Scenario-Based Linux Interview Questions [2025]

Linux Administration

1. What would you do if a Linux server fails to boot after a system update?

• Check GRUB configuration
• Review kernel logs
• Boot to previous kernel
• Verify hardware integrity
  A failed boot disrupts critical services. Checking bootloader settings and logs identifies issues, while reverting to a stable kernel restores functionality, a core skill for maintaining enterprise Linux systems in high-availability environments.

2. How would you configure a Linux server to join an Active Directory domain?

To join an Active Directory domain, install realmd and sssd, configure realm settings, and authenticate with domain credentials. This enables centralized user management, a vital task for Linux admins in enterprise environments with Windows integration.

3. Why would a Linux server experience high disk I/O during peak hours?

• Resource-intensive applications
• Insufficient caching
• Misconfigured storage
  High disk I/O slows performance.
  Monitoring with iostat pinpoints bottlenecks.
  Optimizing storage configurations ensures efficiency, a key skill for system reliability.

4. When would you use systemd over init for service management?

Systemd is used for modern service management due to its dependency handling and faster boot times.

• Configured in /etc/systemd/system
• Monitors with systemctl
• Enhances automation, a core Linux administration principle

5. Where would you configure kernel parameters for a Linux server?

sudo nano /etc/sysctl.conf
sudo sysctl -p

Edit /etc/sysctl.conf to tune parameters like net.core.somaxconn. Apply changes with sysctl -p. This optimizes performance, a critical task for managing Linux servers in production environments.

6. Who would manage Linux user accounts in a large-scale deployment, and why?

Admins with elevated privileges handle user accounts to ensure secure access and compliance. They configure authentication, monitor permissions, and audit logs. This maintains system security and operational efficiency in enterprise Linux environments with numerous users.

7. Which command monitors memory usage on a Linux server?

• free -m
• Displays memory stats
• Identifies leaks
  Memory monitoring prevents performance issues.
  This command is vital for maintaining Linux system stability under heavy workloads.

8. What would you do if a Linux filesystem becomes read-only unexpectedly?

If a filesystem turns read-only, remount it, run fsck, and check logs. Read-only states block updates.

• Use mount -o remount,rw /
• Run fsck /dev/sda1
• Review /var/log/syslog
  This restores functionality in critical systems.

9. How would you set up a Linux server as a web server?

sudo apt install apache2
sudo systemctl enable apache2
sudo nano /etc/apache2/sites-available/000-default.conf

Install Apache, enable the service, and configure virtual hosts. This hosts web applications, a core task for admins managing Linux servers in production environments.

10. Why would a Linux server fail to mount a remote filesystem?

• Incorrect NFS settings
• Network connectivity issues
• Firewall restrictions
  Mount failures block data access.
  Checking /etc/fstab identifies errors.
  Fixing network settings restores connectivity, a critical skill for distributed systems.

11. When would you use LVM for disk management on a Linux server?

LVM is ideal for dynamic storage management, enabling resizing and snapshots.

• Configured with lvcreate
• Monitors with lvs
• Ensures flexibility, a core Linux principle
  This supports scalable storage in enterprise environments.

12. Where would you store custom systemd service files on a Linux server?

Custom systemd service files are stored in /etc/systemd/system for centralized management. Reload with systemctl daemon-reload to apply changes. This ensures reliable service automation, a vital task for Linux admins in production systems.

13. Who would configure a Linux server for high availability, and why?

• System architects
• Ensure uptime
• Support failover
  High availability prevents downtime. Architects configure clustering for reliability, a core skill for mission-critical Linux environments like e-commerce platforms.

14. Which command checks disk space usage on a Linux server?

df -h
# or
du -sh /path/*

Use df -h to check disk usage or du for specific directories. This prevents storage issues, a critical task for maintaining Linux server performance in enterprise settings.

15. What would you do if a Linux service fails to start after a reboot?

• Check service status
• Review logs
• Verify dependencies
  Service failures disrupt operations. Checking systemctl status and logs in /var/log resolves issues, a key task for ensuring uptime in production Linux systems.

16. How would you configure a Linux server for load balancing?

To set up load balancing, install HAProxy, configure backend servers, and enable the service. This distributes traffic, a core task for admins ensuring scalable and reliable Linux systems in high-traffic environments.

