[Year 12 SofDev] Handshaking
Kevork Krozian
kevork at edulists.com.au
Thu Mar 10 22:32:01 EST 2011
Hi Russell,
Handshaking happens at layer 4 - Transport layer.
A good explanation can be found here http://www.rhyshaden.com/tcp.htm
Speak soon
Kevork Krozian
Edulists Creator Administrator
www.edulists.com.au
tel: 0419 356 034
-----Original Message-----
From: sofdev-bounces at edulists.com.au [mailto:sofdev-bounces at edulists.com.au]
On Behalf Of Russell Quinn
Sent: Thursday, 10 March 2011 3:48 PM
To: sofdev at edulists.com.au
Subject: [Year 12 SofDev] Handshaking
Does anyone know at what layer of the OSI7 does the handshake
take place. I thought it must be in the session layer but I was assured
it was in the transport layer.
Regards,
Russell Quinn
________________________________________
From: sofdev-bounces at edulists.com.au [sofdev-bounces at edulists.com.au] On
Behalf Of sofdev-request at edulists.com.au [sofdev-request at edulists.com.au]
Sent: Thursday, 10 March 2011 3:04 PM
To: sofdev at edulists.com.au
Subject: sofdev Digest, Vol 72, Issue 29
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Today's Topics:
1. Re: Physical Layer (Russell Quinn)
2. I need a school to join up with (Anna Gulyas)
----------------------------------------------------------------------
Message: 1
Date: Thu, 10 Mar 2011 12:54:53 +1100
From: Russell Quinn <QN at boxhillhs.vic.edu.au>
Subject: Re: [Year 12 SofDev] Physical Layer
To: "sofdev at edulists.com.au" <sofdev at edulists.com.au>
Message-ID:
<0A8D8EB68434594C8D14AC2FA74B58C7C7B96F5B6A at BHHSVM-MSX.boxhillhs.vic.edu.au>
Content-Type: text/plain; charset="us-ascii"
According to wiki, the physical layer is much more than a pipe:
"
The major functions and services performed by the Physical Layer are:
Bit-by-bit or symbol-by-symbol delivery
Providing a standardized interface to physical transmission media, including
Mechanical specification of electrical connectors and cables, for example
maximum cable length
Electrical specification of transmission line signal level and impedance
Radio interface, including electromagnetic spectrum frequency allocation and
specification of signal strength, analog bandwidth, etc.
Specifications for IR over optical fiber or a wireless IR communication link
Modulation
Line coding
Bit synchronization in synchronous serial communication
Start-stop signalling and flow control in asynchronous serial communication
Circuit switching
Multiplexing
Establishment and termination of circuit switched connections
Carrier sense and collision detection utilized by some level 2 multiple
access protocols
Equalization filtering, training sequences, pulse shaping and other signal
processing of physical signals
Forward error correction[2] for example bitwise convolutional coding
Bit-interleaving and other channel coding
The Physical Layer is also concerned with
Bit rate
Point-to-point, multipoint or point-to-multipoint line configuration
Physical network topology, for example bus, ring, mesh or star network
Serial or parallel communication
Simplex, half duplex or full duplex transmission mode
Autonegotiation
"
Regards,
Russell Quinn
________________________________________
From: sofdev-bounces at edulists.com.au [sofdev-bounces at edulists.com.au] On
Behalf Of sofdev-request at edulists.com.au [sofdev-request at edulists.com.au]
Sent: Thursday, 10 March 2011 9:31 AM
To: sofdev at edulists.com.au
Subject: sofdev Digest, Vol 72, Issue 28
Send sofdev mailing list submissions to
sofdev at edulists.com.au
To subscribe or unsubscribe via the World Wide Web, visit
http://www.edulists.com.au/mailman/listinfo/sofdev
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sofdev-request at edulists.com.au
You can reach the person managing the list at
sofdev-owner at edulists.com.au
When replying, please edit your Subject line so it is more specific
than "Re: Contents of sofdev digest..."
