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.) |

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.) |

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 :
| 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 :
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:
| 7 | (0) | |||||||||||||||||

(b) | Ten competitors in a beauty contest were ranked by three judges in the following orders :
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:
| 7 | (0) | |||||||||||||||||

(b) | From the following data, construct the Laspeyre’s, Paasche’s and Fisher’s indices of prices :
| 8 | (0) |