Thursday, 21 March 2013
Unit 14 M2
If you take a photo from your mobile and send it threw a mms it will be quick,but the picture quality wont be as good and it would cost. If you do it with your digital camera and send it threw your USB to your laptop and put in a E-mail it would take longer but it cost nothing and the picture will be the best quality.
Unit 14 P4
He could send a picture using MMS but the picture would shrink and wouldn't be better quality, or he could take it with a digital camera and use a USB cord and send it threw a email on the laptop.
Thursday, 14 March 2013
UNIT 14 M1
How do protocols keep data safe?
Protocols keep data safe by using passwords, like WI-FI you need a password to put in before you can use the internet access.For example you should change your password regularly so ifn a case that you do get hacked or someone discovers your password, you will still be safe and they can not do as much damage as they would have done if they knew it permanently. Be careful when you access your email or whatever you need to keep safe make sure you log out because some websites will leave you logged in for the future but someone else could access it.
Protocols keep data safe by using passwords, like WI-FI you need a password to put in before you can use the internet access.For example you should change your password regularly so ifn a case that you do get hacked or someone discovers your password, you will still be safe and they can not do as much damage as they would have done if they knew it permanently. Be careful when you access your email or whatever you need to keep safe make sure you log out because some websites will leave you logged in for the future but someone else could access it.
Thursday, 7 March 2013
P3 updated unit 14
WI-Fi - Stands for wireless broadband connection, the data transfer rate is up to 20 megabits per second, connects several computers at once, medium range network. You can send pictures, texts, videos, and it depends on what the signal strength is like.
3G - You can access the interent from phone broadband, the data transfer rate is 14.4 megabits per second. It can be used as all the same things for WI-FI depending on your phone broadband speed.
Bluetooth - Exchanging data over short distances, sends pictures, uses radio frequency to transmit data, very secure because you cannot hack it.
Sms and mms - MMS is multimedia message service and SMS is short message service, text messages that can be sent to mobile phoner, long range data transfer, mms is a extension of sms but with pictures and videos.
Infrared - IRDA protocol, line of sight and low bit error rate, very efficient, data transfer rate 115 kb/s.
Gprs - Send and receive multimedia content, uses WAP protocols, Data transfer rate 80 kilobites per second.
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