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

Tue Oct 16 08:17:50 EST 2007

Thanks, Antonia.  That makes sense  :-)

Antonia Caridi wrote:
> Mark - updated exams were sent out before the holidays - you are working from first version which had some errors so your comments relate to older versions.
> 
> Antonia
> 
> Antonia Caridi
> Sacre Coeur
> 172 Burke Road
> Glen Iris 3146
> Telephone 9885 4501
> Fax 9885 5936
> 
> 
>>>> Mark Kelly <kel at mckinnonsc.vic.edu.au> 15/10/2007 1:36 PM >>>
> 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
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