Chapter 9 Security
The Importance of Security:
Private information, company secrets, finacial data, computer equipment and items of national security are placed at risk if proper security procedures are not followed.
A technician's primary responsibilities include data and network security.
Security Threats:
Types of attacks to computer security:
Physical - Theft, damage or destruction to computer equipment.
Data - Removal, corrumption, denial of access, unauthorized access or theft ... Read More
Chapter 9 Security
Posted On 14 Jun 2010 By ben1995. Under: Uncategorized.
Chapter 9 Security
The Importance of Security:
Private information, company secrets, finacial data, computer equipment and items of national security are placed at risk if proper security procedures are not followed.
A technician's primary responsibilities include data and network security.
Security Threats:
Types of attacks to computer security:
Physical - Theft, damage or destruction to computer equipment.
Data - Removal, corrumption, denial of access, unauthorized access or theft ... Read More
NIC, Modem, VoIP, Broadband, Troubleshooting
Posted On 13 May 2010 By ben1995. Under: Uncategorized.
Chapter 8 Review
A network interface card is required to connect to the Internet. The NIC may already be installed or you may have to purchase one on your own. You may need to update the driver. You can use the driver disc that comes with the motherboard or adapter card. or you can supply a driver that you download from ... Read More
Chapter 8 List
Posted On 02 May 2010 By ben1995. Under: Uncategorized.
Chapter 8 List
Ben Rees-Boughton
Mac Address:
Standardized data link layer address that is required for every port or device that connects to a LAN. Other devices in the network use these addresses to locate specific ports in the network and to create and update routing tables and data structures. They are 6 bytes long and are controlled by IEEE.
IP Address:
It is a unique ... Read More
Networks
Posted On 28 Apr 2010 By ben1995. Under: Uncategorized.
Networks
Ben Rees-Boughton
Types of Networks:
Local Area Network (LAN)
A group of interconnected computers that is under the same administrative control.
Can be as small as a single local network installed in a home or small office.
Can consist of interconnected local networks consisting of many hundreds of hosts, installed in multiple buildings and locations.
Wide Area Network (WAN)
A WAN connects LANs in geographically separated ... Read More
Introduction To Scanners
Posted On 25 Mar 2010 By ben1995. Under: Uncategorized.
Introduction To Scanners
Scanners convert printed data or images into an electronic data format that a computer that a computer can store or process as required. A scanned image can be saved, modified and even e-mailed as you would witha ny other file.
Features,quality and speed of scanners vary.
Scanners typically cretae an RGB image that can be converted into image formats such ... Read More
Adding a Printer
Posted On 17 Mar 2010 By ben1995. Under: Uncategorized.
Adding a Printer
Go on the internet and type in Lexmark. Then choose a printer (Lexmark x3350).
Click on downloads and choose Lexmark 3300 Software support for Mac OS X 10.5.
Then click download now.
Once it has downloaded click on Lexmark 3300 Web Installer 10.6 dmg.
Wait for it to download.
Then follow these steps.
Then attach USB cables to the printer from the computer.
Then this will ... Read More
Introduction to Printers
Posted On 08 Mar 2010 By ben1995. Under: Uncategorized.
Introduction To Printers
Ben Rees-Boughton
Today I have learnt about printers. There are many things that I didn't know about printers.
Printers: Printers produce paper copies of electronic files.
There are many different kinds of printers available today:
Laser Printers-Using electrophotographic technology
Inkjet Printers-Using electrostatic spray technology
Dot Matrix Printers-Using impact technology
Printer speed is measured in Pages Per Minute (ppm)
Price of a printer reflects its capacity ... Read More
Summary of Chapter 6
Posted On 15 Feb 2010 By ben1995. Under: Uncategorized.
Summary of Chapter 6
Ben Rees-Boughton
What Is Chapter 6
Chapter 6 is all about portable machines like laptops and mobile phones. There are different kinds of portable machines. There are:
Laptops: A laptop is a small flat computer that can do everything a desktop can do. It doesn't need any wires. The only time it needs a wire is when it has run out ... Read More
Ben R-B-Mobile Phone Technologies
Posted On 04 Feb 2010 By ben1995. Under: Uncategorized.
Mobile Phone Technologies
The first generation of mobile phones were in the 1980s. They were 1G. They used analog standards including:
Advanced Mobile Phone System (AMPS)
Nordic Mobile Telephone
In an analog system, the voice information is sent by varying the radio signals used by the phone in the same pattern as the speakers voices. This means that interference and noise, which also vary ... Read More
Ben R-Bs Comparing Desktop and Computer Components
Posted On 02 Feb 2010 By ben1995. Under: Uncategorized.
Comparing Desktop and Laptop Components
Most of the functions that a desktop can perform can also be performed on a laptop. These kinds of computers are built very differently and the parts are not interchargeable. A few components can be shared between desktops and laptops.
Laptop components are much more specialized tahn desktop componenets. Laptop manufacturers focus on refining laptop components to ... Read More
