Question 21 (1 point) Which of the following statements is NOT true about a main

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Question 21 (1 point)

Which of the following statements is NOT true about a mainframe computer?

Question 21 options:

A single computer with a single user is
typical of a mainframe computer.

A mainframe computer provides the computing and storage capacity to meet massive data processing requirements.

A mainframe computer offers users high performance and excellent system availability.

A wide range of application software has been developed to run in the mainframe environment.

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Question 22 (1 point)

A(n) _____ is a field or set of fields in a record that uniquely identifies the record.

Question 22 options:

attribute

entity

primary key

data item

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Question 23 (1 point)

The operating system converts a basic user request into the set of detailed instructions that the computer hardware requires, thus acting as an intermediary between the application and the hardware.

Question 23 options:

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Question 24 (1 point)

A _____ is a subset of a data warehouse that is used by small- and medium-sized businesses and departments within large companies to support decision making.

Question 24 options:

data dictionary

data model

data mart

data mine

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Question 25 (1 point)

As long as the tables in a relational database share one common _____, the tables can be linked to provide useful information and reports.

Question 25 options:

primary key

file

foreign key

data attribute

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Question 26 (1 point)

One of the advantages of off-the-shelf software is that:

Question 26 options:

an organization does not have to pay for features that are not required and never used.

the software always matches current work processes

and data standards.

the initial cost is lower because the software firm can spread the development costs over many customers.

the software contains important features, thus

eliminating the need for future modification

and customization.

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Question 27 (1 point)

An operating system with _____ capabilities allows a user to run more than one program to concurrently.

Question 27 options:

networking

hardware independence

memory management

multitasking

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Question 28 (1 point)

A collection of fields all related to a single object, activity, or individual is a(n) _____.

Question 28 options:

record

file

attribute

character

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Question 29 (1 point)

3G wireless communications supports wireless voice and broadband speed data communications in a mobile environment at speeds of 2 to 4 Mbps.

Question 29 options:

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Question 30 (1 point)

_____ is a 4G alternative based on a set of IEEE 802.16 wireless metropolitan area network standards that support various types of communications access.

Question 30 options:

Long Term Evolution (LTE)

Ultra wideband (UWB)

Near Field Communication (NFC)

Worldwide Interoperability for Microwave Access (WiMAX)

A single computer with a single user is
typical of a mainframe computer.

A mainframe computer provides the computing and storage capacity to meet massive data processing requirements.

A mainframe computer offers users high performance and excellent system availability.

A wide range of application software has been developed to run in the mainframe environment.

Explanation / Answer

Question 21

The statement which is not true in case of mainframe computer is as follows:

A single computer with a single user is
typical of a mainframe computer.

In fact the statement is true in the case of Personal Computers (PC).

Question 22.

A(n) attribute/ primary key is a field or set of fields in a record that uniquely identifies the record.

Records are made up of various fields and or sub-fields whose values varies but in order to identify the record we require some field/s having the unique values and this/these fields are called primary key, therefore the correct choice is Primary key.

Question 23

The operating system converts a basic user request into the set of detailed instructions that the computer hardware requires, thus acting as an intermediary between the application and the hardware.

This is a true statement, operating system is the manager of the computer system and acts as an intermediary between hardware and software.

Question 24

A _____ is a subset of a data warehouse that is used by small- and medium-sized businesses and departments within large companies to support decision making. All the terms, except data mine which is more appropriately used as a process of data mining, may be considered but data mart may be considered as subset of data warehouse. Data dictionary is about meta data and data model is about organization of data.

Supposed to answer maximum four questions at a time, so remaining parts next time.

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