17. Why would a Linux server experience high CPU usage unexpectedly?

• Rogue processes
• Kernel bugs
• Overloaded services
  High CPU usage degrades performance.
  Monitoring with top identifies culprits.
  Optimizing processes ensures stability, a critical skill for system efficiency.

18. When would you use cron for scheduling tasks on a Linux server?

Cron schedules repetitive tasks like backups or updates for automation.

• Configured in crontab -e
• Monitors with crontab -l
• Ensures efficiency, a core Linux principle

19. Where would you check system logs for errors on a Linux server?

sudo tail -f /var/log/syslog
# or
sudo journalctl -xe

Check /var/log/syslog or use journalctl for error logs. This aids troubleshooting, a vital task for diagnosing issues in Linux servers under heavy workloads.

20. Who would back up a Linux server, and why?

Backup tasks fall to admins to prevent data loss and ensure recovery. They configure automated backups, verify integrity, and test restores. This safeguards critical data, a core skill for maintaining reliable Linux systems in enterprise environments.

21. Which command monitors network traffic on a Linux server?

• iftop
• Displays bandwidth usage
• Identifies bottlenecks
  Network monitoring optimizes performance.
  This command is essential for managing Linux server connectivity.

Automation and Scripting

22. What would you do if a Bash script fails to execute on a Linux server?

• Check syntax errors
• Verify permissions
• Debug with logs
  Script failures halt automation. Checking syntax and permissions with bash -n and chmod resolves issues, a key task for reliable scripting in Linux environments.

23. How would you automate package updates across Linux servers?

sudo apt install ansible
ansible all -m apt -a "update_cache=yes upgrade=yes"

Use Ansible to run apt updates across servers. This ensures security patches, a core task for admins automating Linux maintenance in large-scale deployments.

24. Why would a Python script crash on a Linux server?

• Missing dependencies
• Syntax errors
• Resource limits
  Script crashes disrupt automation.
  Debugging with pdb identifies issues.
  Installing dependencies ensures functionality, a critical skill for reliable scripting.

25. When would you use Ansible for Linux server automation?

Ansible is used for consistent configuration across multiple servers, simplifying automation.

• Uses playbooks for tasks
• Monitors with ansible-inventory
• Enhances scalability, a core DevOps principle

26. Where would you store custom Bash scripts for system-wide use?

• Store in /usr/local/bin
• Set executable permissions
• Ensure accessibility
  Script storage enables automation across servers.
  This practice is vital for streamlined Linux administration.

27. Who would write a script to monitor Linux server health, and why?

DevOps engineers write monitoring scripts to track metrics and prevent failures. They use tools like top and sar to ensure uptime. This proactive maintenance is a core skill for managing production Linux systems.

28. Which command validates a Bash script syntax on a Linux server?

bash -n script.sh

Use bash -n to check syntax without execution. This prevents errors, a critical task for ensuring reliable automation in Linux production environments.

29. What would you do if a cron job fails to run as scheduled?

If a cron job fails, verify syntax, permissions, and logs. Missed jobs disrupt automation.

• Check crontab -e
• Review /var/log/cron
• Test manually
  This restores scheduled task execution in Linux systems.

30. How would you automate log rotation on a Linux server?

To automate log rotation, configure logrotate with rules for size and frequency. This prevents disk issues, a core task for admins maintaining clean Linux systems in production environments.

31. Why would an Ansible playbook fail to execute on a Linux server?

• Connectivity issues
• Incorrect inventory
• Syntax errors
  Playbook failures halt automation.
  Checking logs with ansible-playbook --verbose identifies errors.
  Fixing configurations ensures execution, a critical skill for DevOps workflows.

32. When would you use Python for Linux automation tasks?

Python automates complex tasks like log analysis or API integration due to its robust libraries.

• Uses argparse for inputs
• Logs with logging
• Enhances flexibility, a core Linux principle
  This supports scalable automation in enterprise environments.

33. Where would you store Ansible playbooks for Linux automation?

mkdir /etc/ansible/playbooks
mv playbook.yml /etc/ansible/playbooks/

Store playbooks in /etc/ansible/playbooks for centralized management. This organizes automation tasks, a vital task for admins managing multiple Linux servers.

34. Who would automate CI/CD pipelines on Linux servers, and why?

CI/CD pipelines are automated by DevOps engineers to streamline deployments and ensure rapid delivery. They configure tools like Jenkins or GitLab, a core skill for efficient Linux-based development environments.

