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Matthew Jobburns P2 and P3

22/10/2010


Matthew Jobburns

22/10/2010

P2 and P3

User side effects (P2) – Page 1 Server side effects (P2) – Page 2 Security risks (P3) – Page 3

Google images – www.google.co.uk/images

P2 and P3 Website performance can be affected by user side and server side. There are things that make it quicker and things that make it slower.


Matthew Jobburns

22/10/2010

P2 and P3 User side The connection speed affects the performance because it affects how fast it loads pages. This is a main factor because if the connection speed is slow, the website will run slow no matter what else is used. Connection speed can be affected by the ISP (Internet Service Provider) and how many people are using it. The hardware used can alter the performance because if a slow computer with low RAM is used, it would mean the internet also runs slowly. Plus, if a cheap wireless router is used, it would make the connection speed slower. Also, if the computer has got a lot of files on it, it would make it run slower. All browsers run at slightly different speeds so the browser used would affect the website performance. Also, some browsers don’t support certain file types so can run slower trying to open them. Plus, some browsers check each webpage to see if they are safe so this slows down the loading. If a computer has a virus, it will slow it down because the virus is trying to do things. Also, viruses can then take the user to other websites and therefore slow the loading down of the website they want to go on. If wireless is used, the distance from the router would also change the connection speed. This is because if it is far away the waves hit other things and only a few make it through. Therefore, the signal strength is low so the connection speed is slower. If there are a lot of programs or browsers open at once, the computer would run all of them with the same amount of speed so they would all have to share the speed. That is why you should close all unused windows. Anti-virus software is normally always running and takes up a lot of the RAM to run so it slows everything else down. The amount of cache memory affects the website performance because if there is a lot of history/cache memory stored, it takes up space on the memory so slows down the running/loading. To stop this taking up a lot of space, it should be deleted regularly. This setting would need to be changed because it is normally set at a long period of time. Malware slows down the internet because it can open pop-ups when the user is on the internet. It then has to load both of these equally. Also, pop-ups usually contain loads of graphics and music. These then take longer to load as they have a bigger file size.

Server side


Matthew Jobburns

22/10/2010

P2 and P3 Internet traffic would slow down the website for everyone using it. This is because the server would have to run the website for whoever is using it, so if there are a lot of people accessing it at the same time, it has to let them all access it. If the hardware used, especially the server is old, it wouldn’t be as powerful so would only be able to cope with a few people accessing the website at the same time. They would then be slower loading than if it was a better server. If the software used to create and run the website is dated, it may not be able to display and run bigger videos and pictures, and also not run certain file types. Therefore, it would display the pictures and videos differently and take ages loading as it may have to convert the file types. The size and type of the files used would affect the website’s performance because if there are big pictures and videos used, it has to load them first and they can take ages. The time it takes does depend on the browser and hardware used as well as the connection speed. If a virus gets onto the website, it can cause it to run slowly because the virus is trying to change things. Also, the virus could upload things onto the website and make it slower because the website is big. Plus, anyone who then uses the website could get the virus and slow the internet down even more. The website would need to be updated regularly. If this maintenance isn’t done, the website’s size would be bigger, thus taking longer to load. This needs to be done because they don’t need to keep old information as it isn’t necessary anymore and it slows the website down. Functionality of the website affects the websites performance because if the website is all crammed together, it will run slower loading those pages because there is more on them. Therefore, the pages should have little on them to run faster.

Security risks


Matthew Jobburns

22/10/2010

P2 and P3 A common risk of using a website is getting your password stolen. This can be stopped by not putting your password on any other website and not telling anyone else your password. Also, having anti-virus software would stop any viruses getting your password. For this they would need an a Plus, An anti-bot could be used to stop robots making accounts and getting other people’s passwords and personal details. All websites are at risk from getting hacked into and having things changed and deleted. This can be stopped by having a secure password to be able to change the website. Also, the server computer would need anti-virus software to stop any viruses getting in and also to stop hackers. The anti-virus software needs to be updated regularly to be able deal with any new threats. This would also need to be done with the user’s anti-virus. An example anti-virus is AVG. There is a free, basic, version of this and a better one that has to be paid for. Another way to protect the website is to have a firewall. This stops people trying to hack into the website and change things. Even with this, the website owner would also need a secure password. Maintenance would need to be done for the software and hardware. This is so they are up to date and can therefore have better protection against viruses. This would also include port blocking An anti-virus would be needed to stop malware, keyloggers, and phishing. These are all threats to websites and their users. They can direct you to certain sites and also get into your personal files and also the website. Some web browsers automatically detect whether a website is safe or not to enter. When the website has been typed into the search bar or clicked on form a search engine, before the page starts loading, it will come up with a page saying that the site may not be safe. It then gives the options of either continuing anyway or returning to the page before.


Matthew Jobburns

22/10/2010

P2 and P3

• Anti-virus – This is a program that stops and kills all viruses on a computer • Browser – The program used to access the internet. This is sometimes called a web browser • Cache memory – This is the storage of the names of visited websites and files • Hardware – The physical parts of a computer. E.g. monitor and screen • Internet traffic – This an amount of people on the internet at the same time • Malware – A type of virus that can redirect the users webpage • Software – The programs installed on the computer

P2 and P3  

P2 and P3 website production