Section 6

Hacking: The unauthorized access of data. people do this to make money from the data. Having a firewall will protect you from hackers as long as it has approiate security(ie Password)

Virus:Its a program/software that corrupts a system and/or the data. It does no good for anybody at all. Anti virus scans the computer for known files with viruses.However it still allows viruses onto your computer.It gets rid of them once you've  scanned the computer using todays list.

Employment: Computer/roots= unemployment. They're more efficent, faster and capable of doing things compared to Humans. The lack of workers with approiate IT skills menas there must be

Section 4

What  is a router: router goes to isp first.
dividing two bits of information up and passes information thats goin around one network to another keeping traffic separate.
doesnt have to go on internet
every router gets number
if sending something to something to some in own house doesnt need the internet
router control traffic
two setting internal eg inhouse, external if message is not for that person in that house.
tr ansfering thhings between your house withut using internet.


WIFI:
Tramsferring data between devices without the need for physical connection or wiring


 Bluetooth: 
is used by mobile devices for transferring smaller files
it is slower than wifi
bluetooth creates its own network and is an agreement between two devices wear is wifi is with multilple devices


How to set up a network:
to set a network with the internet you need a isp they will provide you with a router browser
IRB


ISP: Internet Service Provider eg: telecom, orcon
                                                                                                                                                                     


 advantages-communication, transfer of files, resources, share storage, common (all similar)
    disadvantages-virus', malware, hackers, loss of resource, loss of connection

 id's and passwords are used to divide personal files by accounts, authorize different access
    home directory=personal area of network


                                                                                                                                                                   


Faxes: hard copy to hard copy and legal.
Not secure as it could be unknown who picks up the fax
is also a delay- unknown that it could be there and could sit there for days


Email: Blind copy, 


-CC not for you but could be of intrest


Tele/video calling- Multiple people so that you can confrence and discuss something meaning you don't have to get on a plane just for a meeting.
tele - phone
video-video


local area network (LAN) - a network on one site 
(WAN) - two sites are permately linked


Differnce = one vs two sites
also to create a lan you need switches, hubs, bridges
to create a wireless lan need an access point thats linked on to the lan.
to create a WAN you a need a rotuer on eitehr end you also need an external internet line.


Intranet- web technoolgy being used inside your business, being more secure and people are more familar interface


Internet-providing services sharing information and advertising


HUB- is a confused nox , 
bridge - is a link between two parts of a LAN
, used to orginize the LAN to maximise the sending signal
Switches- Manages the traffic going from a specific port to another

Student privacy

-We want more Disclosure about our personal life

-Desprate for attention

-We dont care who reads our posts, we just Disclosure

-There is no force on earth from keeping teens from looking at something in the internet

How do we create a market for Facebook

when internet is blocked it limits the kids form for themselves.

Makes kids use proxies and makes it harder for the kids to use the internet propely

Trains kids to believe that survilence on the internet is a bad thing and privacy is a bad thing

Slows them thinking bout there privacy

Teach kids to incript and jailbreak, and teach them to portect and use privacy.

Teach how to bust sensor wall

Teach how to spoof every form

We need to accept that someone needs to know what you are doing

Feedback

Must be as close to the attempt as possible. You want to do better immediately as oppose to a week later.
Games are popular because the result of your action is shown to you as you play.

back storage at kc

• Fixed hard discs- Used in every computer in the school
• Portable hard discs- Used to store large files
• Magnetic tape- Uses serial access for reading and writing.  Used for backups of file servers for computer networks. Optical backing storage media such as CDs and DVD and is quite cheap for backing up files at King's.
• Optical backing storage media such as CDs and DVD-CDs tend to be used for large files (but smaller than 1Gb) which are too big for a floppy disc to hold such as music and general animation.  DVDs are used to hold very large files (several Gb) such as films at school.
• CD ROM/DVD ROM-Applications which require the prevention of deletion of data, accidental or otherwise for students.
• CD R/DVD- Applications which require a single burning of data, e.g. CDs Z recording of music downloads from the internet, recording of music from MP3 format, recording of data for archiving or backup purposes at King's.
• CD RW/DVD RW-Applications which require the updating of information and ability to record over old data at King's.
• DVD RAM- Same properties as DVD RW but quicker access and data can be overwritten more easily. 
• Blu-ray-Capacities of 25Gb, 50Gb and 100 Gb.  Used for storing films (movies). 25Gb equates to 2 hrs HDTV, 13hrs standard definition TV
• Solid state backing storage-Smallest form of memory, used as removable storage at school.  More robust than other forms of storage. 
• Memory sticks/Pen drive-Used at Kings to transport small files conveniently.
• Flash memory cards-Used in digital cameras, palmtops, mobile phones, MP3 players at Kings

