1. A family I know has several children. Each boy in this family has as many sisters as brothers but each girl has twice as many brothers as sisters. How many brothers and sisters are there?

Ans: 4 boys and 3 girls.

2. In a soap company a soap is manufactured with 11 parts. For making one soap you will get 1 part as scrap. At the end of the day u have 251 such scraps. From that how many soaps can be manufactured?

Ans: 25.I think the answer is 25

251/11=22scraps+22soaps(remainder 9 scraps)22/11=2scraps+2 soapsso now you have a total 11 scraps with which =1scrap+1soap

so totally 22+2+1=25 soaps

3. There is a 5digit no. 3 pairs of sum is eleven each. Last digit is 3 times the first one. 3 rd digit is 3 less than the second.4 th digit is 4 more than the second one. Find the digit.

Ans : 25296.

4. Given following sequence, find the next term in the series:

(i) 0, 2, 4, 6, 8, 12, 12, 20, 16, ____ Ans: 12

(ii) 3, 6, 13, 26, 33, 66, ___ Ans: 53

5. there are 3 custoners who wants to take a hair cut and shave. there are 2 barbers who takes one quarter of an hour for a hair cut, and 5 minutes for a shave. both the barbers want to finish off and go quickly to their homes. in what time can do it.

6. we travelled to a place at the rate of 10 miles per hour and offcourse returned the same way, but owing to less traffic at the rate of 15 miles per hour.what was our relative speed.

7. In the case of a 70 MHz 1F carries for a transponder band width of 36 MHz; energy must lie between – MHz.

a.) 34 and 106b.) 52. And 88c.) 106 and 142d.) 34 and 142

8. Radar used to eliminate clutter in navigational application is –

a.) Pulse radarb.) Tracking radarc.) MTI radard.) Mono pulse radar

9. The 1.55 mm windows is not yet in use with fiber optic systems because –

a.) The attenuation is higher than at 0.85 mmb) The attenuation is higher than at 1.3mmc.) Suitable laser devices have not yet been developedd.) It does not lend itself to wavelength multiplexing

10. The UNIX shell ....

a) does not come with the rest of the systemb) forms the interface between the user and the kernalc) does not give any scope for programmingd) deos not allow calling one program from with in anothere) all of the above

Ans. (b)

11. enum number { a= -1, b= 4,c,d,e}

What is the value of e ?

(a) 7(b) 4(c) 5(d) 15(e) 3

12. Output of the following program ismain(){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) 0,5,9,13,17b) 5,9,13,17c) 12,17,22d) 16,21e) Syntax error

Ans. (d

13. What is the output in the following programmain(){char c=-64;int i=-32unsigned int u =-16;if(c>i){printf("pass1,");if(cprintf("pass2");elseprintf("Fail2");}elseprintf("Fail1);if(iprintf("pass2");elseprintf("Fail2")}

a) Pass1,Pass2b) Pass1,Fail2c) Fail1,Pass2d) Fail1,Fail2e) None of these

Ans. (c)

14. A jogger wants to save ?th of his jogging time. He should increase his speed by how much %age.

Ans: 33.33 %  15. A is an integer. Dividing 89 & 125 gives remainders 4 & 6 respectively. Find a ?     Ans: 17

16. Which is smallest?     a. 1/7b 1/8c 2/9d 3/13 or something similar having denominations as 11 and 13 in option ?d? and ?e?

17. Which of the following operator is not used in Outer Join?a. =b. !=c. ANDd. OR

18. PL/SQL uses which of the followinga. Early Bindingb. Late bindingc. No Bindingd. Deferred Binging

19. select deptno, count(empno) from empwhere count(empno)>=5group by deptno;identify the line no which contains the errora. 1b. 2c. 3d. 1,3

20. choose the group function that can be used with any data typea. sum()b. min()c. avg()d. all

Section-I

1.The attenuation in wave guides near the cutoff frequency is-

a)Zero

b)Very Low

c)Medium High

2.The VHF band is-

a)30M hz-300Mhz

b)300Hz-3Khz

c)3Khz-30Khz

d)30 Khz-300khz

3.Which type of fading cause serious distortion of modulated signal

a)selective fading

b)interference fading

c)absorption fading

d)polarization fading

4.As electromagnetic waves travel in space only one can happen

a).absorption

b).attenuation

c).rflection

d).refraction

5.frequency of microwave is 1-40 ghz

a).15khz

b).15mhz

c).less than 2000 mhz

d).more than 2000 mhz

6.ideal value of vswr

a).zero

b).1

c).2

d).infinity

8.Balun is a transformer which changes

a). unbalanced to balanced line

b). balanced to unbalanced line

c). zero to infinite impedance

d). input like transformer

9.a PIN diode is

a). suitable for use as microwave switch

b).used as microwave detector

c). semiconductor point contact diode

d).microwave mixer diode

10.H plane tee is also

a).shunt t

b). series t

c). shunt series t

d). none

11.D layer roughly extends from

a). 20 -50km

// b). 55-90 km

c). upto 110 km

d). up to 50 km

12.Anti side tone circuit in telephone is used to

a). amplify side tone

b).suppress side tone

c). eliminate side tone

d).attenuate side tone

13. when modulating freq. is doubled ,modulating index is halved and modulating voltage remains constant.system is

