Description (TCO 6) The GSM network is made up of all the following except which one? (TCO 6) The core element of the GSM network subsystem is the mobile switching center (MSC). Which of the following is not considered to be a database that supports MSC? (TCO 6) Spatial multiplexing requires multiple transmitting and receiving antennas in a configuration known as which of the following? (TCO 6) Which of the following IEEE standards describes Wi-Fi? (TCO 6) Direct sequence spread spectrum (DSSS) is obtained by which of the following? (TCO 6) The version of orthogonal frequency division multiplexing (OFDM) for WiMAX is referred to as which of the following?