Today's Topics:
1. Re: SD key knowledge (Andrew Shortell)
2. Re: SD key knowledge (malcolm)
3. Re: SD key knowledge (Mark KELLY)
4. UCD do have relevance .... (Bell, Kenneth C)
----------------------------------------------------------------------
Message: 1
Date: Wed, 09 Mar 2011 20:18:23 +1100
From: Andrew Shortell <shortell at get2me.net>
Subject: Re: [Year 12 SofDev] SD key knowledge
To: "Year 12 Software Development Teachers' Mailing List"
<sofdev at edulists.com.au>
Message-ID: <C99D910F.3A41%shortell at get2me.net>
Content-Type: text/plain; charset="iso-8859-1"
Hi Mark
[nice ppt btw]
Each and EVERY member of the study design panel should be able to clearly
and unequivocally, definitively answer your question because they put it in
the study design. It did not get there by accident. All members of the panel
are responsible for the document...
Members of the panel discuss (and read) the document and have the
opportunity to clarify anything that they do not understand.
Just occasionally something gets missed ... That is why we have errata and
corrections published (and I know all about those!)
If it is not an errata the there must be a definitive answer so let?s just
ask the panel to provide it rather than us guessing, perhaps not getting it
in the way that the panel intended and absolutely missing what the exam
setting panel might think. We do NOT want the exam setting panel to receive
a torrent of unwarranted adverse comments.
As mature sensible professionals we should all be working towards a common
set of understandings that are generously shared (as per this list).
[btw ? at least a dead dog does not fight you when you stick the cotton bud
in to its ears! Try doing an alive Alaskan malamute! ]
Andrew
--
Andrew Shortell
Heidelberg Teaching Unit
Ph 9470 3403
Fax 9470 3215
c/o Reservoir High School
855 Plenty Rd
Reservoir 3073
On 9/03/11 1:21 PM, "Mark KELLY" <kel at mckinnonsc.vic.edu.au> wrote:
> SD U3O1 KK04
> Purposes and functions of the physical layer (Layer 1) of the OSI and the
> relationship of the physical layer to the Transmission Control
> Protocol/Internet Protocol model
>
> For quite some time now I've been avoiding this KK because I'd rather
clean a
> dead dog's ears than spend time on the OSI.
>
> But in the end I had to find the cotton buds and get stuck in, and I think
I
> have a reasonable overview of the OSI and how TCP/IP maps to it.? (even
> produced a draft slideshow <http://www.vceit.com/slideshows/SD-OSI.ppt> ).
>
> But the second part of KK04 really has me baffled: the relationship of the
> physical layer to the Transmission Control Protocol/Internet Protocol
model.
> I know that TCP/IP's Network interface layer maps to OSI's physical layer
(and
> the data link layer), but for the life of me I can't see how it's any more
> significant than any of OSI's or TCP/IP's other layers.
>
> Can someone suggest why the relationship between the OSI physical layer
and
> TCP/IP is so significant??
> Has this relationship been in the papers?? Has this physical relationship
> resulted in offspring?
> Is Mr OSI going to be on Oprah... or the Jerry Springer show?
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Message: 2
Date: Wed, 9 Mar 2011 21:42:01 +1100
From: "malcolm" <mjarb at iname.com>
Subject: Re: [Year 12 SofDev] SD key knowledge
To: "'Year 12 Software Development Teachers' Mailing List'"
<sofdev at edulists.com.au>
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAAGPyxeBNO0ZNiMTNYNVfeQuijQAAEAAAAHIOE31DkNhHrDR83BHj
4fQBAAAAAA==@iname.com>
Content-Type: text/plain; charset="us-ascii"
Hi,
Just adding to the conversation,
The physical layer is just that - the actual cable, whether cat 5 or other.
As you progress up the layers, the data link layer is your protocols for
your network card to get the signals on and off the cable and the next layer
up (the network layer) is where the data gets formed into packets and
addressed - logical address/Mac address.
After that the transport layer is where the data gets chunked for
transmission or reassembled on reception into a data stream.
Most people talk about TCP/IP as if they were together yet they each
represent a different layer in the OSI model. TCP being in one layer and IP
in the other.
The only reason I see them as being important is that they flow down from
the above layers to allow the data stream to be broken down into packets,
addressed, etc so they can go out on the cable or visa versa.
Each layer is as important as the one above or below. If one layer doesn't
function correctly then the data can be lost or not sent/received/corrupted,
etc.
