Can You Pass This Hardest CompTIA A+ Practice Computer Exam?
The CompTIA A+ Practice test is meant to assess your knowledge of working of Computer's software, hardware, and Networking in daily work. Whether you are a student or a professional, this quiz will help you out to learn new technical terms. Take your time. So, be ready to face the challenge and try to score more. All the best!
Questions and Answers
- 1.
Which of the following is not a hive in the Windows Registry?
- A.
HKEY_CLASSES_ROOT
- B.
HKEY_RESOURCES
- C.
HKEY_LOCAL_MACHINE
- D.
HKEY_USERS
- E.
HKEY_CURRENT_CONFIG
Correct Answer
B. HKEY_RESOURCESExplanation
The Windows Registry is a hierarchical database that stores configuration settings and options for the operating system and installed applications. It is organized into different hives, each representing a different aspect of the system. The hives listed in the options are all valid hives in the Windows Registry, except for HKEY_RESOURCES. HKEY_RESOURCES is not a valid hive in the Windows Registry.Rate this question:
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- 2.
Select two power options for a laptop
- A.
Docking station
- B.
Battery
- C.
AC power
- D.
Cooling pad
- E.
USB
Correct Answer(s)
B. Battery
C. AC powerExplanation
The correct answer is Battery and AC power. These are the two power options commonly used for laptops. The battery allows the laptop to be used without being plugged into an electrical outlet, providing portability. AC power refers to using a power adapter to connect the laptop to a wall outlet, ensuring a constant power supply and charging the battery if needed.Rate this question:
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- 3.
Where would you find the Degauze utility for a monitor?
- A.
On the monitor
- B.
In Windows display
- C.
On the Graphics card
- D.
USB
Correct Answer
A. On the monitorExplanation
The Degauze utility for a monitor can be found on the monitor itself. Degauzing is a process that helps to eliminate any magnetic interference on the screen, which can cause distortion or discoloration. The monitor is equipped with a degauze button or option that allows the user to perform this function. It is typically located on the front or side of the monitor, making it easily accessible for the user. Therefore, the correct answer is "On the monitor."Rate this question:
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- 4.
How many bits are there in a Rambus memory module?
- A.
8 bits
- B.
16 bits
- C.
32 bits
- D.
64 bits
- E.
24 bits
Correct Answer
C. 32 bitsExplanation
A Rambus memory module typically consists of 32 bits. This means that it can process and store 32 bits of data at a time.Rate this question:
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- 5.
What is the speed for IEEE 802.11g?
- A.
5.4Mbps
- B.
11MBps
- C.
54MBps
- D.
54Mbps
- E.
1.5Mbps
Correct Answer
D. 54MbpsExplanation
The correct answer is 54Mbps. The speed for IEEE 802.11g is 54Mbps. This is the maximum theoretical data rate that can be achieved on this wireless network standard. Mbps stands for megabits per second, which is a measure of data transfer speed.Rate this question:
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- 6.
Printer, files, and e-mail can all be categorized as_____________?
- A.
Office equipment
- B.
Protocols
- C.
Peer-to-peer networking
- D.
Resources
Correct Answer
D. ResourcesExplanation
Printer, files, and e-mail can all be categorized as resources. In an office setting, these items are considered valuable assets that are used to carry out various tasks and functions. A printer is a resource used for printing documents, files are resources used for storing and organizing information, and e-mail is a resource used for communication and exchanging messages. Therefore, these items can all be classified under the category of resources.Rate this question:
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- 7.
Which technology uses a physical characteristic to establish identity?
- A.
Surveillance
- B.
Smart Card
- C.
Biometrics
- D.
Working copies
- E.
Certificate
Correct Answer
C. BiometricsExplanation
Biometrics is the correct answer because it refers to the technology that uses physical characteristics, such as fingerprints, facial features, or iris patterns, to establish and verify an individual's identity. This technology is widely used in various applications, including access control systems, authentication processes, and identification purposes, as it provides a highly accurate and reliable method of identification based on unique physical traits.Rate this question:
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- 8.
Which topology uses a cetralized device to connect a network?
- A.
Mesh
- B.
Star
- C.
Ring
- D.
Bus
Correct Answer
B. StarExplanation
The correct answer is Star. In a star topology, all devices in the network are connected to a central device, such as a switch or a hub. This central device acts as a point of connection for all the other devices, allowing them to communicate with each other. This topology is commonly used in Ethernet networks, as it provides a centralized and efficient way of managing network traffic.Rate this question:
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- 9.
