Aspire Faculty ID #19097 · Topic: UGC NET Computer Science Dec 2019 (Paper II) · Just now
UGC NET Computer Science Dec 2019 (Paper II)

Match List-I and List-II:
List-I Term List-II Description
(a) Isolated I/O (i) same set of control signal for I/O and memory communication
(b) Memory mapped I/O (ii) separate instructions for I/O and memory communication
(c) I/O interface (iii) require control signals to be transmitted between the communicating units
(d) Asynchronous data transfer (iv) resolve the difference in central computer and peripherals

Solution

Isolated I/O uses separate instructions for I/O and memory communication.

So, (a) $\rightarrow$ (ii)

Memory mapped I/O uses same set of control signals for I/O and memory communication.

So, (b) $\rightarrow$ (i)

I/O interface resolves the difference between central computer and peripherals.

So, (c) $\rightarrow$ (iv)

Asynchronous data transfer requires control signals to be transmitted between communicating units.

So, (d) $\rightarrow$ (iii)

Hence, correct matching is:

$(a)-(ii),\ (b)-(i),\ (c)-(iv),\ (d)-(iii)$

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