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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, 1800 Mhz
800, 900, 1800, 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
Kỹ thuật truy nhập trong GSM?
TDMA
FDMA
CDMA
A và B
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điều chế trong GSM là
QPSK
64-QAM
GMSK
PSK
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Băng tần sử dụng trong 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 là:
890 - 915 Mhz
890 - 960 Mhz
935 - 960 Mhz
900 - 925 Mhz
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