Monitoring and reporting

Question 1

What does cloudwatch monitor by default for EC2?

Answer 1

Host level metrics
CPU
Network
Disk
Status check

Question 2

What are not default EC2 metrics

Answer 2

Ram utilization

Disk utilization

Question 3

How long will cloudwatch metrics be retained?

Answer 3

Indefinitely by default

This also includes terminated instances

Question 4

What is the minimum granularity you can have for a metric?

Answer 4

1 min

Question 5

Is Ram utilization a custom metric?

Answer 5

Yes

Question 6

You are using AWS and also have on-prem infrastructure. You would like a new solution to monitor on-perm systems. Can you use cloudwatch?

Answer 6

Yes. Just install the SSM agent

Question 7

Best use of PIOPS disk

Answer 7

Large databases
+10,000 IOPS
160 MB/s throughput

Question 8

Best use case for throughout optimized disk?

Answer 8

Big data
Streaming workloads
Data warehouses

Question 9

Best use for HDD cold

Answer 9

Low cost

Infrequently access

Question 10

You have a 1 GB volume. What IOPS burst is available?

Answer 10

3 IOPS per GB = 3 IOPS
Burst max is 3000
Burst = 3000-3=2997

Question 11

How can you achieved desired IOPS if below 10,000

Answer 11

Select the correct volume size

1 GB = 3 IOPS

Question 12

Describe 2 characteristics of how IOPS credits work?

Answer 12

When not bursting you are earning credits

Initial balance is 5.4 million,

Question 13

What are the key cloudwatch metrics for EBS disk

Answer 13

Volumereadbytes
Volumewritebytes
Volumequeuelength

Question 14

What are the EBS volume states?

Answer 14

Normal - ok
Degraded - warning
Stalled - impaired, not available
Insufficient data - insufficient data

Question 15

Do you need to detach a EBS volume to modify?

Answer 15

No

Question 16

What are the 4 EBS volume types?

Answer 16

General purpose
provisioned IOPS
Throughout optimized hdd
Cold hdd

Question 17

What EBS disk types cannot be used as root volumes?

Answer 17

HDD

Cold and throughout optimized

Question 18

What are the 3 ELB types

Answer 18

Application
Network
Classic

Question 19

What options are available to monitor ELBs?

Answer 19

Cloudwatch
Access logs
Request tracing
Cloudtrail logs

Question 20

What ELB monitoring option would you use if you need detailed information on requests, clients IP, latencies, request paths

Answer 20

Access logs

Question 21

You have an EC2 instance that is deleted. You find out after there was a performance issue and want to investigate further. What option will you have needed to review?

Answer 21

Access logs

Question 22

Where are ELB access logs stored?

Answer 22

S3

Question 23

You need to track http requests from clients to ELB

Answer 23

Request tracing

Application LB only

Question 24

You need to track detailed information about calls made to ELB API and stored them. What monotony option will you use?

Answer 24

Cloudtrail

Question 25

Your elasticache memchached deploy has loads up to 90%. What should you do to improve performance

Answer 25

Add more nodes to the cluster

Question 26

Which elasticahce option is not multi-threaded?

Answer 26

Reddis

Question 27

The elasticache swap usage is high. What should you do to improve?

Answer 27

Increase the memcached_connections_overhead parameter

Question 28

What is an eviction in elasticache?

Answer 28

Items in memory

Question 29

You see a high number of evictions in memcached. How can you optimize?

Answer 29

Scale up or scaled out

Question 30

You see a high number of evictions in reddis. How can you optimize?

Answer 30

Scale out - add read replicas

Question 31

You created a metric, then changed regions and cannot see the metric to add to a dashboard. Why?

Answer 31

Dashboards are global, but to add a new widget, you must be in the region where it was created.

Question 32

Your company bought another company and you want to centrally manage their AWS account as well as you own. What AWS service would you use?

Answer 32

AWS Organizations

Question 33

You need to ensure compliance of the AWS infrastructure and audit all changes. What services can you use?

Answer 33

AWS config will capture all changes and write to an S3 bucket. Lambda can then be used to trigger a report

Question 34

What trigger options are available with AWS config?

Answer 34

Periodic and config changes

Question 35

What permissions are needed for AWS config?

Answer 35

IAM role with read access to the resource Write access to S3 Publish access to SNS

Question 36

What metric would provide oversight, of server errors of registered instances?

Answer 36

HTTPCode_Backend_5XX

Question 37

What value will always be displayed for the DiskREadOps metric on a EBS backed EC2 instance?

Answer 37

0

Question 38

What cost tool provides reports?

Answer 38

Cost Optimizer Monitor

Question 39

Wha tool will help identify issues with underlying AWS hardware that will affect your systems?

Answer 39

AWS Personal dashboard