Server Administrator L1 - Roles and Responsibilities
An L1 (Level 1) Server Administrator is responsible for basic troubleshooting, monitoring, and first-line support for server-related issues. Their role includes:
1. Monitoring & Maintenance
Monitoring server health, performance, and logs.
Ensuring servers are running optimally and reporting any abnormalities.
Performing routine maintenance tasks such as updates and patch installations.
2. Troubleshooting & Incident Management
Handling basic server issues like high CPU usage, memory spikes, or disk space issues.
Resolving common OS issues (Windows/Linux).
Escalating complex issues to L2 or L3 teams.
3. User Management & Access Control
Creating, modifying, and deleting user accounts.
Managing permissions and security groups.
Resetting passwords and handling access-related requests.
4. Backup & Recovery
Ensuring backup jobs are running successfully.
Assisting in data restoration when needed.
5. Security & Compliance
Applying security patches and updates.
Monitoring antivirus and firewall alerts.
Ensuring compliance with IT security policies.
6. Hardware & Software Support
Assisting with hardware troubleshooting (HDD failures, RAM issues, etc.).
Installing or uninstalling software and updates.
7. Documentation & Reporting
Maintaining server inventory and documentation.
Preparing incident reports and server performance logs.
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Interview Questions and Answers for L1 Server Admin
1. Basic Technical Questions
Q1: What is a server?
A: A server is a computer or system that provides resources, data, services, or programs to other devices, called clients, over a network.
Q2: What are the different types of servers?
A:
Web Server (e.g., Apache, IIS)
File Server (e.g., Windows File Server, NFS)
Database Server (e.g., MySQL, SQL Server)
Mail Server (e.g., Exchange, Postfix)
DNS Server (e.g., BIND, Windows DNS)
Q3: What are common server operating systems?
A: Windows Server (2019, 2022), Linux distributions (Ubuntu, CentOS, Red Hat).
Q4: What is Active Directory (AD)?
A: Active Directory is a directory service by Microsoft used for managing user accounts, permissions, and security policies in a Windows domain network.
Q5: What is DNS and why is it important?
A: DNS (Domain Name System) translates domain names (e.g., google.com) into IP addresses, allowing users to access websites and services easily.
2. Troubleshooting & Monitoring
Q6: How do you check server performance in Windows?
A: Using Task Manager, Performance Monitor, or Resource Monitor to check CPU, RAM, disk, and network usage.
Q7: How do you check running processes in Linux?
A: Using the top or ps aux command.
Q9: What would you do if a server is running slow?
A:
Check CPU and memory usage (top or Task Manager).
Identify high-resource-consuming processes.
Check disk space (df -h).
Restart unnecessary services.
Check logs for errors (/var/log in Linux, Event Viewer in Windows
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