[Year 12 IT Apps] VITTA ITA exam 2 - my ideas of errata

Mon Oct 15 15:14:12 EST 2007

Mark
I wonder, are there 2 sets of papers and suggested answers out there?

For Question 3, my question paper said:
"Which type of backup only includes those files that have changed since the 
last full backup of the system?"

Based on my paper, for question 3 you have altered the question, hence your 
question.  Differential backup is correct, as it correctly answers the 
question.  Incremental backups may be done daily and each incremental backup 
will be the backup since the last Full backup and the previous incremental 
backup/s.  (Incremental could be correct if it was the first incremental 
backup since the full backup - but let's not add to the question.)
In Short Answer Question 5 the suggested answers I received from VITTA were:

ModelID = Integer

ModelStreetAddress = Text  (There is no alphanumeric data type for Access, 
text allows the use of alphanumeric characters)

ModelHomePhone = Text

ModelMobilePhone = Text

For 5b, the suggested VITTA answers in my set were:

      Validation rule: (>=3000 and <=3999) or (>=8000 and <=8999)

      Validation text: Please enter a postcode beginning with a 3 or an 8.

This agrees with your contention.

Question 11
a.  Physical security measures
Mark said:
> Suggested answer:
>
> • A voice recognition device can be used to authorise users to access
> rooms, equipment or information.
>
> Physical?  Electronic, surely!  And not a very sensible option, if you
> ask me.

Voice recognition was listed in logical, not physical, security measures in 
the suggested answers.

Mark adds:
> These all seem inappropriate for such a small setup.  What about locked
> doors, barred windows?

and I concur

Question 11 c.  suggested answer was:
Software: If a server is purchased to act as a central storage location for 
the network, a network operating system would be a good addition. This 
software controls the traffic on the network and defines how the devices 
connected in the network will communicate with each other.

Other software may include: email, file transfer protocol, Internet browser

For Question 11d. the question in my set of exam papers was:
d. Explain how Privacy legislation impacts upon Adam’s security and storage 
measures.

  However the suggested answer included reference to the Privacy Amendment 
(Private Sector) Act 2000.

Question 12:
Mark said:
> The answer is a bit of a mess.
> Tasks B and D are 14 weeks in the chart, not 6 as in the data.
> This pushes tasks E and I way too far late.

In the chart and data tasks B and D were 6 weeks each in my qusetion paper, 
but task I was 5 weeks, not 4 in the chart.

Question 12b.
> b. Which task cannot begin without others being finished?
> Suggested answer: J
>
> An unfair question.  I assume the “S” on the end of “others” demands a
> task that has more than one predecessor.  It should say so.  To be fair
> it should ask which task has to wait for more than one other task to
> finish before it can begin.  I bet 99% of kids would be confused and say
> that there are 6 viable tasks.

I fully concur.

Hence my starting question: I wonder, are there 2 sets of papers and 
suggested answers out there?
Raise you 3 cents!
Geoff Moss

RMIT

--------------------- 

----- Original Message ----- 
From: "Mark Kelly" <kel at mckinnonsc.vic.edu.au>
To: "Year 12 IT Applications Teachers' Mailing List" 
<itapps at edulists.com.au>
Sent: Monday, October 15, 2007 1:36 PM
Subject: [Year 12 IT Apps] VITTA ITA exam 2 - my ideas of errata