How would you descibe an older fax machine?
- A.
A lazer printer
- B.
Impact printer
- C.
Thermal printer
- D.
Dye-Sublimation printer
Correct Answer
C. Thermal printerExplanation
An older fax machine can be described as a thermal printer because it uses heat to transfer ink onto paper. Thermal printers work by heating special thermal paper, which contains a coating that turns black when heated. The heat generated by the fax machine's printhead selectively heats the paper, creating the desired text or image. This method is commonly used in older fax machines, where the thermal paper is fed through the machine and heated to produce the printed output.Rate this question:
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- 10.
Which is faster?
- A.
USB1
- B.
Firewire
- C.
IR
Correct Answer
B. FirewireExplanation
Firewire is faster than USB1 and IR. Firewire, also known as IEEE 1394, is a high-speed interface primarily used for connecting devices such as computers, digital cameras, and external hard drives. It has a maximum transfer rate of up to 800 Mbps, which is significantly faster than the maximum transfer rate of USB1 (12 Mbps) and IR (4 Mbps). Therefore, Firewire is the fastest option among the given choices.Rate this question:
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- 11.
Define a class B Subnet Mask
- A.
127.0.0.1
- B.
225.225.0.0
- C.
255.225.167.0
- D.
255.255.0.0
- E.
0.255.0.255
Correct Answer
D. 255.255.0.0Explanation
The given answer, 255.255.0.0, is the correct class B subnet mask. In IPv4 addressing, subnet masks are used to divide an IP address into a network address and a host address. Class B addresses have the first two octets reserved for the network address, and the remaining two octets for the host address. The subnet mask 255.255.0.0 has the first two octets set to all ones, indicating the network address, and the last two octets set to all zeros, indicating the host address. This subnet mask allows for a large number of hosts within the network.Rate this question:
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- 12.
How wide is a AGP bus
- A.
64 bits
- B.
32 bits
- C.
8 bits
- D.
16 bits
Correct Answer
A. 64 bitsExplanation
The AGP bus is 64 bits wide. This means that it can transfer 64 bits of data in parallel between the graphics card and the system memory. A wider bus allows for faster data transfer and can improve the overall performance of the graphics system.Rate this question:
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- 13.
What does checksum mean?
- A.
Memory low
- B.
Cmos battery low
- C.
Contrast ratio
- D.
Pixel pitch
- E.
Chip creep
Correct Answer
B. Cmos battery lowExplanation
The correct answer is "Cmos battery low." This refers to the status of the CMOS (Complementary Metal-Oxide-Semiconductor) battery, which is responsible for powering the CMOS memory chip in a computer. When the CMOS battery is low, it indicates that the battery is running out of power and needs to be replaced. This can result in issues with the computer's BIOS settings, such as date and time resetting or the computer not booting up properly.Rate this question:
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- 14.
Which 2 of the following are today's best choices for Graphics cards?
- A.
ISA
- B.
PCI
- C.
PCIe
- D.
AGP
- E.
MCA
Correct Answer(s)
C. PCIe
D. AGPExplanation
PCIe and AGP are today's best choices for graphics cards because they offer faster data transfer rates and better performance compared to older interface standards like ISA and MCA. PCIe (Peripheral Component Interconnect Express) is the most widely used and fastest interface for graphics cards, providing high bandwidth and scalability. AGP (Accelerated Graphics Port) was popular in the past and still supports older systems, offering better performance than PCI. ISA (Industry Standard Architecture) and MCA (Micro Channel Architecture) are outdated and not suitable for modern graphics cards.Rate this question:
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- 15.
WPAN is also known as_____?
- A.
IR
- B.
Bluethooth
- C.
Star
- D.
Bus
Correct Answer
B. BluethoothExplanation
WPAN stands for Wireless Personal Area Network. It is a short-range wireless communication technology that allows devices to connect and communicate with each other within a limited range. One of the most popular WPAN technologies is Bluetooth, which is used for connecting devices such as smartphones, tablets, and laptops to peripherals like headphones, speakers, and keyboards. Therefore, the correct answer is Bluetooth.Rate this question:
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- 16.
A Piconet is limited to how many devices?
- A.
