A network engineer is viewing the QBSS information in a packet sniff. Which two QBSS characteristics are crucial for successful troubleshooting? (Choose two.)

Information element number 1 is transmitted when client CAC is supported, not in WMM-only environments; misidentifying it as a WMM-only element leads to incorrect conclusions about the AP's CAC capabilities.

There is no QBSS Load information element number 3 defined for WMM-only operation in the IEEE 802.11e amendment or the WMM specification.

Information element number 2 is associated with WMM-only mode, not with client CAC support; when CAC is active, IE 1 is transmitted instead, so selecting IE 2 for CAC environments indicates a misidentification.

When client CAC (Call Admission Control) is supported, information element number 1 is the QBSS Load IE transmitted in beacons, conveying channel utilization and station count data that CAC-capable clients use to make admission decisions.

When only WMM (Wi-Fi Multimedia) is enabled without client CAC, information element number 2 is the QBSS Load IE sent in beacons, and a troubleshooter must recognize this specific IE number to correctly interpret the QoS load data present in the capture.