2. Revision Lesson 2

3. Mini Quiz What do the following Abbreviations stand for?  POP  NAP  IP  TCP  FTP  ISP

4. Mini Quiz What do the following Abbreviations stand for?  POP – Point of Presence  NAP – Network Access Point  IP – Internet Protocol  TCP – Transmission Control Protocol  FTP – File Transfer Protocol  ISP – Internet service provider

5. Topics next week  Benefits of VOIP  Data Exchange  Internet infrastructure Search engine  Http why is it better  Software as service cloud computing  Databases

6. VOIP – Voice Over Internet Protocol  Benefits  Being able to contact relatives or business colleagues on the other side of the world.  Online conferences and Meetings - Reduces Travel costs, travel time, avoids the loss of productivity when traveling and the cost of hiring the venue.  Disadvantages  Reliability. VoIP service is dependent on the quality and reliability of your broadband service and may not work if there is a power cut.  Voice quality. Voices can sometimes be distorted or there may be long pauses between questions and answers.  Security. As with all internet technologies, identity theft, viruses, spamming and phishing are all potential threats VOIP – What is it?

7. Packet Switching and Circuit Switching  Circuit – All go in a logical order and follow the same route.  Packet – Goes multiple routes and reassembled at the other end. Youtube Video

8. The Internet Explained in 5 mins  A good video which explains how the internet works to view webpages and how emails are sent. Youtube – The Internet Explained.

9. Protocols  Transmission Control Protocol TCP The protocol which takes data from a user’s application program and passes it to the IP for transfer across the internet. The reverse operation is performed at the destination computer, i.e. the TCP reassembles the data (from individual packets) and forwards them to the user’s application program. The close relation with the IP means that the terms are usually used in combination, i.e. TCP/IP.  File Transfer Protocol FTP A standard protocol which allows " les to be transferred between two computers on a TCP-based network. It is commonly used to download programs to your computer from other servers and to upload web pages that you have created to the server that is hosting them on the internet.

10. Software as service cloud computing  Cloud computing means using computer services on another organisation’s computers, which are known as hosts. The services are provided by organisations known as hosting companies.

11. Databse Recap  Mr Cole want’s to start up his own online “Netflix”  Create a table for his customers and a table for his Films.  Remember to include a Primary Key, Foreign Key and the Data Types.

12. Any Topics you want to cover?

13. Café Applicaciones ! Remember – Put the time in, get the results! Welcome to We have completed this revision part of the lesson, add an entry into your revision booklets, take 5 minutes to unwind, relax and make sure your prepared for the exam NEXT WEEK!. Sit back, have a biscuit, in Café Applicaciones and add an entry to your revision booklet. What to include? Packet / Circuit Switiching Primary and Foreign Keys Protocols Tea and Coffee – Sold Out