35. Which command debugs a Python script on a Linux server?

• python3 -m pdb script.py
• Traces execution
• Identifies errors
  Debugging ensures reliable scripts.
  This command is essential for robust Linux automation.

36. What would you do if a Linux server’s automation script consumes excessive CPU?

If a script overuses CPU, check loops, optimize code, and adjust priority. High usage slows systems.

• Monitor with top
• Debug with strace
• Optimize logic
  This restores performance in Linux automation workflows.

Networking

37. How would you configure a Linux server as a VPN endpoint?

sudo apt install openvpn
sudo nano /etc/openvpn/server.conf
sudo systemctl enable openvpn@server

Install OpenVPN, configure the server, and enable it. This secures remote access, a core task for admins managing Linux networks in enterprise settings.

38. Why would a Linux server fail to connect to a remote host?

• Firewall restrictions
• DNS misconfiguration
• Network issues
  Connectivity failures block communication.
  Checking iptables identifies restrictions.
  Fixing settings restores access, a critical skill for network reliability.

39. When would you use VLANs on a Linux server for networking?

VLANs isolate traffic for security and performance in complex networks.

• Configured with ip link add
• Monitors with ip vlan
• Enhances isolation, a core networking principle

40. Where would you configure network interfaces on a Linux server?

• Edit /etc/network/interfaces
• Use nmcli for NetworkManager
• Restart networking
  Interface configuration ensures connectivity.
  This practice is vital for Linux network management.

41. Who would troubleshoot Linux network connectivity issues, and why?

Network engineers resolve connectivity issues to restore access and ensure uptime. They analyze logs and configurations, a core skill for maintaining reliable Linux networks in enterprise environments.

42. Which command monitors real-time network traffic on a Linux server?

sudo tcpdump -i eth0

Use tcpdump to capture packets. This identifies traffic issues, a critical task for troubleshooting Linux network performance in production environments.

43. What would you do if a Linux server cannot ping an external IP?

• Check routing table
• Verify firewall rules
• Test DNS resolution
  Ping failures disrupt connectivity. Checking routes and firewalls with ip route and iptables -L resolves issues, a key task for network stability.

44. How would you set up SSH access on a Linux server?

To configure SSH, install openssh-server, enable the service, and open port 22. This ensures secure remote access, a core task for admins managing Linux servers in distributed environments.

45. Why would a Linux server experience packet loss in a network?

• Network congestion
• Faulty NIC
• Misconfigured routes
  Packet loss degrades performance.
  Checking ping identifies issues.
  Optimizing network settings ensures reliability, a critical skill for networking.

46. When would you use netplan for network configuration on a Linux server?

Netplan is used for simplified network configuration on Ubuntu servers.

• Configured in /etc/netplan
• Applied with netplan apply
• Enhances management, a core Linux principle
  This streamlines network setup in modern environments.

47. Where would you verify network interface status on a Linux server?

ip link show
# or
ifconfig

Use ip link or ifconfig to check interface status. This ensures connectivity, a vital task for managing Linux networks in production settings.

48. Who would configure a Linux server as a router, and why?

Network engineers configure routing to connect subnets and ensure traffic flow. They set up routing tables, a core skill for managing Linux-based network infrastructure in enterprise environments.

49. Which command checks open ports on a Linux server?

• ss -tuln
• Lists open ports
• Verifies services
  Port monitoring ensures security.
  This command is essential for Linux network management.

50. What would you do if a Linux server’s network interface drops packets?

If packets drop, check NIC settings, monitor traffic, and verify QoS. Drops disrupt communication.

• Use ip -s link
• Check tcpdump
• Adjust configurations
  This restores network reliability in Linux systems.

51. How would you optimize a Linux server for high network throughput?

To optimize throughput, tune kernel parameters, adjust MTU, and prioritize traffic. This ensures fast communication, a core task for admins managing Linux servers in high-traffic environments like data centers.

Security

52. Why would a Linux server reject legitimate user logins?

• Locked accounts
• PAM misconfiguration
• Incorrect credentials
  Login failures block access.
  Checking /etc/shadow identifies issues.
  Fixing configurations restores access, a critical skill for secure administration.

53. When would you use SELinux on a Linux server?

SELinux enforces strict access controls for enhanced security in sensitive environments.

