Podcast
Questions and Answers
Which case type should you select?
Which case type should you select?
- Desktop
- Mini-tower
- Full tower
- Micro-ATX slim tower (correct)
Which of the following motherboard form factors BEST allows for low-consumption power supplies?
Which of the following motherboard form factors BEST allows for low-consumption power supplies?
- Micro-ATX
- ATX
- Mini-ITX (correct)
- NLX
Which of the following form factors does not have expansion slots on the motherboard, but instead uses a riser card for expansion cards?
Which of the following form factors does not have expansion slots on the motherboard, but instead uses a riser card for expansion cards?
- NLX (correct)
- Mini-ITX
- Micro-ATX
- ATX
What is the BEST method for using a newly purchased PCI card that doesn’t fit due to height?
What is the BEST method for using a newly purchased PCI card that doesn’t fit due to height?
What is a valid type of power supply that separates multiple power circuits?
What is a valid type of power supply that separates multiple power circuits?
What is the least expensive option for connecting an 8-pin PCIe connector?
What is the least expensive option for connecting an 8-pin PCIe connector?
Which statements are true regarding power supply wattage? (Select TWO)
Which statements are true regarding power supply wattage? (Select TWO)
What should you do if the voltage on the red wire of a 4-pin Molex connector is +5.1 volts?
What should you do if the voltage on the red wire of a 4-pin Molex connector is +5.1 volts?
What should you do if the voltage on the yellow wire of a 4-pin Molex connector is +10.1 volts?
What should you do if the voltage on the yellow wire of a 4-pin Molex connector is +10.1 volts?
Which of the following options are the MOST common voltages produced by the power supply? (Select TWO)
Which of the following options are the MOST common voltages produced by the power supply? (Select TWO)
What is the MOST likely cause of the computer hanging after POST when the date and time are incorrect in UEFI?
What is the MOST likely cause of the computer hanging after POST when the date and time are incorrect in UEFI?
What should you do to install a 32-bit application on a dual-core 64-bit processor?
What should you do to install a 32-bit application on a dual-core 64-bit processor?
What feature allows a single Intel processor to run two threads in parallel?
What feature allows a single Intel processor to run two threads in parallel?
What does multi-core refer to in processors?
What does multi-core refer to in processors?
What is a characteristic of a multi-processor system?
What is a characteristic of a multi-processor system?
Why might virtual machines run slowly on a single-core CPU configured to use hyper-threading?
Why might virtual machines run slowly on a single-core CPU configured to use hyper-threading?
What is the purpose of a CPU socket?
What is the purpose of a CPU socket?
Which of the following BEST describes AMD and why you would select this option? (Select TWO)
Which of the following BEST describes AMD and why you would select this option? (Select TWO)
What should you try first if a new processor doesn't work and the computer beeps with no display?
What should you try first if a new processor doesn't work and the computer beeps with no display?
What actions would MOST likely rectify a processor upgrade issue when the computer beeps and shows no screen? (Select TWO)
What actions would MOST likely rectify a processor upgrade issue when the computer beeps and shows no screen? (Select TWO)
What can fix the issue of Windows only recognizing 3.5 GB of RAM from two 4 GB modules?
What can fix the issue of Windows only recognizing 3.5 GB of RAM from two 4 GB modules?
What component will most likely need to upgrade to fully utilize a 64-bit processor?
What component will most likely need to upgrade to fully utilize a 64-bit processor?
What is the MOST efficient cooling system to prevent CPU overheating?
What is the MOST efficient cooling system to prevent CPU overheating?
What is MOST likely causing a computer to automatically shut down after upgrading the CPU?
What is MOST likely causing a computer to automatically shut down after upgrading the CPU?
Which computer design concept allows different manufacturer monitors to work with a desktop computer?
Which computer design concept allows different manufacturer monitors to work with a desktop computer?
Which device uses a female TRS connector?
Which device uses a female TRS connector?
Which port type does a dot matrix printer with a 25-pin D-shaped connector connect to?
Which port type does a dot matrix printer with a 25-pin D-shaped connector connect to?
How would you describe the connector that connects a computer to a projector with only a VGA port?
How would you describe the connector that connects a computer to a projector with only a VGA port?
What is a key feature of the DisplayPort interface?
What is a key feature of the DisplayPort interface?
Which port should be used for a monitor that uses a digital interface?
