Comtia A+ Certification Exams

1. 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?

The UPS battery was not charged

The server BIOS was not updated

The serial cable to the server was disconnected

Before using a UPS for the first time, the UPS battery must be initially charged.

Explanation

Before using a UPS for the first time, the UPS battery must be initially charged.

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?

Floppy drive ribbon cable

System;apos;s floppy cable device driver

FDD memory needs to be refreshed. Press CTRL+C to refresh the buffer

System;apos;s power supply

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.

Explanation

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.

3. 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?

Single Ended SCSI systems use an unbalanced electrical signal

Single Ended SCSI systems don't work if the total cable length exceeds 6 meters

An improper cable insertion is the problem

The cable length is less than the minimum allowed cable length

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.

Explanation

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.

4. 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?

The CMOS is set incorrectly

The floppy drive is not compatible

There is no power to the floppy

The cable is reversely connected

Usually the FDD light is constantly ON, only if the control cable has been reversely connected.

Explanation

Usually the FDD light is constantly ON, only if the control cable has been reversely connected.

5. The 34-pin connection on the motherboard is used to interface

An IDE drive

An EIDE drive

A SCSI drive

A Floppy drive

6. 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. What
is the first step in troubleshooting the problem?

Examine the back-up logs

Examine the user's PC

Run an anti-virus scan on the PC

Examine network server for network problems

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.

Explanation

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.

7. Which cable type supports high-speed (66 Mbps or 100 Mbps) ATAs?

40-conductor cable

60-conductor cable

80-conductor cable

20-conductor cable

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.

Explanation

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.

8. Which of the following must be considered when replacing a hard drive? (Choose two.)

Voltage

DMA channel

Cable orientation

Controller address

Drive select jumper

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.

Explanation

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.

Submit

9. 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)

Memory Address

Communication protocol

IRC

Mac Address

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.

Explanation

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.

Submit

10. Which feature of SCSI-2 enables a device to accept multiple instructions?

Dual Channel

Line queen

Command queuing

Multi LUN support

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.

Explanation

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.