Associate ACTUAL UPDATED Questions
and CORRECT Answers
CloudWatch - CORRECT ANSWER - An AWS service for real-time monitoring of
applications and resources in AWS.
metric - CORRECT ANSWER - A data point related to resources and applications.
Which services provide free metrics? - CORRECT ANSWER - EC2, EBS, RDS
How long are metrics retained? - CORRECT ANSWER - 1 minute metrics for 15 days, 5
minute metrics for 63 days, 1 hour metrics for 455 days.
CloudWatch Alarms - CORRECT ANSWER - Takes action when a metric exceeds a
threshold.
What states can a CloudWatch alarm be in? - CORRECT ANSWER - OK, alarm,
insufficient
OK state - CORRECT ANSWER - The threshold is in the normal range.
ALARM state - CORRECT ANSWER - The threshold has been exceeded.
INSUFFICIENT state - CORRECT ANSWER - There is not enough data to evaluate the
state.
What are the main components of an alarm configuration? - CORRECT ANSWER -
Metric, threshold, period, action.
,threshold - CORRECT ANSWER - The point at which an alarm should generate a
notification or take action.
period - CORRECT ANSWER - The defined amount of time before an alarm acts.
action - CORRECT ANSWER - What an alarm does when the threshold is exceed.
What actions can CloudWatch alarms take? - CORRECT ANSWER - Send a notification
to SNS, trigger AutoScaling, trigger EC2.
CloudWatch Events - CORRECT ANSWER - Automatically takes action on AWS
resources based on triggers or schedules.
EventSource - CORRECT ANSWER - What triggers an Event whether an operational
change in a service or a schedule.
Rule - CORRECT ANSWER - The pattern matching events to targets.
Target - CORRECT ANSWER - The service or services that react to a CloudWatch Event.
CloudWatch Logs - CORRECT ANSWER - Monitors, stores, and accesses logs from a
variety of services.
What are potential sources of CloudWatch Logs? - CORRECT ANSWER - EC2 instances,
on-premises servers, CloudTrail, Route53.
What are the components of CloudWatch Logs? - CORRECT ANSWER - Log Events,
Log Streams, Log Groups, Metric Filters, Retention Settings.
, Log Event - CORRECT ANSWER - Record of activity recorded by the monitored
resourced.
Log Stream - CORRECT ANSWER - Sequence of log events from the same source or
application.
Log Group - CORRECT ANSWER - A collection of log streams with the same access
control, monitoring, and retention settings.
Metric Filter - CORRECT ANSWER - Extracts data from a log group's log streams and
converts that data into a metric.
What kind of encryption does CloudWatch Logs support? - CORRECT ANSWER - KMS
System Status Check - CORRECT ANSWER - Monitors the AWS systems required to use
an EC2 instance.
Instance Status Check - CORRECT ANSWER - Monitors the software and network
configuration for an instance.
Why might a System Status Check fail? - CORRECT ANSWER - Loss of network
connectivity, loss of power, issues with the physical host.
How do you recover from a System Status Check failure? - CORRECT ANSWER - Stop
and start EBS-backed instances and terminate and replace instance store-backed instances to get
new hardware.
Why might an Instance Status Check fail? - CORRECT ANSWER - Failed system status
check, incorrect networking or startup configuration, exhausted memory, corrupted file system,
incompatible kernel.