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LPI 202-450 Practice Test - Questions Answers

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List of questions

Question 1

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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 tem

Question 2

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

Question 3

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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.)

Question 4

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

Question 5

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

Question 6

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What option in the client configuration file would tell OpenVPN to use a dynamic source port when making a connection to a peer?

Question 7

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Which Linux user is used by vsftpd to perform file system operations for anonymous FTP users?

Question 8

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Which of the following sshd configuration should be set to no in order to fully disable password based logins? (Choose two.)

Question 9

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When the default policy for the netfilter INPUT chain is set to DROP, why should a rule allowing traffic to localhost exist?

Question 10

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FILL BLANK What command creates a SSH key pair? (Specify ONLY the command without any path or parameters)

Related questions

Which of the following commands can be used to connect and interact with remote TCP network services? (Choose two.)

In the main Postfix configuration file, how are service definitions continued on the next line?

FILL BLANK What command creates a SSH key pair? (Specify ONLY the command without any path or parameters)

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.)

Select the alternative that shows the correct way to disable a user login for all users except root.

Which of the following statements allow the logical combinations of conditions in Sieve filters? (Choose two.)

A zone file contains the following lines: and is included in the BIND configuration using this configuration stanza: Which problem is contained in this configuration?

After running ssh-keygen and accepting the default values, which of the following files are changed or created? (Choose two.)

To which destination will a route appear in the Linux routing table after activating IPv6 on a router's network interface, even when no global IPv6 addresses have been assigned to the interface?

The Samba configuration file contains the following lines: A workstation is on the wired network with an IP address of 192.168.1.177 but is unable to access the Samba server. A wireless laptop with an IP address 192.168.2.93 can access the Samba server. Additional trouble shooting shows that almost every machine on the wired network is unable to access the Samba server. Which alternate host allow declaration will permit wired workstations to connect to the Samba server without denying access to anyone else?

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?

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

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Question 2

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

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

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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.)

Protocol 2, 1

PermitEmptyPasswords no

Port 22

PermitRootLogin yes

IgnoreRhosts yes

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Question 4

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

-sO

-sZ

-sT

-sU

-sS

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Question 5

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

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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Question 6

What option in the client configuration file would tell OpenVPN to use a dynamic source port when making a connection to a peer?

src-port

remote

source-port

nobind

dynamic-bind

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Question 7

Which Linux user is used by vsftpd to perform file system operations for anonymous FTP users?

The Linux user which runs the vsftpd process

The Linux user that owns the root FTP directory served by vsftpd

The Linux user with the same user name that was used to anonymously log into the FTP server

The Linux user root, but vsftpd grants access to anonymous users only to globally read-/writeable files

The Linux user specified in the configuration option ftp_username

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Question 8

Which of the following sshd configuration should be set to no in order to fully disable password based logins? (Choose two.)

PAMAuthentication

ChallengegeResponseAuthentication

PermitPlaintextLogin

UsePasswords

PasswordAuthentication

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Question 9

When the default policy for the netfilter INPUT chain is set to DROP, why should a rule allowing traffic to localhost exist?

All traffic to localhost must always be allowed

It doesn't matter; netfilter never affects packets addressed to localhost

Some applications use the localhost interface to communicate with other applications

syslogd receives messages on localhost

The iptables command communicates with the netfilter management daemon netfilterd on localhost to create and change packet filter rules

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Question 10

FILL BLANK

What command creates a SSH key pair? (Specify ONLY the command without any path or parameters)

ssh-keygen

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Total 119 questions

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