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Computer Organization and Architecture MCQs – Set 9

Computer Organization and Architecture MCQs – Set 9

UGC NET Paper 2 Computer Science AUG 2016 – Computer Organization and Architecture


161. The register that stores the bits required to mask the interrupts is ______.

Computer Organization and Architecture • Interrupt handling • UGC NET Paper 2 Computer Science AUG 2016


162. 8085 microprocessor has ____ bit ALU.

Computer Organization and Architecture • Microprocessor architecture • UGC NET Paper 2 Computer Science AUG 2016


163. The octal number 326.4 equals which decimal and hex?

Computer Organization and Architecture • Number Systems • UGC NET Paper 2 Computer Science AUG 2016


164. Which binary representation is most efficient for arithmetic operations?

Computer Organization and Architecture • Number Systems • UGC NET Paper 2 Computer Science AUG 2016


165. Point P(5,1) is rotated 90° about (2,2). The new P′ is:

Computer Organization and Architecture • 2D Transformations: Rotation • UGC NET Paper 2 Computer Science AUG 2016


166. For a shear in the y-direction relative to xref with factors Shx, Shy: x′=?, y′=?

Computer Organization and Architecture • 2D Transformations: Shearing • UGC NET Paper 2 Computer Science AUG 2016


167. 8085 microprocessor has how many hardware interrupts?

Computer Organization and Architecture • 8085 Architecture • UGC NET Paper 2 Computer Science AUG 2016


168. After 8085 code `MVI A,42H; MVI B,05H; UGC: ADD B; DCR B; JNZ UGC; ADI 25H; HLT`, accumulator holds?

Computer Organization and Architecture • 8085 Assembly • UGC NET Paper 2 Computer Science AUG 2016


169. In 8085, which performs HL = HL + DE?

Computer Organization and Architecture • 8085 Instruction Set • UGC NET Paper 2 Computer Science AUG 2016


170. Addressing mode like register indirect but with offset is?

Computer Organization and Architecture • Addressing Modes • UGC NET Paper 2 Computer Science AUG 2016


171. In ____, writes go to both cache and main memory in parallel.

Computer Organization and Architecture • Cache Write Policies • UGC NET Paper 2 Computer Science AUG 2016


172. Window LL=(−5,1), UR=(3,7). Which segments are Cohen–Sutherland candidates? A:(−6,2)→(−1,8); C:(−1,5)→(4,8); E:(−2,3)→(1,2).

Computer Organization and Architecture • Clipping Algorithms: Cohen–Sutherland • UGC NET Paper 2 Computer Science AUG 2016


173. Which about curve generation is correct? I. Hermite uses interpolation. II. Bézier uses approximation. III. Bézier lies within convex hull. IV. Bézier degree independent of control points.

Computer Organization and Architecture • Curve Generation: Splines & Bézier • UGC NET Paper 2 Computer Science AUG 2016


174. In Bresenham’s circle algorithm for the first octant, if current point (xᵢ,yᵢ) and decision pᵢ ≥ 0, next (xᵢ₊₁,yᵢ₊₁) and pᵢ₊₁ are:

Computer Organization and Architecture • Discrete Structures & Algorithms: Bresenham’s Circle • UGC NET Paper 2 Computer Science AUG 2016


175. The IEEE-754 double-precision format uses how many bits in total?

Computer Organization and Architecture • Floating-Point Representation • UGC NET Paper 2 Computer Science AUG 2016


176. 256-CPU multicomputer as 16×16 grid worst-case message hops = ?

Computer Organization and Architecture • Interconnection Networks • UGC NET Paper 2 Computer Science AUG 2016


177. Register storing all interrupt requests is called?

Computer Organization and Architecture • Interrupt Handling • UGC NET Paper 2 Computer Science AUG 2016


178. Pipelining improves performance by .

Computer Organization and Architecture • Pipelining • UGC NET Paper 2 Computer Science AUG 2016


179. In perspective projection, a segment crossing the viewer’s position maps to an infinite broken line on the image plane. This is called:

Computer Organization and Architecture • Projection: Perspective Distortions • UGC NET Paper 2 Computer Science AUG 2016


180. In a positive-edge-triggered JK flip-flop, if J=K=1 what happens at the rising clock edge?

Computer Organization and Architecture • Sequential Circuits – Flip-Flops • UGC NET Paper 2 Computer Science AUG 2016



Disclaimer for MCQ Quiz
This quiz is for educational purposes only…

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