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MCQOPTIONS
This section includes 1917 Mcqs, each offering curated multiple-choice questions to sharpen your UGC-NET knowledge and support exam preparation. Choose a topic below to get started.
| 1001. |
The redundancy in images stems from : |
| A. | pixel decorrelation |
| B. | pixel correlation |
| C. | pixel quantization |
| D. | image size |
| Answer» C. pixel quantization | |
| 1002. |
Images tend to be very large collection of data. The size of memory required for a 1024 by 1024 image in which the colour of each pixel is represented by a n-bit number, (in an 8 bit machines) is |
| A. | n × 8 MB |
| B. | n / 8 MB |
| C. | (1024 × 1024) / 8 MB |
| D. | 1024 MB |
| Answer» C. (1024 × 1024) / 8 MB | |
| 1003. |
The two color systems – the HSV and HLS are |
| A. | Hue, Saturation, Value and Hue, Lightness, Saturation |
| B. | High, Standard, Value and High, Lightness, Saturation |
| C. | Highly, Saturated, Value and Highly, Lightened, Saturation |
| D. | Highly, Standard, Value and Hue, Lightness, Saturation |
| Answer» B. High, Standard, Value and High, Lightness, Saturation | |
| 1004. |
Beam-penetration and shadow-mask are the two basic techniques for producing color displays with a CRT.Which of the following is not true ?I. The beam-penetration is used with random scan monitors.II. Shadow-mask is used in raster-scan systems.III. Beam-penetration method is better than shadow-mask method.IV. Shadow-mask method is better than beam-penetration method. |
| A. | I and II |
| B. | II and III |
| C. | III only |
| D. | IV only |
| Answer» D. IV only | |
| 1005. |
In 3D Graphics, which of the following statements about perspective and parallel projection is/are true?P: In a perspective projection, the farthest an object is from the centre of projection, the smaller it appears.Q: Parallel projection is equivalent to a perspective projection where the viewer is standing infinitely far away.R: Perspective projections do not preserve straight lines. |
| A. | P and Q only |
| B. | P and R only |
| C. | Q and R only |
| D. | P, Q and R |
| Answer» B. P and R only | |
| 1006. |
Which of the following graphic primitives are considered as the basic building blocks ofcomputer graphics ?(a) Points (b) Lines (c) Polylines (d) Polygons |
| A. | (a) only |
| B. | (a) and (b) |
| C. | (a), (b) and (c) |
| D. | (a), (b), (c) and (d) |
| Answer» C. (a), (b) and (c) | |
| 1007. |
Consider a line AB with A = (0,0) and B = (8, 4). Apply a simple DDA algorithm and compute the first four plots on this line. |
| A. | [(0, 0), (1, 1), (2, 1), (3, 2)] |
| B. | [(0, 0), (1, 1.5), (2, 2), (3, 3)] |
| C. | [(0, 0), (1, 1), (2, 2.5), (3, 3)] |
| D. | [(0, 0), (1, 2), (2, 2), (3, 2)] |
| Answer» B. [(0, 0), (1, 1.5), (2, 2), (3, 3)] | |
| 1008. |
Consider a N-bit plane frame buffer with W-bit wide lookup table with W > N. How many intensity levels are available at a time? |
| A. | 2^N |
| B. | 2^W |
| C. | 2^(N+W) |
| D. | 2^(N–1) |
| Answer» B. 2^W | |
| 1009. |
Which of the following is/are the components of a CRT ?(a) Electron Gun(b) Control Electrode(c) Focusing Electrode(d) Phosphor Coated Screen |
| A. | (a) and (d) |
| B. | (a), (b) and (d) |
| C. | (a), (b), (c) and (d) |
| D. | (a), (c) and (d) |
| Answer» D. (a), (c) and (d) | |
| 1010. |
Halftoning is defined as |
| A. | a technique to obtain increased visual resolution using multiple intensity levels. |
| B. | a technique for using minimum number of intensity levels to obtain increased visual resolution. |
| C. | a technique to obtain increased visual resolution using maximum number of intensity levels. |
| D. | a technique for using appropriate number intensity levels to obtain increased visual resolution. |
| Answer» C. a technique to obtain increased visual resolution using maximum number of intensity levels. | |
| 1011. |
