SAA

Question 1

How to add disk IO

Answer 1

add EBS volumes ands RAID 0 accross

Question 2

EBS Snapshots

Answer 2

EBS volume stored redundantly across multiple AZs
You cannot delete a snapshot of an EBS Volume that is used as the root device of a registered AMI
You must de-register the AMI before being able to delete the root device

Question 3

CLoudWatch monitoring frequency

Answer 3

standard: every 5 minutes,

detailed monitoring: every minute

Question 4

AWS cli

Answer 4

aws [options] [parameters]

Question 5

EC2 placement groups

Answer 5

recommended for low latency, 
ALWAYS within 1 AZ
name must be unique
must be of type compute, GPU, Storage opztimized
can't merge or move instances into them

Question 6

DNS failover

Answer 6

when failing over time to live should be as low as possible

Question 7

Redshift

Answer 7

OLAP data warehousing DB thats is a petabuyte-scale warehousing service. 10x faster than traditional data warehousing

Question 8

ElastiCache

Answer 8

in memory cache environments (memcached,redis) that helps improve performance of web apps

Question 9

Leader Node

Answer 9

manages client connection and receives queries

Question 10

Redshift security

Answer 10

Transit - SSL

Rest - AES-256

Question 11

Redshift availability

Answer 11

Not across AZs, can restore snapshot to new AZ

Question 12

RDS features

Answer 12

3TB Max
backup retention period: max 35 days
Not allowed to SSH into server
resizable instance
new endpoint from snapshot restoration
cannot use secondary DB as read node
30000 max IOPS

Question 13

RDS scaling

Answer 13

Scales in 10 GB increments to 64GB

compute up to 32 vCPUs and 244GB memory

Question 14

RDS availability

Answer 14

2 copies stored in each AZ
minimum of 3 AZs
self healing
can loose 3 copies w/o afffecting read availability
can loose 2 copies w/o afffecting write availability

Question 15

VPC restrictions

Answer 15

5 Elastic IPS
5 Internet Gateways
5 VPCs per region
50 VPN connections per region
50 customer gateways per region
200 route tables per region
100 security groups per VPC

Question 16

Dedicated tenancy

Answer 16

will make all EC2 instances deployed on dedicated hardware

Question 17

Security group availability

Answer 17

available across AZs

Question 18

Access Control Lists

Answer 18

acts like firewall for subnet
across multiple subnets
overrules security groups

Question 19

3 tier architecture

Answer 19

web tier (HTTP/S)
application tier (ssh/rdp management)
database tier (ssh/rdp)

Question 20

A records

Answer 20

resolve host names to IP

Question 21

CNAME records

Answer 21

routes domain names domain names

Question 22

AAAA records

Answer 22

routes IPv6s to domain names

Question 23

MX Records

Answer 23

routes to Mail Host

Question 24

NS records

Answer 24

Records that list DNS Servers for a web site

Question 25

PTR records

Answer 25

gives domain name when given an IP

Question 26

SOA Records

Answer 26

identifies base DNS info