CompTIA A+ Practice Questions Flashcards
Which type of memory is typically used for cache?
- a) DRAM
- b) SRAM
- c) VRAM
- d) Flash memory
b) SRAM
What is the purpose of a motherboard’s chipset?
- a) To store the operating system
- b) To connect the CPU to other components
- c) To provide power to the CPU
- d) To cool the CPU
b) To connect the CPU to other components
Which type of RAM is used in laptops due to its smaller size?
- a) DIMM
- b) RIMM
- c) SIMM
- d) SO-DIMM
d) SO-DIMM
What is the maximum data transfer rate of USB 3.0?
- a) 480 Mbps
- b) 5 Gbps
- c) 10 Gbps
- d) 20 Gbps
b) 5 Gbps
Which type of connector is commonly used for analog video output?
- a) HDMI
- b) DisplayPort
- c) VGA
- d) DVI
c) VGA
What is the function of a power supply unit (PSU) in a computer?
- a) To provide network connectivity
- b) To supply electrical power to the components
- c) To cool the CPU
- d) To store data
b) To supply electrical power to the components
Which of the following is an example of non-volatile memory?
- a) RAM
- b) Cache
- c) ROM
- d) Register
c) ROM
Which type of storage uses magnetic disks to store data?
- a) SSD
- b) HDD
- c) USB flash drive
- d) Optical disk
b) HDD
Which port is typically used to connect a printer to a computer?
- a) VGA
- b) HDMI
- c) USB
- d) RJ45
c) USB
Which tool can be used to test the functionality of a power supply?
- a) Multimeter
- b) POST card
- c) Cable tester
- d) Loopback plug
a) Multimeter
What is the primary function of a switch in a network?
- a) Route data between different networks
- b) Provide IP addresses to devices
- c) Connect multiple devices within the same network
- d) Store and manage files
c) Connect multiple devices within the same network
Which protocol is used to resolve IP addresses to MAC addresses?
- a) DHCP
- b) DNS
- c) ARP
- d) FTP
c) ARP
What is the default port number for HTTP?
- a) 20
- b) 21
- c) 80
- d) 443
c) 80
Which type of network cable uses light to transmit data?
- a) Twisted pair
- b) Coaxial
- c) Fiber optic
- d) Serial
c) Fiber optic
What is the primary purpose of DHCP in a network?
- a) To resolve domain names to IP addresses
- b) To dynamically assign IP addresses to devices
- c) To provide secure remote access
- d) To manage file sharing
b) To dynamically assign IP addresses to devices
Which wireless standard operates at 2.4 GHz and 5 GHz frequencies?
- a) 802.11a
- b) 802.11b
- c) 802.11g
- d) 802.11n
d) 802.11n
What is the function of a firewall in a network?
- a) To filter and block unauthorized access
- b) To provide IP addresses to devices
- c) To store and manage files
- d) To connect multiple devices within the same network
a) To filter and block unauthorized access
Which device connects multiple networks and directs data packets between them?
- a) Switch
- b) Router
- c) Hub
- d) Bridge
b) Router
Which IP address class allows for the largest number of individual host addresses?
- a) Class A
- b) Class B
- c) Class C
- d) Class D
a) Class A
What is the purpose of NAT (Network Address Translation)?
- a) To translate domain names to IP addresses
- b) To secure data transmission over the internet
- c) To convert private IP addresses to public IP addresses
- d) To route data packets within a local network
c) To convert private IP addresses to public IP addresses
Which component in a mobile device is responsible for detecting its orientation?
- a) Gyroscope
- b) Accelerometer
- c) Magnetometer
- d) Proximity sensor
b) Accelerometer
Which operating system is primarily used on Apple mobile devices?
- a) Android
- b) iOS
- c) Windows Mobile
- d) BlackBerry OS
b) iOS
What type of display technology is commonly used in modern smartphones?
- a) CRT
- b) LCD
- c) OLED
- d) Plasma
c) OLED
Which feature allows a smartphone to make contactless payments?
- a) Wi-Fi
- b) Bluetooth
- c) NFC
- d) GPS
c) NFC
What is the purpose of a VPN on a mobile device?
