61.
The region of feasible solution of a linear
programming problem has a ............... property in geometry, provided the
feasible solution of the problem exists.

(A)
concavity (B) convexity

(C)
quadratic (D) polyhedron

Answer: B

62. Consider
the following statements:

(a) Revised
simplex method requires lesser computations than the simplex method.

(b) Revised
simplex method automatically generates the inverse of the current basis matrix.

(c) Less
number of entries are needed in each table of revised simplex method than usual
simplex method.

Which of
these statements are correct?

(A) (a) and
(b) only (B) (a) and (c)
only

(C) (b) and
(c) only (D) (a), (b) and
(c)

Answer: D

63. The
following transportation problem:

The above
solution of a given transportation problem is

(A) infeasible
solution (B)
optimum solution

(C)
non-optimum solution (D) unbounded
solution

Answer: B

64. Let
R and S be two fuzzy relations defined as:

Then, the
resulting relation, T, which relates elements of universe x to elements of
universe z using max-min composition is given by

Answer: C

65. Compute
the value of adding the following two fuzzy integers:

A =
{(0.3,1), (0.6,2), (1,3), (0.7,4), (0.2,5)}

B =
{(0.5,11), (1,12), (0.5,13)}

Where fuzzy
addition is defined as

Î¼

_{A+B}(z) = max_{x+y=z}(min(Î¼_{A}(x), Î¼_{B}(x)))
Then, f(A+B)
is equal to

(A) {(0.5,12),
(0.6,13), (1,14), (0.7,15), (0.7,16), (1,17), (1,18)}

(B)
{(0.5,12), (0.6,13), (1,14), (1,15), (1,16), (1,17), (1,18)}

(C)
{(0.3,12), (0.5,13), (0.5,14), (1,15), (0.7,16), (0.5,17), (0.2,18)}

(D)
{(0.3,12), (0.5,13), (0.6,14), (1,15), (0.7,16), (0.5,17), (0.2,18)}

Answer: D

66. A
perceptron has input weights W

_{1}= -3.9 and W_{2}= 1.1 with threshold value T = 0.3. What output does it give for the input x_{1}= 1.3 and x_{2}= 2.2?
(A) -2.65 (B) -2.30

(B) 0 (D) 1

Answer: C

67. What
is the function of following UNIX command?

WC –

*l*<a >b&
(A) It runs
the word count program to count the number of lines in its input, a, writing
the result to b, as a foreground process.

(B) It runs
the word count program to count the number of lines in its input, a, writing
the result to b, but does it in the background.

(C) It
counts the errors during the execution of a process, a, and puts the result in
process b.

(D) It
copies the ‘

*l*’ numbers of lines of program from file, a, and stores in file b.
Answer: B

68. Which
of the following statement is not correct with reference to cron daemon in UNIX
O.S?

(A) The cron
daemon is the standard tool for running commands on a pre-determined schedule.

(B) It
starts when the system boots and runs as long as the system is up.

(C) Cron
reads configuration files that contain list of command lines and the times at
which they invoked.

(D) Crontab
for individual users are not stored.

Answer: D

69. In
Unix, files can be protected by assigning each one a 9-bit mode called rights
bits. Now, consider the following two statements:

I. A mode of
641 (octal) means that the owner can read and write the file, other members of
the owner’s group can read it, and users can execute only.

II. A mode
of 100 (octal) allows the owner to execute the file, but prohibits all other
access.

Which of the
following options is correct with reference to above statemenrs?

(A) Only I
is correct (B) Only II is
correct

(C) Both I
and II are correct (D) Both I and II
are incorrect

Answer: C

70. Consider
the statement,

"Either
-2 ≤ x ≤ -1 or 1 ≤ x ≤ 2"

The negation
of this statement is

(A) x<-2
or 2<x or -1<x<1 (B) x<-2 or 2<x

(C) -1<x<1 (D) x ≤ -2 or 2
≤ x or -1<x<1

Answer: A

## 0 Comments