s) companies with a single version of the truth for their data.

answer

Master Data Management

question

Organizations are turning to data governance for which of the following reasons?

answer

They are responding to federal regulations

question

_____ describe the activities of the business, whereas _____ categorize(s), aggregate(s), and evaluate(s) data generated by the organization's activities.

answer

Transaction data, master data

question

_____ is a process that helps organizations identify, select, organize, disseminate, transfer, and apply expertise that are part of the organization's memory and typically reside inside the organization in an unstructured manner.

answer

Online Analytical Processing

question

Historically, management information systems have focused on capturing, storing, managing, and reporting _____ knowledge.

answer

Explicit

question

The most important benefit of knowledge management systems is:

answer

They make best practices available to employees.

question

is not a component of a local area network?

answer

Bridge

question

A local area network connects two or more communicating devices in a broad geographical area.

answer

FALSE

question

Network interface cards are special adapters that link an individual device to the communications medium on a local area network.

answer

TRUE

question

Wide-area networks have a large capacity, and they typically use a single communications channel.

answer

FALSE

question

_____ refers to the range of frequencies available in any communications channel.

answer

Bandwidth

question

advantages of computer networks?

answer

They enable organizations to be more flexible. They enable companies to share hardware, computer applications, and data. They enable geographically dispersed employees to work together. They provide a critical link between businesses and their customers ALL OF THESE

question

The components of a local area network include which of the following?

answer

File server Client computers Wireline or wireless communications media Network interface cards ALL OF THESE

question

Digital signals are continuous waves that transmit information by altering the characteristics of the waves.

answer

FALSE

question

A _____ connects dissimilar networks.

answer

Gateway

question

Digital signals have two parameters: frequency and amplitude.

answer

FALSE

question

A _____ sends messages through several connected LANs or to a wide- area network.

answer

Router

question

Cable media use wires or cables to transmit data and information.

answer

TRUE

question

A _____ allows a device to physically connect to a local area network's communications medium.

answer

Network Interface Card

question

Cladding is the coating that surrounds fiber-optic cables and prevents light from leaking out of the fiber.

answer

TRUE

question

All of the following statements concerning wide-area networks are true except:

answer

They are provided by individual companies.

question

Wide-area Networks:

answer

They have large capacity. They cover large geographical areas. They combine multiple communications channels. The Internet is an example of a wide-area network

question

Systems that use digital subscriber lines (DSL) do not require modems.

answer

FALSE

question

_____ are hardware devices that support data transmission and reception across a telecommunications system.

answer

Communications channels

question

Which of the following is not a communications channel?

answer

Integrated Circuits

question

The cable medium with the highest bandwidth is:

answer

Fiber-optic cable

question

Currently, ATM networks operate only on fiber-optic cable.

answer

TRUE

question

Data are sent through a fiber-optic cable by a(n) _______.

answer

Laser

question

Which data transmission technology requires fiber-optic cable, can transmit up to 2.5 gigabits per second, and is more expensive than DSL?

answer

Asynchronous transfer mode

question

Intranets support discovery, communication, and collaboration inside an organization.

answer

TRUE

question

Which of the following is a digital transmission system that defines circuits that operate at different rates, all of which are multiples of the basic 64 Kbps used to transport a single voice call?

answer

T-Carrier System

question

A protocol is:

answer

A standard set of rules and procedures for the control of communications in a network

question

An extranet is a network that uses Internet technologies and is designed to serve the information needs of a single organization.

answer

FALSE

question

Internet kiosks are computer terminals located in public places like libraries and airports.

answer

TRUE

question

A domain name is the official name assigned to an Internet site, consisting of multiple parts, separated by dots, which are translated from right to left in locating the site.

answer

TRUE

question

The World Wide Web is a system with universally accepted standards for storing, retrieving, formatting, and displaying information via a client/server architecture.

answer

TRUE

question

Uniform resource locators (URLs) point to the address of a specific resource or site on the Web.

answer

TRUE

question

Forward auctions are auctions that sellers use as a channel to many potential buyers.

answer

TRUE

question

Even though B2C EC is much larger by volume, B2B is more complex.

answer

FALSE

question

An electronic storefront is a Web site on the Internet that represents a many stores.

answer

FALSE

question

Virtual banks are those banks that are dedicated only to Internet transactions.

answer

TRUE

question

Channel conflict occurs when click-and-mortar companies have problems with their regular distributors when they sell directly to customers online.

answer

TRUE

question

Difficulties in order fulfillment are most closely associated with which type of electronic commerce?

answer

Business-to-Consumer

question

Internet advertising is impersonal, one-way mass communication.

answer

FALSE

question

________ is the process whereby a fully automated electronic commerce transaction eliminates middlemen.

answer

Disintermediation

question

Hacking is the indiscriminate distribution of electronic ads without permission of the receiver.

answer

FALSE

question

Which of the following is not an electronic commerce application?

answer

Conducting an auction

question

An Electronic Commerce Application:

answer

home banking buying stocks evaluating an employee buying real estate

question

Business-to-consumer applications comprise the majority of electronic commerce volume.

answer

FALSE

question

_______ e-commerce is also known as e-tailing.

answer

Business-to-Consumer

question

_____ auctions are the most common auction model for large purchases.

answer

Reverse

question

Mostly, eBay uses a _____ auction.

answer

Forward

question

Horizontal exchanges connect buyers and sellers across many industries.

answer

TRUE

question

In _____ auctions, there is one buyer who wants to buy a product. Suppliers submit bids, and the lowest bid wins.

answer

Reverse

question

Direct payment of Social Security benefits is an example of ______ e-commerce.

answer

Government-to-Citizen

question

In most cases, traditional payment systems are not effective for electronic commerce.

answer

TRUE

question

In ________ e-commerce, an organization provides information and services to its workers.

answer

Business-to-Employee

question

The degree of digitization relates to all of the following except:

answer

the size of e-commerce transactions

question

Degree of digitalization has:

answer

the product or service sold the process by which the product is produced the delivery agent or intermediary

question

Smart cards can be used as credit cards, debit cards, and/or loyalty cards.

answer

TRUE

question

E-commerce affects only businesses that sell products online.

answer

FALSE

question

Electronic commerce is the buying and selling of products, services, and information via computer networks, primarily the Internet

answer

TRUE

question

Electronic business is a broader term than electronic commerce.

answer

TRUE

question

In traditional commerce, the product or service, the process, and the delivery agent are physical.

answer

TRUE

question

In traditional commerce, one or more of the product or service, the process, and the delivery agent can be digital.

answer

FALSE

question

In partial electronic commerce, at least one of the product or service, the process, or the delivery agent is digital.

answer

TRUE

question

Companies that are engaged only in electronic commerce are considered virtual (or pure-play) organizations.

answer

TRUE

question

With business-to-consumer EC, the sellers are organizations and the buyers are individuals.

answer

TRUE

question

Internet-based classified ads increase the number of potential buyers.

answer

TRUE

question

. In business-to-employee electronic commerce, an organization uses EC internally to provide information and services to its employees.

answer

TRUE

question

The reverse auction is the most common auction model for large purchases.

answer

TRUE

Midterm 2 IST 309

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