| FLEXTRONICS Placement paper -1 |
| Written by Java Guru | |||||||||
| Thursday, 10 July 2008 15:07 | |||||||||
Section C 1.                 an lead compensator zero is at Z=Zc, pole is at P=Pc then the following is correct   a. Pc > Zc, pc< 0, zc< 0 b. c. 2.                 gain margin of g(s)h(s)=1/s(s+k); a.  sqrt(1+k2) b.  0 c.   infinity d.   1 3.                 machestor code does not improves                                                                a. clock recovery b. bandwidth efficiency c. 4.                 possion distribution is used for a. used in FSM b. c.used for queuing delay system of mutually identical events of arrival d. both a and c 5.                  no.of filpflops for mod 11 counter a. four b. five c. 6.                  no.of filpflops for mod 11 counter a. four b. five c. 7.                 if even parity is used for parity generation, what is the hamming distance (simple fig is given) ans:2 8.                 the code set is {00000,00111,11100,11011} what is the error detecting and correcting capability? ans:2,1 9.                 operational amp characteristics following is correct:                                       1. input impedance is 0 2. output impedance is infinity 3. input impedance is infinity 4. gain is infinity which combinations are correc 10.              band pass signal having frequencies 2.5k and 4.5k?give the sampling freq a. 9k b. 4k c. 4.5k d. 7k 11.             definition of avalanche diode multiplication 12.              more no of ripples are present in the diagram?which is correct                     a.  lower order filter b.  high order filter c. 13.              If CPU have one interrupt pin and on to connect with external devices with some priority? which type of the following is used? a. parallel priority interrupt b. daisy chain c. RS filpflop d. 14.              one megabit file transfer, serially on 9600 baud one start bit and two stop bits, then how much time it takes (approx) a.  4 hours b.  2 hours c.  20 minutes d.  2 minute 15.             IEEE 802.5 is ans: TOKEN RING 16.             Code sequence is given what is the error correcting distance 17.             bit stuffing used in HDLC Protocol for ans: b is correct(read on text book)        Section A AND B (Both are mixed ) 18   If "AaBbCc" is passed to the char char x(*a) { a[0]?x(a+1):1; printf("%c",a[0]); return 1; } what will be the output? 19    f(*p) { p=(char *)malloc(6); p="hello"; return; } main() { char *p="bye"; f(p); printf("%s",p);                                                                                  } what is the o/p? ans:bye 20   hen the program counter is incremented in the instruction cycle a. fetch cycle b. int cycle c. execuation cycle d. 21   wo sorted lists of n elements will take at least fine the order of complexity? a. 2n b. n/2 c. square(n) 22   logic diagram is given? find the expression ans: OR gate 23   uestion on JAVA string ans: string ends without a null character 24   ache access time is 100ns. main memory access time is 1000ns, hit ratio is .9, find mean access time? ans :200ns 25   hich is not suitable to find out IP address ans:ARP 26 about deadlock condition 27 convert 41.6875 into binary 28 read about IP AND IPX 29 read about NFS 30 DHCP is a. for routing b. for network address conversion                                                        c. for diagnosis d. 31   xecution phase can be a. pipelined b. no parallelism is possible c. vector processing d. 32               In public key algorithm , A wants to send message to B ..... which key is used a. A public key b. A private key c. B public key d. B private key 33               to prevent replay attacks in transmission a.  symmetric encoding b.  Asymmetric encoding c.   for every exchange, key should be changed 34               irtual functionality is used in C++ a.  dynamic binding b.  if the derived func is present but base class not present                             c. 35                if there are n nodes in a binary tree, how many null pointers are there ans:n+1; 36                if heap sort contains n elements, no of comparsions required are a. log(n) b. height of heap sort c. d. 37               question on ICV(integrity check) 38               which of the following is efficient in terms of space a. insertion sort b. quick sort c. selection d. both a and c 39               in 32 bit representation, the range of numbers in 2's complement form ans :-2 to the power of 31 to 2 to the power of 31 minus 1 40               about normalization 41               socket is implemented in TCP Layer. which of the following is related to TCP layer ans: port number 42               in reentrant procedure, which should be not used for passing parameters?        