We can use different tests to test the layers in a network - ping as an
example - ping a domain name - www.microsoft.com, ping localhost, or ping a
specific ip address on a network to check that different layers e.g link,
etc are working correctly.
This link may be of useful reference http://tools.ietf.org/html/rfc1122
Regards
Malcolm Carson
Glenmore Park High School, NSW
-----Original Message-----
From: sofdev-bounces at edulists.com.au [mailto:sofdev-bounces at edulists.com.au]
On Behalf Of David Dawson
Sent: Wednesday, 9 March 2011 1:37 PM
To: sofdev at edulists.com.au
Subject: Re: [Year 12 SofDev] SD key knowledge
My guess is that it means the 'physical layer' relates to 'network
standards' in Hardware, like the electronics and microtechnology in modems
and network cards, SIMS etc; connections like CAT 5 and 802.11 wireless
transmission - which then must send packets via a standard communication
protocol (TCP/IP) for transmission of data across the Internet and LANs.
Hence this relationship points to a universal standard for Internet
connection devices.
Let me know if I am warm .....
David Dawson
Head of Information Technology Learning Area Head of Learning Technologies
St Kilda Rd Campus Wesley College
577 St Kilda Rd
Melbourne 3004
Ph 8102 6340
Mob 0425 718147
>>> sofdev-bounces at edulists.com.au 03/09/11 1:21 PM >>>
SD U3O1 KK04
Purposes and functions of the physical layer (Layer 1) of the OSI and the
relationship of the physical layer to the Transmission Control
Protocol/Internet Protocol model
For quite some time now I've been avoiding this KK because I'd rather clean
a dead dog's ears than spend time on the OSI.
But in the end I had to find the cotton buds and get stuck in, and I think I
have a reasonable overview of the OSI and how TCP/IP maps to it.
(even produced a draft slideshow).
But the second part of KK04 really has me baffled: the relationship of the
physical layer to the Transmission Control Protocol/Internet Protocol model.
I know that TCP/IP's Network interface layer maps to OSI's physical layer
(and the data link layer), but for the life of me I can't see how it's any
more significant than any of OSI's or TCP/IP's other layers.
Can someone suggest why the relationship between the OSI physical layer and
TCP/IP is so significant?
Has this relationship been in the papers? Has this physical relationship
resulted in offspring?
Is Mr OSI going to be on Oprah... or the Jerry Springer show?
--
Mark Kelly
Manager of ICT, Reporting, IT Learning Area McKinnon Secondary College
McKinnon Rd McKinnon 3204, Victoria, Australia Direct line / Voicemail: +613
8520 9085, Fax +613 9578 9253 kel at mckinnonsc.vic.edu.au
VCE IT Lecture Notes: http://vceit.com
Moderator: IT Applications Edulist
All generalisations are false, except this one.
____________________________________________________________________________
Sapere Aude - Dare To Be Wise
Wesley College Melbourne is a world class coeducational independent school
developing the whole person through timeless principles of learning:
- to know
- to do
- to live with
- to be
with innovation and wisdom
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Association Inc
------------------------------
Message: 3
Date: Thu, 10 Mar 2011 08:22:45 +1100
From: Mark KELLY <kel at mckinnonsc.vic.edu.au>
Subject: Re: [Year 12 SofDev] SD key knowledge
To: "Year 12 Software Development Teachers' Mailing List"
<sofdev at edulists.com.au>
Message-ID:
<AANLkTikdR+go8sX2vxnwusfFuGXsJ_9aoZWSqpVMm+nB at mail.gmail.com>
Content-Type: text/plain; charset="windows-1252"
Hi Andrew. I just wanted to eliminate the very real possibility that I had
missed a blindingly obvious reason for the key knowledge being included.
>From your reply, it seems that you can't see its relevance either.
In that case, I'll escalate the enquiry and report back...
Cheers
Mark
On 9 March 2011 20:18, Andrew Shortell <shortell at get2me.net> wrote:
> Hi Mark
>
> [nice ppt btw]
>
> Each and EVERY member of the study design panel should be able to clearly
> and unequivocally, definitively answer your question because they put it
in
> the study design. It did not get there by accident. All members of the
panel
> are responsible for the document...
> Members of the panel discuss (and read) the document and have the
> opportunity to clarify anything that they do not understand.