Which port should be used for a monitor that uses a digital interface?
What is the best cable type for connecting a laptop to an LED TV for presentations?
What is the best cable type for connecting a laptop to an LED TV for presentations?
Which connector is used to attach a mouse to a modern PC system?
Which connector is used to attach a mouse to a modern PC system?
How many pins are on a VGA connector?
How many pins are on a VGA connector?
What is the term for a set of programs that acts as an interface between applications and hardware?
What is the term for a set of programs that acts as an interface between applications and hardware?
What does multiprocessing refer to?
What does multiprocessing refer to?
What is multitasking?
What is multitasking?
What is the concept of multithreading?
What is the concept of multithreading?
What is the name of the operating system core feature that manages security and file systems?
What is the name of the operating system core feature that manages security and file systems?
What are the features that improve Windows' visual appearance called?
What are the features that improve Windows' visual appearance called?
What Windows tool is used to browse the file system?
What Windows tool is used to browse the file system?
Which items are likely to be displayed in the notification area of a Windows operating system? (Select two.)
Which items are likely to be displayed in the notification area of a Windows operating system? (Select two.)
What component of Windows prompts the user for credentials to minimize unwanted software installations?
What component of Windows prompts the user for credentials to minimize unwanted software installations?
Which operating system features include Cortana, Cloud storage, and Microsoft Store?
Which operating system features include Cortana, Cloud storage, and Microsoft Store?
What command starts a new Bourne-again shell (bash) session?
What command starts a new Bourne-again shell (bash) session?
What command displays the IP addresses and subnet masks on a Linux system?
What command displays the IP addresses and subnet masks on a Linux system?
What command lists files and subdirectories in the current directory?
What command lists files and subdirectories in the current directory?
What command would you use to get information about the usage and command syntax of ifconfig?
What command would you use to get information about the usage and command syntax of ifconfig?
Which command moves a file to a specified directory on a Linux system?
Which command moves a file to a specified directory on a Linux system?
What command displays the present working directory?
What command displays the present working directory?
Which command shuts down a system after 10 minutes and sends a message to users?
Which command shuts down a system after 10 minutes and sends a message to users?
What command allows a user with limited privileges to switch to root user?
What command allows a user with limited privileges to switch to root user?
Which Mac OS feature allows installing Windows on a Mac computer?
Which Mac OS feature allows installing Windows on a Mac computer?
Which Mac feature is used for launching apps and switching between them?
Which Mac feature is used for launching apps and switching between them?
What scenario would require a technician to use the Force Quit feature?
What scenario would require a technician to use the Force Quit feature?
Which keyboard shortcut accesses the Force Quit feature on a Mac?
Which keyboard shortcut accesses the Force Quit feature on a Mac?
What is the name of the Mac feature that uses finger motions for scrolling?
What is the name of the Mac feature that uses finger motions for scrolling?
What is the primary modifier key on Apple systems?
What is the primary modifier key on Apple systems?
What key is used on Apple notebooks to access the F1-F12 keys?
What key is used on Apple notebooks to access the F1-F12 keys?
Which key is primarily used for text document navigation on Macs?
Which key is primarily used for text document navigation on Macs?
What key is used for application shortcuts and navigation on Mac keyboards?
What key is used for application shortcuts and navigation on Mac keyboards?
Which Mac features can be accessed through Mission Control? (Select three.)
Which Mac features can be accessed through Mission Control? (Select three.)
What feature could be used to find a forgotten spreadsheet in Mac OS?
What feature could be used to find a forgotten spreadsheet in Mac OS?
What is the first safety step before upgrading a video card?
What is the first safety step before upgrading a video card?
What should you do if a desktop computer has only a two-prong outlet for a three-prong cord?
What should you do if a desktop computer has only a two-prong outlet for a three-prong cord?
Which action could be most physically harmful when working with technology?
Which action could be most physically harmful when working with technology?
How should one obtain Material Safety Data Sheets (MSDS) for chemicals used in a shop?
How should one obtain Material Safety Data Sheets (MSDS) for chemicals used in a shop?
What is the purpose of an MSDS?
What is the purpose of an MSDS?
What should you do if the fan in a 450-watt power supply is malfunctioning?
What should you do if the fan in a 450-watt power supply is malfunctioning?
What is the top priority when responding to emergencies and hazardous situations?
What is the top priority when responding to emergencies and hazardous situations?
