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1

UGCNET-Dec2007-II: 1
A box contains six red balls and four green balls. Four balls are selected at random from the box. What is the probability that two of the selected balls are red and two are green ? $\large\frac{3}{7}$ $\large\frac{4}{7}$ $\large\frac{5}{7}$ $\large\frac{6}{7}$

asked 1 day ago in Probability by jothee Veteran (106k points) | 16 views

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2

UGCNET-Dec2007-II: 2
The number of edges in a complete graph with ‘n’ vertices is equal to : $n(n-1)$ $\large\frac{n(n-1)}{2}$ $n^2$ $2n-1$

asked 1 day ago in Graph Theory by jothee Veteran (106k points) | 10 views

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3

UGCNET-Dec2007-II: 3
A context free grammar is : type $0$. type $1$. type $2$. type $3$.

asked 1 day ago in Theory of Computation by jothee Veteran (106k points) | 5 views

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4

UGCNET-Dec2007-II: 4
Let e : B^m → B^n is a group code. The minimum distance of ‘e’ is equal to : the maximum weight of a non zero code word. the minimum weight of a non zero code word. m n

asked 1 day ago in Computer Networks by jothee Veteran (106k points) | 8 views

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5

UGCNET-Dec2007-II: 5
Consider a Moore machine M whose digraph is : Then L(M), the language accepted by the machine M, is the set of all strings having : two or more b’s. three or more b’s. two or more a’s. three or more a’s.

asked 1 day ago in Theory of Computation by jothee Veteran (106k points) | 4 views

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6

UGCNET-Dec2007-II: 6
A WFF that is equivalent to the WFF x=> y is : y=>x ~y=>x ~y=> ~x y=> ~x

asked 1 day ago in Others by jothee Veteran (106k points) | 3 views

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7

UGCNET-Dec2007-II: 7
Simplified form of Boolean expression xy+(~x)z+yz is : xy+(~x)z. (~x)y+(~x)z. (~x)y+xz. xy+xz.

asked 1 day ago in Digital Logic by jothee Veteran (106k points) | 5 views

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8

UGCNET-Dec2007-II: 8
In order to build a MOD - $18$ counter,the minimum number of flip flops needed is equal to : $18$ $9$ $5$ $4$

asked 1 day ago in Digital Logic by jothee Veteran (106k points) | 5 views

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9

UGCNET-Dec2007-II: 9
The dual of the switching function $F=x+yz$ is given by : $\text{x+yz}$ $\text{x(y+z)}$ $\text{(~x)+(~y)(~z)}$ $\text{(~x)((~y)+(~z))}$

asked 1 day ago in Others by jothee Veteran (106k points) | 5 views

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10

UGCNET-Dec2007-II: 10
Amongst the logic families DTL, TTL, ECL and CMOS, the family with the least power dissipation is : CMOS DTL TTL ECL

asked 1 day ago in Others by jothee Veteran (106k points) | 7 views

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11

UGCNET-Dec2007-II: 11
What cannot replace ? in the following C-code to print all odd numbers less than $100$ ? for (i=1; ? ; i=i+2) printf("%d\n", i); $i\leq100$ $i\leq101$ $i<100$ $i<101$

asked 1 day ago in Programming by jothee Veteran (106k points) | 5 views

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12

UGCNET-Dec2007-II: 12
Consider the following linked list : Which of the following piece of code will insert the node pointed to by q at the end of the list ? $\text{for (p=list; p !=NULL; p=p → next);}\\ p=q;$ $\text{for (p=list; p !=NULL; p=p → next);}\\ \text{p→next=q;}$ $\text{for (p=list; p→next !=NULL; p=p → next);}\\ p=q;$ $\text{for (p=list; p→next !=NULL; p=p → next);}\\ p→next=q;$

asked 1 day ago in DS by jothee Veteran (106k points) | 5 views

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13

UGCNET-Dec2007-II: 13
Which of the following is a valid C code to print character A' to C' ? x='A' ; switch(x) {case 'A'= printf ( "%d\n" , x); .... case 'C'= printf ( "%d\n" , x); } x='A'; switch(x) {case 'A' <= x <= 'C' : printf ( "%d ... case 'A' =printf ( "%d\n" , x); case 'B' =printf ( "%d\n" , x); case 'C' =printf ( "%d\n" , x); }

asked 1 day ago in Programming by jothee Veteran (106k points) | 5 views

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14

UGCNET-Dec2007-II: 14
Which of the following is not true in C++ ? Private elements of a base class are not accessible by members of its derived class. Protected elements of base class are not accessible by members of its derived class. When base class access ... . When base class access specified is Public , protected elements of a base class become protected members of its derived class.

asked 1 day ago in Object Oriented Programming by jothee Veteran (106k points) | 5 views

