Wireless Local Area Networks (WLANs), Wired Equivalent Privacy (WEP), WLAN Security attacks, Logical attacks, Attacks on WEP, MAC Address Spoofing, Denial of Service attack, Admission Controller (AC), Global Monitor (GM), Man-in-the-middle attack, Bad network design, Default AP configurations, Service Set Identifier (SSID).
Also, check blog posts at https://sanmati4.com for telecom related topics.