When troubleshooting a computer hardware problem, which tool might with each of the following problems?
(a) you suspect the network port on a computer is not functioning.
(b) the system fails at the beginning of the boot and nothing appears on the screen.
(c) a hard drive is not working and you suspect the molex power connector from the power supply might be the source of the problem.

(A) Loopback plugs

(B) POST diagnostic card

(C) power supply tester

Explanation:

Loopback plug is used to test a network port on the computer and ensure that it is working. To know if the port is working both lights at the end of the port must be ON.

POST diagnostic card : POST means power on self test, is used to report and discover computer errors that occurs while booting the system. The card monitors the boot process and reports errors as coded numbers, you will then search online or through the documentation to know the type of error associated with the system.

Power supply tester : this measures the output of the molex power connector to ensure that it is supplying the required voltage necessary to operate the hard drive.

the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

hope this is what you're talking about

answer:

on fri feb the green land, the only one who can