a). AM

b). FM

c). Pm

d). any one

14. 10 bit A/D converters,the quantization error in %-

a). 1

b).2

c).0.1

d).0.2

15.What is memory word addressing capability of 8085 µp

a). 32k

b).64k

c).255k

d).512 k

16.fading can be avoided by-

a).providing space diversity reception

b).providing AVC in receiver

d).All are possible

17.companding is used

a).to protect small signal in PCM from quantization distortion

b). to overcome quantized noise in PCM

c). to overcome impulse noise

d). none of these

18.GSM channel bandwidth is

a ).200mhz

              b).200khz

c).25 mhz.

d.)25 khz

19. efficiency of antenna increases in

a).ohmic resistance of antenna

b).radiation restince of antenna

c). input reacrance of antenna

d). all d above

20.which of following is digital

a).pulse position modulation

b). pulse code modulation

c). pulse width modulation

d). pulse freq. modulation

21. highest voltage gain can be obtained from

a ).CC

b).CE

c).CB

d).Both CE and CB

22.Transistors are generally free from which of following type of noise

a).Resistance noise

b). shot noise

c).flicker noise

d). partition noise

23.Converter is a device used for transforming

a). AC to DC

b). DC to Dc

c).DC to AC

d).AC to AC

24.for satellite communication the freq should be

a). less than fc

b). equal to critical freq of ionosphere

c).more than critical freq of ionosphere

d). none of these

25. tlephone traffic is measured in

a). in terms of gos

b). erlang

c). with echo cancellers

d). none

Section -2 Computer network

1.virtual switching is form of

             a). datagram switching

             b).message switching

             c). packet switching

             d). circuit switching

2. X.25  provides data link control using one of the following bit oriented protocol

              a). LAP

              b). LAP B

              c)  LAP C

               d). HDL C

3. a protocol concerned with file transfer,management, and access is

               a). MHS

               b) FTAM

               c).DS

               d) CMIP

4.In OSI layer does FDDI protocol operate ?

               a). physical

               b). data link

               c). physical and datalink

               d). network

5. what r chips on which computer COM ports are based

               a). USB chip

               b).UART

               c). UNC

               d), UDP

6. Which type of connector is used in LAN cable

               a). RJ11

                b).RJ40

                c).RJ45

                d).RJ 30

7. How two switch can be connected

               a).Straight cable

               b).unleashed twisted pair cable

               c)P.twisted pair cable

               d). cross cable

8. two addresses required for communication

               a). IP & logical addrs.

               b).IP & physical addrs.

               c).IP & MAC

              d). IP & communicating addrs

9.What is smtp?

              a).protocol on LAN

              b).protocol for email over internet

              c).protocol for retrieving email fom server on lan

              d). software allows user view HTML documents

10.Primary rate interface of isdn used in india correspond to

             a) 2B+D16 structure at 192 Usps

             b).23B+D64 structure at 1.544Mbps

             c). 30B+2D64 structure at 2.048Mbps

             d).23B+D64 structure at 1.544Mbps

e).2B+D16 structure at 144Usps

Section-I1.The attenuation in wave guides near the cutoff frequency is-

a)Zero

b)Very Low

c)Medium High

2.The VHF band is-

a)30 hz-300hz

b)300Hz-3Khz

c)3Khz-30Khz

d)30 Khz-300khz

3.Which type of fading cause serious distortion of modulated signal

a)selective fading

b)interference fading

c)absorption fading

d)polarization fading

4.As electromagnetic waves travel in space only one can happen

a).absorption

b).attenuation

c).rflection

d).refraction

5.frequency of microwave is

a).15khz

b).15mhz

c).less than 2000 mhz

d).more than 2000 mhz

6.ideal value of vswr

a).zero

b).1

c).2

d).infinity

8.Balun is a transformer which changes

a). unbalanced to balanced line

b). balanced to unbalanced line

c). zero to infinite impedance

d). input like transformer

9.a PIN diode is

a). suitable for use as microwave switch

b).used as microwave detector

c). semiconductor point contact diode

d).microwave mixer diode

10.H plane tee is also

a).shunt t

b). series t

c). shunt series t

d). none

11.D layer roughly extends from

a). 20 -50km

b). 55-90 km

c). upto 110 km

d). up to 50 km

12.Anti side tone circuit in telephone is used to

a). amplify side tone

b).suppress side tone

c). eliminate side tone

d).attenuate side tone

13. when modulating freq. is doubled ,modulating index is halved and modulating voltage remains constant.system is

a). AM

b). FM

c). Pm

d). any one

14. 10 bit A/D converters,the quantization error in %-

a). 1

b).2

c).0.1

d).0.2

15.What is memory word addressing capability of 8085 µp

a). 32k

b).64k

c).255k

d).512 k

16.fading can be avoided by-

a).providing space diversity reception

b).providing AVC in receiver

d).All are possible

17.companding is used

a).to protect small signal in PCM from quantization distortion

b). to overcome quantized noise in PCM

c). to overcome impulse noise

d). none of these

18.GSM channel bandwidth is

a ).200mhz

b).200khz

c).25 mhz.