• Configured in /etc/selinux/config
• Monitors with getenforce
• Protects critical systems, a core security principle

54. Where would you configure firewall rules on a Linux server?

sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT
sudo iptables-save > /etc/iptables/rules.v4

Set iptables rules and save to /etc/iptables/rules.v4. This secures traffic, a vital task for protecting Linux servers in enterprise networks.

55. Who would implement two-factor authentication on a Linux server, and why?

Security admins implement two-factor authentication to enhance login security and prevent breaches. They configure PAM modules, a core skill for safeguarding Linux systems in compliance-driven environments.

56. Which command monitors security logs on a Linux server?

• tail -f /var/log/auth.log
• Tracks login attempts
• Detects violations
  Security log monitoring prevents breaches.
  This command is essential for Linux system security.

57. What would you do if a Linux server detects unauthorized access?

• Review logs
• Restrict accounts
• Update passwords
  Unauthorized access risks security. Checking logs and securing accounts mitigates threats, a key task for protecting Linux servers in production environments.

58. How would you secure a Linux server against SSH brute-force attacks?

sudo apt install fail2ban
sudo nano /etc/fail2ban/jail.local
sudo systemctl restart fail2ban

Install fail2ban, configure SSH protection, and restart. This blocks brute-force attempts, a core task for securing Linux servers in enterprise settings.

59. Why would a Linux server’s SSH service fail to start?

• Port conflicts
• Misconfigured SSHD
• Corrupted keys
  SSH failures block access.
  Checking /etc/ssh/sshd_config identifies issues.
  Fixing settings restores service, a critical skill for secure administration.

60. When would you use AppArmor for Linux security?

AppArmor restricts applications to enhance security in critical systems.

• Configured in /etc/apparmor.d
• Monitors with aa-status
• Protects services, a core security principle
  This ensures safe application execution in Linux environments.

61. Where would you store SSH keys on a Linux server?

SSH keys are stored in ~/.ssh/authorized_keys with strict permissions. Set chmod 600 to secure them. This ensures safe remote access, a vital task for managing Linux servers in distributed environments.

62. Who would audit Linux server security, and why?

• Security engineers
• Identify vulnerabilities
• Ensure compliance
  Audits protect sensitive data. Engineers perform them for safety, a core skill for Linux systems in regulated industries.

63. Which command scans for Linux server vulnerabilities?

sudo lynis audit system

Use lynis to audit system security. This identifies vulnerabilities, a critical task for securing Linux servers in high-security environments like finance.

64. What would you do if a Linux server is compromised by malware?

If compromised, isolate the server, scan with clamav, and remove malware. Breaches risk data loss.

• Run clamscan -r /
• Check /var/log
• Apply patches
  This restores security in Linux systems.

65. How would you configure encrypted backups on a Linux server?

To configure encrypted backups, use rsync with GPG encryption and schedule via cron. This secures data, a core task for admins ensuring compliance in Linux environments with sensitive information.

66. Why would a Linux server’s audit logs be incomplete?

Incomplete logs may result from misconfigured auditd, disk space shortages, or permission errors. Checking auditctl and logs identifies issues. Fixing configurations ensures compliance, a critical skill for maintaining secure Linux systems in regulated environments.

Troubleshooting

67. When would you use journalctl for Linux troubleshooting?

Journalctl is used to analyze systemd logs for service or system issues.

• Filters with journalctl -u
• Monitors with journalctl -f
• Enhances diagnostics, a core troubleshooting principle
  This aids debugging in production Linux environments.

68. Where would you check kernel panic logs on a Linux server?

dmesg | grep -i panic
# or
cat /var/log/kern.log

Check dmesg or /var/log/kern.log for panic details. This diagnoses crashes, a vital task for troubleshooting Linux servers in high-availability systems.

69. Who would troubleshoot Linux server outages, and why?

System admins troubleshoot outages to restore services and ensure uptime. They analyze logs and configurations, a core skill for maintaining reliable Linux systems in enterprise environments with critical workloads.

70. Which command debugs network issues on a Linux server?

• tcpdump -i eth0
• Captures packets
• Analyzes traffic
  Network debugging restores connectivity.
  This command is essential for diagnosing Linux network issues.

71. What would you do if a Linux server experiences high CPU usage?

• Monitor with top
• Identify heavy processes
• Optimize configurations
  High CPU usage slows performance. Checking processes and tuning settings restores efficiency, a key task for maintaining Linux servers in production.