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15

UGCNET-Dec2007-II: 15
Which of the following is true of constructor function in C++ ? A class must have at least one constructor. A constructor is a unique function which cannot be overloaded. A constructor function must be invoked with the object name. A constructor function is automatically invoked when an object is created.

asked 1 day ago in Object Oriented Programming by jothee Veteran (106k points) | 4 views

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16

UGCNET-Dec2007-II: 16
A primary key for an entity is : a candidate key. any attribute. a unique attribute. a superkey.

asked 1 day ago in Databases by jothee Veteran (106k points) | 6 views

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1 answer

17

UGCNET-Dec2007-II: 17
Aggregate functions in SQL are : GREATEST, LEAST and ABS. SUM, COUNT and AVG. UPPER, LOWER and LENGTH. SQRT, POWER and MOD.

asked 1 day ago in Databases by jothee Veteran (106k points) | 5 views

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18

UGCNET-Dec2007-II: 18
If a relation is in 2NF and 3NF forms then : no non-prime attribute is functionally dependent on other non-prime attributes. no non-prime attribute is functionally dependent on prime attributes. all attributes are functionally independent. prime attribute is functionally independent of all non-prime attributes.

asked 1 day ago in Others by jothee Veteran (106k points) | 4 views

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19

UGCNET-Dec2007-II: 19
The end of an SQL command is denoted by : an end-of-line character. an ‘enter-key’ marker. entering F4 key. a semicolon (;)

asked 1 day ago in Databases by jothee Veteran (106k points) | 3 views

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20

UGCNET-Dec2007-II: 20
Consider the query : SELECT student_name FROM students WHERE class_name=(SELECT class_name FROM students WHERE math_marks=100); what will be the output ? the list of names of students with $100$ marks in mathematics. the names of all students of all classes ... classes having $100$ marks in mathematics. the names and class of all students whose marks in mathematics is $100$.

asked 1 day ago in Databases by jothee Veteran (106k points) | 8 views

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21

UGCNET-Dec2007-II: 21
Consider a rooted tree in which every node has at least three children. What is the minimum number of nodes at level i (i > $0$) of the tree ? Assume that the root is at level $0$: $3^i$ $3i$ $3$ $3i+1$

asked 1 day ago in DS by jothee Veteran (106k points) | 3 views

0 votes

1 answer

22

UGCNET-Dec2007-II: 22
Which of the following data structure is used to implement recursion ? Arrays. Stacks. Queues. Linked lists.

asked 1 day ago in DS by jothee Veteran (106k points) | 7 views

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23

UGCNET-Dec2007-II: 23
The height of a binary tree with n nodes, in the worst case is : $O(log n)$ $O(n)$ $\Omega(n\log n)$ $\Omega(n^2)$

asked 1 day ago in DS by jothee Veteran (106k points) | 5 views

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24

UGCNET-Dec2007-II: 24
An example of a file extension is : text pict mp$3$ web

asked 1 day ago in Others by jothee Veteran (106k points) | 3 views

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25

UGCNET-Dec2007-II: 25
The performance of a file system depends upon the cache hit rate. If it takes $1$ msec to satisfy a request from the cache but $10$ msec to satisfy a request if a disk read is needed, then the mean time (ms) required for a hit rate h is given by : $1$ $h+10(1-h)$ $(1-h)+10h$ $10$

asked 1 day ago in Operating System by jothee Veteran (106k points) | 3 views

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26

UGCNET-Dec2007-II: 26
The best known example of a MAN is : Ethernet. Cable Television. FDDI. IEEE $802.3$.

asked 1 day ago in Computer Networks by jothee Veteran (106k points) | 3 views

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27

UGCNET-Dec2007-II: 27
In a broadcast network, a layer that is often thin or non-existent is : network layer. transport layer. presentation layer. application layer.

asked 1 day ago in Computer Networks by jothee Veteran (106k points) | 4 views

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28

UGCNET-Dec2007-II: 28
The maximum data rate of binary signals on a noiseless $3\:KHz$ channel is : $3000$ bps. $6000$ bps. $9000$ bps. $12,000$ bps.

asked 1 day ago in Computer Networks by jothee Veteran (106k points) | 3 views

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29

UGCNET-Dec2007-II: 29
For pure ALOHA, the maximum channel utilization is : $100\%$ $50\%$ $36\%$ $18\%$

asked 1 day ago in Computer Networks by jothee Veteran (106k points) | 4 views

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0 answers

30

UGCNET-Dec2007-II: 30
An example of an adaptive routing algorithm is : distance vector routing. flooding. selective flooding. shortest path routing.

asked 1 day ago in Computer Networks by jothee Veteran (106k points) | 3 views

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