BFL Placement Papers | BFL Interview Procedure | BFL 
Aptitude Questions | BFL Technical Questions | BFL 
Interview Questions




BFL  PAPER  (COMPUTER AWARENESS TEXT) (45QUESTIONS  ,+1,-
1/4,45MIN)
(ITH IN BRACKETS  ANSWERS)
1.In scanf   h  is used for (short int)
2.process is (program in execution)
3.thread is (detachable unit of executable code)
4.advantage of Win NT over Win 95 (robust &secure)
5.memory managemant in Win95 (paging &segmentation)
6.SQL indicates (all above)
7.polymorphism(function & operator overloading)
8.inheritance is(all properties of existing class are 
derived)
9.FTP(transfer a file  b/w stations with user 
authentification)
10.TCP in transport  layer (connection oriented)
11.gateway is used (to connect incompatible networks)
12.linked list is implemented by (referential structures)
13.multitask win95 (preemptive or  non preemptive   check)
14.functional dependency (  answer  C)
15.semaphore is (synchronization of multiple processes
16.precedence order from high to low (  ( )  ++  /  )
17.preorder of  A*(B+C)/D-G  (*+ABC/-DG)
18.B-tree (failure nodes at same level)
19.dense index (index record appers for every search -key 
in file)
20.answer for one questions (   (*p).value =5  )
21.merge sort  time complexity (  O(n log n)   )
22.program on swaping   (   10,5  )    given values  are 
not changed  
23.routers used   (in network layer )
24.packets are formed ( in network layer )
25.heap  ( priority queue )
26.copy  constructor ( constant reference )
27.while following sorting algorithem has average sorting 
behavior (heap
sort )
28.in binary search tree  which traversal is used for 
getting ascending
order values (inorder )
29.device drivers is used ( tool for a i/o devices)  i am 
not sure 
30. irrevalent  to unix  command ( getty)
31.fork in unix (system call used to create process)
32.make (creation of more than one file )
33.in unix .profile contains ( start up program)
34.in unix  echo is used for ( answer C)
35.in unix  'ls 'stores contents in(  inode block)

BFL Placement Papers | BFL Interview Procedure | BFL 
Aptitude Questions | BFL Technical Questions | BFL 
Interview Questions



REFER  GRE ( 12 TH EDITION)(QUANTITATIVE  20 Q ,+1,-1/4)
QUANTITATIVE :-
MODEL TEST 1. SECTION 3,PAGE 435 :- QUESTIONS(Q )  17 TO 
20,26 29
MODELTEST 1,SECTION 4,PAGE 441:-  Q  26,28,29
MODEL TEST 2,SECTION 3,PAGE 483:- Q 18,19,20,29,30
MODEL TEST 2,SECTION 4,PAGE  489 :- Q 16,30
MODEL TEST 2,SECTION 7,PAGE 501 :- Q 16
     ANALYTICAL ABILITY  ( 20 Q, +1,-1/4)  
QUANTUM+ANALYTICAL 45MIN
1. PAGE 397 Q 7-11( THE OFFICE STAFF OF THE XYZ CORPORATION)
2PAGE 397 Q 14-17 ( AFTER MONTHS OF TALENT SEARCHING FOR AN 
ADMINISTRATIVE
ASSISTANT
3.PAGE 400 Q 29-31(A CERTAIN CITY A  SERVED BY SIX SUBWAY 
LINES)
4.MODEL TEST1,SECTON5,PAGE443,Q13-16(IN A CETTAIN SOCIETY 
THERE ATE TWO
MARRIAGE GROPES RED , BROWN)
5.MODELTEST3,SECTION6,PAGE544,Q 1-4(ALL G'S ARE H'S ,ALL 
G'S ARE J'S OR
K'S)

BFL Placement Papers | BFL Interview Procedure | BFL 
Aptitude Questions | BFL Technical Questions | BFL 
Interview Questions

1/221

p(getting queen)=(13/52)(13/51)
                =0.063

the Probability of 2 Queen cards might be 0,1,2.
so, the equation should be: (52/52)*(51/52)*(50/52)

The echo command echoes its arguments

Another important use of the echo command is to toggle 
echoing of commands on and off in batch files. 

echo on               turns on echoing of commands
echo off              turns off echoing of commands

echo command is particularly use for displaying the 
statement
echo "statement"
OR
echo statement

start up program

system call used to create process

to create  new process

O(n log n)

Right its always (nlog n)in all cases whether its best case
or worst case.

*+ABC/-DG

I thin the answer given about is not correct because...
answer given about will be the solution if Question is 
given as follow..

A*(B+C)/(D-G)


answer must be..
-/*A+BCDG

synchronization of multiple processes

variable used for synchronization of multiple processes

"A semaphore restricts the number of simultaneous users of 
a shared resource up to a maximum number. Threads can 
request access to the resource (decrementing the 
semaphore), and can signal that they have finished using 
the resource (incrementing the semaphore)."

referential structures

transfer a file  b/w stations with user authentification

FTP stands for File Trasfer Protocol with is used to 
transfer file/folder with proper authentication.

File trasfer Protocol,it trasfer the protocols.
protocol is set rules.

File Trasfer Protocol is used to transfer data from one 
computer to another over the Internet, or through a network.
port number 21.





nagesh.p

yes Nageshind you are 100% right 

ok tell me about TFTP with port number??

FTP-File Transfer Protocol
port no 21
it is used to upload and download the files in the internet.
[through n/w].

Hi I m Vijay

TFTP is a form of FTP called Trivail File Transfer Protocal 
and uses UDP port 69.

It is a feature that allows one interface to be used for 
general class of actions. The specific action is determined 
by the exact nature of the situation. In general 
polymorphism means "one interface, multiple methods", This 
means that it is possible to design a generic interface to 
a group of related activities. This helps reduce complexity 
by allowing the same interface to be used to specify a 
general class of action. It is the compiler's job to select 
the specific action (that is, method) as it applies to each 
situation

The above answer is well explained. In technical terms it
can be explained as same function name with different
signature. Signature means only interms of arguments, and
not for return types. The idea is very simple and is a
feature which make the end user comfortable, and as  Swetcha
said, it is finally the compiler will decide, which function
to call when, according to the type of data passed to the
function. 
eg. int add(int, int)
    double add(double, double)
    char add(char, char)

but the following is not possible
int add(int, int)
char add(int, int)

paging,segmentation

Win 95 is Desktop OS and WIN NT is the server OS
Win NT can me made as doamin controller where win 95 can't

detachable unit of executable code

When a process is excecuting,it will be divided into sub 
tasks.Each sub task is known as a thread.
Simply thread is a light weight process...

A thread is a single sequence stream within a process. 
Threads are a way for a program to split itself into two or 
more simultaneously running tasks.

A 'process' is an execution stream in the context of a 
particular process state. 
An execution stream is a sequence of instructions. 
Process state determines the effect of the instructions. It 
usually includes (but is not restricted to): 
Registers 
Stack 
Memory (global variables and dynamically allocated memory) 
Open file tables 
Signal management information 
*Key concept: processes are separated: no process can 
directly affect the state of another process. 
->Process is a key OS abstraction that users see - the 
environment you interact with when you use a computer is 
built up out of processes. 
The shell you type stuff into is a process. 
When you execute a program you have just compiled, the OS 
generates a process to run the program. 
 even Your WWW browser is a process.