72. How would you troubleshoot a slow Linux database server?

sudo systemctl status mysql
sudo tail -f /var/log/mysql/error.log

Check MySQL status and logs for errors. Optimize queries and resources. This ensures database performance, a core task for admins managing Linux-based databases.

73. Why would a Linux server fail to resolve DNS names?

• Misconfigured resolver
• Network issues
• Firewall restrictions
  DNS failures block connectivity.
  Checking /etc/resolv.conf identifies issues.
  Fixing settings restores access, a critical skill for network reliability.

74. When would you use strace for Linux troubleshooting?

Strace debugs system calls for application issues on Linux servers.

• Traces with strace -p
• Logs with strace -o
• Enhances diagnostics, a core troubleshooting principle
  This identifies errors in production environments.

75. Where would you check hardware errors on a Linux server?

Hardware errors are logged in /var/log/messages or accessed via dmesg. Checking these identifies failures, a vital task for troubleshooting Linux servers in enterprise settings with critical hardware dependencies.

76. Who would monitor Linux server performance, and why?

DevOps engineers monitor performance to ensure efficiency and prevent bottlenecks. They use tools like sar and prometheus, a core skill for maintaining uptime in Linux production environments.

77. Which command checks filesystem errors on a Linux server?

sudo fsck /dev/sda1

Use fsck to scan and repair filesystem errors. This ensures data integrity, a critical task for maintaining Linux servers in enterprise environments with large datasets.

78. What would you do if a Linux service fails to restart?

If a service fails, check status, logs, and dependencies. Service failures disrupt operations.

• Use systemctl status
• Review /var/log/syslog
• Fix configurations
  This restores functionality in Linux systems.

79. How would you troubleshoot network latency on a Linux server?

To troubleshoot latency, monitor traffic, check QoS, and verify NIC settings. Latency slows services, a core task for admins ensuring reliable Linux network performance in enterprise environments.

80. Why would a Linux server’s process hang unexpectedly?

• Resource starvation
• Deadlocks
• Kernel issues
  Hanging processes disrupt services.
  Checking ps aux identifies issues.
  Killing or optimizing restores functionality, a critical skill for system reliability.

81. When would you use perf for Linux troubleshooting?

Perf analyzes CPU and memory performance for optimization in complex systems.

• Profiles with perf record
• Analyzes with perf report
• Enhances diagnostics, a core troubleshooting principle
  This improves performance in Linux environments.

82. Where would you check network packet drops on a Linux server?

ip -s link show eth0
# or
tcpdump -i eth0

Check ip -s link or tcpdump for packet drops. This identifies network issues, a vital task for troubleshooting Linux servers in high-traffic environments.

83. Who would troubleshoot Linux server crashes, and why?

System engineers troubleshoot crashes to restore stability and ensure uptime. They analyze logs and kernel dumps, a core skill for maintaining reliable Linux systems in enterprise environments.

84. Which command debugs Linux kernel issues?

• dmesg | grep -i error
• Identifies kernel errors
• Tracks system issues
  Kernel debugging restores stability.
  This command is essential for Linux troubleshooting.

85. What would you do if a Linux server’s Docker daemon fails?

If the Docker daemon fails, check logs, restart the service, and verify configurations. Failures disrupt containers.

• Use journalctl -u docker
• Restart with systemctl restart docker
• Check configs
  This restores container functionality in Linux systems.

Cloud and Containers

86. How would you configure a Linux server for Kubernetes?

To configure Kubernetes, install kubeadm, kubectl, kubelet, and initialize a cluster. This enables container orchestration, a core task for admins deploying scalable Linux applications in cloud environments.

87. Why would a Linux container fail to start in a cloud environment?

• Missing images
• Resource limits
• Network misconfiguration
  Container failures disrupt applications.
  Checking docker logs identifies issues.
  Adjusting resources ensures functionality, a critical skill for cloud-native systems.

88. When would you use Docker on a Linux server for deployments?

Docker containerizes applications for portability across cloud platforms.

• Builds with docker build
• Runs with docker run
• Enhances scalability, a core DevOps principle
  This ensures consistent deployments in Linux environments.

89. Where would you store Docker images on a Linux server?

docker images
# Stored in /var/lib/docker

Docker images are stored in /var/lib/docker. Managing them ensures container availability, a vital task for admins running Linux-based containerized applications.

