Ericsson Technical Interview Questions 1. How does a mobile phone works? 2. Explain Hands off in detail? ( All GSM involved here on whatever 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 binary 16. 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 4094
What is VSWR? what are waveguides and their types. What is Aloha? Shannon's information capacity theorem, Sampling theorem, antenna Question gain, types of antennae, GSM/CDMA comparison, modulation techniques, Superheterodyne receiver Voltage standing wave ratio ALOHA is a old ethernet or networking protocol sampling theorem:fs> 2fmax G=4piD/lambda square modulation tech:AM,FM,PM,QPSK,QAM,OFDM.. superheterodyne Reciever:its freq converter...or a frequency synthesizer ckt for conversion of frequencies
What is meant by high impedance state in digital electronics?
In tri state devices, used in digital circuits there is a third state beside logic 0 and logic one. That is called High Impedance state. By this state we mean that there will not be any change on output even by changing our input. THis is due high resistance offered by input circuit. So output get fixed in such 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/p pwr of BTS depends on no. of TRX and also no. of combiner used
Explain BTS configuration 4+2+2 bts configration 4+2+2 means there are 4 trx in the 1st sector then 2 in second sector
then 2 in the third sector What's the range of C/A? C/A >-9 dbm it is the logarithmic difference of Adjacent channel
frequencies. What is VSWR? what are waveguides and their types. What is Aloha? Shannon's information capacity theorem, Sampling theorem, antenna gain, types of antennae, GSM/CDMA comparison, modulation techniques, Superheterodyne receiver What's the range of C/A? why rxlevel is negative valued ??? what is sdh,pdh?how exactly the call get connected? what is SDH and PDH relate the differences between them?
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What's The Range Of C/A?
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Relaince
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what is the features of GSM Technology and CDMA technology Telecom BSS related ques: For cascaded 1800 BTS with master 900 BTS,if 900 master BTS is down for its own equipment fault,cascaded slave 1800 BTS gets down/stop carrying traffic without any fault as BCCH and other controllong channels are in master 900 BTS.Is there any technology/system to turn the slave 1800 BTS to a single 1800 BTS autometcally when 900 master BTS is down for its own equipment fault???It is possible to make the slave 1800 BTS single live BTS manually.But I want to know the autometic system/process.if there is any....if not available, how can we generate the system?? 3.Which type of fading cause serious distortion of modulated signal a)selective fading b)interference fading c)absorption fading d)polarization fading What is the ruturn loss? what is VSWR? Waht is polarization,explain verical and horizantal? What is the GSM fundamental? how can we increase back up of 300ah battery.can we connects one more 300ah parallel or series? what is the use of combiner in gsm phones what is integration,optimization of gsm corenetwork in practice?
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Yes Nokia Sieman Network
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Ericssom
