Comtia A+ Certification Exams
Practice Before Taking Ur A+ Exams (Quiz Not Fully Completed)
- 1.
You replace a customer's HDD with a Single Ended SCSI system using approximately eight meters of cables in the SCSI system. After this installation the peripherals have stopped functioning. What do you suspect?
- A.
Single Ended SCSI systems use an unbalanced electrical signal
- B.
Single Ended SCSI systems don't work if the total cable length exceeds 6 meters
- C.
An improper cable insertion is the problem
- D.
The cable length is less than the minimum allowed cable length
Correct Answer
B. Single Ended SCSI systems don't work if the total cable length exceeds 6 metersExplanation
The most probable reasons is that the total cable length is eight meters, which exceeds the allowed length. Single-ended SCSI systems have a cable distance limitation of 6m.Rate this question:
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- 2.
You insert a floppy into your FDD and instruct it to the fetch directory. After this you insert the second floppy and execute the same task, but still see the first dir structure instead of the new one. What is the possible cause for the problem?
- A.
Floppy drive ribbon cable
- B.
System;apos;s floppy cable device driver
- C.
FDD memory needs to be refreshed. Press CTRL+C to refresh the buffer
- D.
System;apos;s power supply
Correct Answer
C. FDD memory needs to be refreshed. Press CTRL+C to refresh the bufferExplanation
If a task is repeated multiple times, the result of the task is stored in the buffer and will be fetched when the task is executed again. You can get rid of the old content by pressing key combination of CTRL + C and then browse through the directory again.Rate this question:
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- 3.
SA server has just been connected to a new UPS. You pull the power plug to test the UPS, both the UPS and the server abruptly shut down. What is the most likely cause for this problem?
- A.
The UPS battery was not charged
- B.
The server BIOS was not updated
- C.
The serial cable to the server was disconnected
- D.
The serial cable to the server was disconnected
Correct Answer
A. The UPS battery was not chargedExplanation
Before using a UPS for the first time, the UPS battery must be initially charged.Rate this question:
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- 4.
Which cable type supports high-speed (66 Mbps or 100 Mbps) ATAs?
- A.
40-conductor cable
- B.
60-conductor cable
- C.
80-conductor cable
- D.
20-conductor cable
Correct Answer
C. 80-conductor cableExplanation
An 80-conductor cable is required for high speed ATAs. A 40-conductor cable is used for slower data transfer (33 Mbps or less). Note that we are referring to the cable. The connector has still 40-pin female connectors for both speeds.Rate this question:
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- 5.
Which of the following must be considered when replacing a hard drive? (Choose two.)
- A.
Voltage
- B.
DMA channel
- C.
Cable orientation
- D.
Controller address
- E.
Drive select jumper
Correct Answer(s)
C. Cable orientation
E. Drive select jumperExplanation
When a drive is replaced the cable orientation and the drive select jumper must be used in an appropriate way. Voltage, DMA channel, and Controller Address are non-configurable settings on a hard drive.Rate this question:
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- 6.
You install a new FDD and restart your system. The light on the FDD is constantly on and so is the spindle motor of the drive. Which of the following is a plausible cause?
- A.
The CMOS is set incorrectly
- B.
The floppy drive is not compatible
- C.
There is no power to the floppy
- D.
The cable is reversely connected
Correct Answer
D. The cable is reversely connectedExplanation
Usually the FDD light is constantly ON, only if the control cable has been reversely connected.Rate this question:
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- 7.
A customer has complained that during a certain time of day, a user's client PC cannot connect to or log in to the server. No one else seems to be experiencing difficulty. Whatis the first step in troubleshooting the problem?
- A.
Examine the back-up logs
- B.
Examine the user's PC
- C.
Run an anti-virus scan on the PC
- D.
Examine network server for network problems
Correct Answer
B. Examine the user's PCExplanation
Since no one else is experiencing the problem, it is most likely a problem with the client PC rather than the server or any other network problem.Rate this question:
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- 8.
You install an Ethernet card that is not plug and play and the system is unable to communicate with the card due to resource clash. Which of the following would you reset using jumpers on the card to ensure the card is functional? (Choose two)
- A.
Memory Address
- B.
Communication protocol
- C.
IRC
- D.
Mac Address
Correct Answer(s)
A. Memory Address
C. IRCExplanation
Jumpers can configure the IRQ and the Memory address of a NIC. The MAC address is a pre-configured factory setting that cannot be modified. Rest of the configuration will have to be taken care during NIC driver installation, through the OS itself.Rate this question:
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- 9.
The 34-pin connection on the motherboard is used to interface
- A.
An IDE drive
- B.
An EIDE drive
- C.
A SCSI drive
- D.
a Floppy drive
Correct Answer
D. a Floppy drive -
- 10.
Which feature of SCSI-2 enables a device to accept multiple instructions?
- A.
Dual Channel
- B.
Line queen
- C.
Command queuing
- D.
Multi LUN support
Correct Answer
C. Command queuingExplanation
SCSI-2 supports a feature called command-tag queuing, which enables suitably-equipped operating systems to issue multiple disk commands to the SCSI adapter without having to serialize the operations.Rate this question:
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