侵入テスターが未知の環境テスト中に ping -A コマンドを実行したところ、128 TTL パケットが返されました。次の OS のうち、このタイプのパケットを返す可能性が最も高いのはどれですか?
正解:A
The ping -A command sends an ICMP echo request with a specified TTL value and displays the response. The TTL value indicates how many hops the packet can traverse before being discarded. Different OSs have different default TTL values for their packets. Windows uses 128, Apple uses 64, Linux uses 64 or 255, and Android uses 64. Therefore, a packet with a TTL of 128 is most likely from a Windows OS. Reference: https://www.freecodecamp.org/news/how-to-identify-basic-internet-problems-with-ping/