a. passed by reg b. by direct c. by indirect d. by stack 43                flow control is used for a. congestion at receiver b. c. d. 44               flow control is used for a. congestion at receiver b. c. d. 45               5 questions on DBMS are there 46               in global static variable , declartion in a file a.  localization of scope b.  persistance of the value through out the file                                          c. d. 47               in sorted table contains elements , which of the searching is false a. hash table b. binary searching 48                in demand paging overhead of context switching is more due to a. copy processes from disk to memory b. viceversa c. to get associative table d. swapping to the disk 49                when write through is better than write back(related to cache memory) 50               which is false when normalization is used?can't express 51               I :verification: are we doing right product II: validation:are we doing product right a. i and ii are true b. i and ii are false c. i true and ii false d. i false and ii true 52                A table contains less than 10 elements which one is fastest a. bubble sort b. selection sort c. quick sort 53                about subroutine, precondition is false. what about post condition                      a. post condition is not defined b. post condition is always true c. d. 54               When static variables are used, which one of the following is not possible? a. dynamic run time b. c. 55                in product of x and y, if(x=0|y=0) y=1; else y=0; (not cleared) what is cyclometric complexity? a. 3 b. 2 c. 1 d. 0 56               CREATE TABLE NEW AS SELECT BIG FROM EMP The above SQL statement is correct or not? (question is not cleared) 57               path testing is a. white box b. black box c. installation test d. environment test                                                                                   58               program is given? above algorithm represents what type of search? a.  binary search b.  interpolation search c.  sequential search d. (may be "b" is correct); 59               if x->y in a relation R, x1 and x2 are in x, y1 and y2 are in y (question not cleared), about functional dependancy a.x1=x2 and y1=y2 b. c. 60               in a down loading from website ,which one is correct? ans: check the byte code and indicate the error, if any. 61               about UDP one Address is given but that is not the state table what will it do the packet a. packet is discarded b. packet is sent to ethernet server c. packet is sent to other address d. 62                in associated memory for fast accessing which one is used                        a. single linked list b. double " c. hash table 63   hich of the folowing is not correct a. (x+y)'=x'.y' b. (x'+y')'=x.y c. (x'.y')'=x+y d. (x'+y')'=x'.y' [d] 64               Question on logic ckt. U have to find the output   ans. AB'+CD'+EF' 65               Output of MUX _________ c-----| | c'----| |-------Y c'----| | ans. A xor B xor C c-----| |--------- | | A B (select lines) 66               If X and Y are two sets. |X| and |Y| are corresponding coordinates and exact no.of functions from X to Y is 97 then a. |X|=97 |Y|=1 b. |X|=1 |Y|=97                                                                     c. |X|=97 |Y|=97 d. ..... 67               If two dies are thrown simultaneously what is the prob. of one of the dice getting face 6 ? a. 11/36 b. 1/3 c. 12/35 d. 1/36 [a] 68                The relation ,<,on reals is a. a partial order because of symmetric and reflexive b. ... antisymmetric and .... c. not ...... .. asymmetric and non reflexive d. ... .... not anti-symm and non reflexive 69                In C language the parameters are passsed by    a. values b. name c.referrence d.... 70               Advantage of SRAM over DRAM  ans. faster 71                Diasy chaining related question (refer Z80) a. uniform interrupt priority b.non .... .... c.interfacing slower peripherals d..... 72               RAM chips arranged in 4X6 array and of 8kX4bit capacity each. How many address lines reqd. to access each byte a. 12 b. 16 c.15 d. 17 73               Question related to AVL trees regarding how many no.of nodes to be changed to become balanced after addition of a leaf node to a particular node. ans . 3 74               When following sequence is insertedin the binary search tree no.of nodes in left and right subtrees 52 86 64 20 3 25 14 9 85 75               Method used for Disk searching..   