> Just occasionally something gets missed ... That is why we have errata and
> corrections published (and I know all about those!)
>
> If it is not an errata the there must be a definitive answer so let?s just
> ask the panel to provide it rather than us guessing, perhaps not getting
it
> in the way that the panel intended and absolutely missing what the exam
> setting panel might think. We do NOT want the exam setting panel to
receive
> a torrent of unwarranted adverse comments.
>
> As mature sensible professionals we should all be working towards a common
> set of understandings that are generously shared (as per this list).
>
>
> [btw ? at least a dead dog does not fight you when you stick the cotton
bud
> in to its ears! Try doing an alive Alaskan malamute! ]
>
>
> Andrew
>
> --
> Andrew Shortell
>
> Heidelberg Teaching Unit
> Ph 9470 3403
> Fax 9470 3215
>
> c/o Reservoir High School
> 855 Plenty Rd
> Reservoir 3073
>
>
>
> On 9/03/11 1:21 PM, "Mark KELLY" <kel at mckinnonsc.vic.edu.au> wrote:
>
> *SD U3O1 KK04
> Purposes and functions of the physical layer (Layer 1) of the OSI and the
> relationship of the physical layer to the Transmission Control
> Protocol/Internet Protocol model
> *
> For quite some time now I've been avoiding this KK because I'd rather
clean
> a dead dog's ears than spend time on the OSI.
>
> But in the end I had to find the cotton buds and get stuck in, and I think
> I have a reasonable overview of the OSI and how TCP/IP maps to it. (even
> produced a draft slideshow <http://www.vceit.com/slideshows/SD-OSI.ppt> ).
>
>
> But the second part of KK04 really has me baffled: *the relationship of
> the physical layer to the Transmission Control Protocol/Internet Protocol
> model.
> *I know that TCP/IP's Network interface layer maps to OSI's physical layer
> (and the data link layer), but for the life of me I can't see how it's any
> more significant than any of OSI's or TCP/IP's other layers.
>
> Can someone suggest why the relationship between the OSI physical layer
and
> TCP/IP is so significant?
> Has this relationship been in the papers? Has this physical relationship
> resulted in offspring?
> Is Mr OSI going to be on Oprah... or the Jerry Springer show?
>
>
> _______________________________________________
> http://www.edulists.com.au - FAQ, Subscribe, Unsubscribe
> IT Software Development Mailing List kindly supported by
> http://www.vcaa.vic.edu.au - Victorian Curriculum and Assessment Authority
> and
> http://www.vcaa.vic.edu.au/vce/studies/infotech/softwaredevel3-4.html
> http://www.vitta.org.au - VITTA Victorian Information Technology Teachers
> Association Inc
>
--
Mark Kelly
Manager of ICT, Reporting, IT Learning Area
McKinnon Secondary College
McKinnon Rd McKinnon 3204, Victoria, Australia
Direct line / Voicemail: +613 8520 9085, Fax +613 9578 9253
kel at mckinnonsc.vic.edu.au
VCE IT Lecture Notes: http://vceit.com
Moderator: IT Applications Edulist
All generalisations are false, except this one.
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Message: 4
Date: Thu, 10 Mar 2011 09:31:04 +1100
From: "Bell, Kenneth C" <bell.kenneth.c at edumail.vic.gov.au>
Subject: [Year 12 SofDev] UCD do have relevance ....
To: <sofdev at edulists.com.au>
Message-ID:
<2A725A8470E90F4C9FDEDF57A0E8D98A0258CA0F at edusm01.education.vic.gov.au>
Content-Type: text/plain; charset="us-ascii"
Hello,
Took my Physics students to Luna Park Physics Day last Thursday.
My I.T students are a subset of the Physics class so I arranged to drop
in at IBM Southbank and meet up with my nephew who is a Project Manager
there.
Not much to see there but he gave a fantastic talk.
He gave a great talk to the students about what IBM does and in
particular what he does. He stressed that as a software engineer, he
considers himself to be like any other engineer in civil, mechanical,
electrical, chemical, environmental, ... He uses I.T. technology to
solve problems.
He stressed the importance of establishing networks of people to help
you solve problems... which is what I think this edulist group does
exceptionally well.
