61. Which of these is a characteristic of a multi-core processor?
- a) Executes multiple tasks simultaneously
- b) Increases single-thread performance only
- c) Reduces power consumption linearly
- d) Eliminates the need for RAM
Answer: A - Multi-core CPUs handle parallel tasks by dividing workloads across cores.
62. What is the purpose of the Northbridge in a chipset?
- a) Manages high-speed communication between CPU, RAM, and GPU
- b) Connects USB devices
- c) Stores BIOS settings
- d) Controls cooling fans
Answer: A - The Northbridge handles data flow between critical high-speed components.
63. Which type of software is directly responsible for controlling hardware?
- a) Device drivers
- b) Word processors
- c) Web browsers
- d) Spreadsheet applications
Answer: A - Device drivers enable the OS to interact with specific hardware components.
64. What is the primary advantage of DDR4 RAM over DDR3?
- a) Higher data transfer rates
- b) Lower power consumption
- c) Larger physical size
- d) Compatibility with older motherboards
Answer: A - DDR4 offers faster speeds (up to 3200 MHz) and improved efficiency.
65. Which component is essential for wireless network connectivity?
- a) Wi-Fi adapter
- b) Ethernet cable
- c) HDMI port
- d) VGA connector
Answer: A - Wi-Fi adapters enable devices to connect to wireless networks.
66. What is the function of an interrupt request (IRQ) in a CPU?
- a) Signals the CPU to pause current tasks for urgent events
- b) Increases clock speed temporarily
- c) Manages power supply fluctuations
- d) Stores backup data
Answer: A - IRQs allow hardware devices to request immediate CPU attention.
67. Which storage technology uses spinning magnetic platters?
- a) HDD (Hard Disk Drive)
- b) SSD (Solid State Drive)
- c) USB Flash Drive
- d) NVMe SSD
Answer: A - HDDs store data on rotating magnetic disks with read/write heads.
68. What is the purpose of the CMOS battery on a motherboard?
- a) Powers the BIOS memory to retain settings
- b) Provides backup power to the CPU
- c) Charges the laptop battery
- d) Connects to the GPU
Answer: A - The CMOS battery maintains BIOS/UEFI settings when the PC is off.
69. Which protocol is used for dynamically assigning IP addresses?
- a) DHCP
- b) DNS
- c) FTP
- d) HTTP
Answer: A - DHCP (Dynamic Host Configuration Protocol) automates IP address allocation.
70. What is the role of a kernel in an operating system?
- a) Manages system resources and hardware communication
- b) Displays graphical user interfaces
- c) Runs antivirus scans
- d) Stores user documents
Answer: A - The kernel is the core component handling memory, processes, and security.
71. Which of these is a disadvantage of using a virtual machine?
- a) Performance overhead due to resource sharing
- b) Inability to run multiple OSes
- c) Higher cost than physical hardware
- d) Requires no additional storage
Answer: A - VMs introduce latency as they share host system resources.
72. What does PCIe stand for?
- a) Peripheral Component Interconnect Express
- b) Portable Computer Interface Extension
- c) Processor Cache Integrated Element
- d) Power Control Internal Engine
Answer: A - PCIe is a high-speed expansion bus standard for GPUs, SSDs, etc.
73. Which of these is a feature of an SSD compared to an HDD?
- a) No moving parts
- b) Higher storage capacity per dollar
- c) Slower read/write speeds
- d) Better for long-term archival storage
Answer: A - SSDs use flash memory, making them more durable and faster than HDDs.
74. What is the purpose of a QR code?
- a) Stores data in a machine-readable format
- b) Encrypts sensitive information
- c) Boosts Wi-Fi signals
- d) Functions as a computer virus
Answer: A - QR codes encode data (e.g., URLs, text) for quick scanning.
75. Which of these is a function of an operating system's file system?
- a) Organizes and manages stored data
- b) Increases CPU clock speed
- c) Connects to Bluetooth devices
- d) Optimizes internet bandwidth
Answer: A - File systems (e.g., NTFS, ext4) control how data is stored/retrieved.
76. What is the binary representation of the decimal number 25?
- a) 11001
- b) 10101
- c) 10011
- d) 11110
Answer: A - 25 in decimal = 16 + 8 + 1 = 11001 in binary.
77. Which networking device operates at Layer 3 of the OSI model?
- a) Router
- b) Switch
- c) Hub
- d) Repeater
Answer: A - Routers use IP addresses to forward packets between networks.
78. What is the primary purpose of an assembler in programming?
- a) Converts assembly language to machine code
- b) Executes high-level code directly
- c) Optimizes database queries
- d) Manages virtual memory
Answer: A - Assemblers translate human-readable assembly code into binary.
79. Which of these is a characteristic of a 64-bit processor?
- a) Can address more than 4GB of RAM
- b) Runs only 32-bit software
- c) Has fewer registers than a 32-bit CPU
- d) Slower clock speeds than 32-bit CPUs
Answer: A - 64-bit CPUs support larger memory addressing (theoretically up to 16 exabytes).
80. What is the purpose of a checksum in data transmission?
- a) Verifies data integrity
- b) Encrypts sensitive information
- c) Compresses files
- d) Increases transmission speed
Answer: A - Checksums detect errors by comparing hash values before/after transfer.