a.l inked list b. AVL c. B-tree d.  binary tree 76               Which of the following is correct statement. a.  1's complement can have two zero re[resentations                                b.  2's ... ... represent an extra neg. number c.  2's & 1's have no difference in representing 16-bit no. d....... 77               AX=B where A is mXn ,b&X are column matrices of order m a. if m b.if m=n, rank of A < c.... solutions trivial then> 78               The option avialable in C++, not C: a. dynamic scoping b. declaration in the middle of code block c.  seperate compiled and linked units d. .... 79                 int a[4]={1,2,3,4}; int *ptr; ptr=a; *(a+3)=*(++ptr)+(*ptr++); A part of code is shown. The elements in A after the execution of this code. a.1 2 3 4 b. 1 2 3 6 c. compilation error d.1 2 2 4 [a] 80               Critical section program segment is a.  enclosed by semaphores with P & V operations b.  deadlock avoidance c.   where shared resources are accessed d. ... 81               when head is moving back and forth, the disk scheduling algorithm is _____ a) scan  b) sstf  c) fcfs  d).... 82               how many times the loop will execute LOOP LXI B,1526H DCX B JNZ LOOP a)  1526H times   b)   31   c) 21  d) 38                                       83               the addressing mode in which the address of the operand is expressed explicitly within the instruction a)  index addressing b)  absolute c)  indirect d)  immediate 84               (A - B) U (B - A) U (A ^ C) = ? where A,B are two sets A' , B' are compliments of A and B a) A U B  b) A ^ B  c)....  d).... 85                The network that does not use virtual circuit a) IP  b) X.25  c)....  d).. 86               source routing bridge a) source will route the frame b) frame will routed with info in header c).... d).. 87                cache access time 100 msec. main memory access time 800 msec if the hit ratio is 95% , what is mean access time ... 88               The module that should be always reside in main memory is a) loader b) link module  c)...  d).... .... and some questions related to 1.  addressing mode 2.assembler passes 3.linking and loading 4. file directory search 5. turning machine 6. finite state machine 7. daisy wheel 89               The order of algorithm to merge the two sorted lists of lengths m and n is a. O(m) b. O(n) c. O(m+n) d. O(log(m)+log(n)) 90               A chocolate block is of 4 X 4 size.How many cuts are needed to make 1 X 1 size blocks. No simultaneous vert. & horz. cuts. 91               Which among the following is not correct a. O(n) > O(log n) .. likewise Section C 92   ne question of Set Theory Like there Are two sets A and B and (A-B)union(B-A)union(A intersection B) is equivalent to Ans. A union B 93                 Union and intersection are in there sign conventions. 94               One question of probability Like between 100 and 999 how many no have the prob that they does not contain 7 Ans. 16/25 (not sure u can check by own) 95               Of Newton Rapson method... 96               Of power set A set contains {(fi),a,{a,b}} what is the powerset of it  Ans. 8 97               A question of logic gates Ans. U can got the answer very easily 98               A question on the Booths algo Ans. The sequence is 1010101010101010 99               Relative addressing mode is used for Ans. Dont know.                                           100           For how many numbers there is no difference between little endian and big endian Ans. 256 101           For the multiplication of two 8 bit numbers how much ROM will be used Ans. 64k*16 ROM(Check it) 102           Why direct mapping is not good for the mapping of Cache Memory. Ans. Dont know 103           What is the main property of Desiy I/O Sytem Ans. 104           A question on the nyquist theorem Ans. 18000 bps 105           What is the shannon theorem... Ans. Refer to data communication(Stalling) book 106           CSMA/CD protocol is used in Ans. Ethernet 107           What is the limitation of the Pulse Code Modulation Ans. Refer to data communication book 108           In CSMA/CD Ans. The Access to the channnel is probabilistic. 109           For an IP Router how many IP addresses Ans. Check it i think Answer is Only One. 110           Which protocol u used when you want to know the IP address corresponding to a MAC Address Ans. RARP 111           Which part of the IP header is used for the time limit of the packet. Ans. TTL 112           Which PageReplacement algo will give the best result Ans. By replacing that page which has the next reference after a long time.