Iptables is the userspace command line program used to
configure the Linux 2.4.x and 2.6.x IPv4 packet filtering
ruleset. Iptables allows administrators to configure the
operating system so that it allows applications and clients
to connect through the network and stop unwanted
applications and clients from communicating and corrupting
the operating system.
It is not specific to Redhat. It is available in all linux
2.4.x and 2.6.x kernels.
What is /proc/[PID]/cwd? a) symbolic link to current directory of the process b) regular file containing the information about the current status of the process c) directory containing various sub-directories d) none of the mentioned
Which one of the following is a sym-link to the root path as seen by the process? a) /proc/[PID]/root b) /proc/[PID]/path c) both (a) and (b) d) none of the mentioned
The directory /proc/[PID]/tasks contains a) hard links to any task that have been started by this process b) files that containing tasks that have been started by this process c) sub-direcories of various tasks d) none of the mentioned
The buddy algorithm handles the a) memory fragmentation b) DHCP server c) routing d) none of the mentioned
The list of available frame buffers are stored in a) /proc/[PID]/fb b) /proc/fb c) /proc/etc/fb d) none of the mentioned
The file /proc/swaps contains the a) list of active swap partitions b) sizes of the swap partitions c) priorities of the swap partitions d) all of the mentioned
/proc/tty contains the information about a) current terminal b) all terminals c) both (a) and (b) d) none of the mentioned
The command "cd /proc/10/cwd" provides the a) current working directory of process having PID 10 b) current status of the process having PID 10 c) current version of the filesystem d) none of the mentioned
Which one of the following command will print the environment of process 1? a) cat /proc/1/environ b) cat /proc/bin/1/env c) cat /proc/1/var/env d) none of the mentioned
The file /proc/[PID]/mountinfo contains a) major minor numbers of device files b) root of the mount within the filesystem c) mount point relative to the process's root d) all of the mentioned
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