UGC NET 2020 Paper 2 Computer Science Prev Year Paper (11-Nov-2020) (Shift 2)

Question 1

A Company has a choice of two languages L 1and L 2to develop a software for their client. Number of LOC required to develop an application in L 2, is thrice the LOC in language L 1. Also, software has to be maintained for next 10 years. Various parameters for two languages. are given below to decide which language should be preferred for development.PARAMETERL 1L 2Man-year needed for developmentLOC/1000LOC/1000Development costRs. 70,000Rs. 90,000Cost of Maintenance per yearRs. 1,00,000Rs. 40,000Total cost of project include cost of development and maintenance. What is the LOC for L 1 for which cost of developing the software with both languages must be same ?

Accepted Answer

3000

Answer

2000

Answer

6000

Answer

5000

Question 2

The data node and name node in HADOOP are

Accepted Answer

Worker Node and Master Node respectively

Answer

Master Node and Worker Node respectively

Answer

Both Worker Nodes

Answer

Both Master Nodes

Question 3

Suppose you have a Linux file system where the block size is 2K bytes, a disk address is 32 bits, and an i-node contains the disk addresses of the first 12 direct blocks of file, a single indirect block, and a double indirect block. Approximately, what is the largest file that can be represented by an i-node?

Accepted Answer

513 MBytes

Answer

513 Kbytes

Answer

537 Mbytes

Answer

537 KBytes

Question 4

Match List I with List IIList I(E &ndash; R symbols)List II(Description)(A)(I) Key Attribute Type(B) (II) Weak Entity Type(C) (III) Total Participation of Entity in   a relation(D)(IV) Multivalue Attribute typeChoose the correct answer from the options given below:

Accepted Answer

A - II, B - I, C - IV, D - III

Answer

A - II, B - IV, C - II, D - I

Answer

A - IV, B - I, C - II, D - III

Answer

A - III, B - IV, C - I, D - II

Question 5

Which of the following statements is true ?

Accepted Answer

The union of two context free languages is context free.

Answer

The intersection of two context free languages is context free.

Answer

The complement of a context free language is context free.

Answer

If a language is context free, it can always be accepted by a deterministic pushdown automaton.

UGC NET 2020 Paper 2 Computer Science Prev Year Paper (11-Nov-2020) (Shift 2)

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PARAMETER	L ₁	L ₂
Man-year needed for development	LOC/1000	LOC/1000
Development cost	Rs. 70,000	Rs. 90,000
Cost of Maintenance per year	Rs. 1,00,000	Rs. 40,000

List I (E – R symbols)	List II (Description)
(A)	(I) Key Attribute Type
(B)	(II) Weak Entity Type
(C)	(III) Total Participation of Entity in a relation
(D)	(IV) Multivalue Attribute type