Which of the following tools is a Windows-based commercial wireless LAN analyzer for IEEE802.11b and supports all high level protocols such as TCP/IP, NetBEUI, and IPX?

Sam Spade is a Windows-based network investigation utility used for DNS lookups, WHOIS queries, and traceroute, not a wireless LAN analyzer.

Cheops-ng is a network management and host discovery tool used for mapping network topology, not a wireless LAN protocol analyzer.

AiroPeek (later rebranded as OmniPeek by WildPackets/Savvius) is a commercial wireless LAN analyzer specifically designed for IEEE 802.11b networks on Windows. It provides full protocol decode support for high-level protocols such as TCP/IP, NetBEUI, and IPX, making it the only tool in the list that matches all criteria in the question stem.

John the Ripper is a password auditing and cracking tool, not a wireless LAN analyzer or protocol capture utility.