Foundations Of CS an der University Of South Africa | Karteikarten & Zusammenfassungen

Lernmaterialien für Foundations of CS an der University of South Africa

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TESTE DEIN WISSEN

Which of the following statements regarding sorting algorithms is TRUE?

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Heap sort is less sufficient than bubble sort

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Name 3 database models

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  • Hierarchical
  • Network
  • Relational (most popular)
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In relations, what is a tuple and an attribute?

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  • Attribute: column in relation
  • Tuple: row in relation
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What is XML and which database is it used for?

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TESTE DEIN WISSEN

eXtensible Markup Language is used for object-oriented databases

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What is a transaction file?

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TESTE DEIN WISSEN

It contains changes to be applied to the master file in a sequential file update

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Name the 2 types of files normally used for accessing records randomly

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  1. Indexed file
  2. Hashed file
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List the 4 subsystems comprising a machine based on the von Neumann model

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  1. Memory
  2. Arithmetic Logic Unit (ALU)
  3. Control Unit
  4. Input / Output (I/O)
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List the main functions of an OS

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  • Program execution
  • System access
  • Access to I/O and files
  • Facilities for program creation
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TESTE DEIN WISSEN

Which logic gate has an output of 1 only if it has 2 inputs that are not equal?

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TESTE DEIN WISSEN

XOR

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TESTE DEIN WISSEN

CS is divided into the 2 broad categories system areas and application areas. Which one of the following statements regarding these areas is FALSE?

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TESTE DEIN WISSEN

Software engineering falls under application areas

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Who invented a machine that could solve polynomial equations, called the Difference Engine?

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TESTE DEIN WISSEN

Charles Babbage

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Which of the following regarding storing audio is FALSE?

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TESTE DEIN WISSEN

Audio is an example of digital data

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Q:

Which of the following statements regarding sorting algorithms is TRUE?

A:

Heap sort is less sufficient than bubble sort

Q:

Name 3 database models

A:
  • Hierarchical
  • Network
  • Relational (most popular)
Q:

In relations, what is a tuple and an attribute?

A:
  • Attribute: column in relation
  • Tuple: row in relation
Q:

What is XML and which database is it used for?

A:

eXtensible Markup Language is used for object-oriented databases

Q:

What is a transaction file?

A:

It contains changes to be applied to the master file in a sequential file update

Mehr Karteikarten anzeigen
Q:

Name the 2 types of files normally used for accessing records randomly

A:
  1. Indexed file
  2. Hashed file
Q:

List the 4 subsystems comprising a machine based on the von Neumann model

A:
  1. Memory
  2. Arithmetic Logic Unit (ALU)
  3. Control Unit
  4. Input / Output (I/O)
Q:

List the main functions of an OS

A:
  • Program execution
  • System access
  • Access to I/O and files
  • Facilities for program creation
Q:

Which logic gate has an output of 1 only if it has 2 inputs that are not equal?

A:

XOR

Q:

CS is divided into the 2 broad categories system areas and application areas. Which one of the following statements regarding these areas is FALSE?

A:

Software engineering falls under application areas

Q:

Who invented a machine that could solve polynomial equations, called the Difference Engine?

A:

Charles Babbage

Q:

Which of the following regarding storing audio is FALSE?

A:

Audio is an example of digital data

Foundations of CS

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