UGC NET COMPUTER SC. PAPER 2
1. What is the functionality of recursive foreign key.
A recursive foreign key references its own relation.
2. 5th Normal form is concerned with
Join dependency
3. Which Normal form is considered adequate for normal database design.
3NF
4. Which two files is used during operation of DBMS.
Data dictionary and transaction log
5. Which addressing mode allows relocation without any change over in code.
Indexed addressing
6. Dependency preservation is not guaranteed in
BCNF (Boyce Code Normal Form)
7. Which operator is used to compare a value to a lot of literals values that have been specified.
Like operator
8. A graph in which all nodes are of equal degree.
Regular graph
9. The length of Hamiltonian path in a connected graph is
n-1
10. A graph with one vertex and no edges is
Trivial graph
11. The negation of the statement “4 is even or -5 is negative” is
4 is odd and -5 is note negative.
12. An euler graph is one in which
13. Advantage of synchronous sequential cirtcuits is
Faster operation
14. EPROM contents can be erased by exposing it to
UV rays
15. Data can be changed from special code to temporal code by using
Shift registers
16. For pure ALOHA, maximum channel utilization is
18%
17. What is bit stuffing.
Bit stuffing referes to inserting a ‘0’ in usr stream to differentiate it with a flag.
18. Wireless interconnection to PSTN are also called as
IXCs
19. Predictive modeling in data mining uses
Statistical technique
20. The scope of GIS encompasses two types of data called as
Spatial data and non spatial data
21. What are virtual data warehouse.
Virtual data warehouse provide views of operational databses that are materialized for efficient access.
22. The Microsoft system to verify Activex controls is
Authentic code
23.What is an expert system.
An expert system is an interactive computer based decision tool that uses facts and heuristics to solve difficult decision making problems based on knowledge acquired from an expert.
24. What is a neural network
It is an artificial representation of human brain that tries to simulate its learning process.
25. What is fuzzy logic.
It is a method of mimicking the ability of human reasoning usng some rules to produce an output using interpolation process.
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