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ISDN uses which of the following technologies?
| ( | A | ) | | Digital and analog |
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| ( | B | ) | | Only analog |
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| ( | C | ) | | Only digital |
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| ( | D | ) | | Laser diode |
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| ( | E | ) | | None of the above |
The Correct Answer is: C
The most chosen answer was [ C ] :: [ Only digital ]
Explanation:
ISDN uses only digital signals to transfer data packets.
A typical 80min CD-ROM can hold approximately how much data?
| ( | A | ) | | 700MB |
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| ( | B | ) | | 800MB |
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| ( | C | ) | | 600MB |
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| ( | D | ) | | 500MB |
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| ( | E | ) | | 128MB |
The Correct Answer is: A
Explanation:
An 80Min cd-rom can hold approximately 700MB of data.
What 3 things must be configured in the Operating System in order to use an internal modem?
| ( | A | ) | | COM, I/O, IRQ |
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| ( | B | ) | | DMA Channel, IRQ, I/O |
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| ( | C | ) | | IRQ, I/O |
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| ( | D | ) | | DMA Channel, I/O |
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| ( | E | ) | | COM, DMA Channel, IRQ |
The Correct Answer is: A
Explanation:
The 3 things that must be configured for an internal modem to work are the COM port, I/O address, and IRQ (Interupt Request).
You are reported that the monitor at a client's place is having a problem. You are about to remove the cover of the monitor. What do you do just before opening the monitor cover? Choose all that apply.
(this question provided by simulationexams.com)
| ( | A | ) | | Wear wrist strap to prevent ESD damage to the monitor |
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| ( | B | ) | | Make sure that the power is switched off and the power cord is plugged out |
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| ( | C | ) | | Make sure that the ESD is grounded properly |
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| ( | D | ) | | Connect the Monitor as well as the wrist strap to the ground. |
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| ( | E | ) | | All of the above |
The Correct Answer is: B
Explanation:
Never wear a wrist strap when working on monitors.
Monitors contain very high voltages, sometimes fatal to human, even when the
power is turned off. If you are wearing wrist strap, the human body work as a
conduit to discharge the electric charge.
Which of the following choices is the type of data transmission used by a modem?
| ( | A | ) | | Multisynchronous |
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| ( | B | ) | | Asynchronous |
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| ( | C | ) | | Time-delay transmission |
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| ( | D | ) | | Synchronous |
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| ( | E | ) | | Digital |
The Correct Answer is: D
Explanation:
Asynchronous transmission is used by modems to send data intermittently rather than at a steady stream. This allows both parties to transmit data at the same time.
This quiz was generated by user Romeo in nov2002.
a+ certification || gmat test prep || pool game || funny joke
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