CompTIA A+ Practice Exam Bm .
Comptia A+ exam
- 1.
………………………….occurs when circuit is created that allows electrons to rush from a statically charged body to another an unequal charge.
- A.
Electrical Hazard
- B.
ESD
- C.
Physical hazard
- D.
Chemical hazard
Correct Answer
B. ESDExplanation
ESD stands for Electrostatic Discharge. It occurs when a circuit is created that allows electrons to rush from a statically charged body to another body with an unequal charge. This can cause damage to electronic components and devices, as the sudden flow of electrons can disrupt their normal functioning. ESD is a common problem in industries where sensitive electronic equipment is handled, and proper precautions must be taken to prevent it.Rate this question:
-
- 2.
Which cooling system is used to cool the, power supply, adapter cards, and CPU?
- A.
Liquid cooling system
- B.
Fan
- C.
Thermal compound
- D.
Heat sink
Correct Answer
B. FanExplanation
A fan is used to cool the power supply, adapter cards, and CPU. Fans work by circulating air and dissipating heat. They are commonly used in computer systems to prevent overheating and maintain optimal operating temperatures. Fans are cost-effective and easy to install, making them a popular choice for cooling components. Liquid cooling systems, thermal compound, and heat sinks are also used for cooling purposes, but in this case, the correct answer is a fan.Rate this question:
-
- 3.
The primary advantages of the FAT file system are its extremely low disk overhead, which is less than…………
- A.
5 KB
- B.
1 MB
- C.
5 MB
- D.
1 KB
Correct Answer
B. 1 MBExplanation
The primary advantages of the FAT file system are its extremely low disk overhead, which is less than 1 MB. This means that the file system takes up very little space on the disk, allowing for more storage capacity for user files. Additionally, the low disk overhead makes it easier and faster to access and retrieve files, improving overall system performance.Rate this question:
-
- 4.
A user complains that his hard disk is really running slow. As a PC Technician, what should be your first step to resolve the issues?
- A.
Defragment the drive. Verify and replace the hard drive cable if necessary.
- B.
Format the hard drive
- C.
Replace the main board
- D.
Replace the hard drive
Correct Answer
A. Defragment the drive. Verify and replace the hard drive cable if necessary.Explanation
The correct answer is to defragment the drive and verify and replace the hard drive cable if necessary. This is because a fragmented hard drive can slow down the performance of the computer, so defragmenting it can help improve its speed. Additionally, a faulty or damaged hard drive cable can also cause slow performance, so verifying and replacing it if necessary can help resolve the issue. Formatting the hard drive, replacing the main board, or replacing the hard drive itself may not be necessary or effective in resolving the slow performance issue.Rate this question:
-
- 5.
While you were testing a resistance of a component on your motherboard, you damaged another component. Amongst the following what could be the possible cause?
- A.
The resistance of the component was less than that of the component being tested
- B.
The multimeter transmitted some current, thus damaging the component
- C.
The resistance of the component was more than that of the component being tested
- D.
The component was improperly aligned
Correct Answer
B. The multimeter transmitted some current, thus damaging the componentExplanation
The possible cause for damaging another component while testing the resistance of a component on the motherboard could be that the multimeter transmitted some current, leading to the damage.Rate this question:
-
- 6.
What should be done if CMOS contains a password you don’t know?
- A.
Keep typing different password combinations
- B.
Install the COMS shorting jumper to erase the CMOS data
- C.
Find a machine that does not use password protection
- D.
Enter the CMOS program and reset or erase the password
Correct Answer
B. Install the COMS shorting jumper to erase the CMOS dataExplanation
If the CMOS contains a password that is not known, the best solution would be to install the CMOS shorting jumper to erase the CMOS data. This is because the CMOS shorting jumper is a hardware solution that can reset the CMOS settings, including any passwords that may be set. By doing this, the password will be cleared, allowing access to the CMOS program without needing to know the password.Rate this question:
-
- 7.
Which of the following technique is used to troubleshoot if the adapter card and its slots are working fine, but services are unavailable?
- A.
Replace adapter card that is electronically damaged
- B.
Visually inspect cards and cables and reconnect if necessary
- C.
Resolve hardware resource conficts
- D.
Replace adapter card that is physically damaged
Correct Answer
B. Visually inspect cards and cables and reconnect if necessaryExplanation
Visually inspecting cards and cables and reconnecting if necessary is the appropriate technique to troubleshoot if the adapter card and its slots are working fine, but services are unavailable. This is because a loose or disconnected cable or a faulty card connection can cause services to be unavailable even if the card and slots are functioning properly. By visually inspecting and reconnecting cards and cables, any issues related to loose connections or faulty cables can be identified and resolved, potentially restoring the availability of services.Rate this question:
-
- 8.
