Computing Higher

Scholar Homework Session 25th Feb @7:30pm

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!

Most web browsers support Adobe Connect using Adobe Flash Player 11.2+ (full technical specifications at:http://www.adobe.com/uk/products/adobeconnect/tech-specs.html), while Android and iOS apps are available to install on compatible devices. Headphones or speakers are required to listen to the presenter. Please make sure to set up your device in advance. 

1. Computer Systems, Computing Higher

Homework w/b 15th Dec

Networking

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
2. Software Development, Computing Higher

Standard Algorithims

All students and teachers are welcome to attend these Live Online Sessions which are interactive events hosted by subject specialists who have extensive teaching experience.

Each session lasts up to an hour in total, including time for questions and answers towards the end.

Theme: Standard Algorithms
Subjects: Higher Computing
Audience: Student
When: Wednesday, 19 November 2014 7:30 PM
Presented by: Ian King, SCHOLAR Online Tutor for Computing and Information Systems
Session link: http://heriot-watt.adobeconnect.com/scholarhomework (Enter as a Guest)
1. Computer Systems, Computing Higher, Homework

Homework – Topic 4 – Peripherals

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

Coltness High School

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