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

Question 21 (1 point) Question 21 Unsaved 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.
Save Question 22 (1 point) Question 21 Unsaved 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
Save Question 23 (1 point) Question 21 Unsaved 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:
True
False
Save Question 24 (1 point) Question 21 Unsaved 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
Save Question 25 (1 point) Question 21 Unsaved 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
Save Question 26 (1 point) Question 21 Unsaved 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.
Save Question 27 (1 point) Question 21 Unsaved 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
Save Question 28 (1 point) Question 21 Unsaved A collection of fields all related to a single object, activity, or individual is a(n) _____. Question 28 options:
record
file
attribute
character
Save Question 29 (1 point) Question 21 Unsaved 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:
True
False
Save Question 30 (1 point) Question 21 Unsaved _____ 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)

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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