Computer Hardware /Software

51.
Which component decodes instructions in CPU? A. ALU
B. Control Unit
C. Cache
D. Register
Answer: B
52.
Which type of cache is integrated inside CPU core? A. L3 Cache
B. L2 Cache
C. L1 Cache
D. External Cache
Answer: C
53.
DMA allows: A. CPU to control all I/O
B. Direct data transfer without CPU intervention
C. Memory to control CPU
D. Cache to control RAM
Answer: B
54.
Which is not a type of ROM? A. PROM
B. EPROM
C. EEPROM
D. DRAM
Answer: D
55.
Which device performs parallel data processing? A. CPU
B. GPU
C. RAM
D. HDD
Answer: B
56.
Which scheduling algorithm minimizes average waiting time? A. FCFS
B. Round Robin
C. SJF
D. Priority
Answer: C
57.
Which OS structure uses layers? A. Monolithic
B. Layered
C. Microkernel
D. Hybrid
Answer: B
58.
Which memory is used in cache? A. DRAM
B. SRAM
C. Flash
D. ROM
Answer: B
59.
Interrupt is used to: A. Stop CPU permanently
B. Increase RAM
C. Signal CPU for attention
D. Reduce speed
Answer: C
60.
Which register holds instruction being executed? A. PC
B. IR
C. MAR
D. MDR
Answer: B
61.
Which is a low-level language? A. C
B. Java
C. Assembly
D. Python
Answer: C
62.
Which converts assembly to machine code? A. Compiler
B. Interpreter
C. Assembler
D. Loader
Answer: C
63.
Which memory uses capacitors? A. SRAM
B. DRAM
C. ROM
D. Cache
Answer: B
64.
Which is non-volatile storage? A. Cache
B. RAM
C. SSD
D. Register
Answer: C
65.
Which protocol is used in OS for process communication? A. TCP
B. IPC
C. HTTP
D. FTP
Answer: B
66.
Which is system call? A. printf()
B. fork()
C. main()
D. scanf()
Answer: B
67.
Which OS handles real-time operations? A. Batch OS
B. Time-sharing OS
C. Real-Time OS
D. Distributed OS
Answer: C
68.
Which storage medium has highest latency? A. Cache
B. RAM
C. SSD
D. HDD
Answer: D
69.
Which unit converts instructions into signals? A. ALU
B. CU
C. RAM
D. HDD
Answer: B
70.
Which is multiprogramming? A. Single program
B. Multiple CPUs
C. Multiple programs in memory
D. Single user
Answer: C
71.
Which is used for virtual machines? A. Hypervisor
B. Compiler
C. Loader
D. Driver
Answer: A
72.
Which is firmware upgrade method? A. Flashing
B. Formatting
C. Partitioning
D. Defragmenting
Answer: A
73.
Which memory hierarchy is correct? A. RAM → Cache → Register
B. Register → Cache → RAM
C. Cache → RAM → Register
D. RAM → Register → Cache
Answer: B
74.
Which device uses magnetic storage? A. SSD
B. HDD
C. USB
D. RAM
Answer: B
75.
Which is not OS function? A. Memory management
B. Process control
C. Compilation
D. File system
Answer: C
76.
Which OS uses kernel space? A. Windows
B. Linux
C. Both
D. None
Answer: C
77.
Which is fastest bus? A. Data Bus
B. Address Bus
C. Control Bus
D. System Bus
Answer: D
78.
Which interrupt is external? A. Timer
B. Keyboard
C. Software
D. Exception
Answer: B
79.
Which memory is closest after register? A. Cache
B. RAM
C. HDD
D. SSD
Answer: A
80.
Which is multitasking OS? A. DOS
B. Linux
C. BIOS
D. Firmware
Answer: B
81.
Which is not input device? A. Mouse
B. Keyboard
C. Scanner
D. Printer
Answer: D
82.
Which is secondary storage? A. Cache
B. RAM
C. HDD
D. Register
Answer: C
83.
Which software links modules? A. Compiler
B. Linker
C. Loader
D. Interpreter
Answer: B
84.
Which manages threads? A. OS
B. CPU
C. RAM
D. BIOS
Answer: A
85.
Which is non-volatile RAM type? A. DRAM
B. SRAM
C. NVRAM
D. Cache
Answer: C
86.
Which unit handles floating operations? A. ALU
B. FPU
C. CU
D. Cache
Answer: B
87.
Which is pipeline technique benefit? A. Reduce latency
B. Increase throughput
C. Reduce memory
D. Increase storage
Answer: B
88.
Which OS is distributed? A. Linux Cluster
B. Windows
C. DOS
D. BIOS
Answer: A
89.
Which is deadlock condition? A. Mutual exclusion
B. Sharing
C. Preemption
D. Independence
Answer: A
90.
Which memory is dynamic? A. SRAM
B. DRAM
C. ROM
D. Cache
Answer: B
91.
Which is hardware virtualization? A. OS
B. Hypervisor
C. Compiler
D. Driver
Answer: B
92.
Which is kernel type? A. Monolithic
B. Distributed
C. Layered
D. All
Answer: D
93.
Which improves disk performance? A. Defragmentation
B. Formatting
C. Partitioning
D. Scanning
Answer: A
94.
Which device is volatile? A. SSD
B. HDD
C. RAM
D. ROM
Answer: C
95.
Which manages hardware interrupts? A. CPU
B. OS
C. BIOS
D. Driver
Answer: B
96.
Which is software interrupt? A. Keyboard
B. Timer
C. System call
D. Power failure
Answer: C
97.
Which manages memory paging? A. CPU
B. OS
C. RAM
D. BIOS
Answer: B
98.
Which is fastest storage in hierarchy? A. Cache
B. Register
C. RAM
D. SSD
Answer: B
99.
Which is logical address? A. Physical
B. Virtual
C. Absolute
D. Direct
Answer: B
100.
Which software controls hardware? A. Application
B. OS
C. Utility
D. Compiler
Answer: B