- a) To increase battery life
- b) To enhance data transmission speed
- c) To secure data transmission over public networks
- d) To store backup data
c) To secure data transmission over public networks
Which type of mobile device connectivity allows for high-speed internet access on the go?
- a) Wi-Fi
- b) Bluetooth
- c) Cellular
- d) NFC
c) Cellular
What is the purpose of a SIM card in a mobile device?
- a) To store applications
- b) To connect to Wi-Fi networks
- c) To identify the subscriber to the mobile network
- d) To increase storage capacity
c) To identify the subscriber to the mobile network
Which wireless technology is commonly used for short-range communication between devices?
- a) Wi-Fi
- b) Bluetooth
- c) Cellular
- d) GPS
b) Bluetooth
What is the purpose of the IMEI number on a mobile device?
- a) To identify the device on a mobile network
- b) To store user data
- c) To enable Wi-Fi connectivity
- d) To provide GPS location
a) To identify the device on a mobile network
Which mobile device feature allows for wireless charging?
- a) NFC
- b) Bluetooth
- c) Inductive charging
- d) Wi-Fi
c) Inductive charging
What is the first step in the troubleshooting process?
- a) Establish a theory of probable cause
- b) Identify the problem
- c) Test the theory to determine cause
- d) Document findings, actions, and outcomes
b) Identify the problem
Which tool can be used to test the integrity of network cables?
- a) Multimeter
- b) POST card
- c) Cable tester
- d) Loopback plug
c) Cable tester
What is a common symptom of a failing hard drive?
- a) Slow performance
- b) Blue screen errors
- c) Unusual noises
- d) All of the above
d) All of the above
Which utility can be used to check the health of a hard drive in Windows?
- a) Disk Cleanup
- b) Task Manager
- c) Disk Management
- d) chkdsk
d) chkdsk
What should you do if a computer does not power on when the power button is pressed?
- a) Check the power supply connection
- b) Replace the motherboard
- c) Reinstall the operating system
- d) Reset the BIOS
a) Check the power supply connection
What is the purpose of safe mode in Windows?
- a) To perform regular tasks with enhanced performance
- b) To access the internet safely
- c) To troubleshoot and fix system issues with minimal drivers and services
- d) To secure data from unauthorized access
c) To troubleshoot and fix system issues with minimal drivers and services
Which component is likely failing if a computer displays the “blue screen of death” (BSOD)?
- a) RAM
- b) CPU
- c) Hard drive
- d) Any of the above
d) Any of the above
What is the purpose of a POST (Power-On Self-Test)?
- a) To check for software updates
- b) To test the computer’s hardware components
- c) To clean the operating system
- d) To optimize system performance
b) To test the computer’s hardware components
What should you check if a laptop’s display is flickering?
- a) The graphics driver
- b) The display cable connection
- c) The power settings
- d) All of the above
d) All of the above
Which tool can help determine if a network issue is caused by a faulty network interface card (NIC)?
- a) Cable tester
- b) Loopback plug
- c) Multimeter
- d) POST card
b) Loopback plug
What is the primary benefit of virtualization?
- a) Enhanced physical security
- b) Reduced hardware costs
- c) Faster internet speeds
- d) Improved graphical performance
b) Reduced hardware costs
Which type of cloud service provides virtual machines and other resources over the internet?
- a) SaaS
- b) PaaS
- c) IaaS
- d) DaaS
c) IaaS
What is the purpose of a hypervisor?
- a) To provide network connectivity
- b) To manage virtual machines
- c) To store data securely
- d) To perform system backups
b) To manage virtual machines
Which cloud service model delivers software applications over the internet?
- a) SaaS
- b) PaaS
- c) IaaS
- d) DaaS
a) SaaS
What is a characteristic of public cloud services?
- a) Owned and operated by the user
- b) Accessible only within a private network
- c) Shared resources among multiple users
- d) Higher level of control over the infrastructure
c) Shared resources among multiple users
Which type of virtualization allows for running multiple operating systems on a single hardware platform?
- a) Server virtualization
- b) Network virtualization
- c) Storage virtualization
- d) Desktop virtualization
a) Server virtualization
What is the primary function of a virtual private network (VPN)?
