Wednesday, 3 October 2012

VIRUS PROTECTION

THE THREE THINGS A GOOD VIRUS PROTECTION PROGRAM SHOULD DO:
•    SCAN for viruses
•    CLEAN up the virus
•    PROTECT YOU from viruses


SCAN for viruses:

A good program should be able to check your floppy and hard disks for viruses, as well as the RAM of your computer, and detect the presence of a virus in the 4 locations mentioned above.

CLEAN up the virus:
A good program must be able to get rid of the virus it finds in any of the 4 places mentioned above; otherwise, it's useless.


PROTECT YOU from viruses:








 A good program must have the ability to load a piece of the program into memory at boot-up time, to protect you from getting a virus in the first place. This type of program is called a "Terminate-and-Stay-Resident" (TSR) program. Good programs include McAfee's SCAN, and F-Prot. Both of these are shareware programs, and are available from the instructor upon request.



HOW TO IDENTIFY A MOTHERBOARD ?

When examining a motherboard, look for the following clues to properly identify the board:


MOTHERBOARD

•    Look for the CPU chip (i.e., 8088, 80286, 80386, etc.). This is the biggest single clue.

•    Look at the bus connectors:
                                             if there are only 8-bit connectors, it is an XT-class (8088 based) motherboard. If there are 8-bit and 16-bit bus connectors, it is an AT-class motherboard (at least an 80286-based motherboard). If there are lightbrown bus connectors that look sort of like 16-bit connectors, it's probably an EISA bus motherboard (with an 80386DX or higher CPU). If there is a small brown connector at the end of a 16-bit bus connector, that would be a VESA Local-bus (32-bit) connector. If there is a small white bus connector on the board, that would be a PCI (32/64-bit) local bus connector. These are found on 80486 and Pentium-class motherboards.


•    '386 computers use that provides room for more memory on the motherboard. Many manufacturers use proprietary devices on their motherboards that won't work on motherboards built by other companies