
dm nth
Authored by Quang Anh Lê
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University
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70 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
GSM là viết tắt của
Global System for Mobile Technology
Global System for Mobile Communications
Global Shared Memory
General System for Mobile Communications
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tần số làm việc của hệ thống GSM là
800 và 1800 Mhz
800, 900, 1800 và 1900 Mhz
900, 1800, 1900 Mhz
900, 1800 MHz
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một kênh sóng mang GSM có độ rộng
200 KHz.
45 MHz.
200 MHz
35 MHz.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điều chế trong GSM là
QPSK
64QAM
GMSK
PSK
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kỹ thuật truy nhập trong GSM?
TDMA
FDMA
CDMA
A và B.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Băng tần sử dụng của P-GSM 900 đường lên là:
890-915 Mhz.
890-960 Mhz
935-960 Mhz.
900-925 Mhz
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Băng tần sử dụng của P-GSM 900 đường xuống:
890-915 Mhz.
890-960 Mhz
935-960 Mhz.
900-925 Mhz
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