Study tips 642-742

What is the main difference between the Cisco Unified Wireless IP Phone 7921G and the Cisco Unified Wireless IP Phone 7925G?

Which of these authentication and encryption combinations would be considered the most secure?

Which of these statements best describes jitter?

what is the first step that a wireless phone must do?

Which two statements best describe video conferencing?

What is the minimum overhead (header plus FCS) added by 802.11 (no encryption, no WMM) between a wireless client and an AP?

Which four statements describe attributes of interactive video?

How much overhead is added by CAPWAP encapsulation?

Which two applications benefit from upgrading to 802.11n?

Which three of these options describe frames sent from the AP to wireless clients?