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Networks & the internet. Revision tip: Focus on the things you find difficult first. Task 1. Complete self assessment sheet. Time (minutes) a 2 2. Read through the chapter on networks & the internet. 15 3. Work through the questions on the revision template focusing on weaker areas first. 25 4. Attempt the multiple choice test on Edmodo. 10 5. Attempt the past paper exam questions. 20 6. Mark past paper exam paper questions. 15 7. Read through the chapter on programming. 15 8. Attempt the multiple choice test on Edmodo again. 10 “Every lesson counts – don’t waste a minute.” Network hardware. 1. Describe the purpose of an Network Interface Card (NIC). (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... 2. Distinguish between a network hub and a network switch. (4 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... 3. State three ways in which security can be implemented on a wireless access point. (3 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... Exam tip: There are subtle differences between network hardware components. Make sure you now the details for each. 4. Describe the purpose of a router. (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... 5. What is a network bridge? (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... Types of network. 1. Exam tip: Make sure you realise that servers can be specialised for different uses. 2. State three different uses for a network server. (3 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... Network topologies 1. Explain the difference between a client-server and a peer-to-peer network. (4 marks) ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... Exam tip: Network topologies are common in questions although the star configuration is by far the most common in real life. Explain why bus networks can often be slow. (2 marks) ……………………………………………………... ...…………………………………………………... ……………………………………………………… ...…………………………………………………… ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. 2. State two advantages of a star network over a bus network. (2 marks) ……………………………………………………... ...…………………………………………………... ……………………………………………………… ...…………………………………………………… ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. ............................................................................. Network protocols. 1. Explain what is meant by a network protocol. (3 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ 2. Describe two protocols commonly used on the internet. (4 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... 3. What is a data packet? (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... Exam tip: Make sure you are able to define the term protocol precisely and quote some examples. 4. What is meant by packet switching? (3 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... 5. What is an IP address? (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... 6. What is a MAC address? (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... Network security. 1. Identify three ways in which a catastrophic data loss can occur. (3 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ……………………………………………………............................................ ...................................................................................................................... Exam tip: The most important point to remember in this section is that security can be fine tuned. 4. What does the term failover mean? (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... 5. State three characteristics of a strong password. What needs to be taken into account when deciding on the frequency of taking network backups? (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ (3 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... 3. 6. 2. What is the difference between a backup and an archive? (3 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... State three sensible conditions of an acceptable use policy (AUP). (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... The internet. 1. Exam tip: Make sure you understand that the internet is an Infrastructure and that the world wide web is just one of the services that uses it. What is an internet domain name? (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ 4. Explain the difference between the internet and the world wide web. (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ 2. 5. Which two of the following are legal IP addresses? (2 marks) a) 121.23.1.45 Yes / No b) 256.55.76.8 Yes / No c) 1.1.1.1. Yes / No Explain why someone setting up a new internet connection at home would need a router. (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... Explain what a DSL connection is. (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ 3. 6. What is the purpose of a modem? (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ Internet file standards. 1. Describe the differences between lossy and lossless compression. (4 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ 2. Explain why images are compressed before being included on a photo-sharing website. (3 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... 3. Explain the importance of file standards when including external files on a web page. (2 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ Exam tip: Make sure you understand the difference between different file types and are able to recall examples for each. 4. What is HTML? (3 marks) ……………………………………………………............................................ .................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... ……………………………………………………............................................ ...................................................................................................................... Past paper exam questions. 2011 past paper. Past paper answers. 2011 past paper. Notes: What do I need to improve? Past paper exam questions. 2011 past paper. Past paper answers. 2011 past paper. Notes: What do I need to improve? Past paper exam questions. 2012 past paper. Past paper answers. 2012 past paper. Notes: What do I need to improve? Past paper exam questions. 2013 past paper. Past paper answers. 2013 past paper. Notes: What do I need to improve?
