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Sun Microsystems

SUN MICROSYSTEMS PAPER - DEC 2005
60 questions 60 marks
Everything is multiple choice. BEWARE OF NEGATIVE MARKING .
Section 1 : Operating Systems 20 questions
Section 2 : Technical Programming 25 questions
Section 3 : Aptitude 15 Questions
Section 1 : Operating Systems
Study all the unix commands & some basic networking concepts like DHCP, Dynamic NAT, RARP, ARP, UDP, DNS. Unix : Grep, sed, basic perl program whose o/p is to be predicted. Pipes. You can expect some nasty & tricky questions !. But this section is kool not to worry too much.
Section 2 : Programming part
C programs & Java programs. The programs seems to be easy but bcoz of the Negative marking (0.5) we have to be very clear. No bluffing ok! The programs are easy. Programs were on Fork, PID, Basic C syntax, Basics of Java, Exception handling, Inheritance, Strings, Cast conversion, Object linking etc
Section 3 : Aptitude
Most of the questions can be found from other placement papers like Sonata, TCS, Caritor. Nothing to worry much. But again you have to be very confident about the answers.
The cut-off marks are not told & will be decided by the evaluators at that time. Only 3 out of some 50 candidates got through. The next rounds are technical interview followed by HR interview. This interview call was purely on referral basics. So not much competitors & really a good chance of getting thru !. Do well & good luck !
Questions:
# main()
{
int _=10;
printf("%d",_);
}
# If you have developed an microprocessor by name JUGGI, how would you account for the JVM ?
a) Write/ Develop a new JVM by going through the SUN standards
b) Implement the same JVM that's in windows , linux as JVM is platform independent.
c) Leave it to the SUN to write it for you
d) Need not write anything
# Which server would you use to configure or set up a new IP address in Linux
a) DNS b) DHCP c) TCP d) blah blah blah .....
# Three friends divided some bullets equally. After all of them
shot 4 bullets the total no.of remaining bullets is equal to that of
one has after division. Find the original number divided. [Infosys paper & IBM]
a) 20 b) 22 c) 18 d) 19
# A cube object 3" * 3" * 3" is painted with green in all the outer surfaces. If the cube is cut into cubes of 1"*1"*1", how many 1" cubes will have at least one surface painted. [Caritor]
a) 8 b) 26 c) 27 d) None of the above
# What is the protocol used for getting the physical address by supplying
IP address of a node ? [Wipro]
[i] ARP [ii] RARP [iii] BOOTP [iv] DHCP
# How can a process be started automatically in UNIX ? [MBT]
a) CRONTAB b) INITTAB c) CONTROL d) FORK
# Flow chart problem [Satyam]
let the value of N be 10
divide N by 10 to give quotient (Q) remainder(R)
diff=R-Q
if diff=1 then 6
go to step 7
display the value of N
add 1 to N
if N <100>
a) 11,12,13,,14.. b)12,23,34,..... c)21,32,4,354...... d) none
# What is the output of the Program? [Sasken]
#define SQ(x) x*x
main()
{
int a=SQ(2+1);
printf("%d",a);
}
a) 5 b) 6 c) 7 d) None of the Given Answers
# There N stations on a railroad. After adding X stations on the rail route 46 additional tickets have to be printed. Find N and X. [Sify]
a) x=2 and N=11 b) x=2 and N=12 c) x=2 and N=13 d) x=3 and N=11
# How is an Non-maskable interrupt handled
a) The current program is executed & then handles the NMI
b) Handles the NMI first & then continues with the execution
c) Handles the interrupt based on the priority
d) Ignores the interrupt & continues with the program.
# Problems like
If QWERT means 2513678397849 what does [some word] equal to ?
# Simple program on fork system call
# Simple problems on inheritance [Java]
# Simple string assignment problems
# If 8 butts of cigarette make 1 cigarette then how many will 64 butts make ?
Ans : 8
# ICMP is used where
a) ICMP supports packets containing error, control, and informational messages.
b) The Ping / Command execution.
c) a&b both





PAPER 2

1. For the following program.

struct XXX
{int a;
float b;
char *s;
}X;

If optimization :X not used in compiler then unused
bits_________________.
Give your assumption_______________.

2. Give the output of the following program

struct XXX
{int a:6;
float b:4;
char s;
}structure;

size of (structure);

3. Class used for the multiple inheritence in JAVA_________________

(a) anonymous class
(b) inner class
(c) abstract class
(d) none

4. XDR fixes in which part of OS1 stack.

5. LDAP is____________service protocol.

6. Given definition for a function which returns a array of pointers


with argument of int*.

7. Give a function declaration with no arguments which refers a two
dimensional array

8. Pick up the correct function declaration.

1. void *[] name();
2. void int[][] name();
3. void ** name();
4. none of the above.

9. Give the difference between monolithic and microlithic kernal:

a. monolithic large
b. microlithic used in embedded systems.
c. none.

10. rPC coresponds to_______________in OSI stack.

11. Find the no.of page faults using LRU stack.

eg.3 4 4 6 7 8 1 2 .. ..

12. The inorder representation of a tree 41523 and preorder is 24513
Draw it?

13. When does a stack member will be initialised

(a) when object is created
(b) when object is initialised.
(c) doesnot depend on object.
(d) none.

14. Number of CPU in a multiprocess is contrassed by

(a) RISC nohere of CPU
(b) memory
(c) both (a) and (b)
(d) None of the above

15. Give the output of the following program

main()
{char *s;
s="hot java";
strcpy(s,"solarrs java")

}

16. Give the output of the following program

main()
{printf("hot java");
fork()
exit(0);
}

(i). When redirected to a screen what will be printed.
(ii). When redirected to file what will be printed.

17. Give the output of the following program

main()
{int ret;
ret=fork();ret=fork();ret=fork();ret=fork();
if(!ret)
printf("sun");
else
printf("solaris");

18. Give the output of the following program

main()
{char *p='a';
int *i=100/*p;
}

what will be the value of *i= 1

19. Which data structure gives efficient search

1 B-tree
2 binary tree
3 array
4 linked list

20. Find the error in the following program

struct point
{struct point *next;
int data;
}
x;

main()
{int i;
for(x=p;x!=0;)
x=x->next,x++;
freelist(x);
}

freelist(x)
{free(x);
return
}

21. Mutex and _________are similar locking mechanisms.

22. A complex question on pointers and functions.

23. SNMP and SMIP transport layer protocols for TCP/IP&OSI.

24 UNIX: difference between select and poll


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