You are running a packet sniffer on a network and see a packet containing a long string of "0x90 0x90 0x90 0x90...." in the middle of it traveling to an x86-based machine as a target. This could be indicative of what activity being attempted? 當(dāng)你使用數(shù)據(jù)包嗅探工具查看到一個把X86機(jī)器作為目標(biāo)的的傳輸數(shù)據(jù)中包括"0x90 0x90 0x90 0x90...."這樣的一個長字符串時，意味著進(jìn)行以下哪項活動？（）