90. Who would configure a Linux server for AWS ECS, and why?

Cloud engineers configure ECS to deploy containerized apps and ensure scalability. They set up clusters and tasks, a core skill for managing Linux-based cloud environments.

91. Which command monitors container performance on a Linux server?

• docker stats
• Tracks CPU usage
• Monitors memory
  Container monitoring ensures performance.
  This command is essential for Linux-based cloud deployments.

92. What would you do if a Linux server in AWS fails to launch?

• Check EC2 logs
• Verify AMI settings
• Inspect security groups
  Launch failures disrupt cloud services. Checking logs and configurations with AWS CLI resolves issues, a key task for managing Linux in cloud environments.

93. How would you set up a Linux server for Prometheus monitoring?

sudo apt install prometheus
sudo nano /etc/prometheus/prometheus.yml
sudo systemctl restart prometheus

Install Prometheus, configure targets, and restart. This enables system monitoring, a core task for admins ensuring Linux server performance in cloud environments.

94. Why would a Linux server in GCP lose network connectivity?

• VPC misconfiguration
• Firewall rules
• Routing issues
  Connectivity loss disrupts services.
  Checking gcloud compute identifies issues.
  Fixing settings restores access, a critical skill for cloud networking.

95. When would you use Terraform for Linux infrastructure automation?

Terraform provisions Linux servers in cloud environments for consistent infrastructure.

• Defines resources in HCL
• Applies with terraform apply
• Ensures scalability, a core DevOps principle
  This streamlines cloud deployments in Linux systems.

96. Where would you configure cloud-specific kernel parameters on a Linux server?

Cloud-specific parameters are set in /etc/sysctl.d for optimized performance. Apply with sysctl -p. This tunes Linux servers for cloud environments, a vital task for admins in AWS or GCP deployments.

97. Who would set up a Linux server for Jenkins CI/CD, and why?

DevOps engineers configure Jenkins to automate CI/CD pipelines for rapid software delivery. They set up agents and jobs, a core skill for streamlining Linux-based development workflows in enterprise settings.

Advanced Scenarios

98. Which command checks Kubernetes cluster health on a Linux server?

kubectl get nodes
kubectl cluster-info

Use kubectl to verify node and cluster status. This ensures reliability, a critical task for admins managing Linux-based Kubernetes deployments in production.

99. What would you do if a Linux server’s CI/CD pipeline fails?

• Check pipeline logs
• Verify configurations
• Test jobs
  Pipeline failures delay deployments. Checking logs and scripts with gitlab-ci.yml resolves issues, a key task for maintaining Linux-based CI/CD workflows.

100. How would you configure a Linux server for ELK stack logging?

To configure ELK, install Elasticsearch, Logstash, and Kibana, then enable services. This centralizes logging, a core task for admins monitoring Linux servers in production environments with complex applications.

101. Why would a Linux server’s Kubernetes node go offline?

• Network issues
• Resource exhaustion
• Kubelet failure
  Node failures disrupt clusters.
  Checking kubectl describe node identifies issues.
  Restarting services restores functionality, a critical skill for Kubernetes management.

102. When would you use Helm for Kubernetes on a Linux server?

Helm manages Kubernetes applications with reusable charts for simplified deployments.

• Installs with helm install
• Monitors with helm list
• Enhances automation, a core DevOps principle
  This streamlines Linux-based Kubernetes deployments.

103. Where would you store Kubernetes manifests on a Linux server?

mkdir /etc/kubernetes/manifests
kubectl apply -f /etc/kubernetes/manifests/

Store manifests in /etc/kubernetes/manifests. This ensures consistent deployments, a vital task for admins managing Linux-based Kubernetes clusters.

104. Who would optimize a Linux server for high availability, and why?

System architects optimize servers for high availability to ensure uptime and failover. They configure clustering, a core skill for maintaining reliable Linux systems in mission-critical environments.

105. Which command monitors Linux server performance in real-time?

• sar -u 1
• Tracks CPU usage
• Monitors system metrics
  Performance monitoring ensures efficiency.
  This command is essential for managing Linux servers in production.

Tips to Ace Scenario-Based Linux Interviews

• Practice scenario-based troubleshooting
• Build automation and CI/CD labs
• Master systemctl, journalctl, and kubectl
• Study networking and security configurations
• Review Linux documentation
• Explain solutions clearly with technical precision