Unicom’s GSM dual-frequency network refers to:

Posted by: Pdfprep Category: H35-510-ENU Tags: , ,

Unicom’s GSM dual-frequency network refers to:
A . 800MHz and 1800MHz
B . 900MHz and 1900MHz
C . 900MHz and 1800MHz
D . 800MHz and 1900MHz

Answer: C

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