(optimal algo) 113           What the code will be said when it is called by another part and it is not completed yet Ans. Reentrant Code. 114            three questions on the simple programs                                                                 115           There is a sequence of no and prepare a binary tree and tell how many nodes are in the left and right sub tree. Ans. Check it Ans (4,7) 116           hat is the rank of the graph Ans. e-n+k 117           One question on the multithreading 118           Which traversal of the tree gives the node in the ascending order. Ans. Inorder 119           Which traversal of the tree gives the node in the ascending order. Ans. Inorder 120           What is garbage collector. 121 lead compensator zero is at Z=Zc, pole is at P=Pc then the following is correct   a. Pc > Zc, pc< 0, zc< 0 b. c. 122           gain margin of g(s)h(s)=1/s(s+k); a.  sqrt(1+k2) b.  0 c.   infinity d.   1 123           machestor code does not improves                                                                a. clock recovery b. bandwidth efficiency c. 124           possion distribution is used for a. used in FSM b. c.used for queuing delay system of mutually identical events of arrival d. both a and c 125            no.of filpflops for mod 11 counter a. four b. five c. 126            no.of filpflops for mod 11 counter a. four b. five c. 127           if even parity is used for parity generation, what is the hamming distance (simple fig is given) ans:2 128           the code set is {00000,00111,11100,11011} what is the error detecting and correcting capability? ans:2,1 129           operational amp characteristics following is correct:                                       1. input impedance is 0 2. output impedance is infinity 3. input impedance is infinity 4. gain is infinity which combinations are correc 130            band pass signal having frequencies 2.5k and 4.5k?give the sampling freq a. 9k b. 4k c. 4.5k d. 7k 131           definition of avalanche diode multiplication 132            more no of ripples are present in the diagram?which is correct                     a.  lower order filter b.  high order filter c. 133            If CPU have one interrupt pin and on to connect with external devices with some priority? which type of the following is used? a. parallel priority interrupt b. daisy chain c. RS filpflop d. 134            one megabit file transfer, serially on 9600 baud one start bit and two stop bits, then how much time it takes (approx) a.  4 hours b.  2 hours c.  20 minutes d.  2 minute 135           IEEE 802.5 is ans: TOKEN RING 136           Code sequence is given what is the error correcting distance 137           bit stuffing used in HDLC Protocol for ans: b is correct(read on text book)        Section A AND B (Both are mixed ) 138 "AaBbCc" is passed to the char char x(*a) { a[0]?x(a+1):1; printf("%c",a[0]); return 1; } what will be the output? 139             f(*p) { p=(char *)malloc(6); p="hello"; return; } main() { char *p="bye"; f(p); printf("%s",p);                                                                                  } what is the o/p? ans:bye 140           when the program counter is incremented in the instruction cycle a. fetch cycle b. int cycle c. execuation cycle d. 141           two sorted lists of n elements will take at least fine the order of complexity? a. 2n b. n/2 c. square(n) 142            logic diagram is given? find the expression ans: OR gate 143           question on JAVA string ans: string ends without a null character 144           cache access time is 100ns. main memory access time is 1000ns, hit ratio is .9, find mean access time? ans :200ns 145           which is not suitable to find out IP address ans:ARP 146            about deadlock condition 147           convert 41.6875 into binary 148            read about IP AND IPX 149           read about NFS 150            DHCP is a. for routing b. for network address conversion                                                        c. for diagnosis d. 151           execution phase can be a. pipelined b. no parallelism is possible c. vector processing d. 152           In public key algorithm , A wants to send message to B ..... which key is used a. A public key b. A private key c. B public key d. B private key 153           to prevent replay attacks in transmission a.  symmetric encoding b.  Asymmetric encoding c.   for every exchange, key should be changed 154           irtual functionality is used in C++ a.  dynamic binding b.  if the derived func is present but base class not present                             c. 155            if there are n nodes in a binary tree, how many null pointers are there ans:n+1; 156            if heap sort contains n elements, no of comparsions required are a. log(n) b. height of heap sort c. d. 157           question on ICV(integrity check) 158           which of the following is efficient in terms of space a. insertion sort b. quick sort c. selection d. both a and c 159           in 32 bit representation, the range of numbers in 2's complement form ans :-2 to the power of 31 to 2 to the power of 31 minus 1 160           about normalization 161           socket is implemented in TCP Layer. which of the following is related to TCP layer ans: port number 162           in reentrant procedure, which should be not used for passing parameters?        