300-300 Exam Dumps : LPIC-3: Mixed Environments - Exam 300 - version 3.0

The effective permissions of a file created with the permissions777can be calculated considering thecreate maskandforce create mode.

create mask = 711implies that the permission bits are ANDed with 0711, i.e., only the owner can read, write, and execute.

force create mode = 750implies that certain permission bits are always set, specifically 0750, i.e., read, write, and execute for the owner, and read and execute for the group.

Thecreate maskreduces the permissions to 0711, and thenforce create modeadds the 0750 mask to the result.

Original permission:777AND withcreate mask (711):711OR withforce create mode (750):751

Thus, the effective permission is751.

References:

Samba smb.conf man page - create mask

Remote Editing:

A. The registry can be edited remotely without logging into the server: One of the benefits of registry-based Samba configuration is that the registry can be editedremotely. This means administrators can make changes without needing to log into the server directly, facilitating easier and more flexible management.

Improved Startup Time:

C. Server processes require less time to start because they do not have to parse the configuration file: Registry-based configurations can reduce startup time because the Samba server processes do not need to parse a potentially complexsmb.conffile. Instead, they access the configuration directly from the registry, which can be faster.

Immediate Effect of Configuration Changes:

D. Configuration changes become effective immediately without a daemon reload: Changes made in the registry are applied immediately and do not require a daemon reload. This can be very advantageous for administrators who need to make quick adjustments without interrupting the service.

References:

Samba documentation

Various Samba configuration tutorials and best practice guides

Pluggable Authentication Modules (PAM) provides a system of libraries that handle the authentication tasks of applications (services) on a Linux system. These libraries are loaded dynamically and can be configured in the/etc/pam.ddirectory or in/etc/pam.conf. The PAM modules are divided into four types:

auth (authentication):This module type is responsible for authenticating the user, setting up user credentials, and initiating a session.

account:This module type manages account policies such as password expiration, access restrictions, and checking user permissions.

password:This module type handles the updating of authentication tokens, such as passwords.

session:This module type manages tasks that need to be performed at the beginning and end of a session, like mounting directories or logging.

References

Linux PAM Documentation

Understanding PAM