Exam Vouchers: Linux Professional Institute LPIC-3 Exam 300 Mixed Environments (300-300)

The LPIC-3 certification is the culmination of the multi-level professional certification program of the Linux Professional Institute (LPI). LPIC-3 is designed for the enterprise-level Linux professional and represents the highest level of professional, distribution-neutral Linux certification within the industry. Four separate LPIC-3 specialty certifications are available. Passing any one of the four exams will grant the LPIC-3 certification for that specialty.

The LPIC-3 Mixed Environments certification covers the administration of Linux systems enterprise-wide in mixed environments.

Current version: 3.0

Updated June 2026

This exam validates that the candidate can:

• Administer Linux systems in mixed Windows–Linux environments
• Configure and manage Samba servers and services
• Integrate Linux systems with Active Directory domains
• Manage users, groups, and authentication across platforms
• Configure and secure file and print sharing services
• Implement and manage Linux and Windows clients
• Work with identity management solutions (FreeIPA, LDAP)
• Troubleshoot Samba, AD integration, and client issues

1- Samba Basics

• Samba Concepts and Architecture (weight: 2):
• Understand the roles of the various Samba daemons and components
• Understand key issues regarding heterogeneous networks
• Understand the networking services used with SMB/CIFS and Active Directory, including their ports
• Understand the major features of SMB protocol versions 1.0, 2.0, 2.1 and 3.0
• Understand of Samba 3 and Samba 4 differences
• Awareness of Samba VFS modules
• Awareness of Samba Clustering and CTDB
• Samba Configuration (weight: 4):
• Manage Samba server file-based configuration
• Manage of Samba server registry-based configuration
• Manage of Samba configuration parameters and variables
• Understand Samba server roles and security modes
• Configure Samba to use TLS
• Check the validity of a Samba configuration
• Troubleshoot and debug configuration problems with Samba
• Understand Windows tools used to configure a Samba Server
• Regular Samba Maintenance (weight: 2):
• Start and stop Samba services
• Monitor Samba daemons
• Backup and restore TDB databases
• Backup and restore Active Directory Domain Controllers
• Troubleshooting Samba (weight: 3):
• Configure Samba logging
• Analyze Samba log files
• Query and modify password databases
• Understand TDB file structure
• Access and modify Samba LDAP directories
• Confirm the integrity of a domain controller database

2- Samba and Active Directory Domains

• Samba as Active Directory Domain Controller (weight: 5):
• Understand Active Directory concepts and architecture
• Install and configure Samba as an Active Directory Domain Controller
• Manage an Active Directory domain
• Active Directory Name Resolution (weight: 2):
• Configure DNS for Active Directory
• Understand name resolution in Active Directory environments
• Active Directory User Management (weight: 4):
• Manage Active Directory users and groups
• Manage authentication and authorization in Active Directory
• Samba Domain Membership (weight: 4):
• Join a Samba server to an Active Directory domain
• Configure domain membership
• Manage trust relationships
• Samba Local User Management (weight: 2):
• Manage local users in Samba
• Map local users to domain users

3- Samba Share Configuration

• File Share Configuration (weight: 4):
• Create and configure Samba file shares
• Manage share definitions
• File Share Security (weight: 3):
• Configure permissions and ACLs
• Configure authentication and access control
• DFS Share Configuration (weight: 1):
• Understand DFS concepts
• Configure DFS shares
• Print Share Configuration (weight: 2):
• Configure Samba print services
• Manage printers in Samba

4- Samba Client Configuration

• Linux Authentication Clients (weight: 5):
• Configure PAM for authentication
• Configure NSS for identity lookup
• Configure SSSD for centralized authentication
• Linux CIFS Clients (weight: 3):
• Mount SMB/CIFS shares
• Configure CIFS client utilities
• Windows Clients (weight: 3):
• Join Windows clients to domains
• Access Samba shares from Windows

5- Linux Identity Management and File Sharing

• FreeIPA Installation and Maintenance (weight: 2):
• Install and configure FreeIPA
• Maintain FreeIPA services
• FreeIPA Entity Management (weight: 4):
• Manage users, groups, and hosts
• Manage identity policies
• FreeIPA Active Directory Integration (weight: 2):
• Integrate FreeIPA with Active Directory
• Configure cross-domain authentication
• Network File System (weight: 3):
• Configure NFS shares
• Manage NFS clients and servers

The candidate must have an active LPIC-2 certification to receive the LPIC-3 certification