I asked him about UML and in particular, Use Case Diagrams.... He said,
it was a standard practice that all IBM projects used. Students enjoyed
hearing this as it gave extra validation to why we are studying it.
Ken Bell
Mortlake College
Phone 03 5599 2204
Fax 03 5599 2503
Email: bell.kenneth.c at edumail.vic.gov.au
<mailto:bell.kenneth.c at edumail.vic.gov.au>
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_______________________________________________
sofdev mailing list
sofdev at edulists.com.au
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End of sofdev Digest, Vol 72, Issue 28
**************************************
------------------------------
Message: 2
Date: Thu, 10 Mar 2011 15:04:42 +1100
From: "Anna Gulyas" <ag at parkwood.vic.edu.au>
Subject: [Year 12 SofDev] I need a school to join up with
To: "'Year 12 Software Development Teachers' Mailing List'"
<sofdev at edulists.com.au>
Message-ID: <01aa01cbded8$48e23e80$daa6bb80$@parkwood.vic.edu.au>
Content-Type: text/plain; charset="us-ascii"
I will only have 4 students so am looking for a school who I could merge
with for assessments.
I am using "Software Development - Core techniques and Principles" (Adrian
Janson) as the text.
Programming language is VB.net and using the Adrian Janson VB.net text as
well
Anybody interested in joining up please email me.
Anna Gulyas
ICT Leader
Parkwood secondary College
North Ringwood
Phone: 9876 1633
Fax: 9879 0456
ag at parkwood.vic.edu.au
Hear and you forget; see and you remember; do and you understand.
Confucius
-----Original Message-----
From: sofdev-bounces at edulists.com.au [mailto:sofdev-bounces at edulists.com.au]
On Behalf Of Russell Quinn
Sent: Thursday, 10 March 2011 12:55 PM
To: sofdev at edulists.com.au
Subject: Re: [Year 12 SofDev] Physical Layer
According to wiki, the physical layer is much more than a pipe:
"
The major functions and services performed by the Physical Layer are:
Bit-by-bit or symbol-by-symbol delivery
Providing a standardized interface to physical transmission media, including
Mechanical specification of electrical connectors and cables, for example
maximum cable length Electrical specification of transmission line signal
level and impedance Radio interface, including electromagnetic spectrum
frequency allocation and specification of signal strength, analog bandwidth,
etc.
Specifications for IR over optical fiber or a wireless IR communication link
Modulation Line coding Bit synchronization in synchronous serial
communication Start-stop signalling and flow control in asynchronous serial
communication Circuit switching Multiplexing Establishment and termination
of circuit switched connections Carrier sense and collision detection
utilized by some level 2 multiple access protocols Equalization filtering,
training sequences, pulse shaping and other signal processing of physical
signals Forward error correction[2] for example bitwise convolutional coding
Bit-interleaving and other channel coding The Physical Layer is also
concerned with Bit rate Point-to-point, multipoint or point-to-multipoint
line configuration Physical network topology, for example bus, ring, mesh or
star network Serial or parallel communication Simplex, half duplex or full
duplex transmission mode Autonegotiation "
Regards,
Russell Quinn
________________________________________
From: sofdev-bounces at edulists.com.au [sofdev-bounces at edulists.com.au] On
Behalf Of sofdev-request at edulists.com.au [sofdev-request at edulists.com.au]
Sent: Thursday, 10 March 2011 9:31 AM
To: sofdev at edulists.com.au
Subject: sofdev Digest, Vol 72, Issue 28
Send sofdev mailing list submissions to
sofdev at edulists.com.au
To subscribe or unsubscribe via the World Wide Web, visit
http://www.edulists.com.au/mailman/listinfo/sofdev
or, via email, send a message with subject or body 'help' to
sofdev-request at edulists.com.au
You can reach the person managing the list at
sofdev-owner at edulists.com.au
When replying, please edit your Subject line so it is more specific than
"Re: Contents of sofdev digest..."
