50.Falsely operating the signalingequipment with speech energy.a. Talk-downb. Phone-phreakingc. Error d. All of the above51.The bandwidth of one Dchannel isa. 16 kbpsb. 64 kbpsc. 56 kbpsd. 128 kbpsOthertermusedforBroadband Wireless Access.52.What is the phase relationshipof the signals that feed the Vantenna?53.Which T-carrier system carries672PCM-encodedvoicechannels?54.In a PSTN, End Offices are ofwhich class?For a receiver with IF=455kHz, RF=630 kHz and localoscillator frequency of 1085kHz, determine the imagefrequency.c. Class 3d. Class 555.Spacecraft design whereby themain body of the satellite isspun to provide altitudestabilization, and the antennaassembly is despun by meansof a motor and bearing systemin order to continually directthe antenna earthward.To permit the correct selectionof 1 out of 2048 equal-probability events, how manybits are required?56.The transmit and receivesignals must be in differentfrequency band.Downstream speeds of ADSLtypically range from a. 64 kbps to 1.5 Mbpsb. 56 kbps to 8 Mbpsc. 768 kbps to 9 Mbpsd. 128 kbps to 2 Mbps65.The line encoding used inSTS-1.57.A Japanese mobile technologythat uses a 25KHz carrier andutilizes FDMA to separatedifferent calls from each other.A type of data from GPS whichsends coarse time informationalong with status informationabout the satellites.58.How many bits of data do GPStransmits?a. 36,000b. 37,500c. 40,000d. 45,50059.A Wi-Fi hotspot is called60.Whatisthecommonnavigational aids present onaircraft panels?61.
The 25-MHz bandwidth usedby GSM is divided into howmany channels.d. 30062.For a receiver with IF=455kHz, RF=630 kHz and localoscillator frequency of 1085kHz, determine the imagefrequency.63.
To permit the correct selection
of 1 out of 2048 equal-
probability events, how many
bits are required?
59c. 11d. 1664.Downstream speeds of ADSLtypically range from a. 64 kbps to 1.5 Mbpsb. 56 kbps to 8 Mbpsc. 768 kbps to 9 Mbpsd. 128 kbps to 2 Mbps65.The line encoding used inSTS-1.66.A type of data from GPS whichsends coarse time informationalong with status informationabout the satellites.a. Ephemeris b. Almanac c. Navigation messaged. Code 67.The crypto variable stored inthe SIM card is called68.
Broadband Wireless Access.