- a) To enhance internet speed
- b) To secure data transmission over public networks
- c) To provide cloud storage
- d) To create virtual machines
b) To secure data transmission over public networks
Which cloud deployment model offers a combination of private and public cloud resources?
- a) Private cloud
- b) Public cloud
- c) Hybrid cloud
- d) Community cloud
c) Hybrid cloud
What is a benefit of using cloud storage services?
- a) Higher latency
- b) Increased control over physical hardware
- c) Scalability and accessibility
- d) Reduced need for internet access
c) Scalability and accessibility
Which tool can be used to manage multiple virtual machines on a single host?
- a) VPN
- b) Hypervisor
- c) Firewall
- d) Router
b) Hypervisor
What is the purpose of a standard operating procedure (SOP)?
- a) To increase productivity
- b) To document routine tasks and processes
- c) To train new employees
- d) To manage network devices
b) To document routine tasks and processes
Which type of documentation should be used to track changes to a system?
- a) Incident report
- b) Change log
- c) User manual
- d) Asset inventory
b) Change log
What is the primary purpose of a service level agreement (SLA)?
- a) To define the scope of IT services
- b) To outline the responsibilities of the IT team
- c) To specify the expected level of service and performance
- d) To provide training for IT staff
c) To specify the expected level of service and performance
Which best practice involves protecting sensitive information from unauthorized access?
- a) Asset management
- b) Data encryption
- c) System optimization
- d) Incident response
b) Data encryption
What is the purpose of an incident report?
- a) To document routine maintenance tasks
- b) To track changes to a system
- c) To provide a detailed account of an unexpected event
- d) To outline the responsibilities of the IT team
c) To provide a detailed account of an unexpected event
Which type of backup involves copying all files and data since the last full backup?
- a) Full backup
- b) Differential backup
- c) Incremental backup
- d) Snapshot
b) Differential backup
What is the purpose of a knowledge base in an IT environment?
- a) To provide training materials for new employees
- b) To document common issues and solutions
- c) To manage network devices
- d) To monitor system performance
b) To document common issues and solutions
Which tool can be used to monitor the performance of a network?
- a) Firewall
- b) Router
- c) Network analyzer
- d) VPN
c) Network analyzer
What is the purpose of asset management in an IT environment?
- a) To increase productivity
- b) To document routine tasks and processes
- c) To track and manage IT assets
- d) To provide training for IT staff
c) To track and manage IT assets
Which best practice involves creating a copy of data to prevent data loss?
- a) Data encryption
- b) Backup
- c) Change management
- d) Incident response
b) Backup
What is the primary purpose of an antivirus program?
- a) To increase system performance
- b) To protect against malware
- c) To manage network connections
- d) To perform system backups
b) To protect against malware
Which type of attack involves sending fraudulent emails to trick users into revealing personal information?
- a) Phishing
- b) DDoS
- c) Man-in-the-middle
- d) SQL injection
a) Phishing
What is the purpose of a firewall in a network security context?
- a) To enhance internet speed
- b) To monitor and control incoming and outgoing network traffic
- c) To provide cloud storage
- d) To create virtual machines
b) To monitor and control incoming and outgoing network traffic
Which type of encryption is commonly used to secure data transmitted over wireless networks?
- a) WEP
- b) WPA2
- c) DES
- d) AES
b) WPA2
What is the purpose of two-factor authentication (2FA)?
- a) To increase system performance
- b) To require two forms of identification for access
- c) To provide secure file storage
- d) To monitor network traffic
b) To require two forms of identification for access
Which type of attack involves overwhelming a system with traffic to make it unavailable to users?
- a) Phishing
- b) DDoS
- c) Man-in-the-middle
- d) SQL injection
b) DDoS
What is the purpose of a digital certificate?
- a) To encrypt data
- b) To verify the identity of a website or user
- c) To manage network connections
- d) To perform system backups
b) To verify the identity of a website or user
Which security measure can protect data on a lost or stolen mobile device?
- a) VPN
- b) Firewall
- c) Remote wipe
- d) Antivirus
c) Remote wipe
What is the purpose of encryption?