> Hi all.  I could not find errata for VITTA ITA exam 2 on the VITTA site,
> so here are my thoughts.  Take them as you will.  I don't aim to offend.
>
> --
>
> VITTA ITA Practice Exam 2
>
> SECTION A – Multiple-choice
>
> Question 1
> Which of the following enables several LANS to connect over a WAN?
> Suggested answer: D. Router.
>
> A router protects a LAN from the outside world, but its role is not
> principally to enable communications.  I suspect the best answer would
> be a modem.
>
> Question 3
> Which type of backup uses two sets of backup media and backs up the most
> recent changes on the second media?
> Suggested answer: B. Differential.
>
> This can’t be right.,  The question is very odd.  Two sets of backup
> media? From http://www.backuptool.com/incremental%20backup.htm...
>
> "three backup modes:
> • Full: All files that match your selection are included into the backup.
> • Incremental: Only those files will be included which have been changed
> since the last backup.
> • Differential: Only those files will be included which have been
> changed since the last FULL backup."
>
> Question 4
> The main purpose of validating a solution is to
> Suggested answer: C. Ensure that data entered into the computer is
> correct and complete.
>
> No!  Validation ensures data is reasonable, not correct!
>
> Question 5
> The manager of Nail Nirvana needs to decide whether one of the nail
> technicians can take holiday leave in
> October. What type of decision needs to be made?
> Suggested answer: B. Tactical.
>
> I’d argue operational.  It’s a pretty low-level decision, and not aimed
> to accomplish a larger strategic goal.
>
> Question 6
> A real estate agency that is closing down would like to sell its client
> database to another agency in order to recoup some of its losses. What
> privacy legislation should influence the real estate agency’s decision?
> Suggested answer: A. Privacy Amendment (Private Sector) Act 2000.
>
> No. The amendments are no longer part of the laws to be discussed in
> ITA.  Refer to the definition of “Legal obligations” in the study
> design, page 50.
>
> Question 12
> Which form of documentation is not usually provided in on-line form?
> Suggested answer: B. User manual.
>
> This is strange.  I’ve seen many online user manuals.  And does “online”
> mean “on the internet”, or just “electronic”?  There’s a big difference.
>  If  it’s properly interpreted as “on the internet” then the answer is
> clearly “tool tips” or “context-sensitive” which are not used in a
> website.  I’ve hardly ever seen quick-start guides online.  In fact,
> “user manual” is the worst possible answer of the 4.
>
> Question 20
> Two widely used formats for on-screen user documentation are
> Suggested answer: A. PDF and Hypertext.
>
> PDF is primarily designed, AFAIK, as a printable format!  It lacks most
> of the distinctive features of documentation that is primarily designed
> to be viewed onscreen, such as animation, hyperlinks, transitions etc.
>
> SECTION B – Short answer Questions
>
> Question 1
> Explain how a modem enables users to access the Internet.
>
> Sample answer: A modem modulates digital data it receives from a
> computer into an analog signal so that it can be transported over
> telephone lines. The receiving modem demodulates the analog signal
> received from the telephone line into a digital signal so that the
> receiving computer can receive it. This “translation” of signals is
> required so that communication across the Internet can take place.
>
>
> A modem is, for most people today, a digital device for ADSL or cable
> internet that has no modulation or demodulation happening!  The question
> should have referred to analogue modems if it wanted this answer.
>
>
> Question 5
> Marvellous Modelling wants to keep a database of its models and intends
> to set up the following fields:
>
> Field Data Type
> ModelId Primary Key
>
> No.  A primary key is not a data type
>
> ModelFirstName Text
> ModelLastName Text
> ModelStreetAddress Alphanumeric
>
> Which DBMS offers alphanumeric type? Text type is used for pure text or
> typable characters (i.e. alphanumeric)
>
> ModelPostcode Number
> ModelHomePhone Number
> ModelMobilePhone Number
>
> Arghhh, no.  Phone numbers should not be stored as numbers.  They
> exclude characters like spaces, parentheses, + for international dialing
> etc.
>
> b. Determine validation rules and validation text for two of the fields.
> Field: ModelPostcode
> Suggested answer: Validation rule: >=3000 and <=3999
>
> A quibbly 'No': New Melbourne postcodes include numbers in the 8000 range.
>
> Validation text: Please enter a postcode beginning with 3.
>
> Field: ModelHeight
>
> Suggested answer: Validation rule: >=165
> Suggested answer: Validation text: Please enter a number greater than or
> equal to 165
>
> A silly rule, if you ask me.  Models MUST be tall nowadays?  Including
> hand models and child models?
>
> Question 11
> Adam, an accountant and owner of a growing taxation business is
> concerned about the security of his data as his clientele base expands.
> Currently, Adam and his wife Anna (who is also an accountant) work on
> standalone computers and save their data daily to the hard drive and
> then back up the week’s data on CD every Saturday morning. The CD’s are
> kept in a locked safe in their house. Adam and Anna also have individual
> Internet and email access. Adam has a broadband connection while Anna’s
> Internet connection is dial up and ties up the family phone when she is
> using it. Adam has begun advertising for an assistant to help them with
> administrative tasks such as producing business correspondence,
> answering the phone, photocopying, etc.
>
> a. Suggest and describe two physical and two logical security measures
> that Adam can employ to protect the data.
>
> Physical security measures
>
> Suggested answer:
>
> • A voice recognition device can be used to authorise users to access
> rooms, equipment or information.
>
> Physical?  Electronic, surely!  And not a very sensible option, if you
> ask me.
>
> • Multiple copies of backup should be made and kept off site. One copy
> is not sufficient if theft or damage occurs in the house.
>
> Backups are not security; certainly not physical security!
>
> • Video surveillance would also be a useful security measure. Video
> cameras capture the activity in the house.
>
> These all seem inappropriate for such a small setup.  What about locked
> doors, barred windows?
>
> c. Identify one software item and one hardware item that will be
> required in setting up the network and explain their role or usefulness
> in the network.
>
> Suggested answer: Software: the most essential software for a network is
> the network operating system. This software controls the traffic on the
> network and defines how the devices connected in the network will
> communicate with each other.
>
> Only if they need a server – which I’d say they would not.
>
> d. Explain how the Privacy Amendment (Private Sector) Act 2000 impacts
> upon Adam’s security and storage measures.
>
> Again, this amendment is not used in ITA.
>
>
> Question 12
> "The organisation Gems & Jewels would like to develop a database to keep
> track of all the different items of jewellery they have in stock. The
> management have written down the tasks which are required to construct
> the database and have added the time each is expected to take and which
> tasks cannot begin without others being finished."
>
> The answer is a bit of a mess.
> Tasks B and D are 14 weeks in the chart, not 6 as in the data.
> This pushes tasks E and I way too far late.
> It should look like this:  (see attachment)
>
> b. Which task cannot begin without others being finished?
> Suggested answer: J
>
> An unfair question.  I assume the “S” on the end of “others” demands a
> task that has more than one predecessor.  It should say so.  To be fair
> it should ask which task has to wait for more than one other task to
> finish before it can begin.  I bet 99% of kids would be confused and say
> that there are 6 viable tasks.
>
> ---
>
> Let me see, that makes about 18c worth.
>
> Any other opinions out there?
>
> -- 
> Mark Kelly
> Manager - Information Systems
> McKinnon Secondary College
> McKinnon Rd McKinnon 3204, Victoria, Australia
> Direct line / Voicemail: 8520 9085
> School Phone +613 8520 9000
> School Fax +613 95789253
> kel AT mckinnonsc.vic.edu.au
>
> Webmaster - http://www.mckinnonsc.vic.edu.au
> IT Lecture notes: http://vceit.com
> Moderator: IT Applications Mailing List
>
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> all the money they need and the Air Force has to run a chook raffle to
> buy a new bomber.
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