PUSH THE BUTTON

Bandwidth is the number of data that can be transmitted in a fixed time period. There are different amounts of data that can be sent at one time. When the data is sent from a network to a host (computer) it is broken up into small bits called packets. The packets are then sent out through the firewall to the internet and to the user by following the Please Do Not  Throw Soggy Pizza Away meaning the 7 stages in the packet sending programe.

Please-physical

Do- data-link

Not-network

Throw-transport

Soggy-session

Pizza- presentation

Away-application

Bandwidth is measured in bits per second (bps) and is described using the followin units

• Bps- bits per second
• Kbps-kilobits per second
• Mbps-megabits per second

One byte is equal to eight bits.one MBps is  approximately 8 Mbps.

TYPES OF ATTACKS ON  PC SECURITY

• PHYSICAL- THEFT, DAMAGE  ETC
• DATA- REMOVAL, CORRUPTION ETC
• INTERNAL THREAT- IMPLOYEES CAN SEND MALICOUS CONTENT OR ACCIDENTAL THREAT

• EXTERNAL THREAT-OUTSIDERS CAN ATTACK THE CORPERATION USING THE INTERNET

VIRUS- A MALICIOUS SOFTWARE CODE THAT IS CREATED BY AN ATTACKER.

WORM-A SELF REPLICATING PROGRAM THAT USES A INFECTED COMPUTERS NETWORK TO DUPLICATE ITS CODE

TROJAN HORSE-a tupe of worm tha trys to trick by making it self look good

attackers can use these tools to install programs onto a computer

• activeX-controls activity on webpages
• Java-allows applets to run inside a browser
• JavaScript-interacts with HTML source to allow interactivity on web sites

P-please-physical

D-do-DATA

N-not-Network

T-throw-transport

S-soggy-session

P-pizza-presontation

A-away-application

LAN- local area network

WAN-wide area net work

WLAN-wireless LAN

IP= internet protocol

Protocol

TCP-transmition control protocol

OSI- open systems interconnect

Topologies

the diference between LAN and WAN is=

LAN= a group of computers wit network capabilities connected together, nomally in the same buidings

WAN=a WAN connects several LAN’s and may be limited to a corperation and organisation

this is a  small description of low  andwhere a scanner is used

i learnt  that injest printers print 2-6ppm and lazer printers print 8-200 ppm! also that the quality of a printeris based in dots per inch (dpi). dot matrix printers such as the daisy weel usaes impact technology, the inkjet printers use electrostatic spray and a lazer printer uses eletrophotographic technology.the colours of printers ate cyan (red), mangeta (blue), yellow and black or CMYK and that dot matrix printers can only use one font and one size and it can not print colour.

HELLO XBOX 360 RULES PS3 SUCKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

4G is a network based around long term evolution (LTE) technology and data speeds that can hit up to 100 megabits an hour. it has been designed to overlay the existing 3G networks.

we need the 4G networks for faster internet connections, downloads and text messages.

it is expected to release early 2010

i think it will be much like the 3g but faster