Which methods are safe for lifting heavy objects? (Select two.)
Which methods are safe for lifting heavy objects? (Select two.)
What type of cabling is best for communication in EMI-prone environments?
What type of cabling is best for communication in EMI-prone environments?
Which methods help reduce static discharge when working on computer hardware? (Select two.)
Which methods help reduce static discharge when working on computer hardware? (Select two.)
What provides the best protection against static electricity buildup in a computer repair environment?
What provides the best protection against static electricity buildup in a computer repair environment?
Where should the other end of an anti-static wrist strap be fastened? (Select two.)
Where should the other end of an anti-static wrist strap be fastened? (Select two.)
What should be done with non-rechargeable alkaline batteries after use?
What should be done with non-rechargeable alkaline batteries after use?
What is the best way to deal with old laptop batteries?
What is the best way to deal with old laptop batteries?
Which components require special disposal procedures for environmental compliance?
Which components require special disposal procedures for environmental compliance?
Which command displays a summary of how to use a command?
Which command displays a summary of how to use a command?
What command displays extensive documentation about the command?
What command displays extensive documentation about the command?
Which command changes directories in the file system?
Which command changes directories in the file system?
What command copies files and directories to another location?
What command copies files and directories to another location?
Which command moves and/or renames files in the file system?
Which command moves and/or renames files in the file system?
What command deletes files and directories from the file system?
What command deletes files and directories from the file system?
What command displays the contents of a text file?
What command displays the contents of a text file?
Which command pauses the output of a text file display one screen at a time?
Which command pauses the output of a text file display one screen at a time?
What command displays the first few lines of a text file?
What command displays the first few lines of a text file?
What command shows the last few lines of a text file?
What command shows the last few lines of a text file?
Which command edits the contents of a text file?
Which command edits the contents of a text file?
What command securely shuts down or reboots the system?
What command securely shuts down or reboots the system?
What type of computer is also known as a notebook?
What type of computer is also known as a notebook?
What is an appropriate use for a supercomputer?
What is an appropriate use for a supercomputer?
What concept allows one physical computer to run multiple virtual machines?
What concept allows one physical computer to run multiple virtual machines?
What is a hypervisor type 1?
What is a hypervisor type 1?
What is a hypervisor type 2?
What is a hypervisor type 2?
What type of computer design would allow upright placement on a desk with minimal space use?
What type of computer design would allow upright placement on a desk with minimal space use?
Flashcards
Computer Hardware Standardization
Computer Hardware Standardization
Ensuring that different devices from various manufacturers work together seamlessly.
Female TRS Connector
Female TRS Connector
A connector used for audio output to speakers.
Parallel Port
Parallel Port
An older type of connector used to connect printers.
VGA Port
VGA Port
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DisplayPort
DisplayPort
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DVI Port
DVI Port
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HDMI Cable
HDMI Cable
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USB Port
USB Port
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Operating System (OS)
Operating System (OS)
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Kernel
Kernel
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Windows Aero
Windows Aero
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File Explorer
File Explorer
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User Account Control (UAC)
User Account Control (UAC)
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Shutdown Command (Linux)
Shutdown Command (Linux)
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List Directory Contents (Linux)
List Directory Contents (Linux)
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Move File (Linux)
Move File (Linux)
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Copy File (Linux)
Copy File (Linux)
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Delete File (Linux)
Delete File (Linux)
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View File Contents (Linux)
View File Contents (Linux)
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Edit File (Linux)
Edit File (Linux)
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Change Current Directory (Linux)
Change Current Directory (Linux)
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Study Notes
Computer Hardware Connections
- Standardization: Allows compatibility between devices, e.g., different manufacturer monitors working with a desktop.
- Connectors:
- Female TRS connector: Used for speakers.
- Parallel port: Connects older dot matrix printers using a D-shaped 25-pin connector.
- VGA port: D-shaped with 15 pins, used for video projectors.
- DisplayPort: Supports simultaneous video and audio signals.
- DVI port: Required for connecting digital monitors.
- HDMI cable: Suitable for connecting laptops to TV for video and audio.
- USB port: Connects modern mice.
Operating Systems and Features
- Operating System: Acts as an interface between applications and hardware.
- Kernel: Manages security, file system, and application platform.
- Windows Aero: Enhances visual experience through effects and animations.
