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This is a system where each computer listens to the cable before sending anything through the network. If the network is clear, the computer will transmit. If some other node is already transmitting on the cable, the computer will wait and try again when the line is clear.
Sometimes, two computers attempt to transmit at the same instant.
When this happens a collision occurs. Each computer then backs off and waits a random amount of time before attempting to retransmit. With this access method, it is normal to have collisions.
However, the delay caused by collisions and retransmitting is very small and does not normally effect the speed of transmission on the network. The Ethernet protocol allows for linear bus, star, or tree topologies.
Data can be transmitted over twisted pair, coaxial, or fiber optic cable at a speed of 10 Mbps up to Mbps. Fast Ethernet To allow for an increased speed of transmission, the Ethernet protocol has developed a new standard that supports Mbps. This is commonly called Fast Ethernet. Fast Ethernet requires the use of different, more expensive network hubs and network interface cards.
The access method used involves token-passing. In Token Ring, the computers are connected so that the signal travels around the network from one computer to another in a logical ring. Still you to make a desktop application.
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The biggest danger with flashing a BIOS comes in the event of power loss during the procedure. If you are updating a laptop, first make sure the battery is fully charged, and then plug into the wall power so you are not running off the battery. In the event of power failure, your battery will keep things running.
If you are updating a desktop computer, it's best if you are plugged into an uninterruptible power supply UPS. Like the laptop's battery, the UPS will keep everything running, while others are running around in the dark.
Run the downloaded installer or. If the software prompts you for a floppy, use a formatted 1. Insert it into the drive and restart the system to boot from it. Some floppy images contain an "autoexec. Others will just have the update software, the updated BIOS image, and possibly a 'readme' text file containing directions.
Compare the two versions. If the system's existing BIOS version is older, perform the update.
After the update is completed, many update programs will automatically restart the computer. Some updaters will request your permission to do so while others will warn about this before starting the update.
A few will prompt you to power cycle the system yourself. To perform the power cycling procedure manually: Completely power down the PC by either pressing the power button or initiating the power off sequence from the operating system.
Flip the master power switch on the back of your PC to the off position, if applicable.
Wait a minute.