Bfl Placement Papers

26.Which of the following sorting algorithem has average sorting behavior --
Bubble sort,merge sort,heap sort,exchange sort

Ans. Heap sort

27.In binary search tree which traversal is used for getting ascending order values--Inorder ,post order,preorder

Ans.Inorder

28.What are device drivers used for

Ans.To provide software for enabling the hardware

29. Irrevalent to unix command ( getty)

30.What is fork command in unix

Ans. System call used to create process

31.What is make command in unix

Ans. Used forcreation of more than one file

32.In unix .profile contains

Ans. Start up program

33.In unix echo is used for ( answer C)

34.In unix 'ls 'stores contents in

Ans.inode block

QUANTITATIVE SECTION

1.In a class composed of x girls and y boys what part of the class is composed of girls

A.y/(x + y)
B.x/xy
C.x/(x + y)
D.y/xy

Ans.C

2.What is the maximum number of half-pint bottles of cream that can be filled with a 4-gallon can of cream(2 pt.=1 qt. and 4 qt.=1 gal)

A.16
B.24
C.30
D.64

Ans.D

3.If the operation,^ is defined by the equation x ^ y = 2x + y,what is the value of a in 2 ^ a = a ^ 3

A.0
B.1
C.-1
D.4

Ans.B

4.A coffee shop blends 2 kinds of coffee,putting in 2 parts of a 33p. a gm. grade to 1 part of a 24p. a gm.If the mixture is changed to 1 part of the 33p. a gm. to 2 parts of the less expensive grade,how much will the shop save in blending 100 gms.

A.Rs.90
B.Rs.1.00
C.Rs.3.00
D.Rs.8.00

Ans.C

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