Cheers Sheets for this information

BAcking storage ( class work)

DVD would be used at school over Blu-ray because blu- ray players are more expensive. Although there quailty of 25-100 Gb would be good it is an unessicarry want that we simply do not need. A simple DVD player would do the job just fine and is easier to access as they are built into Students and teachers Laptops.
Blu-ray players may be needed in some subjetcs like Media Studies where all they do is watch and anaylse movies, so this could be useful for them.

Steps for Access

Step one: Open Access
Step two: Start blank database and name it J08Database
Step three: Open text file csv
Step four: Press next
Step five: keep as delimited
Step six: Tick first row contains fields name, and make sure comma is ticked and press next
Step seven: Press next
Step eight: tick primary key and press next
Step nine: Press finish and close

Step ten: once pressing finish a box will appear, never ever tick it

IGCSE Theory Section 3

Section 3: Storage devices and media
Candidates should be able to:
(a)  describe common backing storage media (including magnetic tapes, hard discs, all forms of CD and
DVD, memory sticks, flash memory) and their associated devices
(b)  identify typical uses of the storage media, including types of access (e.g. serial/sequential, direct/
random) and access speeds

• Fixed hard discs Used to store operating systems, software and working data.  Any application which requires very fast access to data for both reading and writing to.  Not for applications which need portability.  Used for online and real time processes requiring direct access.  Used in file servers for computer networks
• Portable hard discs Used to store very large files which need transporting from one computer to another and price is not an issue.  More expensive than other forms of removable media
• Magnetic tapes Any application which requires extremely large storage capacity and speed of access is not an issue.  Uses serial access for reading and writing.  Used for backups of file servers for computer networks.  Used in a variety of batch processing applications such as reading of bank cheques, payroll processing and general stock control
• Optical backing storage media such as CDs and DVDs CDs tend to be used for large files (but smaller than 1Gb) which are too big for a floppy disc to hold such as music and general animation.  DVDs are used to hold very large files (several Gb) such as films.  Both CDs and DVDs are portable i.e. they can be transported from one computer to another.  Both can be used to store computer data
• CD ROM/DVD ROM Applications which require the prevention of deletion of data, accidental or otherwise.  CDs used by software companies for distributing software programs and data; by music companies for distributing music albums and by book publishers for distributing encyclopaedias, reference books etc.  DVDs used by film distributors
• CD R/DVD R Applications which require a single eburningf of data, e.g. CDs Z recording of music downloads from the internet, recording of music from MP3 format, recording of data for archiving or backup purposes.  
• DVDs Z recording of films and television programs
• CD RW/DVD RW Applications which require the updating of information and ability to record over old data.  Not suitable for music recording but is very useful for keeping generations of files.  DVDs have between five and ten times the capacity of CDs
• DVD RAM Same properties as DVD RW but quicker access and data can be overwritten more easily.  Similar to floppies in nature but has 3000Z6000 times more storage and uses optical technology
• Blu-ray Capacities of 25Gb, 50Gb and 100 Gb.  Used for storing films (movies). 25Gb equates to 2 hrs HDTV, 13hrs standard definition TV.  It is possible to playback video on a disc while simultaneously recording HD video.  (Will be) used for storage of PC data
• Solid state backing storage Smallest form of memory, used as removable storage.  More robust than other forms of storage.  More expensive than other forms, but can be easily written to and updated
• Memory sticks/Pen drives Can store up to many Gb.  Used to transport files and backup data from computer to computer
• Flash memory cards Used in digital cameras, palmtops, mobile phones, MP3 players