How will you grather information about the modems installed in the computer and the network configuration without checking in the control panel utility?
- A.
By using the registry sub tree HKEY_CFLASSES_ROOT
- B.
By using the registry sub tree HKEY_LOCAL_MACHINE
- C.
By using the registry sub tree HKEY_CURRENT_USER
- D.
By using the registry sub tree HKEY_USERS
Correct Answer
B. By using the registry sub tree HKEY_LOCAL_MACHINE -
- 9.
.Which of the following is not a function of fully uninterruptible Power Supply system?
- A.
Switch to output of battery power when a loss in power is detected
- B.
Keeping the batteries online
- C.
Long term data backup
- D.
Monitor the power input line
Correct Answer
C. Long term data backupExplanation
A fully uninterruptible Power Supply system is designed to provide continuous power to critical devices in the event of a power outage or loss. It typically switches to battery power when a loss in power is detected, ensuring uninterrupted power supply. It also keeps the batteries online to ensure they are charged and ready for use. Additionally, it monitors the power input line to detect any issues or fluctuations. However, long term data backup is not a function of a fully uninterruptible Power Supply system. This system is primarily focused on providing immediate power backup and ensuring continuous operation, rather than long-term data storage.Rate this question:
-
- 10.
John need to attache an external CD-Rom drive. Which option needs to be verified when installing an external drive that in not checked normally on installing a internal drive on a notebook?
- A.
Close the screen of the notebook PC
- B.
Verify that the power switch, or power supply, is turned off.
- C.
Verify that proper device drives are installed
- D.
Verify that Hard drive is disconnected
Correct Answer
B. Verify that the power switch, or power supply, is turned off.Explanation
When installing an external CD-Rom drive, it is important to verify that the power switch or power supply is turned off. This is not typically checked when installing an internal drive on a notebook, as the power is usually automatically disconnected when the notebook is turned off or the screen is closed. However, in the case of an external drive, it is crucial to manually turn off the power to avoid any potential electrical issues or damage to the device.Rate this question:
-
- 11.
Which divice does the processor uses to interact with rest of the hardware?
- A.
Memory slot
- B.
BIOS chip
- C.
Expansion slot
- D.
CMOS Battery
Correct Answer
B. BIOS chipExplanation
The processor uses the BIOS chip to interact with the rest of the hardware. The BIOS chip contains the firmware that initializes the hardware components of the computer and provides the necessary instructions for the processor to communicate with them. It acts as a bridge between the processor and the other hardware devices, allowing them to work together efficiently.Rate this question:
-
- 12.
.---------------------------lasera are capable of creating eye damage through chronic, continous exposure; this classs include barcode readers
- A.
Class 3
- B.
Class 2
- C.
Class 4
- D.
Class 1
Correct Answer
B. Class 2Explanation
Class 2 lasers are the correct answer because they are capable of creating eye damage through chronic, continuous exposure. This class includes barcode readers, which emit laser beams that can be harmful to the eyes if exposed to them for long periods of time. Class 3 lasers have a higher potential for eye damage, while Class 4 lasers are the most dangerous and can cause immediate eye injury. Class 1 lasers are considered safe for eye exposure.Rate this question:
-
- 13.
Port COM1 is type of---------------------------------------.
- A.
Parallel Port
- B.
PS/2 Port
- C.
USB port
- D.
Serial Port
Correct Answer
D. Serial PortExplanation
Port COM1 is a type of serial port. Serial ports are used to connect devices such as modems, printers, and mice to a computer. They transmit data one bit at a time, sequentially, over a single communication line. In contrast, parallel ports transmit multiple bits simultaneously over multiple lines. PS/2 ports are used for connecting keyboards and mice, USB ports are used for connecting a variety of devices, and parallel ports are used for connecting printers.Rate this question:
-
- 14.
What is the full form of ATAPI?
- A.
Advanced Technology Attachment Packing Interface
- B.
Advanced Technology Attachment Packet Interface
- C.
Advanced Technology Attachment Packing Interrelate
- D.
