IT Learning Directory (ITLDIR) for System Administrator

  In my previous roles, particularly as a  Technical Support Analyst  at  Moodys  and a  Senior Executive – IT  at  Manpowergroup , I gained extensive experience in ITSM functions. I managed incidents, requests, and problems using the  Service Now (SNOW)  ticketing tool, ensuring timely resolution and adherence to SLAs. This involved tracking tickets, escalating issues when necessary, and communicating with stakeholders to drive corrective actions. My hands-on experience with ITIL best practices has equipped me to lead teams effectively and implement process improvements. For example, I regularly monitored SLA performance and analyzed breaches, which helped in identifying areas for improvement. In my role at  SAP Labs , I also had the opportunity to mentor junior team members, overseeing their training and performance management. Overall, my background in ITSM aligns well with the responsibilities of the  Operations Manager ...

  In my over 8 years of experience in IT infrastructure and systems administration, I've worked extensively with Active Directory (AD) across multiple roles, from on-premises deployments to hybrid environments integrated with Azure. It's been a cornerstone for managing user identities, security, and resource access in enterprise settings. In my most recent role as a Senior Systems Administrator at [Company Name], I led the management of an AD environment supporting over 5,000 users in a multi-domain forest. I handled day-to-day tasks like user provisioning and deprovisioning using tools such as Active Directory Users and Computers (ADUC) and PowerShell scripting. For instance, I automated onboarding processes with scripts that created user accounts, assigned group memberships, and applied fine-grained password policies—reducing manual effort by 40% and minimizing errors. Earlier, as an IT Support Engineer at [Previous Company], I focused on troubleshooting and security. I con...

  In my over 8 years of experience in IT infrastructure and systems administration, I've worked extensively with Active Directory (AD) across multiple roles, from on-premises deployments to hybrid environments integrated with Azure. It's been a cornerstone for managing user identities, security, and resource access in enterprise settings. In my most recent role as a Senior Systems Administrator at [Company Name], I led the management of an AD environment supporting over 5,000 users in a multi-domain forest. I handled day-to-day tasks like user provisioning and deprovisioning using tools such as Active Directory Users and Computers (ADUC) and PowerShell scripting. For instance, I automated onboarding processes with scripts that created user accounts, assigned group memberships, and applied fine-grained password policies—reducing manual effort by 40% and minimizing errors. Earlier, as an IT Support Engineer at [Previous Company], I focused on troubleshooting and security. I con...

  In my over 8 years of experience in IT infrastructure and systems administration, I've worked extensively with Active Directory (AD) across multiple roles, from on-premises deployments to hybrid environments integrated with Azure. It's been a cornerstone for managing user identities, security, and resource access in enterprise settings. In my most recent role as a Senior Systems Administrator at [Company Name], I led the management of an AD environment supporting over 5,000 users in a multi-domain forest. I handled day-to-day tasks like user provisioning and deprovisioning using tools such as Active Directory Users and Computers (ADUC) and PowerShell scripting. For instance, I automated onboarding processes with scripts that created user accounts, assigned group memberships, and applied fine-grained password policies—reducing manual effort by 40% and minimizing errors. Earlier, as an IT Support Engineer at [Previous Company], I focused on troubleshooting and security. I con...

To become a successful system administrator, you should acquire knowledge across a broad spectrum of technical, operational, and managerial domains. Here's a categorized list of the knowledge contents: 1. Operating Systems System Imaging and Deployment Windows: Active Directory, Group Policy, PowerShell, Windows Server roles (e.g., DHCP, DNS, IIS). Linux/Unix: File systems (ext4, xfs, etc.), shell scripting, systemd, cron jobs, package management (apt, yum, rpm), networking configuration, SELinux, firewalls (iptables/nftables). MacOS (if applicable): System management tools, Apple Configurator, integration with Active Directory. 2. Networking Basics: TCP/IP, DNS, DHCP, NAT, VPNs. Hardware: Configuration and troubleshooting of routers, switches, access points. Protocols: HTTP/HTTPS, FTP, SMTP, SNMP, NTP. Advanced Networking: VLANs, subnetting, firewalls, load balancers, network security. Wi-Fi Management: Access point configuration, wireless standards (802.11ac/ax). Network ...

To become a successful system administrator, you should acquire knowledge across a broad spectrum of technical, operational, and managerial domains. Here's a categorized list of the knowledge contents: 1. Operating Systems System Imaging and Deployment Windows: Active Directory, Group Policy, PowerShell, Windows Server roles (e.g., DHCP, DNS, IIS). Linux/Unix: File systems (ext4, xfs, etc.), shell scripting, systemd, cron jobs, package management (apt, yum, rpm), networking configuration, SELinux, firewalls (iptables/nftables). MacOS (if applicable): System management tools, Apple Configurator, integration with Active Directory. 2. Networking Basics: TCP/IP, DNS, DHCP, NAT, VPNs. Hardware: Configuration and troubleshooting of routers, switches, access points. Protocols: HTTP/HTTPS, FTP, SMTP, SNMP, NTP. Advanced Networking: VLANs, subnetting, firewalls, load balancers, network security. Wi-Fi Management: Access point configuration, wireless standards (802.11ac/ax). Network ...

To become a successful system administrator, you should acquire knowledge across a broad spectrum of technical, operational, and managerial domains. Here's a categorized list of the knowledge contents: 1. Operating Systems System Imaging and Deployment Windows: Active Directory, Group Policy, PowerShell, Windows Server roles (e.g., DHCP, DNS, IIS). Linux/Unix: File systems (ext4, xfs, etc.), shell scripting, systemd, cron jobs, package management (apt, yum, rpm), networking configuration, SELinux, firewalls (iptables/nftables). MacOS (if applicable): System management tools, Apple Configurator, integration with Active Directory. 2. Networking Basics: TCP/IP, DNS, DHCP, NAT, VPNs. Hardware: Configuration and troubleshooting of routers, switches, access points. Protocols: HTTP/HTTPS, FTP, SMTP, SNMP, NTP. Advanced Networking: VLANs, subnetting, firewalls, load balancers, network security. Wi-Fi Management: Access point configuration, wireless standards (802.11ac/ax). Network ...