Advanced level 2025 Centre regional mock guide Computer Science 1
Advanced level 2025 Centre regional mock guide Computer Science 1
. When the main memory of a computer has
limited data and address lines, the program can
behave as if it has unlimited memory by using
a(an):
[A] SRAM
[B] DRAM
[C] Virtual memory
[D] None of the above
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Q2. The role that least suits device drivers in
operating systems:
[A] Interface computers with specific devices
[B] Controls how the specific device is used
[C] Make sure the device works correctly
[D] Isolate devices from the computer
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Q3. Adding a negative number to a positive
number always reduces the number. So, in two’s
complement arithmetic, the carry bit of the most
significant bits (MSBs):
[A] Is always zero
[B] Is added as the new LSB of the answer
[C] Never causes an overflow
[D] Is added to the MSB of the answer
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Q4. Give the simplified expression of the
Boolean expression (A•B) + (A + C):
[A] (A + C)
[B] (A + B)
[C] (A + C)
[D] (A + B + C)
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Q5. The number 23.25 translated into a
normalized floating-point number, with a 10-bit
mantissa and a 6-bit exponent:
[A] 0101101000 000101
[B] 0110110000 000101
[C] 0101110000 000001
[D] 0000010111 000100
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Q6. Which type of language will be suitable for
programming an expert system:
[A] Procedural
[B] Imperative
[C] Object Oriented
[D] Declarative
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Q7. Location 100 contains 101, location 101
contains 107, and location 102 contains 113.
What are the contents of register R after the
following instruction? (The parentheses indicate
indirect addressing). LOAD R, (100)
[A] 101
[B] 107
[C] 113
[D] 100
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Q8. It knows where to get and store its data,
always in the same place but mostly in reverse
order. It must be a:
[A] 0-address machine
[B] 1-address machine
[C] 2-address machine
[D] 3-address machine
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Q9. Joe wants to discuss with a small number of
persons some issues for which he needs
immediate feedback and long-term storage. He
best uses a:
[A] Conference system
[B] File system
[C] Library system
[D] Video system
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Q10. Management information systems:
[A] Create and share documents that support dayto-day office activities
[B] Process business transactions (e.g., time cards,
payments, orders, etc.)
[C] Capture and reproduce the knowledge of an
expert problem solver
[D] Use transaction data to produce information
needed by managers to run the business
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Q11. A design strategy where components are
put together, and repeatedly so, till a problem is
solved is generally described as:
[A] Top-down
[B] Bottom-up
[C] Modular
[D] Recursive
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Q12. We first try it out on a real computer
before doing the thing, we use it to describe what
we want to do, or really want to use it to predict
the weather. What we do is described most
broadly as:
[A] Simulation and modeling system
[B] Weather and forecasting system
[C] Requirements capture
[D] Preliminary research
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Q13. To deliver some software in time, Peter
deliberately left some errors in place. However,
he did not inform the customer. This is because:
[A] Musa is simply protecting his reputation
[B] Musa delivers on time but identifies all pending
issues