The refresh rate above which a picture stops flickering and fuses into a steady image is called .................. |
| A. | Crucial fusion frequency |
| B. | Current frequency fusion |
| C. | Critical fusion frequency |
| D. | Critically diffused frequency |
| Answer» D. Critically diffused frequency | |
| 1012. |
The number of distinct binary images which can be generated from a given binary image of right M × N are |
| A. | M + N |
| B. | M × N |
| C. | 2^(M + N) |
| D. | 2^(MN) |
| Answer» E. | |
| 1013. |
Consider the Breshenham’s circle generation algorithm for plotting a circle with centre (0,0) and radius ‘r’ units in first quadrant. If the current point is (x1,y1) and decision parameter is pi then what will be the next point (xi+1,yi+1) and updated decision parameter pi+1 for pi ≥ 0 |
| A. | xi+1 = xi + 1 yi+1 = yi pi+1 = pi + 4xi + 6 |
| B. | xi+1 = xi + 1 yi+1 = yi - 1 pi+1 = pi + 4(xi - yi) + 10 |
| C. | xi+1 = xi yi+1 = yi - 1 pi+1 = pi + 4(xi - yi) + 6 |
| D. | xi+1 = xi - 1 yi+1 = yi pi+1 = pi + 4xi + 10 |
| Answer» C. xi+1 = xi yi+1 = yi - 1 pi+1 = pi + 4(xi - yi) + 6 | |
| 1014. |
A raster scan display system with 24 bits per pixel and a screen resolution of 1024x1024 requires a frame buffer size |
| A. | 1 Mega Bytes |
| B. | 3 Mega Bytes |
| C. | 8 Mega Bytes |
| D. | 24 Mega Bytes |
| Answer» C. 8 Mega Bytes | |
| 1015. |
Let R be the rectangular window against which the lines are to be clipped using 2D Sutherland-Cohen line clipping algorithm. The rectangular window has lower left-hand corner at (-5,1) and upper right-hand corner at (3,7). Consider the following three lines for clipping with the given end point co-ordinates:Line AB: A(-6,2) and B(-1,8)Line CD: C(-1,5) and D(4,8)Line EF: E(-2,3) and F(1,2)Which of the following line(s) is/are candidate for clipping? |
| A. | AB |
| B. | CD |
| C. | EF |
| D. | AB and CD |
| Answer» E. | |
| 1016. |
If f(x, y) is a digital image, then x, y and amplitude values of f are |
| A. | Finite |
| B. | Infinite |
| C. | Neither finite nor infinite |
| D. | Neither finite nor infinite |
| Answer» B. Infinite | |
| 1017. |
Which of the following steps is/are not required for analog to digital conversion ?(a) Sensing (b) Conversion (c) Amplification(d) Conditioning (e) Quantization |
| A. | (a) and (b) |
| B. | (c) and (d) |
| C. | (a), (b) and (e) |
| D. | None of the above |
| Answer» E. | |
| 1018. |
A graphic display system has a frame buffer that is 640 pixels wide, 480 pixels high and 1 bit of color depth. If the access time for each pixel on the average is 200 nanoseconds, then the refresh rate of this frame buffer is approximately: |
| A. | 16 frames per second |
| B. | 19 frames per second |
| C. | 21 frames per second |
| D. | 23 frames per second |
| Answer» B. 19 frames per second | |
| 1019. |
The colour of an object is largely determined by its diffuse reflection coefficient. If Kd = (0.8, 0.4, 0), then what shall be the colour of the object, if the light used is blue and magenta ? |
| A. | White and Red |
| B. | Red and Blue |
| C. | Black and White |
| D. | Black and Red |
| Answer» E. | |
| 1020. |
The feasible region represented by the constraints x1–x2=3, x1>=0, x2>=0 of the objective function Max Z=3x1+2x2 is |
| A. | A polygon |
| B. | Unbounded feasible region |
| C. | A point |
| D. | None of these |
| Answer» C. A point | |
| 1021. |
Which of the following statement(s) is/are correct with reference to curve generation?I. Hermite curves are generated using the concepts of interpolation.II. Bezier curves are generated using the concepts of approximation.III. The Bezier curves lies entirely within the convex hull of its control points.IV. The degree of Bezier curve does not depend on the number of control points. |
| A. | I, II and IV only |
| B. | II and III only |
| C. | I and II only |
| D. | I, II and III only |
| Answer» E. | |
| 1022. |