Advanced Technology Attachment Packet interrupt
Correct Answer
B. Advanced Technology Attachment Packet InterfaceExplanation
ATAPI stands for Advanced Technology Attachment Packet Interface. This is a protocol that allows devices such as CD-ROM drives, DVD drives, and tape drives to be connected to a computer's motherboard. It is an extension of the ATA (Advanced Technology Attachment) standard, which is used for connecting hard drives and other storage devices. The ATAPI protocol allows for the transfer of data in packets, making it more efficient for devices that use sequential access, such as CD-ROMs.Rate this question:
-
- 15.
John is planning to create a data processing-intensive crossword generator software. He had recently purched a good quality processor with L1 and L2 caches but want to increase its speed to allow his software to be tested well. Which of the following methods can he use to increase the speed of his processor at minimal cost?
- A.
Purchase another processor with L3 cache also.
- B.
Buy a new processor that supports MMX
- C.
Use Throttling
- D.
Use overclocking
Correct Answer
D. Use overclockingExplanation
Overclocking is the process of increasing the clock speed of a processor beyond its default settings. This can be done by adjusting the settings in the computer's BIOS or using specialized software. By overclocking his processor, John can increase its speed without having to purchase a new one or invest in additional hardware. This method allows him to maximize the performance of his existing processor at minimal cost.Rate this question:
-
- 16.
An unknown hardware device is buffering its data in the memory, while the CPU is busy runing some other application. Which technique would that device be use?
- A.
Memory Address
- B.
DMA
- C.
IRQ
- D.
I/O Address
Correct Answer
B. DMAExplanation
When a hardware device is buffering its data in memory while the CPU is busy running another application, it would typically use Direct Memory Access (DMA). DMA allows the hardware device to transfer data directly to and from memory without involving the CPU, freeing up the CPU to perform other tasks. This technique is commonly used to improve overall system performance and efficiency.Rate this question:
-
- 17.
How can you enable your system to recognize a SCSI devices?
- A.
By restalling the operating system
- B.
Sysetm automatically recognizes SCSI devices
- C.
By configuring CMOS
- D.
By setting SCSI card to be BIOS enable
Correct Answer
D. By setting SCSI card to be BIOS enableExplanation
By setting the SCSI card to be BIOS enabled, you are allowing the system's BIOS to recognize and communicate with SCSI devices. This configuration ensures that the system can detect and interact with any SCSI devices connected to it, enabling proper functionality and data transfer between the system and the SCSI devices.Rate this question:
-
- 18.
Which of the following reasons holds true when the mouse works sometimes?
- A.
Mouse setting are incrroct
- B.
Mouse ball or rollers are dirty
- C.
Mouse is plugged in to the keyboard port
- D.
IRQ confict between the mouse and any other divices
Correct Answer
D. IRQ confict between the mouse and any other divicesExplanation
When the mouse works sometimes, it could be due to an IRQ conflict between the mouse and any other devices. IRQ (Interrupt Request) is a signal sent to the CPU to get its attention for a specific task. If there is a conflict between the mouse and another device trying to use the same IRQ, it can cause intermittent functionality of the mouse. This conflict can disrupt the communication between the mouse and the computer, resulting in the mouse working only sporadically.Rate this question:
-
- 19.
You have not used your Ink jet printer for last two days. Which of the following cycle your printer needs to go through in order to come into the ready state?
- A.
Cleaning
- B.
Ready
- C.
Heat up
- D.
Charging
Correct Answer
A. CleaningExplanation
When an inkjet printer is not used for a certain period of time, the ink in the nozzles can dry up and clog the print head. To prevent this, the printer needs to go through a cleaning cycle to remove any dried ink and unclog the nozzles. This process ensures that the printer is ready to print when needed. Therefore, the printer needs to go through the cleaning cycle in order to come into the ready state.Rate this question:
-
- 20.
An unwanted software loaded in ti system for the purpose of presenting commercial advertisement to the user is called___________________.
- A.
Spyware
- B.
Spam
- C.
Worms
- D.
Adware
Correct Answer
D. AdwareExplanation
Adware is an unwanted software that is loaded onto a system with the purpose of presenting commercial advertisements to the user. It often comes bundled with other free software and can display pop-up ads, redirect web browsers, and collect user data for targeted advertising. Unlike spyware, which is designed to gather information without the user's consent, adware is primarily focused on delivering advertisements.Rate this question:
-
- 21.
GlobeSurf Inc. is planning to expand its ISP operations by implementing the new wireless network. The network team had implemented a 802.11 wireless network for the corporates last year. They now want to use a cost-effective and compatible wireless network which can also connect with their 802.11 wireless network. Which wireless standard they should implement?
- A.
802.11d
- B.
802.11b
- C.
802.11b
- D.