Today's Topics:
1. Re: SD key knowledge (Andrew Shortell)
2. Re: SD key knowledge (malcolm)
3. Re: SD key knowledge (Mark KELLY)
4. UCD do have relevance .... (Bell, Kenneth C)
----------------------------------------------------------------------
Message: 1
Date: Wed, 09 Mar 2011 20:18:23 +1100
From: Andrew Shortell <shortell at get2me.net>
Subject: Re: [Year 12 SofDev] SD key knowledge
To: "Year 12 Software Development Teachers' Mailing List"
<sofdev at edulists.com.au>
Message-ID: <C99D910F.3A41%shortell at get2me.net>
Content-Type: text/plain; charset="iso-8859-1"
Hi Mark
[nice ppt btw]
Each and EVERY member of the study design panel should be able to clearly
and unequivocally, definitively answer your question because they put it in
the study design. It did not get there by accident. All members of the panel
are responsible for the document...
Members of the panel discuss (and read) the document and have the
opportunity to clarify anything that they do not understand.
Just occasionally something gets missed ... That is why we have errata and
corrections published (and I know all about those!)
If it is not an errata the there must be a definitive answer so let?s just
ask the panel to provide it rather than us guessing, perhaps not getting it
in the way that the panel intended and absolutely missing what the exam
setting panel might think. We do NOT want the exam setting panel to receive
a torrent of unwarranted adverse comments.
As mature sensible professionals we should all be working towards a common
set of understandings that are generously shared (as per this list).
[btw ? at least a dead dog does not fight you when you stick the cotton bud
in to its ears! Try doing an alive Alaskan malamute! ]
Andrew
--
Andrew Shortell
Heidelberg Teaching Unit
Ph 9470 3403
Fax 9470 3215
c/o Reservoir High School
855 Plenty Rd
Reservoir 3073
On 9/03/11 1:21 PM, "Mark KELLY" <kel at mckinnonsc.vic.edu.au> wrote:
> SD U3O1 KK04
> Purposes and functions of the physical layer (Layer 1) of the OSI and
> the relationship of the physical layer to the Transmission Control
> Protocol/Internet Protocol model
>
> For quite some time now I've been avoiding this KK because I'd rather
> clean a dead dog's ears than spend time on the OSI.
>
> But in the end I had to find the cotton buds and get stuck in, and I
> think I have a reasonable overview of the OSI and how TCP/IP maps to
> it.? (even produced a draft slideshow
<http://www.vceit.com/slideshows/SD-OSI.ppt> ).
>
> But the second part of KK04 really has me baffled: the relationship of
> the physical layer to the Transmission Control Protocol/Internet Protocol
model.
> I know that TCP/IP's Network interface layer maps to OSI's physical
> layer (and the data link layer), but for the life of me I can't see
> how it's any more significant than any of OSI's or TCP/IP's other layers.
>
> Can someone suggest why the relationship between the OSI physical
> layer and TCP/IP is so significant??
> Has this relationship been in the papers?? Has this physical
> relationship resulted in offspring?
> Is Mr OSI going to be on Oprah... or the Jerry Springer show?
-------------- next part --------------
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------------------------------
Message: 2
Date: Wed, 9 Mar 2011 21:42:01 +1100
From: "malcolm" <mjarb at iname.com>
Subject: Re: [Year 12 SofDev] SD key knowledge
To: "'Year 12 Software Development Teachers' Mailing List'"
<sofdev at edulists.com.au>
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAAGPyxeBNO0ZNiMTNYNVfeQuijQAAEAAAAHIOE31DkNhHrDR83BHj
4fQBAAAAAA==@iname.com>
Content-Type: text/plain; charset="us-ascii"
Hi,
Just adding to the conversation,
The physical layer is just that - the actual cable, whether cat 5 or other.
As you progress up the layers, the data link layer is your protocols for
your network card to get the signals on and off the cable and the next layer
up (the network layer) is where the data gets formed into packets and
addressed - logical address/Mac address.
After that the transport layer is where the data gets chunked for
transmission or reassembled on reception into a data stream.
Most people talk about TCP/IP as if they were together yet they each
represent a different layer in the OSI model. TCP being in one layer and IP
in the other.
The only reason I see them as being important is that they flow down from
the above layers to allow the data stream to be broken down into packets,
addressed, etc so they can go out on the cable or visa versa.
Each layer is as important as the one above or below. If one layer doesn't
function correctly then the data can be lost or not sent/received/corrupted,
etc.
We can use different tests to test the layers in a network - ping as an
example - ping a domain name - www.microsoft.com, ping localhost, or ping a
specific ip address on a network to check that different layers e.g link,
etc are working correctly.
