Friday, February 23, 2007

Polaris paper (technical)

1.

What is motor is used in ceiling fan & washing m/cs
2.

In electric traction
3.

wt is 8255
4.

8085 has ___ address and ___ data lines
5.

8051 is a ____ bit microcontroller (ans:8 bit)
6.

74LS244 is _____
7.

Bucholz relay is used for _____ protection (trnsfrmr)
8.

Transmission line parameters are called ____
9.

No. of poles and freq given find speed
10.

In which motor starting torque can be incr by adding rotor resistance (IM) there were 4 qns frm Power plants (had to guess in that) 4 qns frm Controls (pretty easy.....like zetaL)
1 means a)underdamped b)undamped c)overdamped d)critically damped
11.

qn abt transistor..basic workin
12.

boolean expn was given for simplification-simple
13.

How many flags does 8085 have? (ans-5)
14.

which of the following are universal gates? (ans-nand,nor)
15.

whts the frequency range of mobile communication?
16.

The resolution of picture in tv depends on..
a. no: of lines scanned b. video detector o/p and 2 more choices were given...
17.

Qn on stability of FET
18.

Wht is the modulation used to transmit sound in tv signal
a. VSB
b. FM and 2 more choices were there...
19.

Wht is double integration of a unit step signal?
a. ramp signal
b. parabola
20.

It mainly covers Operating system..consists of questions in semaphore( 2 questions), job scheduling algorithms (shortest job),paging (2 or 3 questions),virtual memory,hashing, etc virtual memory is used for............
21.

Rdbms covers "Define Query"(simple but 4 options made some complications)
22.

Datastructure : order of randomly serached binary tree
23.

Electronics based questions which covers microprocessor 80386(not 8085) 2or 3 questions
24.

A pulse is passed through a pipe..to detect any damage..this process is called ..........
a. Time reflectometry
b. Piggy backing
Aptitude
25.

Given a 3x3 matrix, find the minor of one of the elements
26.

find the odd one out of the series 48 47 44 40 32 23 12
27.

A goes to school at 4 kmph and reaches 10 mins b4 schedule and at 3 kmph reaches 10 mins after schdule find thedist (ans 4 km)
28.

Meaning of COY (iritated)
29.

Opposite of Grimace
30.

Opposite of FLOODED WITH
31.

JUMBLED letters find out the word, the word was FATIGUE
32.

Simple interest problem
33.

Smallest of four given fractions
34.

A guy walks @ 4kmph from a point..After 4hrs a cyclist starts from the same point @ 10kmph....At wht distance will they meet from the starting point? the qn was almost like this.
35.

x% of people have tea, y% have coffee, z no: of people have both...find the total no: of people... soln: easy..have to use n(AUB)=n(A)+n(B)-n(A intersctn B)..
36.

Complete the series.... 1,4 ,9,25,... (choices- 47,49,64,none)
37.

Analytical qn
"failures are stepping stones to success" this means...
a. all success are preceded by failures
b. success consists of failures
c. future can lead to success
d. none..
38.

abt matrices.. which of the following don't have inverse? u have to find for which matrix |A|=0...time consuming...
39.

There was 1 big sqr which had 16 sqrs in it..4 in a row & column.. each sqr had a no: in it.. except one sqr.. . had 2 find the missing no:...i dont remember the nos...
40.

4 sentences given..& 4 choices of word given...have to choose 1 word that suits all the 4 sentences... *the police are ___ about the miising boy in the forest. * the detective was ___ her face for marks. and 2 more sentences were there... choices(investigating, searching....).ans:investigating.
41.

Hcf of 2 nos...1024 & 1214...don remember nos exactly..like in rs aggarwal...
42.

out of 500 students,75% of boys and 72% of girls passed.Total pass percentage is 77%.How much girls ...?
43.

how many prime numbers are between 1 to 100?
44.

A greater than B and B less than C. what is the relation between A and C ?
45.

given a set of different sentences ...we have to choose an appropriate word which should be matching with all sentences
eg: A person --------------the child
The government---------------the people options may be 1)saved 2)preserve (this is not the exact question)

Tuesday, February 20, 2007

CISCO SYSTEMS placement papers

COMPUTER AWARENESS TEST


1.In the command scanf, h is used for

Ans. Short int


2.A process is defined as

Ans. Program in execution


3.A thread is

Ans. Detachable unit of executable code)


4.What is the advantage of Win NT over Win 95

Ans. Robust and secure


5.How is memory management done in Win95

Ans. Through paging and segmentation


6.What is meant by polymorphism

Ans. Redfinition of a base class method in a derived class


7.What is the essential feature of inheritance

Ans. All properties of existing class are derived


8.What does the protocol FTP do

Ans. Transfer a file b/w stations with user authentification


9.In the transport layer ,TCP is what type of protocol

Ans. Connection oriented


10.Why is a gateway used

Ans. To connect incompatible networks


11.How is linked list implemented

Ans. By referential structures


12.What method is used in Win95 in multitasking

Ans. Non preemptive check


13.What is meant by functional dependency


14.What is a semaphore

Ans. A method synchronization of multiple processes


15.What is the precedence order from high to low ,of the symbols ( ) ++ /

Ans.( ) , ++, /


16.Preorder of A*(B+C)/D-G

Ans.*+ABC/-DG

18. B-tree (failure nodes at same level)


19. Dense index (index record appers for every search -key in file)


20.What is the efficiency of merge sort

Ans. O(n log n)


