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Home LPI 202-450

LPI 202-450 Exam Practice Questions (P. 1)

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Question #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?
  1. A
    Add echo 1 > /proc/sys/net/ipv4/ip_forward to the root user login script
  2. B
    Add echo 1 > /proc/sys/net/ipv4/ip_forward to any user login script
  3. C
    In /etc/sysct1.conf change net.ipv4.ip_forward to 1
  4. D
    In /etc/rc.local add net.ipv4.ip_forward = 1
  5. E
    In /etc/sysconfig/iptables-config add ipv4.ip_forward = 1

Correct Answer:
C

Question #2
What information can be found in the file specified by the status parameter in an OpenVPN server configuration file? (Choose two.)
  1. A
    Errors and warnings generated by the openvpn daemon
  2. B
    Routing information
  3. C
    Statistical information regarding the currently running openvpn daemon
  4. D
    A list of currently connected clients
  5. E
    A history of all clients who have connected at some point

Correct Answer:
BD

Question #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.)
  1. A
    Protocol 2, 1
  2. B
    PermitEmptyPasswords no
  3. C
    Port 22
  4. D
    PermitRootLogin yes
  5. E
    IgnoreRhosts yes

Correct Answer:
AD

Question #4
Which of the following nmap parameters scans a target for open TCP ports? (Choose two.)
  1. A
    -sO
  2. B
    -sZ
  3. C
    -sT
  4. D
    -sU
  5. E
    -sS

Correct Answer:
CE

Question #5
Which of the statements below are correct regarding the following commands, which are executed on a Linux router? (Choose two.)

  1. A
    Packets with source or destination addresses from fe80::/64 will never occur in the FORWARD chain
  2. B
    The rules disable packet forwarding because network nodes always use addresses from fe80::/64 to identify routers in their routing tables
  3. C
    ip6tables returns an error for the second command because the affected network is already part of another rule
  4. D
    Both ip6tables commands complete without an error message or warning
  5. E
    The rules suppress any automatic configuration through router advertisements or DHCPv6

Correct Answer:
DE

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