6
- B.
9
- C.
127
- D.
8
- E.
7
Correct Answer
D. 8Explanation
A Piconet is a network formed by Bluetooth devices, where one device acts as the master and the others as slaves. The master can connect to up to 7 slave devices, resulting in a total of 8 devices in the Piconet. Therefore, the correct answer is 8.Rate this question:
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- 17.
What color is a PS/2 mouse port
- A.
Blue
- B.
Green
- C.
Purple
- D.
Yellow
- E.
White
Correct Answer
B. GreenExplanation
The PS/2 mouse port is typically colored green. This color is used to differentiate it from other ports on a computer, such as the purple keyboard port. The green color coding helps users easily identify and connect their PS/2 mouse to the correct port on their computer.Rate this question:
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- 18.
Laptops are__________ more expensive than Desktops
- A.
60%
- B.
50%
- C.
90%
- D.
80%
- E.
70%
Correct Answer
D. 80%Explanation
Laptops are generally more expensive than desktops by around 80%. This means that, on average, the price of laptops is 80% higher than that of desktops. This can be attributed to several factors such as the portability and compactness of laptops, which require more advanced technology and engineering, as well as the higher demand for laptops in the market. Additionally, the cost of manufacturing and producing laptops may also contribute to their higher price compared to desktops.Rate this question:
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- 19.
In which step of the laser printing process does a uniform -600VDC charge get applied to the EP drum?
- A.
Conditioning
- B.
Charging
- C.
Writing
- D.
Transfering
- E.
Developing
Correct Answer
B. ChargingExplanation
In the laser printing process, the step where a uniform -600VDC charge is applied to the EP drum is called charging. This step prepares the drum to receive the image that will be printed. By applying a negative charge to the drum, it creates an electrostatic field that attracts the positively charged toner particles during the next step, writing. This ensures that the toner is accurately transferred onto the drum to form the desired image.Rate this question:
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- 20.
Select all the elements that can damage your laser printer
- A.
Heat
- B.
Light
- C.
Ozone
- D.
Ammonia
Correct Answer(s)
A. Heat
B. Light
C. Ozone
D. AmmoniaExplanation
Heat, light, ozone, and ammonia can all damage a laser printer. Heat can cause the internal components to overheat and malfunction. Excessive exposure to light can cause the toner to fade and affect the print quality. Ozone, which is produced by some electrical equipment, can corrode the printer's sensitive parts. Ammonia, commonly found in cleaning products, can react with the printer's components and cause damage. Therefore, it is important to keep laser printers away from these elements to ensure their longevity and proper functioning.Rate this question:
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- 21.
Which account do hackers often target on a database application?
- A.
Root
- B.
Database local account
- C.
Supervisor
- D.
Administrator/Systems
Correct Answer
B. Database local accountExplanation
Hackers often target the database local account on a database application because this account typically has access to the underlying database and its sensitive data. By gaining access to the database local account, hackers can potentially retrieve, manipulate, or delete valuable data stored within the database. This account is often a prime target as it holds significant privileges and can be exploited to compromise the entire database system.Rate this question:
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- 22.
Which of the following is not a type of printer?
- A.
Bubble-jet
- B.
Dot-matrix
- C.
Scanjet
- D.
Laser
Correct Answer
C. ScanjetExplanation
The given options are all types of printers except for "Scanjet." Bubble-jet, dot-matrix, and laser printers are all common types of printers used for various purposes. However, "Scanjet" is not a type of printer; it is a brand name for scanners produced by Hewlett-Packard (HP). Scanners are devices used to convert physical documents or images into digital format, not to print documents.Rate this question:
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- 23.
Which wireless protocol is an improvement on WEP?
- A.
WAP
- B.
WPA
- C.
WEP2
- D.
EPP
- E.
ECP
Correct Answer
B. WPAExplanation
WPA (Wi-Fi Protected Access) is an improvement on WEP (Wired Equivalent Privacy). WEP was the initial encryption protocol used for securing wireless networks, but it had several vulnerabilities that made it easy to crack. WPA was developed to address these weaknesses and provide stronger security for wireless networks. It introduced stronger encryption algorithms and implemented a more robust authentication process, making it a more secure option compared to WEP.Rate this question:
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- 24.
Floppy drive power connecter use_________ connectors
- A.
Molex
- B.
P8 P9
- C.
