Route 53 basics

Question 1

Global Domain Name System (DNS) web service that routes traffic to various targets with a single database

Answer 1

Route 53

Question 2

Can you register domains with Route 53

Answer 2

Yes

Question 3

container for DNS records, and these records contain information about how you want to route traffic for a specific domain

Answer 3

Zones

Question 4

Can Route 53 tolerate the failure of one or more regions and continue to operate

Answer 4

Yes

Question 5

automatically creates a name server (NS) record and a start of authority
(SOA) record

Answer 5

Public hosted zone

Question 6

When you create a VPC, Route 53 Resolver automatically answers DNS queries for local VPC domain names of EC2 instances and records in private hosted zones

Answer 6

private hosted zones

Question 7

Stores records

Answer 7

Hosted zones

Question 8

indicates which DNS server is authoritative for that domain (i.e. which server contains the actual DNS records)

Answer 8

Nameserver Records

Question 9

Record that tells the Internet where to go to find out a domain’s IP address

Answer 9

Nameserver Records

Question 10

Record that maps host onto a IPv4 address

Answer 10

A record

Question 11

Record that maps host onto a IPv6 address

Answer 11

AAAA record

Question 12

Record that maps host to host

Answer 12

CNAME

Question 13

Can CNAME records map directly to an IP address

Answer 13

No

Question 14

Indicates how email messages should be routed in accordance with the Simple Mail Transfer Protocol (SMTP, the standard protocol for all email)

Answer 14

MX records

Question 15

‘priority’ numbers before the domains for these records indicate preference; the lower ‘priority’ value is preferred.

Answer 15

MX records

Question 16

Lets a domain administrator enter text into the Domain Name System (DNS) and prove ownership

Answer 16

TXT Records

Question 17

server setting that tells a cache how long to store DNS records before refreshing the search to get an answer again from a nameserver

Answer 17

TTL

Question 18

More queries against nameservers

Answer 18

Low TTL

Question 19

Less queries, less control to change records

Answer 19

High TTL

Question 20

manages the DNS Root Servers

Answer 20

12 Organizations

Question 21

How many DNS root nameservers exist

Answer 21

13

Question 22

Who Manages the DNS Root Zone

Answer 22

IANA

Question 23

Maintains information for all the domain names that share a common domain extension, such as .com, .net, or whatever comes after the last dot in a URL

Answer 23

TLD nameserver

Question 24

Management of TLD nameservers, has oversight for registries and registrars

Answer 24

Internet Assigned Numbers Authority (IANA)

Question 25

Organization that manages the administrative data for the domains and subdomains with the specific domain endings under its authority (zone files)

Answer 25

Registry

Question 26

Organization that manages the registration of domain names for one or more registries.

Answer 26

Registrar