I need this ASAP!!!

Question 1: Choose the best answer in each question 1. IS-95 uses th e satellite system for synchronization. A) Iridium B) GPS .C) Teledesic . D) none of the above 2. handheld terminals. satellites can provide direct universal voice and data communications for . C) Iridium A) Teledesic B) GPS D) none of the above 3. is a second-generation cellular phone system based on CDMA and DSSS. A) IS-95 B) D-AMPS .C) GSM D) none of the above 4. GSM allows a reuse factor of . A) 7 *) 3 5. In the third generation of cellular phones, uses CDMA2000 .A) IMT-MC B) IMT-TC .C) IMT-SC .D) IMT-DS 6. Iridium satellites are satellites .A) MEO .C) GEO B) LEO D) none of the above 7. In an IS-95 system, the frequency-reuse factor is normally.. C)3 8. is a second-generation cellular phone system used in Europe .A) IS-95 . B) GSM .C) .D) D-AMPS none of the above 9. A GEO is at the orbit and revolves in phase with Earth. .A) inclined B) polar .C) equatorial .D) none of the above 10 is a first-generation cellular phone system .A) GSM B) AMPS .C) .D) D-AMPS none of the above is a digital version of AMPS. .A) GSM .B) IS-95 .C) D-AMPS .D) none of the above 12. In the third generation of cellular phones, uses TDMA .A) IMT-TC B) IMT-SC .C) IMT-MC .D) IMT-DS 13. In a same time handoff, a mobile station can communicate with two base stations at the .A) soft B) hard C) .D) medium none of the above 14. IS-95 uses the ISM .A) 800-MHz .B) 900-MHz .C) 1900-MHz . D) either (a) or (c) 15. satellites provide time and location information for vehicles and ships. .A) Teledesic .B) GPS .C) Iridium .D) none of the above s (are)orbit(s) for a GEO satellite C) many .D) none of the above A) two .B) one 17. GPS satellites are .A) MEO satellites. .C) GEO .D) none of the above B) LEO 18. The period of a satellite, the time required for a satellite to make a complete trip around the Earth, is determined by law .A) Ohm's .C) Keplers .D) none of the above B) Newton's 19. LEO satelites are normally below an altitude of km. .A) 3000 .B) 2000 .C) .D) 1000 none of the above 20 is a second-generation cellular phone system. .A) GSM .B) AMPS .C) .D) D-AMPS none of the above 21. In AMPS, each band is divided into channels .A) 1000 .B) 900 .C) 800 .D none of the above 22. In the third generation of cellular phones uses W-CDMA .A) IMT-TC B) IMT-DS .C) IMT-SC .D) IMT-MC 23. In a handoff, a mobile station only communicates with one base station. .C) hard . D) none of the above A) soft .B) medium 24. AMPS uses to divide each 25-MHz band into channels A) TDMA .B) FDMA .C) .D) CDMA none of the above is based on a principle called trilateration. .A) Iridium .C) .D) GPS none of the above B) Teledesic 26. satellites will provide universal broadband Internet access. A) Teledesic B) GPS .C) .D) Iridium none of the above 27. The cellular phone system will provide universal personal communication. .A) second-generation .B) third-generation C) first-generation D) none of the above 28. AMPS has a frequency reuse factor of 29. AMPS operates in the ISM band. .A) 1800-MHz .B) 900-MHz .C) 800-MHz . D) none of the above 30. Low-Earth-orbit (LEO) satellites have orbits. .A) polar .B) inclined .C) .D) equatorial none of the above 31. The signal from a satellite is normally aimed at a specific area called the .C) .D) path none of the above .A) effect B) footprint 32.is an analog cellular phone system using FDMA .A) GSM B) AMPS .C) .D) D-AMPS none of the above 33. Teledesic satellites are .A) MEO .B) LEO .C) .D) GEO none of the above 34. GSM is a digital cellular phone system using .A) FDMA .B) CDMA .C) TDMA .D) both (a) and (c) 35. In the third generation of cellular phones,uses a combination of W-CDMA and TDMA .A) IMT-TC B) IMT-SC .C) IMT-DS 36. MEO satellites are located at altitudes between km. .A) 5000 and 10,000 B) 5000 and 15,000 .C) .D) 3000 and 5000 none of the above 37. IS-95 is based on .A) DSSS .B) FDMA .C) CDMA .D) all of the above 38. D-AMPS usesto divide each 25-MHz band into channels. .A) FDMA .B) CDMA Page 4 of 5 .C) TDMA D) both (a) and (c) 39. Teledesic satellites orbits at an altitude of .A) 750 KM B) 1350 KM .C) 3600 KM D) None of the above 40. According to satellite signals how many satellites are there in geosynchronous orbit? . A) 20 ) 60 . C) 402 D) 1500