a. passed by reg b. by direct c. by indirect d. by stack 163            flow control is used for a. congestion at receiver b. c. d. 164           flow control is used for a. congestion at receiver b. c. d. 165           5 questions on DBMS are there 166           in global static variable , declartion in a file a.  localization of scope b.  persistance of the value through out the file                                          c. d. 167           in sorted table contains elements , which of the searching is false a. hash table b. binary searching 168            in demand paging overhead of context switching is more due to a. copy processes from disk to memory b. viceversa c. to get associative table d. swapping to the disk 169            when write through is better than write back(related to cache memory) 170           which is false when normalization is used?can't express 171           I :verification: are we doing right product II: validation:are we doing product right a. i and ii are true b. i and ii are false c. i true and ii false d. i false and ii true 172            A table contains less than 10 elements which one is fastest a. bubble sort b. selection sort c. quick sort 173            about subroutine, precondition is false. what about post condition                      a. post condition is not defined b. post condition is always true c. d. 174           When static variables are used, which one of the following is not possible? a. dynamic run time b. c. 175            in product of x and y, if(x=0|y=0) y=1; else y=0; (not cleared) what is cyclometric complexity? a. 3 b. 2 c. 1 d. 0 176           CREATE TABLE NEW AS SELECT BIG FROM EMP The above SQL statement is correct or not? (question is not cleared) 177           path testing is a. white box b. black box c. installation test d. environment test                                                                                   178           program is given? above algorithm represents what type of search? a.  binary search b.  interpolation search c.  sequential search d. (may be "b" is correct); 179           if x->y in a relation R, x1 and x2 are in x, y1 and y2 are in y (question not cleared), about functional dependancy a.x1=x2 and y1=y2 b. c. 180           in a down loading from website ,which one is correct? ans: check the byte code and indicate the error, if any. 181           about UDP one Address is given but that is not the state table what will it do the packet a. packet is discarded b. packet is sent to ethernet server c. packet is sent to other address d. 182            in associated memory for fast accessing which one is used                        a. single linked list b. double " c. hash table d. 183 nice('val')? unix command 184 for(l=1;a<=l;a++) cout<<++a;cout< output? a.21 b.22 c.23 d.none 185nt a[4]={1,2,3,4}; array to the pointer? a.int *a[4] b.int (*a)[4] 186valid system prievlage in restricted seesion? a. create user b. create session c. restricted session 187emaphore? a. shared memory b....... 188Semaphore? a. shared memory b....... 189which is used to store hard disk sector info                                                                 a.  eerom b.  rom c . ram d. cmos 190If duplicate segments , file are there in hardisk which is best for management a. fat b. san c. raid(may be) d........... 191If a lan with 100mbps is there which wan can give same features? a.  atm b.  isdn c.  x.25 d. .... 192 IPv6 has how many bytes for its address? a.  8 b. 12 c.  16 193Sliding window in which layer?                                                                           a.  session layer b.  transport layer c.  application layer d.  presentation layer 194when interupt occurs to cpu what happen? 195DEBUG trigger (oracle) 196order of insertion sort and Heap sort? a. O(n**2),O(nlogn) b......... 197NEXTVAL and CURRENTVAL in sequence (Oracle)? 198Which one is called family tree? a.  B+ b.  Binary c.  AVL 199Intel 386 support which memory management? a.  paged b.  segmented c.  paged segmented d........ 200Complexity to access name from the given double link list?                                  |A|-->|B| |  |<--|  | a. O(n) b. O(n**2) c. O(nlogn) 201 question on virtual function and overloading? 202 question to find error in this C++ code.      Â
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