UGC Net Computer Science December 13 Paper 3 Page 3 Solved

UGC Net Computer Science December 13 Paper 3 Page 3 Solved

21. Given the following statements :

S1 : The grammars S → asb | bsa |

        ss | a and S → asb | bsa | a are not equivalent.

S2 : The grammars S → ss | sss |

        asb | bsa | λ and S → ss | asb | bsa | λ are equivalent.

Which of the following is true ?

(A) S1 is correct and S2 is not correct.

(B) Both S1 and S2 are correct.

(C) S1 is not correct and S2 is correct.

(D) Both S1 and S2 are not correct.

Answer B
Explanation :-

Library Management Project

Girfa Library Management is window based software written in VB.Net. This software covers all working aspect of a library. You can use this software at any school, college or any book shop that run their own paid library. Due to flexible of this software, which achieve all the activity of library Management task in an efficient way. The simplicity of the software need little bit training for execution. Power of software is wide range of report generation which makes audit work easy. Various types of setting option in option menu like book issue day, fine amount and many more makes this software dynamic.

Polymorphism

“One name many form.”

Polymorphism gives the ability to dynamic programming to a language which reduces to write repeated code for each module. You can use polymorphism for flexible programming for example if you‘re making software for a school and you need to print record of different type person which may be student, teacher, non teaching staff etc. So without using polymorphism you need to make separate function for each person related record printing. which lead to increase complexity. In polymorphism you need to make a function for printing record and rewrite different version of this as printing which are isolated by function signature. So you have a better approach to solve your need with flexible coding.

UGC Net Computer Science December 13 Paper 3 Page 2 Solved

UGC Net Computer Science December 13 Paper 3 Page 2 Solved

11. Match the following style rules for reusability :

              List – I                                                              List – II

a. Keep methods coherent                                       i. Write a method to get the last element of a list

b. Keep methods small                                            ii. Maintain parallel structure when possible

c. Keep methods consistent                                   iii. Breaking a method into smaller parts

d. Provide uniform coverage                                 iv. Performs a single function or a group

                                                                                     of closely related  functions.