Route53 Flashcards
What is an A Record?
The fundamental type of DNS record. The “A” stands for address; this is used to translate the domain name to an IP address
What is a Name Server Record?
Used by TLD servers to direct traffic to the Content DNS server, which contains the authoritative DNS records
What is a CNAME?
A Canonical Name, used to resolve one domain name to another; these cannot be used as ApexZone records
Alias Record
Effectively the same as CNAME records, but have additional functionality in AWS. For example, you can use these as Apex Zone records. These can map to AWS resources in other AWS accounts, ELBs, CloudFront, S3 buckets or websites.
Other record types
SOA, MX, PTR
Which type of routing policies would permit you to route traffic by geography?
Geolocation routing and Geoproximity Routing via Traffic Flow
What type of routing policy would you use for high availability and random routing?
Multivalue Answer Routing, which is just like Simple routing but also implements health checks and can return multiple responses to DNS queries.
What kind of routing policy randomly selects an IP?
Simple Routing Policy
What routing policy will deliver content based on proximity to your user over the network?
Latency based routing
What kind of policy can you implement to distribute traffic based on percentages?
Weighted Routing
What type of routing policy uses an active/passive setup?
Failover Routing
True or False: By default, an ELB has a public IPv4 assigned when created that you resolve to
False; ELBs are resolvable by DNS only
How many domains can you have per AWS account?
50, but you can request more
What is a Hosted Zone?
A hosted zone stores and manages records for your domain and comes with 4 name servers across 4 TLDs.
What is the quota of Hosted Zones per account?
500/account
