UGC NET COMPUTER SCIENCE SOLVED MODEL PAPER FOR JUNE 2014

UGC NET COMPUTER SCIENCE SOLVED MODEL PAPER FOR JUNE 2014

1. What is the difference between normalized data and denormalised data.

Normalised data means it has many tables and few columns per table.

Denormalised data means it has few tables, many columns per table.

2. Analysis of large database to retrieve information is called as

OLAP (On-Line Analytical Processing).

3. What is meant by deferred update.

It is the process in which all the log files entries are made first but the actual updates are done later.

4. What is a recursive foreign key.

It is a key which references its own relation.

5. The data stored in the database which is accurate and consistent is called as

Data Integrity

6. The number of spanning trees that can be drawn using five labeled vertices is

125.

Explanation: Formula = n^n-2

n=5

5^5-2=>5^3

5^3=125

7. Formulas to calculate complete graph and connected graph.

Complete graph=n(n-1)/2

Connected graph=n-1

8. What is the difference between probabilistic logic, temporal logic, epistemic logic

Probabilistic logic: Reasoning about probability

Temporal logic: Reasoning about time

Epistemic logic: Reasoning about knowledge.

9. Line clipping algorithms are used to

Decide spatial relationship between line and clipping window

Find intersection points

10. Synthesis Phase of the compiler does

Intermediate Code Generation

Code Optimization

Code Generation

11. Single stage network is also called as

Recirculating network.

12. Congestion control is done by

Network layer

13. Bridges operate in

Both physical and data link layers of OSI model.

Bridges help to divide a large network in to small segments.

14. What is a Parallel virtual machine(PVM).

A Parallel virtual machine is a message passing mechanism that enables us to create a

Virtual parallel computer using a network of workstations.

A PVM has the capacity to connect heterogeneous(different) machines.

It uses simple c and fortran functions.

Easily installable and configurable.

15. What are the benefits of EDI (Electronic Data Interchange).

Faster speed

Accuracy

Secure

Simple

16. What is a context.

It is a label that identifies phase of execution.

17. What is the use of virtual data warehouses.

They provide views of operational databases that are materialized for efficient access.

18. Activex controls are Pentium binary programmes that can be embed in

Web pages.

19. What are the four famous Artificial Intelligence (AI) approaches.

Cognitive Science: Think Human-Like

Laws of thought: Think rationally

Turing test: Act Human-Like

Rational agent: Act Rationally

20. Famous AI search algorithms.

Generate and Test search

Best first search

Greedy search

A* search

Constraint search

Means ends analysis

Prepare consistently and achieve success surely.

All the best,

With regards,

NETCOMPUTERSCIENCE.IN