IT By Design System Administrator Interview Questions and Answers for Experienced

nslookup is a command-line tool used to query DNS servers and obtain domain name or IP address information.

• nslookup stands for Name Server Lookup

• It is used to troubleshoot DNS-related issues

• It can be used to obtain information about a domain name or IP address

• It can also be used to test DNS records such as MX, A, and CNAME records

Accessing firewall outside policy can be done through VPN or remote access.

• Use a VPN to access the firewall outside policy

• Set up remote access to the firewall

• Configure the firewall to allow access from specific IP addresses

• Use a jump server to access the firewall

• Use a console cable to connect directly to the firewall

BSOD and slow performance troubleshooting

• Check for hardware issues such as faulty RAM or hard drive

• Update drivers and firmware

• Scan for malware and viruses

• Check for overheating

• Review system logs for errors

• Disable unnecessary startup programs

• Perform a clean boot

• Check for available updates and patches

• Perform a system restore

• Reinstall the operating system if necessary