P1
- D.
Berg
Correct Answer
D. BergExplanation
The correct answer is Berg. Floppy drive power connectors use Berg connectors.Rate this question:
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- 25.
How would you define a NIC
- A.
RJ11
- B.
RJ45
- C.
RJ66
- D.
DA15
- E.
DB25
Correct Answer
B. RJ45Explanation
RJ45 is a type of connector commonly used for Ethernet networking. It has 8 pins and is designed to connect network devices such as computers, routers, and switches. The "RJ" stands for Registered Jack, indicating that it is a standardized interface. The "45" refers to the number of the wiring pattern used in the connector. RJ45 connectors are used for wired Ethernet connections and are widely used in both residential and commercial networks.Rate this question:
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- 26.
USB2 operates at________ Mbps
- A.
12
- B.
400
- C.
480
- D.
800
- E.
1.5
Correct Answer
C. 480Explanation
USB2 operates at a speed of 480 Mbps. This is the correct answer because USB2, also known as USB 2.0, is a widely used version of the USB standard that supports data transfer rates of up to 480 Mbps. This high-speed capability allows for faster file transfers and improved performance when using USB devices such as external hard drives, flash drives, and cameras.Rate this question:
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- 27.
Which is more expensive?
- A.
Peltier cooling
- B.
Water cooling
- C.
Air cooling
Correct Answer
B. Water coolingExplanation
Water cooling is more expensive compared to air cooling and Peltier cooling. This is because water cooling systems require additional components such as a water block, radiator, pump, and tubing, which can increase the overall cost. Additionally, water cooling systems often require more maintenance and installation expertise, adding to the expenses. On the other hand, air cooling is the most affordable option as it only requires a heat sink and fan, while Peltier cooling, which uses thermoelectric modules, can be more expensive due to the specialized technology involved.Rate this question:
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- 28.
Which motherboard design style is most popular?
- A.
ATX
- B.
NLX
- C.
BTX
- D.
Baby AT
- E.
AT
Correct Answer
A. ATXExplanation
ATX is the most popular motherboard design style. It is widely used in desktop computers due to its larger size and compatibility with various components. ATX motherboards offer more expansion slots, better cooling options, and improved power delivery. They also support multiple graphics cards and have standardized dimensions, making it easier to find compatible cases. ATX motherboards have become the industry standard, offering a balance between performance, flexibility, and compatibility.Rate this question:
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- 29.
What type of expansion slot is almost always used for high speed, 3D grapics video cards?
- A.
USB
- B.
AGP
- C.
ISA
- D.
PCI
Correct Answer
B. AGPExplanation
AGP (Accelerated Graphics Port) is almost always used for high-speed, 3D graphics video cards. AGP provides a direct connection between the graphics card and the computer's memory, allowing for faster data transfer and improved performance. USB, ISA, and PCI are not typically used for high-speed graphics cards, making AGP the correct choice.Rate this question:
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- 30.
How thich is a Type I card
- A.
10.5mm
- B.
3mm
- C.
3.3mm
- D.
5mm
- E.
5.5mm
Correct Answer
C. 3.3mmExplanation
A Type I card is 3.3mm thick.Rate this question:
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- 31.
How do you access the Task managwer in Windows XP?
- A.
Shift+Del
- B.
Ctrl+Alt+Del
- C.
Tab+Esc
- D.
Alt+Tab+Shift
Correct Answer
B. Ctrl+Alt+DelExplanation
To access the Task Manager in Windows XP, you need to press Ctrl+Alt+Del. This key combination brings up a menu where you can choose to open the Task Manager. The Task Manager allows you to view and manage running processes, monitor system performance, and end unresponsive applications.Rate this question:
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- 32.
Which is not a OSI model Layer?
- A.
Network-link Layer
- B.
Application Layer
- C.
Session Layer
- D.
Data-link Layer
- E.
Transport Layer
Correct Answer
A. Network-link LayerExplanation
The OSI model consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. The Network-link Layer is not a valid layer in the OSI model.Rate this question:
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- 33.
Where would you find the MAC address
- A.
Network Layer
- B.
Network-link Layer
- C.
Application Layer
- D.
Data-link Layer
- E.
