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Question No 1

On a Linux router, packet forwarding for IPv4 has been enabled. After a reboot, the machine no longer forwards IP packets from other hosts. The command: echo 1 > /proc/sys/net/ipv4/ip_forward temporarily resolves this issue. Which one of the following options is the best way to ensure this setting is saved across system restarts?

Choose the Choices:

Add echo 1 > /proc/sys/net/ipv4/ip_forward to the root user login script

Add echo 1 > /proc/sys/net/ipv4/ip_forward to any user login script

In /etc/sysct1.conf change net.ipv4.ip_forward to 1

In /etc/rc.local add net.ipv4.ip_forward = 1

In /etc/sysconfig /iptables - config add ipv4.ip_forward = 1

Question No 2

What information can be found in the file specified by the status parameter in an OpenVPN server configuration file? (Choose two.)

Choose the Choices:

Errors and warnings generated by the openvpn daemon

Routing information

Statistical information regarding the currently running openvpn daemon

A list of currently connected clients

A history of all clients who have connected at some point

Question No 3

Which of the following lines in the sshd configuration file should, if present, be changed in order to increase the security of the server? (Choose two.)

Choose the Choices:

Protocol 2, 1

PermitEmptyPasswords no

Port 22

PermitRootLogin yes

IgnoreRhosts yes Answer: A,D

Question No 4

Which of the following nmap parameters scans a target for open TCP ports? (Choose two.)

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Question No 5

Which of the statements below are correct regarding the following commands, which are executed on a Linux router? (Choose two.)

Choose the Choices:

Packets with source or destination addresses from fe80::/64 will never occur in the FORWARD chain

The rules disable packet forwarding because network nodes always use addresses from fe80::/64 to identify routers in their routing tables

ip6tables returns an error for the second command because the affected network is already part of another rule

Both ip6tables commands complete without an error message or warning

The rules suppress any automatic configuration through router advertisements or DHCPv6

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