WB JECA MCA Computer Architecture Previous Year Questions (PYQs)
A Place for Latest Exam wise Questions, Videos, Previous Year Papers,
Study Stuff for MCA Examinations
Study Stuff for MCA Examinations
In DMA transfers, the required signals and addresses are given by the ____.
1
2
3
4
Solution
Solution: In Direct Memory Access (DMA), the DMA controller takes over bus control to put
addresses/control signals on the bus, freeing the CPU.
Answer: (C) DMA controllers
Answer: (C) DMA controllers
If there are 32 segments each of size 1K bytes, then the logical address should have
1
2
3
4
Solution
Solution: 32 segments ⇒ segment bits = $\log_2 32 = 5$. Size = 1 KB ⇒ offset bits = $\log_2 1024 = 10$.
Total address bits $= 5 + 10 = \boxed{15}$.
Answer: (D) 15 bits
Total address bits $= 5 + 10 = \boxed{15}$.
Answer: (D) 15 bits
__________ interrupt may happen due to power failure.
1
2
3
4
Solution
Power failure ⇒ Hardware interrupt.
11. Address of the next instruction to be executed is specified by ______________.
(A) MBR (B) MAR (C) PSW (D) PC
1
2
3
4
Solution
Explanation: The Program Counter (PC) holds the address of the next instruction to be fetched and executed.
12. Auxiliary memory is also known as ______________ memory.
(A) Primary (B) Secondary (C) Binary (D) Quad
1
2
3
4
Solution
Explanation: Auxiliary storage refers to secondary memory (e.g., HDD, SSD, tapes) used for non-volatile, large-capacity storage.
WB JECA MCA
Online Test Series, Information About Examination,
Syllabus, Notification
and More.
View More
WB JECA MCA
Online Test Series, Information About Examination,
Syllabus, Notification
and More.
View More
Ask Your Question or Put Your Review.
