Route 53

Question 1

Translates the human friendly hostnames into the machine IP addresses

www.google.com => 172.217.18.36

Answer 1

DNS (Domain Name System)

Question 2

A highly available, scalable, fully managed and Authoritative DNS

Answer 2

Route 53

Question 3

What does Authoritative mean?

Answer 3

The customer (you) can update the DNS records

Question 4

Maps a hostname to IPv4

What record type is this?

Answer 4

A

Question 5

Maps a hostname to IPv6

What record type is this?

Answer 5

AAAA

Question 6

Maps hostname to another hostname

What record type is this?

Answer 6

CNAME

Question 7

Name servers for the Hosted Zone

What record type is this?

Answer 7

NS

Question 8

A container for récords that define how to route traffic to a domain and its subdomain

Answer 8

Hosted Zone

Question 9

Contains records that specify how to route traffic on the internet

Answer 9

Public Hosted Zones

Question 10

Contains records that specify how you route traffic within one or more VPCs

Answer 10

Private Hosted Zones

Question 11

How much does it cost per hosted zone?

Answer 11

$0.50 per month

Question 12

• Typically, route traffic to a single resource
• Can specify multiple values in the same record
• If multiple values are returned, a random one is chosen by the client

What routing policy is this?

Answer 12

Simple

Question 13

• Control the % of the requests that go to each specific resource
• DNS records must have the same name and type
• Can be associated with Health Checks
• Use cases: load balancing between regions, testing new applications versions

What routing policy is this?

Answer 13

Weighted

Question 14

TTL is mandatory for each DNS record except what?

Answer 14

Alias records

Question 15

High TTL means what?

Answer 15

Less traffic on Route 53

Question 16

Low TTL means what?

Answer 16

More traffic on Route 53 ($$)

Question 17

How much time it takes for your computer to send signals to a server and then receive a response back.

Answer 17

Latency

Question 18

Create a CloudWatch Metric and associate a CloudWatch Alarm, then create a Health Check that checks alarm itself

Answer 18

Health check for a Private Hosted Zone

Question 19

A backup operational mode in which the functions of a system component are assumed by a secondary component

Answer 19

Failover

Question 20

A way of asking a service on a particular server whether or not it is capable of performing work successfully

Answer 20

Health Check

Question 21

Use case: website localization, restrict content distribution, load balancing

What routing policy is this?

Answer 21

Geolocation

Question 22

The ability to track a device’s whereabouts using GPS, cell phone towers, WiFi access points or a combination of these.

Answer 22

Geolocation

Question 23

A (blank) expands or shrinks the size of the geographic region from which traffic is routed to a resource

Answer 23

Bias

Question 24

Routes traffic to your resources based on the geographic location of your users and your resources.

What routing policy is this?

Answer 24

Geoproximity

Question 25

Resources serve traffic based on the geographic location of your users, meaning the location that DNS queries originate from What routing policy is this?

Answer 25

Geolocation

Question 26

Works by mapping IP addresses to locations What routing policy is this?

Answer 26

Geolocation

Question 27

You need to shift traffic from one region to another, by increasing the bias What routing policy should you use?

Answer 27

Geoproximity

Question 28

• Simplify the process of creating and maintaining records in large and complex configurations • Visual editor to manage complex routing decision trees What routing policy is this?

Answer 28

Traffic flow

Question 29

Use when routing traffic to multiple resources What routing policy is this?

Answer 29

Multi-Value

Question 30

For people requesting your website through the internet, what should they use?

Answer 30

Public Hosted Zone

Question 31

Where should NS records be updated?

Answer 31

3rd party Registar

Question 32

What are valid Route 53 Health Checks?

Answer 32

Endpoint Other Health Checks CloudWatch Alarms

Question 33

The Alias record can be added to the what?

Answer 33

Root domain

Question 34

Which record type has a loss of geo-targeting data?

Answer 34

Alias Record

Question 35

Each DNS record has a (blank) which orders clients for how long to cache these values and not overload the DNS Resolver with DNS requests.

Answer 35

TTL