A point P(2, 5) is rotated about a pivot point (1, 2) by 60°. What is the new transformed point P'? |
| A. | (1, 4) |
| B. | (–1, 4) |
| C. | (1, – 4) |
| D. | (– 4, 1) |
| Answer» C. (1, – 4) | |
| 1023. |
Match the following:a. Glass i. Contains liquid crystal and serves as a bonding surface for a conductive coating.b. Conductive coating ii. Acts as a conductor so that a voltage can be applied across the liquid crystal.c. Liquid Crystal iii. A substance which will polarize light when a voltage is applied to it.d. Polarized film iv. A transparent sheet that polarizes light.Codes: a b c d |
| A. | i ii iii iv |
| B. | i iii ii iv |
| C. | iv iii ii i |
| D. | iv ii i iii |
| Answer» B. i iii ii iv | |
| 1024. |
Which of the following is used for the boundary representation of an image object? |
| A. | Quad Tree |
| B. | Projections |
| C. | Run length coding |
| D. | Chain codes |
| Answer» E. | |
| 1025. |
Consider a unit square centred at origin. The coordinates of the square are translated by a factor (1/2, 1) and rotated by an angle of 90 degrees. What shall be the coordinates of the new square ? |
| A. | (-1/2, 0), (-1/2, 1), (-3/2, 1), (-3/2, 0) |
| B. | (-1/2, 0), (1/2, 1), (3/2, 1), (3/2, 0) |
| C. | (-1/2, 0), (1/2, 0), (-3/2, 1), (-3/2, 0) |
| D. | (-1/2, 0), (1/2, 1), (-3/2, 1), (-3/2, 0) |
| Answer» B. (-1/2, 0), (1/2, 1), (3/2, 1), (3/2, 0) | |
| 1026. |
Match the following :a. Cavalier Projection i. The direction of projection is chosen so that there is no foreshortening of lines perpendicular to the xy plane.b. Cabinet Projection ii. The direction of projection is chosen so that lines perpendicular to the xy planes are foreshortened by half their lengths.c. Isometric Projection iii. The direction of projection makes equal angles with all of the principal axis.d. Orthographic Projection iv. Projections are characterized by the fact that the direction of projection is perpendicular to the view plane.code:a b c d |
| A. | i iii iv ii |
| B. | ii iii i iv |
| C. | iv ii iii i |
| D. | i ii iii iv |
| Answer» E. | |
| 1027. |
The Liang-Barsky line clipping algorithm uses the parametric equation of a line from (x1,y1) to (x2,y2) along with its infinite extension which is given as :x = x1 + Dx.uy = y1 + Dy.uWhere Dx = x2 – x1, Dy = y2 – y1, and u is the parameter with 0 ≤ u ≤ 1. A line AB with end points A(–1, 7) and B(11, 1) is to be clipped against a rectangular window with xmin=1, xmax=9, ymin=2, and ymax=8. The lower and upper bound values of the parameter u for the clipped line using Liang-Barsky algorithm is given as: |
| A. | (0, 2/3) |
| B. | (1/6, 5/6) |
| C. | (0, 1/3) |
| D. | (0, 1) |
| Answer» C. (0, 1/3) | |
| 1028. |
In perspective projection (from 3D to 2D), objects behind the centre of projection are projected upside down and backward onto the view-plane. This is known as .............. |
| A. | Topological distortion |
| B. | Vanishing point |
| C. | View confusion |
| D. | Perspective foreshortening |
| Answer» D. Perspective foreshortening | |
| 1029. |
Give the number of principal vanishing point(s) along with their direction for the standard perspective transformation : |
| A. | Only one in the direction K |
| B. | Two in the directions I and J |
| C. | Three in the directions I, J and K |
| D. | Only two in the directions J and K |
| Answer» B. Two in the directions I and J | |
| 1030. |
If 40 black lines interleaved with 40 white lines can be distinguished across one inch, the resolution is |
| A. | 40 line-pairs per inch |
| B. | 80 line-pairs per inch |
| C. | 1600 lines per inch |
| D. | 40 lines per inch |
| Answer» B. 80 line-pairs per inch | |
| 1031. |
Which of the following is/are fundamental method(s) of antialiasing ?(i) Increase of sample rate.(ii) Treating a pixel as a finite area rather than as a point.(iii) Decrease of sample rate. |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | (i) only |
| D. | (ii) only |
