CompTIA A+ Certification Core 2 (220-1102) - Working with DNS

The video tutorial covers the basics of DNS and DHCP, explaining how DNS is provided by DHCP servers and how to check DNS settings using ipconfig. It demonstrates how to configure DNS settings both automatically and statically, and discusses the importance of having alternative DNS servers like Google's public DNS. The tutorial also introduces NS Lookup as a tool for troubleshooting DNS issues, explaining how to use it to verify DNS server functionality and identify problems.

What command can you use to check your DNS server configuration on a Windows system?

• netstat

• ipconfig /all

• ping

• tracert

Why might you want to configure a DNS server manually?

• To increase internet speed

• To prevent IP address conflicts

• To avoid using DHCP

• To ensure DNS resolution within a local network

Which of the following is a well-known public DNS server provided by Google?

• 1.1.1.1

• 7.7.7.7

• 8.8.8.8

• 9.9.9.9

What is the primary purpose of the NS Lookup tool?

• To configure network adapters

• To check the status of a DNS server

• To monitor network traffic

• To reset DNS settings

What type of DNS record is used to map a domain name to an IP address?

• A record

• MX record

• CNAME record

• PTR record

What does a timeout in NS Lookup indicate?

• The DNS server is functioning correctly

• The DNS server is not reachable

• The network connection is slow

• The IP address is incorrect

If you suspect a DNS server issue, what is a recommended first step?

• Switch to a different DNS server

• Restart your computer

• Disable the firewall

• Reinstall the network driver