Computer Hardware Important Mcqs 1- Which part of the computer is known as its "brain" ? A. RAMB. CPUC. Hard DriveD. Power Supply View Answer Answer : B. CPU Description 2- Which hardware component is used to store data permanently ? A. RAMB. Cache MemoryC. ROMD. Hard Disk Drive View Answer Answer : D. Hard Disk Drive Description 3- Which of the following is responsible for displaying output to the user ? A. MonitorB. KeyboardC. MouseD. Scanner View Answer Answer : A. Monitor Description 4- Which component connects all hardware parts in a computer ? A. MotherboardB. ProcesserC. RAMD. Power Supply View Answer Answer : A. Motherboard Description 5- Which type of memory is used for temporary data storage ? A. ROMB. RAMC. Hard DiskD. SSD View Answer Answer : B. RAM Description 6- Which device is used to input text into a computer ? A. MouseB. ScannerC. KeyboardD. Monitor View Answer Answer : C. Keyboard Description 7- Which part of the computer supplies power to all components ? A. MotherboardB. CPUC. RAMD. Power Supply Unit (PSU) View Answer Answer : D. Power Supply Unit (PSU) Description 8- Which port is used to connect an external monitor ? A. USBB. HDMIC. EthernetD. Audio Jack View Answer Answer : B. HDMI Description 9- Which component is responsible for rendering graphics ? A. CPUB. RAMC. Hard DriveD. GPU View Answer Answer : D. GPU (Graphics Processing Unit) Description 10- Which of the following is used to store BIOS settings ? A. Hard DiskB. RAMC. CMOS BatteryD. Sound Card View Answer Answer : C. CMOS Battery Description 11- Which type of storage device has no moving parts ? A. CD-ROMB. Floppy DiskC. Hard Disk DriveD. Solid-State Drive View Answer Answer : D. Solid-State Drive Description 12- Which component is used to connect a computer to a network ? A. Network Interface CardB. GPUC. Hard DriveD. USB View Answer Answer : A. Network Interface Card Description 13- Which device is used to print documents from a computer ? A. PrinterB. ScannerC. ProjectorD. Monitor View Answer Answer : A. Printer Description 14- Which component acts as the main circuit board of the computer ? A. RAMB. CPUC. Hard DriveD. Motherboard View Answer Answer : D. Motherboard Description 15- Which input device is used to control the cursor on the screen ? A. MouseB. ScannerC. KeyboardD. Monitor View Answer Answer : A. Mouse Description 16- Which type of cable is commonly used for connecting storage devices inside a computer ? A. EthernetB. HDMIC. SATAD. USB View Answer Answer : C. SATA Description 17- Which component processes instructions and calculations in a computer ? A. RAMB. Hard DriveC. CPUD. PSU View Answer Answer : C. CPU Description 18- What is the function of an optical drive ? A. Improve internet speedB. Transfer data between RAM and CPUC. Read and write data from CDs/DVDsD. Store and retrieve data from a hard disk View Answer Answer : C. Read and write data from CDs/DVDs Description 19- Which device allows users to digitize physical documents ? A. PointerB. MonitorC. ProjectorD. Scanner View Answer Answer : D. Scanner Description 20- Which component helps to keep the CPU cool ? A. Heat SinkB. Power SupplyC. Hard DriveD. Network Card View Answer Answer : Description 1 2 3 4 5
