Computer & IT

note!Answer: C) Execution time
Execution time is the period during which the computer actually processes a job.

note!Answer: B) Multiprogramming
Multiprogramming lets the computer keep several programs in memory and run them concurrently.

note!Answer: B) Memory
Memory-resident software stays in RAM, so features like an appointment calendar can be accessed instantly.

note!Answer: C) 1024 megabytes
One gigabyte equals 1024 megabytes.

note!Answer: B) Power PC
The PowerPC is based on RISC (Reduced Instruction Set Computing) architecture, while the 486 is CISC.

note!Answer: A) Input
Input devices supply data and information to the CPU for processing.

note!Answer: D) 30 or 72
SIMMs are standardised with either 30-pin or 72-pin connectors.

note!Answer: D) Either of the above
Secondary storage only holds data; arithmetic, logic, and fetch operations are all carried out by the CPU.

note!Answer: C) Laser printer
Laser printers use dry toner powder fused onto paper by heat and static charge.

note!Answer: B) RAM
RAM is read-write memory, so data can be read and written; ROM and EPROM are read-only in normal operation.

note!Answer: A) Cache memory
Cache memory is the fastest memory in the hierarchy, located closest to the CPU.

note!Answer: C) 4 byte
One byte is 8 bits, so 32 bits equals 4 bytes.

note!Answer: B) Bug
A bug is an error or fault in a computer program or data.

note!Answer: B) Memory protection
Memory protection is the set of techniques that controls which processes can access or modify particular memory areas.

note!Answer: C) Micro processors
Microprocessors are silicon chips that perform the data processing in a computer.

note!Answer: C) Winchester disk
Winchester disks are sealed, contamination-free hard disks; floppy and flexible disks are removable.

note!Answer: D) All of the above
A computer's basic components include the CPU, memory, and input/output units.

note!Answer: C) Spreadsheet
A spreadsheet recalculates dependent formulas instantly when a number is changed.

note!Answer: B) Registers
Registers are very fast storage locations inside the CPU, including the ALU, used for temporary data.

note!Answer: D) Magnetic bubble memory
Magnetic bubble memory is non-volatile solid-state storage with no moving parts.