Scholar homework session on Wednesday 25th at 7.30pm
This session covers the CPU, the fetch execute cycle and addressable memory calculations
How to Join
Follow the session link up to 30 minutes before the published start time. Enter the session as a guest using your forename or a nickname. All sessions are recorded for use on the SCHOLAR site so please do not share any personal information. Please note that the online room is limited to 100 participants so join in early to avoid disappointment!
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This homework session covers the option networking unit. This is not the optional unit we are studying this year. However, you might find it useful for a recap of the networking topic in Computer Systems.
Again this optional.
Ian King will be running a Scholar homework session this Wednesday 28th Jan at 7.30 pm til around 8.15.
The topic is Storing numeric data (binary, two’s complement and floating point notation)
You can access the session, which will last about an hour at
The Higher Prelim will be in the Hall from 1:30- 3:00 on Wednesday the 14th of January 2015. Make sure you bring a black pen and a calculator.
Q1 Explain the difference between LAN’s and WAN’s with reference to transmission media, bandwidths and geographical spread. (2)
Q2 Explain the difference between a mainframe computer with terminals and a network of computers. (2)
Q3 Explain the differences between client server and peer-to-peer networks. (2)
Q4 On a LAN describe the functions of file, print and web servers. (2)
Q5 Describe a bus topology in terms of nodes and channels. Describe the consequences of failure of a node and a channel. (2)
Q6 Describe the functions of a hub, switch and router on a network with particular reference to the differences between a hub and a switch. (3)
Q7 Explain why a network computer needs a network interface card (NIC). (1)
Q8 Explain briefly why networks are becoming increasingly widespread. (2)
Q9 Explain how a virus may be spread to a computer and how it then may take effect. (2)
Q10 The access a user has on the network depends on their permissions. Explain what is meant by permissions giving as an example the permissions you may have on your own folder and a shared folder on the network. (2)
Total Marks – 20
Scholar will be presenting a Scholar webina
r on Wednesday 3rd December. 7.30 pm to 8.15
This one is on Procedures, Functions and Parameters.
Q1 A peripheral device captures colour images and saves them to memory.
a) Describe how the colour is represented using 24 bits (1)
b) The image is saved with a resolution of 600 dpi. How many pixels are required to save an image of 6” x 4”. Give your answer in MB and show your working. (2)
Q2 Explain how a buffer is used with a peripheral. (2)
Q3 Explain the concept of spooling illustrating your answer with an example. (2)
Q4 State the hardware required in terms of peripherals to set up a computer system to produce a catalogue for a garden centre. The finished catalogue will be taken on electronic media to a printers. (2)
Q5 Justify the choice of two of these devices in terms of resolution, capacity, speed, cost and compatibility. (4)
Q6 Describe the features, uses and advantages of a solid state device such as a USB flash drive. (2)
Q7 a) What is the purpose of an interface? (1)
b) State the factors that have to be resolved by an interface. (2)
Q8 Describe the difference between parallel and serial interfaces (2)
Total marks 20