ELB CloudWatch Metrics

Question 1

By default, ELB publishes metrics to…

Answer 1

CloudWatch

Question 2

True or False: ELB Publishes target status to CloudWatch along with its own metrics?

Answer 2

True.

Question 3

By default, ELB CloudWatch metrics are gathered and sent to CloudWatch at what interval?

Answer 3

60-second intervals

Question 4

Can you create CloudWatch alarms and action triggers using ELB CloudWatch metrics?

Answer 4

Yes

Question 5

What does the BackendConnectionErrors metric represent?

Answer 5

Number of unsuccessful connections to the backend instances

Question 6

What does the HealthyHostCount metric represent?

Answer 6

Number of healthy instances registered

Question 7

What does the UnHealthyHostCount metric represent?

Answer 7

Number of unhealthy instances registered

Question 8

What does the HTTPCode_Backend_ metric represent?

Answer 8

Error codes reported by the ELB

Question 9

What does the Latency metric represent?

Answer 9

Number of seconds for a registered instance to respond

Question 10

What does the RequestCount metric represent?

Answer 10

Number of requests completed / connections made during a time interval (1 or 5 minutes)

Question 11

What does the SurgeQueueLength metric represent?

Answer 11

Number of pending requests

Question 12

True or False: SurgeQueueLength is a Classic ELB only metric?

Answer 12

True

Question 13

What is the maximum size of a request queue for SurgeQueueLength?

Answer 13

1024. Additional requests will be rejected.

Question 14

What does the SpilloverCount metric represent?

Answer 14

Number of rejected requests due to a full surge queue.

Question 15

True or False: SpilloverCount is a Classic ELB-only metric?

Answer 15

True. SpilloverCount refers to rejected requests due to a full surge queue. Surge queues are a classic ELB only feature.