Transport Layer
Correct Answer
D. Data-link LayerExplanation
The MAC address, also known as the Media Access Control address, is a unique identifier assigned to a network interface card (NIC) by the manufacturer. It is used to identify devices on a local network. The Data-link Layer is responsible for the transmission of data between nodes on the same network segment. This layer is where the MAC address is found, as it is used to address and deliver data packets within the local network.Rate this question:
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- 34.
Which topology is the easiest to modify?
- A.
Token Ring
- B.
Mesh
- C.
Bus
- D.
Star
- E.
Wireless
Correct Answer
D. StarExplanation
The star topology is the easiest to modify because each device is connected directly to a central hub or switch. This means that adding or removing devices can be done without disrupting the entire network. In a star topology, if one device fails, it does not affect the rest of the network, making troubleshooting and maintenance easier. Additionally, the star topology allows for easy scalability as new devices can be added to the network simply by connecting them to the central hub.Rate this question:
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- 35.
How fast is a AGP bus? choose 2
- A.
8MHz
- B.
33MHz
- C.
66MHz
- D.
133MHz
- E.
250MB/s
Correct Answer(s)
C. 66MHz
D. 133MHzExplanation
The AGP bus can operate at two different speeds, 66MHz and 133MHz. These speeds determine the rate at which data can be transferred between the graphics card and the computer's memory. The higher the speed, the faster the data transfer rate. Therefore, the correct answers are 66MHz and 133MHz.Rate this question:
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- 36.
What comes after the Charging step in a Laser printer
- A.
Cleaning
- B.
Developing
- C.
Writing
- D.
Fusing
Correct Answer
C. WritingExplanation
After the charging step in a laser printer, the next step is writing. In this step, a laser beam is used to create a static charge pattern on the drum or photoconductor. The laser selectively removes the positive charge from areas that will correspond to the printed image, while leaving the rest of the drum positively charged. This creates an electrostatic image of the page to be printed. The writing step is followed by the developing step, where toner particles are attracted to the charged areas on the drum to form the image.Rate this question:
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- 37.
Which are the two Chipsets found on computers?
- A.
Northbridge
- B.
Westbridge
- C.
Southbridge
- D.
Eastbridge
Correct Answer(s)
A. Northbridge
C. SouthbridgeExplanation
The correct answer is Northbridge and Southbridge. These two chipsets are commonly found on computers. The Northbridge handles the faster components of the computer, such as the processor, memory, and graphics card. The Southbridge, on the other hand, handles the slower components, including the hard drive, USB ports, and audio devices. Together, these chipsets work together to ensure smooth communication and data transfer between the various components of the computer.Rate this question:
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- 38.
Which Raid requires a minimum of three drives?
- A.
RAID 1
- B.
RAID 0
- C.
RAID 5
Correct Answer
C. RAID 5Explanation
RAID 5 requires a minimum of three drives because it uses striping with distributed parity. In this configuration, data is divided into blocks and written across multiple drives, with parity information distributed across all drives. The parity information allows for data recovery in case of a drive failure. With three drives, one drive can fail while the data can still be reconstructed using the parity information. RAID 1, on the other hand, is a mirroring configuration that requires a minimum of two drives, while RAID 0 is a striping configuration that does not provide any redundancy and can work with just one drive.Rate this question:
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- 39.
Type III cards are normally used for_________
- A.
Modems
- B.
Memory cards
- C.
Hard drives
- D.
Sound cards
Correct Answer
C. Hard drivesExplanation
Type III cards are normally used for hard drives because they are larger in size compared to Type I and Type II cards. Type III cards provide more space and are designed to accommodate larger storage devices like hard drives. Modems, memory cards, and sound cards are typically smaller in size and can fit into Type I or Type II cards. Therefore, Type III cards are the most suitable option for hard drives.Rate this question:
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- 40.
How many pinns does a Dot-matrix printer have? select 2
- A.
5
- B.
9
- C.
24
- D.
16
- E.
50
Correct Answer(s)
B. 9
C. 24Explanation
Dot-matrix printers have multiple pins that strike against an ink ribbon to create printed characters. The number of pins determines the quality and clarity of the printed output. A higher number of pins results in a higher print resolution. Therefore, a Dot-matrix printer typically has either 9 or 24 pins. These options provide different levels of print quality, with 24-pin printers offering better resolution and sharper text and graphics compared to 9-pin printers.Rate this question:
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Mar 18, 2022Quiz Edited by
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Mar 21, 2008Quiz Created by
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