This link may be of useful reference http://tools.ietf.org/html/rfc1122
Regards
Malcolm Carson
Glenmore Park High School, NSW
-----Original Message-----
From: sofdev-bounces at edulists.com.au [mailto:sofdev-bounces at edulists.com.au]
On Behalf Of David Dawson
Sent: Wednesday, 9 March 2011 1:37 PM
To: sofdev at edulists.com.au
Subject: Re: [Year 12 SofDev] SD key knowledge
My guess is that it means the 'physical layer' relates to 'network
standards' in Hardware, like the electronics and microtechnology in modems
and network cards, SIMS etc; connections like CAT 5 and 802.11 wireless
transmission - which then must send packets via a standard communication
protocol (TCP/IP) for transmission of data across the Internet and LANs.
Hence this relationship points to a universal standard for Internet
connection devices.
Let me know if I am warm .....
David Dawson
Head of Information Technology Learning Area Head of Learning Technologies
St Kilda Rd Campus Wesley College
577 St Kilda Rd
Melbourne 3004
Ph 8102 6340
Mob 0425 718147
>>> sofdev-bounces at edulists.com.au 03/09/11 1:21 PM >>>
SD U3O1 KK04
Purposes and functions of the physical layer (Layer 1) of the OSI and the
relationship of the physical layer to the Transmission Control
Protocol/Internet Protocol model
For quite some time now I've been avoiding this KK because I'd rather clean
a dead dog's ears than spend time on the OSI.
But in the end I had to find the cotton buds and get stuck in, and I think I
have a reasonable overview of the OSI and how TCP/IP maps to it.
(even produced a draft slideshow).
But the second part of KK04 really has me baffled: the relationship of the
physical layer to the Transmission Control Protocol/Internet Protocol model.
I know that TCP/IP's Network interface layer maps to OSI's physical layer
(and the data link layer), but for the life of me I can't see how it's any
more significant than any of OSI's or TCP/IP's other layers.
Can someone suggest why the relationship between the OSI physical layer and
TCP/IP is so significant?
Has this relationship been in the papers? Has this physical relationship
resulted in offspring?
Is Mr OSI going to be on Oprah... or the Jerry Springer show?
--
Mark Kelly
Manager of ICT, Reporting, IT Learning Area McKinnon Secondary College
McKinnon Rd McKinnon 3204, Victoria, Australia Direct line / Voicemail: +613
8520 9085, Fax +613 9578 9253 kel at mckinnonsc.vic.edu.au
VCE IT Lecture Notes: http://vceit.com
Moderator: IT Applications Edulist
All generalisations are false, except this one.
____________________________________________________________________________
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------------------------------
Message: 3
Date: Thu, 10 Mar 2011 08:22:45 +1100
From: Mark KELLY <kel at mckinnonsc.vic.edu.au>
Subject: Re: [Year 12 SofDev] SD key knowledge
To: "Year 12 Software Development Teachers' Mailing List"
<sofdev at edulists.com.au>
Message-ID:
<AANLkTikdR+go8sX2vxnwusfFuGXsJ_9aoZWSqpVMm+nB at mail.gmail.com>
Content-Type: text/plain; charset="windows-1252"
Hi Andrew. I just wanted to eliminate the very real possibility that I had
missed a blindingly obvious reason for the key knowledge being included.
>From your reply, it seems that you can't see its relevance either.
In that case, I'll escalate the enquiry and report back...
Cheers
Mark
On 9 March 2011 20:18, Andrew Shortell <shortell at get2me.net> wrote:
> Hi Mark
>
> [nice ppt btw]
>
> Each and EVERY member of the study design panel should be able to
> clearly and unequivocally, definitively answer your question because
> they put it in the study design. It did not get there by accident. All
> members of the panel are responsible for the document...
> Members of the panel discuss (and read) the document and have the
> opportunity to clarify anything that they do not understand.
> Just occasionally something gets missed ... That is why we have errata
> and corrections published (and I know all about those!)
>
> If it is not an errata the there must be a definitive answer so let?s
> just ask the panel to provide it rather than us guessing, perhaps not
> getting it in the way that the panel intended and absolutely missing
> what the exam setting panel might think. We do NOT want the exam
> setting panel to receive a torrent of unwarranted adverse comments.