802.11f
Correct Answer
B. 802.11bExplanation
The correct answer is 802.11b because it is a cost-effective and compatible wireless network that can connect with their existing 802.11 wireless network.Rate this question:
-
- 22.
Which statrment is TRUE about DNS Services?
- A.
DNS is Microsoft’s NetBIOS name resolution service which as develop to reduce the number of NetBIOS name resolution broadcast on networks that use NetBIOS naming.
- B.
DNS is a terminal emulation protocol that enables a user at one site to simulate a session on a remote host.
- C.
DNS is a network service that provides automatic assignment of IP addresses and other TCP\IP configuration information on network systems that are configured as DHCP client.
- D.
DNS is the primary name resolution service in the internet as well as private IP networks.
Correct Answer
D. DNS is the primary name resolution service in the internet as well as private IP networks.Explanation
DNS (Domain Name System) is indeed the primary name resolution service in the internet as well as private IP networks. It translates domain names (e.g., www.example.com) into IP addresses (e.g., 192.0.2.1) so that computers can communicate with each other. DNS eliminates the need for users to remember and enter IP addresses, making it easier to navigate the internet. It also allows for the creation of subdomains and the mapping of multiple IP addresses to a single domain name.Rate this question:
-
- 23.
A network in which some nodes act as servers to provide special service on behalf of other nodes is called------------------------------------------------------……..
- A.
Client/server network
- B.
Peer to peer network
- C.
Mixed node network
- D.
Centralized network
Correct Answer
A. Client/server networkExplanation
A network in which some nodes act as servers to provide special services on behalf of other nodes is called a client/server network. In this type of network, some nodes (servers) have resources or services that they provide to other nodes (clients) upon request. The clients request and receive these services from the servers, making it a client/server network.Rate this question:
-
- 24.
Which of the following statement is NOT true about My Computer in Windows XP?
- A.
It is available as a shortcut icon on the windows destop
- B.
It is a graphical tool to manage files and folders on a computer
- C.
It is a single-pane view
- D.
It is two-pane view
Correct Answer
D. It is two-pane viewExplanation
The My Computer in Windows XP is a single-pane view, not a two-pane view. This means that when you open My Computer, you will see all the drives and folders in a single window, rather than having a separate pane for each drive or folder.Rate this question:
-
- 25.
Mr. Dylan owned a laptop computer, which he used extensively in his office. Now his son, Wally, is insisting him to buy a desktop for he wants to play his favorite MP3 music on the system. Suggest him analternative such that he can avail the functionality of a desktop system
- A.
Buy a MP3 player.
- B.
Upgrade his laptop
- C.
Connect the laptop with the internet
- D.
Buy a docking station.
Correct Answer
D. Buy a docking station.Explanation
Buying a docking station would be a suitable alternative for Mr. Dylan as it would allow him to connect his laptop to a desktop-like setup. He can connect a monitor, keyboard, and mouse to the docking station, essentially turning his laptop into a desktop system. This way, Wally can play his favorite MP3 music on a larger screen and enjoy the functionality of a desktop system without the need to purchase a separate desktop computer.Rate this question:
-
- 26.
You have signed up for oneline banking at your financial institution. Just after signing up you receive a email requesting that you reconfirm your name, address, taxpayer identification information, and account number. What should you do?
- A.
Assume that your information was lost, and resubmit using different email address.
- B.
Assume that your information was lost, and resubmit it by replying to the eamil.
- C.
Assume it is fraud email and report to the company
- D.
Cancel the online account, and don’t create a new one.
Correct Answer
C. Assume it is fraud email and report to the companyExplanation
The correct answer is to assume that the email is a fraud and report it to the company. This is because legitimate financial institutions would not request sensitive information like name, address, taxpayer identification information, and account number via email. It is important to be cautious and not provide personal information to potential scammers, as they can use it for fraudulent activities. Reporting the email to the company can help protect yourself and others from falling victim to the scam.Rate this question:
-
- 27.
What is the main disadvantage of dot-matrix printer?
- A.
Very messy
- B.
Poor image quality
- C.
Very noisy
- D.
Slow speed
Correct Answer
B. Poor image qualityExplanation
The main disadvantage of a dot-matrix printer is poor image quality. Unlike other types of printers, dot-matrix printers use a matrix of small pins to create characters and images on paper. This results in a lower resolution and less sharpness compared to inkjet or laser printers. The dots used to create the images can be visible, leading to a less professional and less visually appealing printout.Rate this question:
-
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
May 16, 2009Quiz Created by
Bijoy3
Back to top