This Paper has 51 answerable questions with 0 answered.
Roll No……………… | |
Time allowed : 3 hours | Maximum marks : 100 |
Total number of questions : 8 | Total number of printed pages : 2 |
PART —A (Answer Question No.1 which is compulsory and any two of the rest from this part.)
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Marks |
1. | (a) | Discuss any two of the following in the context of information systems : | 4each | |
| | (i) | What is ‘black box concept’ ? Describe briefly ‘artificial system’ and ‘cybernetic system’. | | (0) |
| | (ii) | Define ‘management information system’ (MIS). What are the characteristics of MIS? | | (0) |
| | (iii) | Define ‘microprocessor’. In the context of microcomputer, define the terms ‘motherboard’ and ‘port’. | | (0) |
| (b) | Explain briefly any eight of the following : | 1each | |
| | (i) | RAM | | (0) |
| | (ii) | CD–ROM | | (0) |
| | (iii) | TPS | | (0) |
| | (iv) | Bandwidth | | (0) |
| | (v) | LAN and WAN | | (0) |
| | (vi) | Network structure | | (0) |
| | (vii) | Hybrid computer | | (0) |
| | (viii) | ERP | | (0) |
| | (ix) | DVD | | (0) |
| | (x) | Recycle bin. | | (0) |
| (c) | Convert any two of the following from one number system to another number system as indicated against each, and show your working notes : | 2each | |
| | (i) | (312)8=( )10 | | (0) |
| | (ii) | (256.875)10=( )2 | | (0) |
| | (iii) | (25)10=( )16 | | (0) |
| | (iv) | (F14)16=( )2 | | (0) |
2. | Distinguish between any three of the following in the context of information technology : | 5each | |
| (i) | ‘Multiprocessing’ and ‘time–sharing’. | | (0) |
| (ii) | ‘Indexed sequential’ and ‘random’ file organisation methods. | | (0) |
| (iii) | Programming languages ‘C’ and ‘C++’ | | (0) |
| (iv) | ‘Information’ and ‘data’. | | (0) |
3. | (a) | Define ‘hierarchy of information systems’. | 3 | (0) |
| (b) | Discuss salient features of a ‘non–impact printer’ with examples. | 3 | (0) |
| (c) | Define ‘security’. What are the major concerns of security of computer hardware ? | 3 | (0) |
| (d) | What is the importance of CASE tools ? | 3 | (0) |
| (e) | Discuss the resources of CASE tools. | 3 | (0) |
4. | (a) | Write short notes on any three of the following: | 3each | |
| | (i) | Plotters | | (0) |
| | (ii) | File types in a computer environment | | (0) |
| | (iii) | Flow charts | | (0) |
| | (iv) | HTML. | | (0) |
| (b) | Identify whether the following are programmed or non–programmed decision situations and give reasons in support of your answer. Attempt any three : | 2each | |
| | (i) | Ordering parts of an aircraft assembly line. | | (0) |
| | (ii) | Selecting a site for a new industrial unit. | | (0) |
| | (iii) | Assigning job to personnel of production department at shop floor. | | (0) |
| | (iv) | Decision for continuing the production of a product at a particular plant. | | (0) |
PART —B (Answer Question No.5 which is compulsory and any two of the rest from this part.)
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5. | (a) | Discuss any three of the following with suitable examples : | 3each | |
| | (i) | Statistics is a method of decision–making in the face of uncertainty. | | (0) |
| | (ii) | Dispersion is used in two senses. | | (0) |
| | (iii) | Methods used for measurement of trend. | | (0) |
| | (iv) | Assumption of linear programming technique. | | (0) |
| | (v) | Law of statistical regularity. | | (0) |
| (b) | State, with reasons, whether the following statements are true or false. Attempt any two: | 3each | |
| | (i) | Index numbers are barometers of economic activities. | | (0) |
| | (ii) | Quartile deviation takes into account the middle 50% of the observations. | | (0) |
| | (iii) | Median is affected by extreme observations. | | (0) |
| (c) | Present the following data relating to percentage of marks obtained by 60 students in the form of frequency table with ten class–intervals of equal width, one class–interval being 40—49 : 41 82 33 75 60 32 57 41 60 57 | 17
44
33
67
32 | 33
57
09
24
72 | 63
49
79
64
53 | 54
34
28
63
92 | 92
73
30
11
88 | 60
54
42
35
62 | 58
63
93
82
55 | 70
36
43
10
60 | 06
52
80
23
33 | 67
32
03
00
40 | | 5 | (0) |
6. | (a) | What are the important characteristics of an ‘average’ ? | 4 | (0) |
| (b) | The pass result of 50 students who took up a Class Test is given below : Marks | Number of Students | 4 5 6 7 8 9
| 8 10 9 6 4 3 |
If the average marks for all the 50 students were 5.16, find out the average marks of the students who failed. | 4 | (0) |
| (c) | The mean and standard deviation of 10 observations are 35 and 2 respectively. Find out the changed mean and standard deviation if: (i) each observation is increased by 4, and (ii) each observation is multiplied by 5. | 2 each | (0) |
| (d) | Why are two regression lines ? When do we use one in preference to the other ? | 3 | (0) |
7. | (a) | Fit a trend line to the following data by using the method of least squares. Calculate the trend values and predict the value for the year 2008: Year Production (Tonnes) | 2003 82 | 2004 94 | 2005 96 | 2006 107 | 2007 100 | | 7 | (0) |
| (b) | Ten competitors in a beauty contest were ranked by three judges in the following orders : First Judge Second Judge Third Judge | 1 3 6 | 6 5 4 | 5 8 9 | 10 4 8 | 3 7 1 | 2 10 2 | 4 2 3 | 9 1 10 | 7 6 5 | 8 9 7 |
Use the method of rank correlation to determine which pair of judges has the nearest approach to common tastes in beauty. | 8 | (0) |
8. | (a) | Solve the following linear programming problem by graphical method: Maximize Z | = | 20x + 30y | Subject to | 3x + 2y≤ 210 2x + 4y≤ 300 y 3x ≤ 65 x, y ≥ 0 | | 7 | (0) |
| (b) | From the following data, construct the Laspeyre’s, Paasche’s and Fisher’s indices of prices : Item | Base Year | Current Year | | p0 | q0 | p1 | q1 | A B C D | 4 8 2 10 | 20 4 10 5 | 10 16 4 20 | 15 5 12 6 | | 8 | (0) |