| Answer» B. (ii) and (iii) | |
| 1032. |
Given below are certain output primitives and their associated attributes. Match each primitive with its corresponding attributes :List I List - IIa. Line i. Type, Size, Colorb. Fill Area ii. Color, Size, Fontc. Text iii. Style, Color, Patternd. Marker iv.Type, Width, ColorCodes :a b c d |
| A. | i ii iii iv |
| B. | ii i iii iv |
| C. | iv iii ii i |
| D. | iii i iv ii |
| Answer» D. iii i iv ii | |
| 1033. |
Which of the following color models are defined with three primary colors ? |
| A. | RGB and HSV color models |
| B. | CMY and HSV color models |
| C. | HSV and HLS color models |
| D. | RGB and CMY color models |
| Answer» E. | |
| 1034. |
.................. SQL command changes one or more fields in a record. |
| A. | LOOK-UP |
| B. | INSERT |
| C. | MODIFY |
| D. | CHANGE |
| Answer» D. CHANGE | |
| 1035. |
If every non-key attribute is functionally dependent on the primary key, then the relation is in .................... |
| A. | First normal form |
| B. | Second normal form |
| C. | Third normal form |
| D. | Fourth normal form |
| Answer» D. Fourth normal form | |
| 1036. |
Given two relations R1(A, B) and R2(C, D), the result of following querySelect distinct A, B from R1, R2is guaranteed to be same as R1 provided one of the following condition is satisfied. |
| A. | R1 has no duplicates and R2 is empty. |
| B. | R1 has no duplicates and R2 is non - empty. |
| C. | Both R1 and R2 have no duplicates. |
| D. | R2 has no duplicates and R1 is non - empty. |
| Answer» C. Both R1 and R2 have no duplicates. | |
| 1037. |
Match the following with respect to RDBMS:List - I(a) Entity integrity(b) Domain integrity(c) Referential integrity(d) Userdefined integrityList - II(i) enforces some specific business rule that do not fall into entity or domain(ii) Rows can't be deleted which are used by other records(iii) enforces valid entries for a column(iv) No duplicate rows in a tableCode: (a) (b) (c) (d) |
| A. | (iii) (iv) (i) (ii) |
| B. | (iv) (iii) (ii) (i) |
| C. | (iv) (ii) (iii) (i) |
| D. | (ii) (iii) (iv) (i) |
| Answer» C. (iv) (ii) (iii) (i) | |
| 1038. |
Match the following:List-I List-IIa. DDL i. LOCK TABLEb. DML ii. COMMITc. TCL iii. Natural Differenced. BINARY Operation iv. REVOKECodes: a b c d |
| A. | ii i iii iv |
| B. | i ii iv iii |
| C. | iii ii i iv |
| D. | iv i ii iii |
| Answer» E. | |
| 1039. |
Usage of Preemption and Transaction Rollback prevents .................. |
| A. | Unauthorised usage of data file |
| B. | Deadlock situation |
| C. | Data manipulation |
| D. | File pre-emption |
| Answer» C. Data manipulation | |
| 1040. |
How to express that some person keeps animals as pets ? |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 1041. |
Manager's salary details are hidden from the employee. This is called as |
| A. | Conceptual level data hiding |
| B. | Physical level data hiding |
| C. | External level data hiding |
| D. | Local level data hiding |
| Answer» D. Local level data hiding | |
| 1042. |
A clustering index is created when ................ |
| A. | primary key is declared and ordered |
| B. | no key ordered |
| C. | foreign key ordered |
| D. | there is no key and no order |
| Answer» B. no key ordered | |
| 1043. |
Semi-join strategies are techniques for query processing in distributed database system. Which of the following is a semi-join technique? |
| A. | Only the joining attributes are sent from one site to another and then all of the rows are returned. |
| B. | All of the attributes are sent from one site to another and then only the required rows are returned. |
| C. | Only the joining attributes are sent from one site to another and then only the required rows are returned. |
| D. | All of the attributes are sent from one site to another and then only the required rows are returned. |