21.A program on swaping ( 10,5 )was given (candidate cannot recollect)


22.In which layer are routers used

Ans.In network layer


23.In which layer are packets formed ( in network layer )


24.heap ( priority queue )


25.copy constructor ( constant reference )


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


5.There are 200 questions on a 3 hr examination.Among these questions are 50 mathematics problems.It is suggested that twice as much time be spent on each maths problem as for each other question.How many minutes should be spent on mathematics problems

A.36
B.72
C.60
D.100

Ans.B


6.In a group of 15,7 have studied Latin, 8 have studied Greek, and 3 have not studied either.How many of these studied both Latin and Greek

A.0
B.3
C.4
D.5

Ans.B


7.If 13 = 13w/(1-w) ,then (2w)2 =

A.1/4
B.1/2
C.1
D.2

Ans.C


8. If a and b are positive integers and (a-b)/3.5 = 4/7, then

(A) b < a
(B) b > a
(C) b = a
(D) b >= a

Ans. A


9. In june a baseball team that played 60 games had won 30% of its game played. After a phenomenal winning streak this team raised its average to 50% .How many games must the team have won in a row to attain this average?

A. 12
B. 20
C. 24
D. 30

Ans. C


10. M men agree to purchase a gift for Rs. D. If three men drop out how much more will each have to contribute towards the purchase of the gift/

A. D/(M-3)
B. MD/3
C. M/(D-3)
D. 3D/(M2-3M)

Ans. D


11. A company contracts to paint 3 houses. Mr.Brown can paint a house in 6 days while Mr.Black would take 8 days and Mr.Blue 12 days. After 8 days Mr.Brown goes on vacation and Mr. Black begins to work for a period of 6 days. How many days will it take Mr.Blue to complete the contract?

A. 7
B. 8
C. 11
D. 12

Ans.C


12. 2 hours after a freight train leaves Delhi a passenger train leaves the same station travelling in the same direction at an average speed of 16 km/hr. After travelling 4 hrs the passenger train overtakes the freight train. The average speed of the freight train was?

A. 30
B. 40
C.58
D. 60

Ans. B


13. If 9x-3y=12 and 3x-5y=7 then 6x-2y = ?

A.-5
B. 4
C. 2
D. 8

Ans. D


ANALYTICAL ABILITY

1. The office staff of XYZ corporation presently consists of three bookeepers--A, B, C and 5 secretaries D, E, F, G, H. The management is planning to open a new office in another city using 2 bookeepers and 3 secretaries of the present staff . To do so they plan to seperate certain individuals who don't function well together. The following guidelines were established to set up the new office

I. Bookeepers A and C are constantly finding fault with one another and should not be sent together to the new office as a team
II. C and E function well alone but not as a team , they should be seperated
III. D and G have not been on speaking terms and shouldn't go together
IV Since D and F have been competing for promotion they shouldn't be a team

1.If A is to be moved as one of the bookeepers,which of the following cannot be a possible working unit.

A.ABDEH
B.ABDGH
C.ABEFH
D.ABEGH

Ans.B


2.If C and F are moved to the new office,how many combinations are possible

A.1
B.2
C.3
D.4

Ans.A


3.If C is sent to the new office,which member of the staff cannot go with C

A.B
B.D
C.F
D.G

Ans.B


4.Under the guidelines developed,which of the following must go to the new office

A.B
B.D
C.E
D.G

Ans.A


5.If D goes to the new office,which of the following is/are true

I.C cannot go
II.A cannot go
III.H must also go

A.I only
B.II only
C.I and II only
D.I and III only

Ans.D


2.After months of talent searching for an administrative assistant to the president of the college the field of applicants has been narrowed down to 5--A, B, C, D, E .It was announced that the finalist would be chosen after a series of all-day group personal interviews were held.The examining committee agreed upon the following procedure

I.The interviews will be held once a week
II.3 candidates will appear at any all-day interview session
III.Each candidate will appear at least once
IV.If it becomes necessary to call applicants for additonal interviews, no more 1 such applicant should be asked to appear the next week
V.Because of a detail in the written applications,it was agreed that whenever candidate B appears, A should also be present.
VI.Because of travel difficulties it was agreed that C will appear for only 1 interview.

1.At the first interview the following candidates appear A,B,D.Which of the follwing combinations can be called for the interview to be held next week.

A.BCD
B.CDE
C.ABE
D.ABC

Ans.B


2.Which of the following is a possible sequence of combinations for interviews in 2 successive weeks

A.ABC;BDE
B.ABD;ABE
C.ADE;ABC
D.BDE;ACD

Ans.C


3.If A ,B and D appear for the interview and D is called for additional interview the following week,which 2 candidates may be asked to appear with D?

