Category Archives: Revision

1. Computer Systems, FAQ, Revision

FAQ – Hub or Switch

Simple description  of the functions  and  uses of a hub, switch and router

  • Hub
    • A Hub is a multi-port repeater. That means that data coming into one port is sent out of all other ports. This can result in congestion on the network as machines are swamped with data that id not for them, resulting in a slow down of network performance. A 100Mbps hub shares this with all machines, so each machine only gets a fraction of the speed.
  • Switch
    • A switch keeps a database of each machine on the network and which port of the switch they are connected to. These collision domains are controlled by the switch, which then results in a reduction of the number of collisions increasing the overall speed of the network. A 100Mbps switch gives each machine 100Mbps.
  • Router
    • A router is a device with two network cards that is responsible for routing data from one network to another. It does this by keeping track of IP addresses of computers on the networks and forwarding packets appropriately.

Remember the warriors of the net video is a good lead in, but look up the terms online.

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Computing Higher, Revision

Games to pass the time

OK so you are past paper’ed out and couldn’t read another paragraph or write another flash card.

Well its quiz time, you can even try and check your glossary skills. Crosswords might be your thing. If you are going to go ofline for a bit then print out some sheets for later.

Quizes are great but they are even better when you learn from them, so keep a note of the ones you get wrong and search for them as part of your study. Build in quizzes to your study or make your own.

Continue reading Games to pass the time →

Computing Higher, NAB, Revision

Question make up

The higher paper is made up of both KU and PS questions, just like the standard grade. If you don’t believe it have a look in a marking scheme.

The image above is taken from the arrangements document, it gives you a list of keywords you can use to identify KU & PS questions. Remember that it is important to answer all questions in the context they were given. So for a question about “surequickfit”, you should mention “surequickfit” in your answer as well as relate to their problem. The breakdown of the assessment is below. Continue reading Question make up →

Computing Higher, Revision

Newspaper Exam Guides

Well the Sunday papers have all had a exam guide or two in them. If you missed them then ask about, you might find an aunt or uncle keeping a copy “just in case”

A few of these have been published online over the past few years, but remember before you go searching the net for them, that the computing exam changed in 2005 (other subjects may have changed as well), so be careful to get the right one. I have one or two copies in school and found this one in Dundee.

1. Computer Systems, 2. Software Development, Computing Higher, Flash Based Learning, Revision

Departmental Area

OK here is are the links from there, so far.

Topic 2 – Computer Structure
Topic 4 – Peripherals
Topic 5 – Networks
Topic 6 – Using Network
Topic 7 – Computer Software