6. Using Data Types & Units Flashcards

1
Q

What do Hertz (Hz) measure?

i.e Megahertz (MHz) & Gigahertz (GHz).

MHz = 1,000,000 cycles per second
GHz= 1,000,000,000 cycles per second

A

Computer’s internal clock speed

The speed at which the processors work

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2
Q

Meaning of ASCII?

A

American Standard Code for Information Interchange

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3
Q

2 types of character encodings?

A
  • ASCII
  • Unicode
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4
Q

How many bits are used to represent characters in ASCII?

A

7 bits

7 bits were used rather than 8 because it lowered the cost at the time (1963)

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5
Q

What is a more modern solution to ASCII?

A

Unicode

There are different Unicode character encoding standards, including UTF-8, UTF-16, and UTF-32. UTF-8 is used by many websites.

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6
Q

What is a security control?

A

Mechanism designed to unauthorized data access & tampering

There are many types of security controls, and they can be classed in different ways

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7
Q

How to decide whether to invest in security control?

A

By calculating ROSI

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8
Q

Meaningo of ROSI?

A

Return On Security Investment

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9
Q

How to calculate ROSI?

A

Assess risks to determine potential data loss costs & likelihood

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10
Q

What is data exfiltration?

A

Unauthorized removal of data from a network

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11
Q

What is a data breach?

A

When a network exposes private data publicly

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12
Q

3 types of Intellectual Property (IP)?

A
  • Trademark
  • Copyright
  • Patents
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13
Q

What does Copyright do?

A

Grants control over a work’s use to the holder

Including publishing, distributing, & selling

The creation of the work ensures copyright protection automatically.

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14
Q

What do Trademarks do?

A

Protects, symbols, names, or designs that distinguish goods & services

if a company wants to promote its goods it will normally trademark its name and/or logo

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15
Q

What is a patent?

A

Legal protection for some kind of invention

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16
Q

How does a patent differ from Copyright?

A

By also applying to ideas

As long as the idea is original, useful, & distinctive or non-trivial.

You dont need to have a copy of the invention or put it into practice. Patents are registered for a limited time only

17
Q

What is a patent infringement?

A

Unauthorized use of an invention

18
Q

3 types of data-drive business decisions?

A
  • Data collection
  • Data correlation
  • Meaningful reporting

Data correlation means analyzing the whole data set and finding connections and links between data points

i.e. Software may correlate page visitors with color schemes, noting that pages mostly blue attract more visitors than those with more yellow.

19
Q

What aspect of data analytics benefits most from impactful reporting?

A

Insights