IBM Paper3 technical

Q). PS1 pwd
export PS1 results in
a). your primary prompt being your current directory
b). " " and secondary prompts being the current dir
c). " " prompt being your home dir
d). " " and secondary prompts being the home dir
e). None of the above.

Q). If you type in the command
nohup sort employees > list 2 > error out &
and log off ,the next time you log in . the output
will be
a). in a file called list and the error will de typed in
a file error out
b). there will be no file called list or error out
c). error will be logged in a file called list and o/p
d). you will not be allowed to log in
e). none of the above

Q). In UNIX a files i-node
a)is a data structure that defines all specifications
of a file like the file size ,number of lines to a
file ,permissions etc.
b).----
c). - - - --
d). _ _ _
( ans is ---------(a) )

Q). The UNIX shell is..
a).does not come with the rest of the system
b).forms the interface between the user and the kernal
c) does not give any scope for programming
d) deos not allow calling one program from with in another
e) all of the above
(ans is (b) )

Q).enum number { a=-1, b= 4,c,d,e}
what is the value of e ?

7,4,5,15,3
(ans is 7 ) check again
Q).The very first process created by the kernal that runs
till the kernal process is haltes is
a)init
b)getty
c)
d)
e)none
(Ans is a)

Q) Result of the following program is
main()
{
int i=0;
for(i=0;i<20;i++)
{
switch(i)
case 0:i+=5;
case 1:i+=2;
case 5:i+=5;
default i+=4;
break;}
printf("%d,",i);
}
}
a)0,5,9,13,17
b)5,9,13,17
c)12,17,22
d)16,21
e)syntax error
(Ans is d )

Q) What is the result
main()
{
char c=-64;
int i=-32
unsigned int u =-16;
if(c>i){
printf("pass1,");
if(c
printf("pass2");
else
printf("Fail2");}
else
printf("Fail1);
if(i
printf("pass2");
else
printf("Fail2")
}
a)Pass1,Pass2
b)Pass1,Fail2
c)Fail1,Pass2
d)Fail1,Fail2
e)none
(Ans is c)

Q) In the process table entry for the kernel process, the process id value is
a) 0 b) 1 c) 2 d) 255 e) it does not have a process table entry
Ans) a

Q) Which of the following API is used to hide a window
a) ShowWindow
b) EnableWindow
c) MoveWindow
d) SetWindowPlacement
e)None of the above
Ans) a

Q) what will the following program do?
void main()

{
int i;
char a[]="String";
char *p="New Sring";
char *Temp;
Temp=a;
a=malloc(strlen(p) + 1);
strcpy(a,p); //Line no:9//
p = malloc(strlen(Temp) + 1);
strcpy(p,Temp);
printf("(%s, %s)",a,p);
free(p);
free(a);
} //Line no 15//
a) Swap contents of p & a and print:(New string, string)
b) Generate compilation error in line number 8
c) Generate compilation error in line number 5
d) Generate compilation error in line number 7
e) Generate compilation error in line number 1
Ans) b

Q) In the following code segment what will be the result of the function,
value of x , value of y

{
unsigned int x=-1;
int y;
y = ~0;
if(x == y)
printf("same");
else
printf("not same");
}

a) same, MAXINT, -1
b) not same, MAXINT, -MAXINT
c) same , MAXUNIT, -1
d) same, MAXUNIT, MAXUNIT
e) not same, MAXINT, MAXUNIT
Ans) a

Q) PATH = /bin : /usr : /yourhome
The file /bin/calender has the following line in it
cal 10 1997
The file /yourhome/calender has the following line in it
cal 5 1997
If the current directory is /yourhome and calender is executed

a) The calendar for May 1997 will be printed on screen
b) The calendar for Oct 1997 will be printed on screen
c) The calendar for the current month( whatever it is) will be printed
d) Nothing will get printed on screen
e) An error massage will be printed

Q) what will be the result of the following program ?
char *gxxx()
{
static char xxx[1024];
return xxx;
}
main()
{
char *g="string";
strcpy(gxxx(),g);
g = gxxx();
strcpy(g,"oldstring");
printf("The string is : %s",gxxx());

} a) The string is : string
b) The string is :Oldstring
c) Run time error/Core dump
d) Syntax error during compilation
e) None of these
Ans) b

Q) What will be result of the following program?
void myalloc(char *x, int n)

{ x= (char *)malloc(n*sizeof(char));
memset(x,\0,n*sizeof(char));

} main()
{ char *g="String";
myalloc(g,20);
strcpy(g,"Oldstring");
printf("The string is %s",g);

} a) The string is : String
b) Run time error/Core dump
c) The string is : Oldstring
d) Syntax error during compilation
e) None of these
Ans) c ( check it )

Q) which of the following function is used to repaint a window immediately
a) Sendmessage(hWnd,WM_PAINt,..)
b) InvalidateRect(..)
c) MoveWindow
d) WM_COPY
e) None

Q) which function is the entry point for a DLL in MS Windows 3.1
a) main
b) Winmain
c) Dllmain
d) Libmain
e) None

Ans) b

Q) The standard source for standard input, standard output and standard error is
a) the terminal
b) /dev/null
c) /usr/you/input, /usr/you/output/, /usr/you/error respectively
d) NOne
Ans) a

Q) What will be the result of the following program?
main()
{
char p[]="String";
int x=0;
if(p=="String")
{
printf("Pass 1");
if(p[sizeof(p)-2]=='g')
printf("Pass 2");
else
printf("Fail 2");
}
else
{
printf("Fail 1");
if(p[sizeof(p)-2]=='g')
printf("Pass 2");
else
printf("Fail 2");
}
}

a) Pass 1, Pass 2
b) Fail 1, Fail 2
c) Pass 1, Fail 2
d) Fail 1, Pass 2
e) syntax error during compilation

Q) Which of the choices is true for the mentioned declaration ?
const char *p;
and
char * const p;
a) You can't change the character in both
b) First : You can't change the characterr &
Second : You can;t change the pointer
c) You can't change the pointer in both
d) First : You can't change the pointer &
Second : You can't chanage the character
e) None
Ans) b ( check it)

Q) The redirection operators > and >>

a) do the same function
b) differ : > overwrites, while >> appends
c) differ : > is used for input while >> is used for output
d) differ : > write to any file while >> write only to standard output
e) None of these
Ans) b

Q) The command
grep first second third /usr/you/myfile

a) prints lines containing the words first, second or third from the file /usr/you/myfile
b) searches for lines containing the pattern first in the files
second, third, and /usr/you/myfile and prints them
c) searches the files /usr/you/myfiel and third for lines containing
the words first or second and prints them
d) replaces the word first with the word second in the files third and /usr/you/myfile
e) None of the above
Ans) b