Ericsson Technical Interview Questions

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Er i csson technical i nter vi ew questions

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Ericsson technical interview questions

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Published on Oct 03, 2011

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Transcript 1. Ericsson Technical Interview How does a mobile phone works?2.5997 Explain Hands off in detail? ( All GSM involved here on whatever Top 5Questions1. telecommunication engineer in... by ninami11 views you answer )3. What is the difference between TCP/IP and SSL?4. What will happen if I type Ericsson.com?5. What will happen if I type Ericsson.com again?6. At a DNS server how will you get your desired IP address from the millions of IP addresses present there?7. What is the purpose of DNS?8. In DNS S stands for ---SERVICE,SPACE,SYSTEM?9. Explain all layers of TCP?10. Give a program in C to convert a decimal number to binary?11. What if the input inputted is negative?12. What if the number inputted is zero?13. What is a prime number?14. How do u check it?Give a better method??(if u keep a check of dividing from 2 to N-1)15. A conversion from Hexa Decimal to binary16. Explain TDM? Give diagram?17. Give demerits of FDM?18. What is a multiplexer? Whats is the purpose of using it?19. How will you get a 16:1 multiplexer from 2:1 multiplexer?Explain thoroughly?These are some questions of Ericsson Techincal interviews which my friends and me faced.Tip--ECE students appearing in Ericsson should not skip programming. Atleast it cost me my interview.how is the wave guide propagation pattern ??Ethernet Frame format? Explain STP and RSTP and how t oextend the vlans beyond 4094Question What is VSWR? what are waveguides and their types. What is Aloha? 2. Shannons information capacity theorem, Sampling theorem, antenna gain, types of antennae, GSM/CDMA comparison, modulation techniques, Superheterodyne receiverVoltage standing wave ratioALOHA is a old ethernet or networking protocolsampling theorem:fs> 2fmaxG=4piD/lambda Drive procedure by Anil Parmar 3226 views squaremodulation tech:AM,FM,PM,QPSK,QAM,OFDM..superheterodyne Reciever:its freq converter...or a frequencysynthesizer ckt for conversion of frequenciesWhat is meant by high impedance state in digital electronics?In tri state devices, used in digital circuits there is athird state beside logic http://www.slideshare.net/sethshivam75/ericsson-technical-interview-questions

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0 and logic one. That is calledHigh Impedance state.By this state we mean that there will not be any change onoutput even by changing our input. THis is due highresistance offered by input circuit. So output get fixed insuch cases.AKSHAY BISHT(NITian)Why the RSL of microwave link is in -ive?What is the total output power of an complete BTS, in dbm & watts.43dbm/20Wattb but this the output pwr of TRX So Total o/ppwr of BTS depends on no. of TRX and also no. of combiner usedExplain BTS configuration 4+2+2bts configration 4+2+2 means there are 4 trx in the 1st sectorthen 2 in second sectorthen 2 in the third sectorWhats the range of C/A?C/A >-9 dbmit is the logarithmic difference of Adjacent channelfrequencies.What is VSWR? what are waveguides and theirtypes. What is Aloha? Shannons informationcapacity theorem, Sampling theorem, antenna gain, 1 204types of antennae, GSM/CDMA comparison,modulation techniques, Superheterodyne receiverWhats the range of C/A? 2 595 Whats Thewhy rxlevel is negative valued ??? Range Of C/ 2 714 A?what is sdh,pdh?how exactly the call get Relaince 7 1797connected?what is SDH and PDH relate the differences 2 3383between them?what is the features of GSM Technology and 4 2207CDMA technology 3. Telecom BSS related ques: For cascaded 1800BTS with master 900 BTS,if 900 master BTS isdown for its own equipment fault,cascaded slave1800 BTS gets down/stop carrying traffic withoutany fault as BCCH and other controllong channelsare in master 900 BTS.Is there any Yes Nokiatechnology/system to turn the slave 1800 BTS to a Sieman 1 3318single 1800 BTS autometcally when 900 master NetworkBTS is down for its Umts interview qa by syedusama7 8805 views own equipment fault???It ispossi ble to make the slave 1800 BTS single liveBTS manually.But I want to know the autometicsystem/process.if there is any....if not available,how can we generate the system??3.Which type of fading cause serious distortion ofmodulated signal a)selective fading b)interference Hcl 7 2887fading c )absorption fading d)polarization fadingWhat is the ruturn loss? 4 1595what is VSWR? Ericssom 3 6432Waht is polarization,explain verical and 6 2774horizantal?What is the GSM fundamental? 7 3548how can we increase back up of 300ah battery.can 3 1701we connects one more 300ah parallel or series?what is the use of combiner in gsm phones 7 2456what is integration,optimization of gsmcorenetwork in practice?

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