| Answer» D. All of the attributes are sent from one site to another and then only the required rows are returned. | |
| 1044. |
Consider the following ER diagram. The minimum number of tables required to represent M, N, P, R1, R2 is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 1045. |
Which of the following statements is false ? |
| A. | Any relation with two attributes is in BCNF. |
| B. | A relation in which every key has only one attribute is in 2NF. |
| C. | A prime attribute can be transitively dependent on a key in 3NF relation. |
| D. | A prime attribute can be transitively dependent on a key in BCNF relation. |
| Answer» E. | |
| 1046. |
Consider the following ORACLE relations:One (x, y) = {, , , , , }Two (x, y) = {, , , , , , , }Consider the following two SQL queries SQ1 and SQ2:SQ1 : SELECT * FROM One)EXCEPT(SELECT * FROM Two);SQ2 : SELECT * FROM One)EXCEPT ALL(SELECT * FROM Two);For each of the SQL queries, what is the cardinality (number of rows) of the result obtained when applied to the instances above? |
| A. | 2 and 1 respectively |
| B. | 1 and 2 respectively |
| C. | 2 and 2 respectively |
| D. | 1 and 1 respectively |
| Answer» C. 2 and 2 respectively | |
| 1047. |
Which of the following statements concerning Object-Oriented databases is FALSE? |
| A. | Objects in an object-oriented database contain not only data but also methods for processing the data. |
| B. | Object-oriented databases store computational instructions in the same place as the data. |
| C. | Object-oriented databases are more adapt at handling structures (analytical) data than relational databases. |
| D. | Object-oriented databases store more types of data than relational databases and access that data faster. |
| Answer» D. Object-oriented databases store more types of data than relational databases and access that data faster. | |
| 1048. |
Consider the following relation:Works (emp_name, company_name, salary)Here, emp_name is primary key.Consider the following SQL query:Select emp_nameFrom Works Twhere salary>(select avg (salary)from Works Swhere T.company_name=S. Company_name)The above query is for following: |
| A. | Find the highest paid employee who earns more than the average salary of all employees of his company |
| B. | Find the highest paid employee who earns more than the average salary of all the employees of all the companiesFind the highest paid employee who earns more than the average salary of all the employees of all the companiesFind the highest paid employee who earns more than the average salary of all the employees of all the companies |
| C. | Find all employees who earn more than the average salary of all employees of all the companies |
| D. | Find all employees who earn more than the average salary of all employees of their company |
| Answer» E. | |
| 1049. |
Consider the following statements regarding relational database model:(a) NULL values can be used to opt a tuple out of enforcement of a foreign key.(b) Suppose that table T has only one candidate key. If Q is in 3NF, then it is also in BCNF.(c) The difference between the project operator (P) in relational algebra and the SELECT keyword in SQL is that if the resulting table/set has more than one occurrences of the same tuple, then P will return only one of them, while SQL SELECT will return all.One can determine that: |
| A. | (a) and (b) are true |
| B. | (a) and (c) are true |
| C. | (b) and (c) are true |
| D. | (a), (b) and (c) are true |
| Answer» E. | |
| 1050. |
Suppose database table T1(P, R) currently has tuples {(10, 5), (15, 8), (25, 6)} and table T2 (A, C) currently has {(10, 6), (25, 3), (10, 5)}. Consider the following three relational algebra queries RA1, RA2 and RA3. The number of tuples in the resulting table of RA1, RA2 and RA3 are given by: |
| A. | 2, 4, 2 respectively |
| B. | 2, 3, 2 respectively |
| C. | 3, 3, 1 respectively |
| D. | 3, 4, 1 respectively |
| Answer» E. | |