A. ping and arp B. lsattr and ifconfig C. netstat and iostat D. iptrace and tcpdump
A. It is a pseudo filesystem that maps processes and kernel data structures to corresponding files. B. It is a JFS mounted filesystem that provides an exact representation of what is happening to a proces at a single and discrete point of time. C. It is a JFS mounted filesystem that maps processes and read-only files related to these processes. D. It is a pseudo filesystem that contains data that represents the state of the parent processes (but not their threads) in a system.
A. foo ; lsps -s B. tprof -kx ; foo C. iostat ; foo ; iostat D. vmstat -s ; foo ; vmstat s