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Modems use transmission.
A modem transmits data by modulating one or more carrier wave signals to encode digital information, while the receiver demodulates the signal to recreate the original digital information. The goal is to produce a signal that can be transmitted easily and decoded reliably.
A modem transmits data by modulating one or more carrier wave signals to encode digital information, while the receiver demodulates the signal to recreate the original digital information. The goal is to produce a signal that can be transmitted easily and decoded reliably.
See lessDuring preventative maintenance on a dot matrix printer, do NOT lubricate:
For the dot matrix printer you need to clean the internal parts of this unit and you must put a lubricant on the moving parts of this machine, normally on the shaft where the print-head assembly is attached. Adjust the print-head spacing. Check the tension on the print-head-positioning belt.
For the dot matrix printer you need to clean the internal parts of this unit and you must put a lubricant on the moving parts of this machine, normally on the shaft where the print-head assembly is attached. Adjust the print-head spacing. Check the tension on the print-head-positioning belt.
See lessWhich common bus specification provides the fastest data transfer rate?
Fiber optic cables are considered the fastest media of data transfer among the options provided.
Fiber optic cables are considered the fastest media of data transfer among the options provided.
See lessWhat specification covers PC hard cards?
PCI-SIG specifications define standards driving the industry-wide compatibility of peripheral component interconnects.
PCI-SIG specifications define standards driving the industry-wide compatibility of peripheral component interconnects.
See lessWhat is the first step in diagnosing a completely dead computer at the client site that was working the day before.
First, check the power supply. This includes the power from the wall socket, the cable itself, and the power supply in the computer. Try a different socket and a different power cord. If they both work, then consider the power supply.
First, check the power supply. This includes the power from the wall socket, the cable itself, and the power supply in the computer. Try a different socket and a different power cord. If they both work, then consider the power supply.
See lessWhen connecting a ribbon cable to a connector, how do you know which direction to plug it in?
The pins that stick out the end of the connector must be pointing away from the main body of the ribbon cable. There is often a little arrow on the 2 halves of the connector showing you which direction the connector needs to face.
The pins that stick out the end of the connector must be pointing away from the main body of the ribbon cable. There is often a little arrow on the 2 halves of the connector showing you which direction the connector needs to face.
See lessWhen connecting two internal SCSI hard disks to a computer, where do you connect the second hard drive?
The first hard disk is connected to the SCSI controller/adapter, and the second disk is then connected to the first disk. This method is efficient but requires careful planning to ensure each device is correctly configured and terminated.
The first hard disk is connected to the SCSI controller/adapter, and the second disk is then connected to the first disk. This method is efficient but requires careful planning to ensure each device is correctly configured and terminated.
See lessYou see the message "invalid media device" after installing a new hard drive. What do you do next?
First, check if the hard drive is properly connected to the motherboard and power supply. ... Make sure the hard drive is compatible with your system. ... Check the BIOS settings to ensure the hard drive is recognized and set as the primary boot device. ... Update the BIOS if necessary.
First, check if the hard drive is properly connected to the motherboard and power supply. …
See lessMake sure the hard drive is compatible with your system. …
Check the BIOS settings to ensure the hard drive is recognized and set as the primary boot device. …
Update the BIOS if necessary.
What expansion types do most pll/plll motherboards support?
The expansion slots allow users to install compatible adapter cards. Examples of expansion slots include the peripheral component interconnect (PCI) slot, the AGP slot (which enables the insertion of video cards), the PCI Express serial bus slot, and the PCI-extended slot
The expansion slots allow users to install compatible adapter cards. Examples of expansion slots include the peripheral component interconnect (PCI) slot, the AGP slot (which enables the insertion of video cards), the PCI Express serial bus slot, and the PCI-extended slot
See lessWhat is the modem hang up command?
Command Syntax Function H0 ATH0 Hang up (go on-hook) H1 ATH1 Pick up (go off-hook) I0 ATI0 Display the 4-digit product code I1 ATI1 Display the checksum
Command Syntax Function
See lessH0 ATH0 Hang up (go on-hook)
H1 ATH1 Pick up (go off-hook)
I0 ATI0 Display the 4-digit product code
I1 ATI1 Display the checksum