I. A
II B
III.C
IV.E

A.I and II
B.I and III only
C.II and III only
D.III and IV only

Ans.D


4.Which of the following correctly state(s) the procedure followed by the search committee

I.After the second interview all applicants have appeared at least once
II.The committee sees each applicant a second time
III.If a third session,it is possible for all applicants to appear at least twice

A.I only
B.II only
C.III only
D.Both I and II

Ans.A


3. A certain city is served by subway lines A,B and C and numbers 1 2 and 3
When it snows , morning service on B is delayed
When it rains or snows , service on A, 2 and 3 are delayed both in the morning and afternoon
When temp. falls below 30 degrees farenheit afternoon service is cancelled in either the A line or the 3 line,
but not both.
When the temperature rises over 90 degrees farenheit, the afternoon service is cancelled in either the line C or the
3 line but not both.
When the service on the A line is delayed or cancelled, service on the C line which connects the A line, is delayed.
When service on the 3 line is cancelled, service on the B line which connects the 3 line is delayed.

Q1. On Jan 10th, with the temperature at 15 degree farenheit, it snows all day. On how many lines will service be
affected, including both morning and afternoon.

(A) 2
(B) 3
(C) 4
(D) 5

Ans. D


Q2. On Aug 15th with the temperature at 97 degrees farenheit it begins to rain at 1 PM. What is the minimum number
of lines on which service will be affected?

(A) 2
(B) 3
(C) 4
(D) 5

Ans. C


Q3. On which of the following occasions would service be on the greatest number of lines disrupted.

(A) A snowy afternoon with the temperature at 45 degree farenheit
(B) A snowy morning with the temperature at 45 degree farenheit
(C) A rainy afternoon with the temperature at 45 degree farenheit
(D) A rainy afternoon with the temperature at 95 degree farenheit

Ans. B


4. In a certain society, there are two marriage groups, red and brown. No marriage is permitted within a group. On marriage, males become part of their wives groups; women remain in their own group. Children belong to the same group as their parents. Widowers and divorced males revert to the group of their birth. Marriage to more than one person at the same time and marriage to a direct descendant are forbidden

Q1. A brown female could have had

I. A grandfather born Red
II. A grandmother born Red
III Two grandfathers born Brown

(A) I only
(B) III only
(C) I, II and III
(D) I and II only

Ans. D


Q2. A male born into the brown group may have

(A) An uncle in either group
(B) A brown daughter
(C) A brown son
(D) A son-in-law born into red group

Ans. A


Q3. Which of the following is not permitted under the rules as stated.

(A) A brown male marrying his father's sister
(B) A red female marrying her mother's brother
(C) A widower marrying his wife's sister
(D) A widow marrying her divorced daughter's ex-husband

Ans. B


Q4. If widowers and divorced males retained their group they had upon marrying which of the following would be permissible ( Assume that no previous marriage occurred)

(A) A woman marrying her dead sister's husband
(B) A woman marrying her divorced daughter's ex-husband
(C) A widower marrying his brother's daughter
(D) A woman marrying her mother's brother who is a widower.

Ans. D


5. I. All G's are H's
II. All G's are J's or K's
III All J's and K's are G's
IV All L's are K's
V All N's are M's
VI No M's are G's

Q1. If no P's are K's which of the following must be true

(A) No P is a G
(B) No P is an H
(C) If any P is an H it is a G
(D) If any P is a G it is a J

Ans. D


Q2. Which of the following can be logically deduced from the stated conditions

(A) No M's are H's
(B) No H's are M's
(C) Some M's are H's
(D) No N's are G's

Ans. D


Q3. Which of the following is inconsistent with one or more conditions

(A) All H's are G's
(B) All H's are M's
(C) Some H's are both M's and G's
(D) No M's are H's

Ans. C


Q4. The statement "No L's are J's" is

I. Logically deducible from the conditions stated
II Consistent with but not deducible from the conditions stated
III. Deducible from the stated conditions together with the additional statements "No J's are K's"

(A) I only
(B) II only
(C) III only
(D) II and III only

Ans. D

CISCO SYSTEMS Company profile

Interview Procedure :

The written test is followed by a lengthy technical interview. The interview may last up to 1 hour or more. It is entirely technical with questions on all basic fundamentals.
The written test consists of three sections based on the MCQ pattern. Each section has 30 questions. There is a choice between Section 2 and Section 3 and only one has to be done.
Section 1 is based on basic digital electronics.
Section 2 is software oriented
Section 3 is advanced digital electronics with questions on setup, hold time, clock violation etc.


About The Company

Cisco Systems is the worldwide leader in networking for the Internet. Cisco provides end-to-end networking solutions. Cisco sells its products in approximately 115 countries .Cisco is one of America's greatest corporate success stories. Since shipping its first product in 1986, the company has grown into a global market leader that holds No. 1 or No. 2 market share in virtually every market segment in which it participates. Since becoming a public company in 1990, Cisco's annual revenues have increased from $69 million in that year to $12.2 billion in fiscal 1999. As measured by market capitalization, Cisco is among the largest in the world.