2G standards support Limited internet browsing Short messaging service Both (a and b) None of the above In the subscriber identity card (GSM system the authentication algorithm stored In the (RAM) In the EPROM In the ROM In the microprocessor The Dedicated control channels are Up direction only Down direction only Each of them are Up and Down direction Some of them are up and others are down The enhanced GSM 900 (EGSM 900) frequency range is 890MHz to 915MHz for down link and 935MHz to 960MHz for up link 935MHz to 960MHz for down link and 890MHz to 915MHz for up link 880MHz to 915MHz for down link and 925MHz to 960MHz for up link 925MHz to 960MHz for down link and 880MHz to 915MHz for up link