PPSC Computer Science Full Book test With Answers

PPSC Computer Science Full Book test

Sr. # Questions Answers Choice
1 Which of the following communication modes support two way traffic but in only one direction at a time. Simplex Half duplex Three quarters duplex All of the above
2 The X.25 standard specifies a Technique for start stop data Technique for dial access DTE/DCE interface None
3 Layer one of the OSI model is Physical layer Link layer Transport layer Network layer
4 How many OSI layers are covered in the X-25 standart. Two Three Seven Six
5 The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as. Modulation Demodulation Synchronizing Digitising
6 Which of the following performs modulation and demodulation? Fiber optics Satellite Coaxial cable Modern
7 In OSI network architecture the routing is performed by Network layer Data link layer Transport layer Session layer
8 In OSI network architecture the dialogue control and toke management are responsibility of Session layer Network layer Transport layer None
9 The sweep representation of an object refers to the 2 D representation 3 D representation Both a and b None
10 When two molecules move apart which effect on molecular shapes. Stretching Snapping Contracting All of these
11 Super quadric is a class of object that contain. Data Codes Both a and b None
12 ______ is one of the function that is used to specify a single plane surface. Meta ball model Fill area Reflection None
13 More the control points of a Bezier curve ____ quality of the curve. Higher Lower Bad None
14 The no of control points in a Bezier curve ensures the Jaggies of curve Smoothness of curve Straightness of curve None
15 The shape of a Bezier curve primarily depends upon the Position of control points Distance of control points Position of control panel None
16 The Bezier curve obtained from the four control points is called a Sure Bezier curve Cubic Bezier curve Hectare Bezier curve Rectangle Bezier curve
17 The further the line from the projection plane, ____________ its image on the projection plane. smaller Larger Neither smaller nor larger None
18 The distance of a line from the projection plane determines. Its size on projection plane Its length on projection plane Its width on projection plane Its height on projection plane
19 The object refers to the 3D representation through linear circular or some other representation are called. Quadric surface Sweep representation Torus None
20 Bezier sp line always passes through First and second control point Does not pass from first and second control point Both a and b None
21 Sp line curve can be either Bezier sp line B sp line Both a and b None
22 The perspective projection is more practical because the distant objects appear. Smaller Larger Neither smaller nor larger None
23 The projection that can be viewed as the projection that has a centre of projection at a finite distance from the plane of projection are called. Parallel projection Perspective projection Isometric projection None
24 The orthographic projection that show more than one side of an object are called. Axonometric projection Isometric projection Both a and b None
25 In orthographic projection engineering use. Top view of an object Front view of an object Side view of an object All of these
26 The centre of projection for parallel projectors is at. Zero Infinity One None
27 Projection rays emanate from a. COP Intersect projection plane Both a and b None
28 Parallel projection shows the True image of an object True size of an object True shape of an object All of these
29 By which we can take a view of an object from different directions and different distances. Projection Rotation Translation Galling
30 _________ is a simple object space algorithm that remove's about half of the total polygon in an image as about half of the faces of object are back faces. Wire frame model Constructive solid geometry methods Isometric projection Back face removal
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