>
> As mature sensible professionals we should all be working towards a
> common set of understandings that are generously shared (as per this
list).
>
>
> [btw ? at least a dead dog does not fight you when you stick the
> cotton bud in to its ears! Try doing an alive Alaskan malamute! ]
>
>
> Andrew
>
> --
> Andrew Shortell
>
> Heidelberg Teaching Unit
> Ph 9470 3403
> Fax 9470 3215
>
> c/o Reservoir High School
> 855 Plenty Rd
> Reservoir 3073
>
>
>
> On 9/03/11 1:21 PM, "Mark KELLY" <kel at mckinnonsc.vic.edu.au> wrote:
>
> *SD U3O1 KK04
> Purposes and functions of the physical layer (Layer 1) of the OSI and
> the relationship of the physical layer to the Transmission Control
> Protocol/Internet Protocol model
> *
> For quite some time now I've been avoiding this KK because I'd rather
> clean a dead dog's ears than spend time on the OSI.
>
> But in the end I had to find the cotton buds and get stuck in, and I
> think I have a reasonable overview of the OSI and how TCP/IP maps to
> it. (even produced a draft slideshow
<http://www.vceit.com/slideshows/SD-OSI.ppt> ).
>
>
> But the second part of KK04 really has me baffled: *the relationship
> of the physical layer to the Transmission Control Protocol/Internet
> Protocol model.
> *I know that TCP/IP's Network interface layer maps to OSI's physical
> layer (and the data link layer), but for the life of me I can't see
> how it's any more significant than any of OSI's or TCP/IP's other layers.
>
> Can someone suggest why the relationship between the OSI physical
> layer and TCP/IP is so significant?
> Has this relationship been in the papers? Has this physical
> relationship resulted in offspring?
> Is Mr OSI going to be on Oprah... or the Jerry Springer show?
>
>
> _______________________________________________
> http://www.edulists.com.au - FAQ, Subscribe, Unsubscribe IT Software
> Development Mailing List kindly supported by
> http://www.vcaa.vic.edu.au - Victorian Curriculum and Assessment
> Authority and
> http://www.vcaa.vic.edu.au/vce/studies/infotech/softwaredevel3-4.html
> http://www.vitta.org.au - VITTA Victorian Information Technology
> Teachers Association Inc
>
--
Mark Kelly
Manager of ICT, Reporting, IT Learning Area McKinnon Secondary College
McKinnon Rd McKinnon 3204, Victoria, Australia Direct line / Voicemail: +613
8520 9085, Fax +613 9578 9253 kel at mckinnonsc.vic.edu.au
VCE IT Lecture Notes: http://vceit.com
Moderator: IT Applications Edulist
All generalisations are false, except this one.
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Message: 4
Date: Thu, 10 Mar 2011 09:31:04 +1100
From: "Bell, Kenneth C" <bell.kenneth.c at edumail.vic.gov.au>
Subject: [Year 12 SofDev] UCD do have relevance ....
To: <sofdev at edulists.com.au>
Message-ID:
<2A725A8470E90F4C9FDEDF57A0E8D98A0258CA0F at edusm01.education.vic.gov.au>
Content-Type: text/plain; charset="us-ascii"
Hello,
Took my Physics students to Luna Park Physics Day last Thursday.
My I.T students are a subset of the Physics class so I arranged to drop in
at IBM Southbank and meet up with my nephew who is a Project Manager there.
Not much to see there but he gave a fantastic talk.
He gave a great talk to the students about what IBM does and in particular
what he does. He stressed that as a software engineer, he considers himself
to be like any other engineer in civil, mechanical, electrical, chemical,
environmental, ... He uses I.T. technology to solve problems.
He stressed the importance of establishing networks of people to help you
solve problems... which is what I think this edulist group does
exceptionally well.
I asked him about UML and in particular, Use Case Diagrams.... He said, it
was a standard practice that all IBM projects used. Students enjoyed hearing
this as it gave extra validation to why we are studying it.
Ken Bell
Mortlake College
Phone 03 5599 2204
Fax 03 5599 2503
Email: bell.kenneth.c at edumail.vic.gov.au
<mailto:bell.kenneth.c at edumail.vic.gov.au>
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