- File Explorer: Tool for navigating the file system in Windows.
- User Account Control (UAC): Prompts for permissions to minimize security risks.
Linux Command-Line Operations
- Command for new bash session:
bash - Display network interfaces:
ifconfig - List directory contents:
ls - Access manual for commands:
man ifconfig - Move files:
mv widget.txt /home/fred - Display current working directory:
pwd - Shutdown command:
shutdown -h +10 message - Switch to root user:
su -
Mac OS Operations
- Boot Camp: Allows installation of Windows alongside Mac OS.
- Force Quit: Use
Command + Option + Escto stop non-responsive applications. - Dock: Provides access to apps, Trash, and folders.
- Mission Control: Manages windows and desktops.
Technician Safety and Best Practices
- Disconnect power: First step when upgrading hardware.
- Use three-prong outlets: Ensures safe electrical connections for computers.
- Store batteries properly: Alkaline batteries can be trashed, while lithium-based batteries must be recycled.
- ESD precautions: Use ESD wrist straps and static shielding bags.
- Lift heavy objects correctly: Use legs, keep back straight.
Networking and Cables
- Fiber optic cables: Best option in EMI-heavy environments for network communication.
- Static electricity control: Maintain contact with chassis and use anti-static mats.
File Management Commands in Linux
- Copy files:
cp - Delete files:
rm - View file contents:
cat,less,head,tail - Edit files:
vi - Change directories:
cd
Computer Hardware Form Factors
- Micro-ATX slim tower: Ideal for compact desk setups.
- Mini-ITX: Supports low-consumption power supplies.
- NLX: Uses riser cards for expansions.
Power Supply Information
- Dual-rail power supplies: Balance load to prevent overload.
- Adapter solutions: Use when power supply lacks specific connectors.
Focus on Safety and Environmental Compliance
- Material Safety Data Sheets (MSDS): Required for handling hazardous materials, obtainable online from manufacturers.
- Top priority: Ensure the safety of all individuals in emergency situations.### Power Supply Requirements
- A system's wattage requirement is determined by the highest wattage need of an individual circuit, not by the total number of devices.
- The formula for calculating wattage: W = V x A (Watts = Volts x Amperes).
- Lower wattage ratings allow power supplies to deliver more amps.
Testing Power Supply Voltages
- A voltage of +5.1 volts on the red wire of a 4-pin Molex connector indicates normal operation.
- If the yellow wire measures +10.1 volts instead of the expected +12 volts, the power supply is failing and needs replacement.
- Common voltages produced by a standard power supply include +12 V and +5 V.
Motherboard and Battery Issues
- A computer hanging after POST with an incorrect date and time usually indicates a failed motherboard battery.
Processor Compatibility
- A dual-core 64-bit processor can run 32-bit applications natively without special configuration.
- Intel's hyper-threading technology allows a single processor to run multiple threads simultaneously.
- Multi-core refers to multiple processors integrated into a single chip.
Multi-Processor Systems
- A multi-processor system features several processor sockets on its motherboard for enhanced performance.
Virtual Machines Performance
- Slow performance in virtual machines may occur if running on a single-core CPU with hyper-threading.
CPU Socket Definition
- A CPU socket serves as the connector between the microprocessor and the motherboard.
AMD Processors
- AMD processors typically use a Pin Grid Array (PGA) socket type and are generally less expensive than competitors.
Upgrading Processors
- Updating UEFI firmware is a recommended first step when experiencing issues after a processor upgrade.
- Beeping noises upon booting may indicate compatibility problems with the installed CPU.
RAM Recognition Issues
- Windows may only recognize 3.5 GB of RAM with a 32-bit version, even if 8 GB is installed; upgrading to a 64-bit version resolves this.
Operating System Upgrades
- Upgrading to a 64-bit processor generally necessitates an operating system upgrade for full utilization of the hardware.
Cooling Systems
- An effective cooling solution for CPUs involves using an active heat sink, thermal paste, liquid pipes, and fans to prevent overheating.
Computer Shutdown Issues
- If a computer shuts down unexpectedly after starting, the most probable cause is a lack of power to the CPU fan, not necessarily a virus or a faulty CPU.
Studying That Suits You
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Description
Test your knowledge of CompTIA A+ concepts with these flashcards. Each card presents a scenario or question related to computer hardware and design principles, helping you prepare for the A+ certification exam.
