I'I'S' C' Olivetti Ivrea

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I.I.S. C. OlivettiIvrea

• Molecole Dresden12-13/November/2006

Molecole Structure
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Molecole Type

• Only Text Molecole
• Audio Molecole
• For both type of molecole we choose ICT subject
• A TCP/IP lesson for only text type molecole
• A Informatic Introduction lesson for audio
  type molecole

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A molecole definition

• For our database implementation a molecole
• is
• a elementary part of a lesson
• a elementary part who can be used in a lesson in
  the same discipline
• a elementary part who can be used in al lesson in
  several disciplines
• a elementary part who can be used in a lesson in
  the same subject
• a elemetary part who can be used in a lesson in
  several disciplines

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Molecole Structure

• Every molecole structure is composed by
• Title
• 1 to 3 disciplines of appartenence
• 1 to 3 subjects
• 1 to 5 keywords
• Molecole content
• Language
• Author (not obbligatory)

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(No Transcript)
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(No Transcript)
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First Molecole

• TCP/IP protocol
• TCP/IP, the protocol of communication of
  Internet, in reality consist of a family of
  protocols closely legacies between they, of which
  TCP (Transmission Control Protocol) and IP
  (Internet Protocol) are the main ones.
• To the level of net protocol IP decides which
  road to follow in order to effectively transmit
  the messages from a computer to the other. A
  computer sends, the other receives, but it is a
  virtual connection between the two remote
  computers.
• In order to concur these communications, to every
  single machine on the net is assigned an 32 bit
  IP address

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Second Molecole

• The TCP/IP net numeration system
• The system of numeration of net of protocol
  TCP/IP has been fixed in 1981. To every single
  machine of the net is assigned a various IP
  address composed of 32 bit , that is 4 byte, than
  it identifies it. In notation it decimates them,
  that means four numbers everyone of which she
  goes from 0 to 255. Byte is usual to separate the
  four (is in binary notation that decimates them)
  with of the points.
• Here is an IP address in the binary notations
  and decimates them
• 11001000.10000101.10101111.01100001200.133.175.9
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• IP address has one first part (that it can be
  composed from the first one, from the first two,
  or the first three byte) that it indicates the
  net number and a second part (the other byte)
  that inside indicates the number of the machine
  of the net.

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Lesson Structure

• TCP/IP protocol
• The TCP/IP net numeration system
• Test
• TCP/IP protocol addressing classes
• Test
• Private Nets - IP addresses assignement
• Test

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Test Type

• The questions in the test are of two type
• The student has to respond true or false
• The student has to choose the correct answer
• Example
• IP address 10.43.97.241 belongs to the private
  net in class B ?
• True False
• Is Port 25 used by TelNet service or by SMTP
  service ?
• TelNet SMTP

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Audio Type Molecole

• The audio file has been obteined by digital
  recording.
• The molecole duration is variable but not is
  possible to imagine long time duration because
  audio format file (mp3) needs much time for
  downloading (for example 7 seconds of audio
  downloaded by Vodafone Italy in Dresden costs 6
  euro)

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Audio Lesson Structure

• Definizione di informatica (21 seconds)
• Sistema di elaborazione (17 seconds)
• Definizione di ICT (16 seconds)
• Definizione Sistemi di I/O (27 seconds)
• Definizione di software (7 seconds)