Some thoughts
You probably all over this by now and past caring but…
I have taught IPT for 5 years now and don’t claim to fully understand how the BOS marks sometimes but I will go out on a limb and the following would be my answers:
Italic Quotes are from the syllabus and should be considered the BOS “Solution”
1 A - Data Flow Diagram
“use system design tools to:
* better understand the system
* assist in explaining the operation of the new system
* document the new system”
Participant background is potentially important but I would argue it should be irrelevant as the manual should be usable by anyone.
4 D
I could provide arguments for A, C and D here. In reality digital signals are transmitted in analog form (waves) and technically there is no such thing as a digital wave. Therefore both A and C could be technically correct. But the keyword in the question is digital and digital signals have discrete points such as those in answer D. This along with the fact that you cant have both A and C as correct the answer should be D.
6 A – User Only maybe C
“participants - the people who carry out the information processes within the information system”
I am unsure of how the BOS thinks of the customer. While the customer is involved in several information processes I believe the BOS might not consider the customer to be “within” the system. C is possible though as he does have direct contact with the hardware and I haven’t found any texts that clarify one way or the other. Not a nice question and it is very close to a 50/50.
9 B screens (Maybe C)
Higher frequency may allow the transmission of more bits in a signal but strictly speaking this is wrong because higher transmission rates is only offered by a "broader" frequency. Colour screens would only be required for viewing colour photos. You could also argue that you could still transmit photos at the slower speed so it is probably B - . Another 50/50.
15A Switch Hub Router
Brent is correct in all that he says
Hub – multiport connector with shared bandwidth across the ports (all ports share in the 100MB). It is shared because every message gets sent to every port. Not good for linking networks
Switch – Multiport connector with individual bandwidth for each port (each port gets 100Mb each) Higher bandwidth is required at that location because it joins multiple hubs. Cannot use IP addresses to deliver data though.
Router – Connects networks and uses IP addressing to deliver communications across distance (eg the Web) . Routers are not slow unless they are overloaded.Routers are the backbone that makes the web work, hubs and switches CANNOT be used for this purpose as they cannot use Ip addresses to deliver communications – only MAC addresses (network card addresses).
This would be the CISCO solution for those who know anything about Cisco
16 B
This is the only one that has all the correct symbols – online input, telecommunications, online display, process etc. The others have multiple errors in them.
17 C (One to Many, One to Many, Many to One)
An unusual question but heres what I think. Relationships are between tables not attributes. The attribute (barcode) is the same at each end so you cant compare it. Compare the tables like this:
One customer conducts many transactions, one transaction may contain many videos, Many videos of the one movie.
19 A
Checksum sees the expected number of bits and doesn’t detect the error. Parity checking would spot the errors in the first and second byte because they have the incorrect number of 1’s.
I guess we will have to wait for the solutions next year to see the answers for 6 and 9.
