Computer Hardware and Software Questions and Answers

Q: When your hard drive crashes because of any of the causes listed above, or from being dropped, it is known as head-to-disk interference, or HDI.

Correct answer: TrueA head crash is contact between the read-write head and the platter surface, whatever the cause, and it is called head-to-disk interference. The heads normally fly a fraction of a micron above the surface, which is why a knock while running is enough.

Q: What specification covers PC hard cards?

Correct answer: PCMCIAPCMCIA defines the credit-card sized expansion cards used in laptops, later renamed PC Card. SCSI and ISA are buses of a different kind and MFM an old disk encoding.

Q: What beep codes could indicate a system board or power supply failure?

Correct answer: All of the aboveA steady short beep, no beep at all, and one long continuous tone all point to the system board or the power supply - failures early enough that the BIOS cannot report anything more specific.

Q: What does the acronym RTS represent?

Correct answer: Request to sendRTS is one of the RS-232 handshaking lines: the sender raises it to ask permission to transmit, and the receiver answers with CTS, clear to send.

Q: A modem could be attached to which port?

Correct answer: ASYNC portA modem is an asynchronous serial device, so it attaches to the asynchronous serial port - internally, to a serial port on the card itself. The parallel port is for printers.

Q: What can you use to ensure power is not interrupted, resulting in corrupted data?

Correct answer: UPSOnly a UPS keeps the machine running through an interruption, so that data in memory is written out and the system shut down properly. A surge protector guards against excess voltage but supplies nothing when the mains fails.

Q: A 25-pin female connector on the back of your computer will typically be:

Correct answer: A parallel portA 25-pin female connector on the back of a PC is the parallel port. The serial ports are male, with 9 or 25 pins, which is how the two are told apart.

Q: When connecting two internal SCSI hard disks to a computer, where do you connect the second hard drive?

Correct answer: Any open SCSI port on the computerSCSI devices hang off one bus in a chain, so the second drive attaches to any free connector on that bus and is given its own ID. It does not connect to the first drive's ports, and serial and parallel ports are unrelated.

Q: What device prevents power interruptions, resulting in corrupted data?

Correct answer: Battery back-up unitOnly a UPS keeps the machine running through a power interruption, so that work in memory is written out and the system shut down properly. A surge protector guards against excess voltage but supplies nothing when the mains fails.

261.

When your hard drive crashes because of any of the causes listed above, or from being dropped, it is known as head-to-disk interference, or HDI.

A.True
B.False

Answer: A

Correct answer: True

A head crash is contact between the read-write head and the platter surface, whatever the cause, and it is called head-to-disk interference. The heads normally fly a fraction of a micron above the surface, which is why a knock while running is enough.

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262.

What specification covers PC hard cards?

A.SCSI
B.ISA
C.PCMCIA
D.MFM

Answer: C

Correct answer: PCMCIA

PCMCIA defines the credit-card sized expansion cards used in laptops, later renamed PC Card. SCSI and ISA are buses of a different kind and MFM an old disk encoding.

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263.

What beep codes could indicate a system board or power supply failure?

A.steady short beep
B.no beep
C.one long continuous beep tone
D.All of the above

Answer: D

Correct answer: All of the above

A steady short beep, no beep at all, and one long continuous tone all point to the system board or the power supply - failures early enough that the BIOS cannot report anything more specific.

Discuss in Forum

264.

What does the acronym RTS represent?

A.Required to save
B.Ready to start
C.Request to send
D.Right to separate

Answer: C

Correct answer: Request to send

RTS is one of the RS-232 handshaking lines: the sender raises it to ask permission to transmit, and the receiver answers with CTS, clear to send.

Discuss in Forum

265.

A modem could be attached to which port?

A.Parallel port
B.ASYNC port
C.Keyboard connector
D.Video port

Answer: A

Correct answer: ASYNC port

A modem is an asynchronous serial device, so it attaches to the asynchronous serial port - internally, to a serial port on the card itself. The parallel port is for printers.

Discuss in Forum

266.

What can you use to ensure power is not interrupted, resulting in corrupted data?

A.UPS
B.Propergrounding
C.Surge protector
D.Sag protector

Answer: A

Correct answer: UPS

Only a UPS keeps the machine running through an interruption, so that data in memory is written out and the system shut down properly. A surge protector guards against excess voltage but supplies nothing when the mains fails.

Discuss in Forum

267.

A 25-pin female connector on the back of your computer will typically be:

A.Serial port 1
B.A parallel port
C.Docking
D.COM2 port

Answer: B

Correct answer: A parallel port

A 25-pin female connector on the back of a PC is the parallel port. The serial ports are male, with 9 or 25 pins, which is how the two are told apart.

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268.

When connecting two internal SCSI hard disks to a computer, where do you connect the second hard drive?

A.Any open SCSI port on the computer
B.A Serial port on the first host adapter
C.An open parallel port on the computer
D.An open SCSI port on the first hard drive

Answer: A

Correct answer: Any open SCSI port on the computer

SCSI devices hang off one bus in a chain, so the second drive attaches to any free connector on that bus and is given its own ID. It does not connect to the first drive's ports, and serial and parallel ports are unrelated.

Discuss in Forum

269.

ESD damage can be caused by:

A.Placing an IC in a non-conductive plastic bag
B.Placing an IC on a grounded mat
C.Repeated sags in current supplied from outlets
D.Touching metal on the chasis

Answer: A

Correct answer: Placing an IC in a non-conductive plastic bag

An ordinary plastic bag is an insulator and generates charge as the component moves inside it - which is why antistatic bags are made conductive. A grounded mat and a touched chassis both drain charge away.

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270.

What device prevents power interruptions, resulting in corrupted data?

A.Battery back-up unit
B.Surge protector
C.Multiple SIMMs strips
D.Data guard system

Answer: A

Correct answer: Battery back-up unit

Only a UPS keeps the machine running through a power interruption, so that work in memory is written out and the system shut down properly. A surge protector guards against excess voltage but supplies nothing when the mains fails.

Discuss in Forum

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