A user has configured ELB with two EBS backed EC2 instances. The user is trying to understand the DNS access
and IP support for ELB. Which of the below mentioned statements may not help the user understand the IP
mechanism supported by ELB?

A.
The client can connect over IPV4 or IPV6 using Dualstack
The user can find the data by giving the exact values in the time Tab under CloudWatch metrics

B.
ELB DNS supports both IPV4 and IPV6
The user can find the data by filtering values of the last 1 week for a 1 hour period in the Relative tab
under CloudWatch metrics

C.
Communication between the load balancer and back-end instances is always through IPV4
It is not possible to find the exact time from the console. The user has to use CLI to provide the
specific time

D.
The ELB supports either IPV4 or IPV6 but not both
The user can find the data by giving the exact values in the Absolute tab under CloudWatch metrics

A.
The client can connect over IPV4 or IPV6 using Dualstack
The user can find the data by giving the exact values in the time Tab under CloudWatch metrics

B.
ELB DNS supports both IPV4 and IPV6
The user can find the data by filtering values of the last 1 week for a 1 hour period in the Relative tab
under CloudWatch metrics

C.
Communication between the load balancer and back-end instances is always through IPV4
It is not possible to find the exact time from the console. The user has to use CLI to provide the
specific time

D.
The ELB supports either IPV4 or IPV6 but not both
The user can find the data by giving the exact values in the Absolute tab under CloudWatch metrics

Explanation:
Elastic Load Balancing supports both Internet Protocol version 6 (IPv6. and Internet Protocol version 4 (IPv4..
Clients can connect to the user’s load balancer using either IPv4 or IPv6 (in EC2-Classic. DNS. However,
communication between the load balancer and its back-end instances uses only IPv4. The user can use the
Dualstack-prefixed DNS name to enable IPv6 support for communications between the client and the load
balancers. Thus, the clients are able to access the load balancer using either IPv4 or IPv6 as their individual
connectivity needs dictate.
Question:67
A
user has received a message from the support team that an issue occurred 1 week back between 3 AM to 4
AM and the EC2 server was not reachable. The user is checking the CloudWatch metrics of that instance. How
can the user find the data easily using the CloudWatch console?

If the user is viewing the data inside the CloudWatch console, the console provides options to filter values
either using the relative period, such as days /hours or using the Absolute tab where the user can provide data
with a specific date and time. The console also provides the option to search using the local timezone under
the time range caption in the console.