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66.

How can you check which libraries are being used and needed for the binary file /bin/vi?

Running the tool "ldd /bin/vi" will show you the shared libraries needed to run the binary application /bin/vi.

67.

You want to install a new PERL module, what is the correct way to do it?

PERL has its management console cpan that allows you to install new modules using the command "install Group::Module".

68.

How can you enable jumbo-frame (9000) on a network interface eth0 in Linux?

You can use ifconfig eth0 mtu 9000, but in order to make it permanent you will need to add it to the ifcfg-eth0 file.

69.

Explain the following command: "iptables -A OUTPUT -p icmp --icmp-type echo-request -j DROP"

The command will add a rule to the iptables that will drop all PING requests to the server.

70.

What does the wine application does on Linux system?

The wine application allows you to run windows applications on a Linux server/workstation.