Top Tips for Passing the LPI 102-400 Exam on Your First Try

Questions 21

Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Choose THREE correct answers.)

Options:

127.0.0.0/8

10.0.0.0/8

169.255.0.0/16

172.16.0.0/12

192.168.0.0/16

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Questions 22

What is true regarding TCP port 23?

Options:

Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.

Port 23 is the well known port for the SSH service which provides secure logins.

Port 23 is the well known port for the rlogin service which is SSL secured by default.

Port 23 is the well known port for the system login services which are encrypted when the user runs the starttls command in his login shell.

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Questions 23

How many IP-addresses can be used for unique hosts inside the IPv4 subnet 192.168.2.128/28? (Specify the number only without any additional information.)

Options:

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Questions 24

What is the purpose of the nsswitch.conf file?

Options:

It is used to configure where the C library looks for system information such as host names and user passwords.

It is used to configure network protocol port numbers such as for HTTP or SMTP.

It is used to configure LDAP authentication services for the local system.

It is used to configure which network services will be turned on during the next system boot.

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Questions 25

Which directory holds the files that configure the xinetd service when using several configuration files instead of an integrated configuration file? (Specify the full path to the directory.)

Options:

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Questions 26

Which of the following commands connects to the remote host example.com which has OpenSSH listening on TCP port 2222? (Choose TWO correct answers.)

Options:

ssh --port 2222 example.com

ssh -p 2222 example.com

ssh -o Port=2222 example.com

ssh -o GatewayPort=2222 example.com

ssh example.com:2222

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Questions 27

Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH?

Options:

sshd

ssh-agent

ssh-keygen

ssh-add

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Questions 28

Which of the following programs uses the hosts.allow file to perform its main task of checking for access control restrictions to system services?

Options:

tcpd

inetd

fingerd

mountd

xinetd

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Questions 29

The presence of what file will temporarily prevent all users except root from logging into the system? (Specify the full name of the file, including path.)

Options:

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Questions 30

Which file contains a set of services and hosts that will be allowed to connect to the server by going through a TCP Wrapper program such as tcpd? (Specify the full name of the file, including path.)https://lh3.googleusercontent.com/-5cd-clmKnbk/AAAAAAAAAAI/AAAAAAAAADM/-SXesH19Ido/s46-c-k-no/photo.jpg