d.)25 khz

19. efficiency of antenna increases in

a).ohmic resistance of antenna

b).radiation restince of antenna

c). input reacrance of antenna

d). all d above

20.which of following is digital

a).pulse position modulation

b). pulse code modulation

c). pulse width modulation

d). pulse freq. modulation

21. highest voltage gain can be obtained from

a ).CC

b).CE

c).CB

d).Both CE and CB

22.Transistors are generally free from which of following type of noise

a).Resistance noise

b). shot noise

c).flicker noise

d). partition noise

23.Converter is a device used for transforming

a). AC to DC

b). DC to Dc

c).DC to AC

d).AC to AC

24.for satellite communication the freq should be

a). less than fc

b). equal to critical freq of ionosphere

c).more than critical freq of ionosphere

d). none of these

25. tlephone traffic is measured in

a). in terms of gos

b). erlang

c). with echo cancellers

d). none

Section -2 Computer network

1.virtual switching is form of

             a). datagram switching

             b).message switching

             c). packet switching

             d). circuit switching

2. X.25  provides data link control using one of the following bit oriented protocol

              a). LAP

              b). LAP B

              c)  LAP C

               d). HDL C

3. a protocol concerned with file transfer,management, and access is

               a). MHS

               b) FTAM

               c).DS

               d) CMIP

4.In OSI layer does FDDI protocol operate ?

               a). physical

               b). data link

               c). physical and datalink

               d). network

5. what r chips on which computer COM ports are based

               a). USB chip

               b).UART

               c). UNC

               d), UDP

6. Which type of connector is used in LAN cable

               a). RJ11

                b).RJ40

                c).RJ45

                d).RJ 30

7. How two switch can be connected

               a).Straight cable

               b).unleashed twisted pair cable

               c)P.twisted pair cable

               d). cross cable

8. two addresses required for communication

               a). IP & logical addrs.

               b).IP & physical addrs.

               c).IP & MAC

              d). IP & communicating addrs

9.What is smtp?

              a).protocol on LAN

              b).protocol for email over internet

              c).protocol for retrieving email fom server on lan

              d). software allows user view HTML documents

10.Primary rate interface of isdn used in india correspond to

             a) 2B+D16 structure at 192 Usps

             b).23B+D64 structure at 1.544Mbps

             c). 30B+2D64 structure at 2.048Mbps

             d).23B+D64 structure at 1.544Mbps

e).2B+D16 structure at 144Usps

Ericsson Interview Questions paper - 3

You have 5 jars of pills. Each pill weighs 10 gram, except for contaminated pills contained in one jar, where each pill weighs 9 gm. Given a scale, how could you tell which jar had the contaminated pills in just one measurement? 

ANS. 1. Mark the jars with numbers 1, 2, 3, 4, and 5. 2. Take 1 pill from jar 1, take 2 pills from jar 2, take 3 pills from jar 3, take 4 pills from jar 4 and take 5 pills from jar 5. 3. Put all of them on the scale at once and take the measurement. 4. Now, subtract the measurement from 150 ( 1*10 + 2*10 + 3*10 + 4*10 + 5*10) 5. The result will give you the jar number which has contaminated pill.

In a tournament there are 20 flag poles equidistant from each other. each runner starts from the first flag. In 24 sec the runner reaches the 12th flag. How much it will take him to complete the 20th flag. 

ans. (24/11)*19

At 6'o clock clock ticks 6 times. The time between first and last ticks was 30sec. How much time it takes at 12'o clock. 

Ans. 66 sec. 2 marks.

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. 

Ans. x x x x-4 x-4 x-4 3x-12 = x x= 6 ans is 18 2 marks

A ship went on a voyage after 180 miles a plane started with 10 times speed that of the ship. Find the distance when they meet from starting point. 

Ans. 180 + (x/10) = x x = 20 ans is 180+20=200miles. 2 marks

There N stations on a railroad. After adding x stations 46 additional tickets have to be printed. Find N and X. 

Ans. let N(N-1) = t; (N+x)(N+x-1) = t+46; trail and error method x=2 and N=11 4 marks

A beggar collects cigarette stubs and makes one full cigarette with every 7 stubs. Once he gets 49 stubs . How many cigarettes can he smoke totally.

Ans. 8

1000000000 can be written as a product of two factors neither of them containing zeros

Ans 2 power 9 x 5 power 9

Light glows for every 13 seconds . How many times did it between 1:57:58 and 3:20:47 am

Ans : 383 + 1 = 384

A person spending out 1/3 for cloths , 1/5 of the remaining for food and 1/4 of the remaining for travelled is left with Rs 100/- . How he had in the beginning ?

Ans RS 250