CSS - PMS - CCE - PCS - General Science
CPU
Which memory is generally faster: CPU cache or main RAM?
A. CPU cache
B. Both are always identical
C. Neither stores data
D. Main RAM
Correct Answer: A
Cache is smaller and faster than main memory and is located closer to CPU execution units.
CSS - PMS - CCE - PCS - General Science
CPU
What is the fetch-decode-execute cycle?
A. A printer maintenance routine
B. The basic sequence used by a processor to retrieve, interpret and carry out instructions
C. A method for browsing websites
D. A network cable test
Correct Answer: B
Processors repeatedly fetch instructions, decode them and execute the specified operations.
CSS - PMS - CCE - PCS - General Science
CPU
What is an instruction set architecture (ISA)?
A. An email protocol
B. A disk formatting method
C. A browser history list
D. The programmer-visible set of instructions and machine-level conventions a CPU supports
Correct Answer: D
The ISA defines machine instructions, registers and related architectural behavior.
CSS - PMS - CCE - PCS - General Science
CPU
What is cache memory in a CPU used for?
A. Storing passwords on paper
B. Permanent archival storage
C. Keeping frequently needed data and instructions close to the processor
D. Displaying graphics only
Correct Answer: C
CPU cache reduces latency relative to accessing main memory.
CSS - PMS - CCE - PCS - General Science
CPU
What is a CPU core?
A. A network port only
B. A keyboard key
C. A hard-drive sector
D. An independent processing unit within a CPU package
Correct Answer: D
Multicore CPUs contain multiple execution cores capable of processing instruction streams.
CSS - PMS - CCE - PCS - General Science
CPU
What is CPU clock speed commonly measured in?
A. Bytes
B. Meters
C. Hertz, often gigahertz
D. Volts only
Correct Answer: C
Clock frequency indicates cycles per second and is usually reported in GHz for modern CPUs.
CSS - PMS - CCE - PCS - General Science
CPU
What are CPU registers?
A. Printer buffers only
B. Very small, very fast storage locations inside the processor
C. Large external backup drives
D. Internet servers
Correct Answer: B
Registers hold operands, addresses and intermediate values close to execution units.
CSS - PMS - CCE - PCS - General Science
CPU
Which CPU component directs instruction execution and coordinates operations?
A. Sound card
B. Control unit
C. Printer
D. SSD
Correct Answer: B
The control unit decodes instructions and orchestrates data movement and execution.
CSS - PMS - CCE - PCS - General Science
CPU
Which CPU component performs arithmetic and logical operations?
A. Monitor
B. ALU
C. RAM
D. Hard disk
Correct Answer: B
The Arithmetic Logic Unit carries out arithmetic and Boolean operations.