©BRIGHTSTARS EXAM SOLUTIONS
11/16/2024 10:16 AM
MANG 3778 Exam Questions With Correct
Answers
Quantum computing uses nanos which can be one, a zero, or something else, all at the same
time. - answer✔False
Since information technology is stable and not improving much, it is important for business to
understand how to use IT. - answer✔False
Moore's Law was first reported in _________________ - answer✔1965
Computing devices made from carbon nanotubes can be built in _______________
architectures with many layers, creating very compact, fast computers. - answer✔three-
dimensional
One technology that may provide even smaller devices in the future is ___________________. -
answer✔quantum technology
In a carbon nanotube the atoms of carbon are arranged in a special structure resembling a
tube. - answer✔True
In 2018, Intel's processor technology made devices that were 14 nanometers in size. About
______________ devices of this size can fit in the width of human hair. - answer✔6,000
In 2019, computer chip technology has advanced to the point that leading edge devices from
Apple, Qualcomm and AMD use 70 nano-meter technology. - answer✔False
This new technology, currently in its infancy, promises vastly improved data storage capability. -
answer✔DNA storage
A nanometer is a trillionth of a meter. - answer✔False
Moore's Law states that the number of transistors per square inch on a microchip ________
every two years. - answer✔doubles
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One new approach to produce future 7 nanometer computer chips is 5G technology. -
answer✔False
A music recording is digitized in two formats. Format A uses 22,000 samples per second and 16
bits, while format B uses 44,000 samples per second and 32 bits. - answer✔Format B is a better
quality recording than format A.
_________ is the conversion of data from other formats into a binary format, i.e. a language
with two characters. - answer✔Digitization
A physician checks patient files from her cellphone at home. This is an example of
______________ - answer✔ubiquity
A physician can check patient files at any location, whether at the clinic, at home, or traveling.
This is an example of _________________________. - answer✔ubiquitous computing
A bank uses IT to reduce the need for tellers at the counter. This is an example of using IT for
___________. - answer✔efficiency
____________ argued that IT may be over-hyped , and it may be possible for most businesses
to obtain IT int he manner of a utility (like electric power, water), - answer✔None of the above
The video lecture on Moodle is a digitized media file - answer✔True
It is more difficult to search through digitized data than to search through analog data. -
answer✔False
A vinyl music album is an ______________ recording. - answer✔analog
When a media file (for example, a book) is digitized, it can be ________________. - answer✔A,
B, and C are all true
_______ means that an information system is available at all times and at all locations. -
answer✔Ubiquity
It is easier to copy digital data than analog data. - answer✔true
A business grows rapidly through many acquisitions. The IT systems are not integrated and are
disorganized. As a result, customer addresses are stored in many different files, and often are
not consistent. This is called data ___________________. - answer✔none of the other choices
#Fileds : data time action protocol src-ip
This is an example of a CSV file. - answer✔false
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Some of the features of a DBMS are: - answer✔it stores, modifies, and extracts data from a
database
Program data independence refers to ________________________. - answer✔programs use
data from a common, independent database
(looks like an application )This is an example of a distributed database file - answer✔False
Match the following data sizes to the scenario.
1. Data collected by a large organization such as Walmart in its customer database
2. Storage capability of personal use storage device such as a flash drive - answer✔1. petabytes
2. gigabytes
A blockchain database can grow very large over time as new blocks are added. - answer✔True
The Hadoop Distributed File System stores data in small blocks and uses replication to ensure
that each small block is replicated in multiple locations to enhance reliability and availability. -
answer✔true
The CREATE, DROP, ALTER, and RENAME commands in SQL are ___________ commands. -
answer✔DDL (Data Definition language)
The links between the tables in an RDBMS are called ________________. -
answer✔relationships
A/an ______________ pre-calculates and stores summary data, such as sales data for each
customer, product, and time unit in a multi-dimensional form. - answer✔OLAP cube
_______________ is an automated approach to the transfer of data from other formats into a
binary format, i.e. a language with two characters. - answer✔None of the other choices
One feature of data quality is "completeness". A database which has this feature
___________________. - answer✔must contain all the necessary data
A comma separated value (CSV) file is an XML file. - answer✔False
A company plans to capture business quality data in a new IT system. The development team
gathers requirements from the company and develops a ______________________ of the
database to represent the data used by the business and show the relationships between data
items. - answer✔logical design
The structure of the data is determined after the data is stored in the database. - answer✔false
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A bit is a single binary digit (0/1) stored in a computer. - answer✔true
Match the following.
1. Gather the required data for analysis from multiple HDFS nodes and generate data for
analysis, for example data in video is extracted by customer sentiment
2. Gathers together similar/related pieces of data, for example all video of product returns to
shelf
3. Perform calculations to generate useful information such as proportion of customers
replacing items to shelf. - answer✔1. map
2. shuffle
3. reduce
A blockchain database used to store documents about a product from manufacture, through
shipment and storage, until it reaches the end customer ______________. - answer✔Both A
and B are true
The primary key value for each record (row) in a table is unique. - answer✔True
________ means that the database can grow as needed by the business, without having to start
all over with a new system. - answer✔scalability
Data warehouses use _______________ to provide fast response to data queries on very large
data-sets - answer✔OLAP
a data ______ is a subset of a data warehouse and is designed to to provide analytics support
for a few important problems. It is a smaller version of a data warehouse. - answer✔mart
A database does not have any needlessly repeated data. For example customer addresses are
stored in only one location. This is termed database ________________. - answer✔uniqueness
The term ________ refers to data about data. - answer✔metadata
person ---makes payment ---
This is a ___________________ database diagram. - answer✔physical design
reservation - make - customer
This is a example of a __________ . - answer✔logical database diagram
A large table with millions of records is ________ for quick data retrieval. - answer✔indexed
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