- a) To increase system performance
- b) To convert data into a secure format
- c) To manage network connections
- d) To perform system backups
b) To convert data into a secure format
Which type of malware encrypts a user’s files and demands payment for the decryption key?
- a) Virus
- b) Worm
- c) Trojan
- d) Ransomware
d) Ransomware
What is an important aspect of effective communication in IT support?
- a) Using technical jargon
- b) Speaking quickly
- c) Listening actively
- d) Avoiding eye contact
c) Listening actively
Which type of communication is most appropriate for documenting troubleshooting steps?
- a) Verbal communication
- b) Written communication
- c) Nonverbal communication
- d) Visual communication
b) Written communication
What is the purpose of an escalation procedure in IT support?
- a) To handle high-priority issues
- b) To perform routine maintenance
- c) To increase system performance
- d) To secure data from unauthorized access
a) To handle high-priority issues
Which quality is essential for IT support professionals when dealing with frustrated users?
- a) Patience
- b) Technical knowledge
- c) Speed
- d) Assertiveness
a) Patience
What is the purpose of a user manual?
- a) To document changes to a system
- b) To provide instructions on how to use a product or service
- c) To track IT assets
- d) To manage network devices
b) To provide instructions on how to use a product or service
Which skill is important for IT support professionals when explaining technical issues to non-technical users?
- a) Technical jargon
- b) Time management
- c) Problem-solving
- d) Simplifying complex concepts
d) Simplifying complex concepts
What is the purpose of a feedback loop in IT support?
- a) To document troubleshooting steps
- b) To track changes to a system
- c) To gather user feedback for continuous improvement
- d) To manage IT assets
c) To gather user feedback for continuous improvement
Which practice involves providing clear and concise updates to users during the troubleshooting process?
- a) Incident response
- b) Active listening
- c) Effective communication
- d) Time management
c) Effective communication
What is the importance of documenting IT support activities?
- a) To provide training materials for new employees
- b) To track and resolve issues efficiently
- c) To manage network connections
- d) To monitor system performance
b) To track and resolve issues efficiently
Which quality helps IT support professionals build trust with users?
- a) Technical knowledge
- b) Assertiveness
- c) Empathy
- d) Speed
c) Empathy
Which tool would you use to test the integrity of a network cable?
- a) Multimeter
- b) Cable tester
- c) Tone generator
- d) Crimper
b) Cable tester
What is the first step in troubleshooting a non-booting computer?
- a) Check the power supply
- b) Replace the motherboard
- c) Reinstall the operating system
- d) Test the RAM
a) Check the power supply connection
Which of the following symptoms indicates a failing hard drive?
- a) Flickering monitor
- b) Frequent blue screen errors
- c) Slow internet speed
- d) Unresponsive keyboard
b) Frequent blue screen errors
What is the purpose of a POST card in hardware troubleshooting?
- a) To test the network connectivity
- b) To diagnose boot process errors
- c) To measure power supply voltages
- d) To check for software issues
b) To diagnose boot process errors
Which command-line tool can be used to release and renew an IP address in Windows?
- a) ipconfig
- b) netstat
- c) ping
- d) tracert
a) ipconfig
What should you check if a laptop’s display is extremely dim?
- a) Screen resolution settings
- b) Power cable connection
- c) Brightness settings or inverter
- d) Network settings
c) Brightness settings or inverter
Which RAID level provides redundancy and improved performance but requires at least four disks?
- a) RAID 0
- b) RAID 1
- c) RAID 5
- d) RAID 10
d) RAID 10
What is the purpose of the Safe Mode boot option in Windows?
- a) To enhance system performance
- b) To troubleshoot and fix software issues
- c) To update the operating system
- d) To install new hardware
b) To troubleshoot and fix software issues
What does the acronym UPS stand for in the context of computer hardware?
- a) Universal Power Supply
- b) Uninterruptible Power Supply
- c) Unified Power System
- d) User Power Supply
b) Uninterruptible Power Supply
Which component is most likely to cause a computer to shut down unexpectedly due to overheating?
- a) Hard drive
- b) CPU
- c) RAM
- d) Network card
b) CPU
