Can a DNS resolve to multiple IPs?
DNS can hold multiple records for the same domain name. DNS can return the list of IP addresses for the same domain name. When a web-browser requests a web-site, it will try these IP addresses one-by-one, until it gets a response.
Can an A record point to multiple IP addresses?
In either mode, a DNS A record must be defined with more than one IP address (known as DNS A record failover). The first IP address should point to the default, production server, and the other IP addresses should point to identical (or frequently synchronized) redundant servers.
How do I add multiple IPs to a DNS record?
To create multiple A (Host Records) with the same IP, simply create a new A (Host) record, and give it IP #1. Then create another A (Host) record, giving it the same IP address. You can add as many as you like. DNS Round Robin feature will rotate responses for each query.
Can a machine with a single DNS name have multiple IP addresses?
Can a machine with a single DNS name have multiple IP addresses? How could this occur? ANS: Yes. Remember that an IP address consist of a network number and a host number.
What is Round Robin How do you configure it?
Round robin load balancing is a simple way to distribute client requests across a group of servers. A client request is forwarded to each server in turn. The algorithm instructs the load balancer to go back to the top of the list and repeats again.
What does a PTR record do?
A PTR (or Pointer) record is a security tool. Essentially, when you receive an email, your mail server uses the PTR record that comes in with the email message to check that the mail server sending the email matches the IP address that it claims to be using. This is also known as “reverse DNS lookup.”
Can I have 2 DNS servers?
At a minimum, you’ll need two DNS servers for each Internet domain you have. You can have more than two for a domain but usually three is tops unless you have multiple server farms where you would want to distribute the DNS lookup load. It’s a good idea to have at least one of your DNS servers at a separate location.
Can you add multiple A records?
You can do a lot with A records, including using multiple A records for the same domain in order to provide redundancy and fallbacks. Additionally, multiple names could point to the same address, in which case each would have its own A record pointing to that same IP address. The DNS A record is specified by RFC 1035.
What Cname means?
Canonical Name
A Canonical Name or CNAME record is a type of DNS record that maps an alias name to a true or canonical domain name. CNAME records are typically used to map a subdomain such as www or mail to the domain hosting that subdomain’s content.
Can a server have multiple DNS names?
You can have multiple DNS names per IP but I’m unsure about NetBIOS. I’m looking to keep other apps that are configured for “srv” to keep from breaking. This is for internal use only. Apps can use either DNS or SMB so I’ve posted a NetBIOS solution.
Can a machine with a single DNS name have multiple IP addresses if so give a possible example if not then explain why not?
yes it can happen. DNS, the Domain Name Service, as you would know, is used to help us resolve Fully Qualified Domain Names (FQDN) to IP addresses.