D2, Task 4, Unit 14

P7: "To send contact information from your phone (Info like your mobile number) to another phone, first you go into your phone's settings and find something like my profile, my number or this phone. Or you could get the number from a person who has your number. 
Add the number and other contact info into a text, whether you type it in or copy and paste (an ability not many phones have) and finally send tat to the person's phone who you want it to be sent to. Or, if your phone has a direct "send to contact" feature for your data, you can select that."

I used this protocol as it allows for quick and easy access to your contact information from your phone. Texting the information on to the recipient is a quick and for the most part safe way of exchanging contact details over long distances. However most phones do not have integrated anti virus software. This means that undetected viruses can be transferred via text, this could then infect the recipients phone. A safer way to exchange contact details is via desktop or laptop, this is because they have build it firewalls and additional anti virus software such as Norton or Macafee can be used to scan emails for legitimacy or any possible viruses. If this were to e used to exchange contact info then you could still find the initial information via the phone's settings.

D2, Unit 35

Compressing files:


Compressed files take up less storage space and can be transferred to other computers more quickly than uncompressed files.You can also combine several files into a single compressed folder. This makes it easier to share a group of files.Some types of files, like JPEG pictures, are already highly compressed. If you compress several JPEG pictures into a folder, the total size of the folder will be about the same as the original collection of pictures. The advantage of compressing an image is that if you are using these images on a website, then they will load faster since the file size will be dramatically reduced.


Graphic file compressors take away pixels. If you take away too many of them, then the quality of your image deteriorates. If one goes too far in the compression, then the picture becomes almost unrecognizable or is too pixelated to be of any use.

TIFF produces large files, but there is no loss in quality. TIFF also preserves layers, alpha transparency, and other special features when saved from Photoshop. BMPs are huge files, but there is no loss in quality, they contain pallettes of 4,294,967,296 possible colors. Use PNG when you need smaller file sizes with no loss in quality. PNG files are usually smaller than TIFFs. GIF files are always reduced to 256 unique colors or less and they make very small, fast loading graphics for the web.