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Computer MCQs With Answers
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Which core component of an Operating System acts as the primary interface between hardware and application software, running with full system privileges?
AShell
BKernel
CCompiler
DBootloader
Which component of the Central Processing Unit (CPU) performs arithmetic operations and logical comparisons?
AControl Unit (CU)
BArithmetic Logic Unit (ALU)
CRegister Array
DCache Memory
Which POSIX system call is used in Unix/Linux operating systems to create a new child process?
Aexec()
Bfork()
Cwait()
Dexit()
Which type of memory is directly accessible by the CPU and retains data temporarily while the system is powered on?
AHard Disk Drive (HDD)
BRead-Only Memory (ROM)
CRandom Access Memory (RAM)
DSolid State Drive (SSD)
In Relational Database Management Systems (RDBMS), what property ensures that all operations within a database transaction either complete successfully or roll back completely?
AAtomicity
BConsistency
CIsolation
DDurability
What is the small, high-speed memory located inside or near the CPU that bridges the speed gap between the CPU and RAM?
AVirtual Memory
BCache Memory
CFlash Memory
DAuxiliary Memory
Which SQL command is used to remove a table structure and all of its records permanently from a database schema?
ADELETE
BTRUNCATE
CDROP
DREMOVE
Which system bus carries physical memory addresses from the processor to RAM or I/O devices?
AData Bus
BControl Bus
CAddress Bus
DExpansion Bus
Which Normal Form eliminates partial dependency by ensuring that all non-key attributes are fully functionally dependent on the entire primary key?
AFirst Normal Form (1NF)
BSecond Normal Form (2NF)
CThird Normal Form (3NF)
DBoyce-Codd Normal Form (BCNF)
What non-volatile firmware program stored on a ROM chip initializes hardware components during the booting process?
AOperating System
BBIOS / UEFI
CDevice Driver
DAssembler