Latest AWS-SysOps Exam Questions

D.   

The new instance in the EU region will not have the changes made after the AMI copy

Within EC2, when the user copies an AMI, the new AMI is fully independent of the source
AMI; there is no link to the original (source. AMI. The user can modify the source AMI
without affecting the new AMI and vice a versa. Therefore, in this case even if the source
AMI is modified, the copied AMI of the EU region will not have the changes. Thus, after
copy the user needs to copy the new source AMI to the destination region to get those
changes.

A.   

The user has provided the wrong user name for the OS login

If the user is trying to connect to a Linux EC2 instance and receives the Host Key not found
error the probable reasons are:
The private key pair is not right
The user name to login is wrong

A.   

The private key file has the wrong file permission

While doing SSH to an EC2 instance, if you get an Unprotected Private Key File error it
means that the private key file's permissions on your computer are too open. Ideally the
private key should have the Unix permission of 0400. To fix that, run the command:
chmod 0400 /path/to/private.key

D.   

The user can allocate a new IP address in VPC as it has a different limit than EC2

Section: (none)
A Virtual Private Cloud (VPC. is a virtual network dedicated to the user’s AWS account. A
user can create a subnet with VPC and launch instances inside that subnet. A user can
have 5 IP addresses per region with EC2 Classic. The user can have 5 separate IPs with
VPC in the same region as it has a separate limit than EC2 Classic.

D.   

The IP addresses belong to EC2 Classic; so they cannot be assigned to VPC

A Virtual Private Cloud (VPC. is a virtual network dedicated to the user’s AWS account. A
user can create a subnet with VPC and launch instances inside that subnet. When the user
is launching an instance he needs toselect an option which attaches a public IP to the
instance. If the user has not selected the option to attach the public IP then it will only have a private IP when launched. If the user wants to connect to an instance from the internet he
should create an elastic IP with VPC. If the elastic IP is a part of EC2 Classic it cannot be
assigned to a VPC instance.

D.   

Change the Enable button for notification to “No” in the RDS console

Amazon RDS uses the Amazon Simple Notification Service to provide a notification when
an Amazon RDS event occurs. Event notifications are sent to the addresses that the user
has provided while creating the subscription. The user can easily turn off the notification
without deleting a subscription by setting the Enabled radio button to No in the Amazon
RDS console or by setting the Enabled parameter to false using the CLI or Amazon RDS
API.

A.   

Yes, since SQS by default stores message for 4 days

SQS allows the user to move data between distributed components of applications so they
can perform
different tasks without losing messages or requiring each component to be always
available. Queues retain messages for a set period of time. By default, a queue retains
messages for four days. However, the user can configure a queue to retain messages for
up to 14 days after the message has been sent.

B.   

By default ELB will select the latest version of the policy

Elastic Load Balancing uses a Secure Socket Layer (SSL. negotiation configuration which is known as a
Security Policy. It is used to negotiate the SSL connections between a client and the load balancer. If the user has created an HTTPS/SSL listener without associating any security policy, Elastic Load Balancing will, bydefault, associate the latest version of the ELBSecurityPolicy-YYYY-MM with the load balancer.

D.   

as-terminate-instance-in-auto-scaling-group <Instance ID> --no-decrement-desiredcapacity

The Auto Scaling command as-terminate-instance-in-auto-scaling-group <Instance ID> will
terminate the
specific instance ID. The user is required to specify the parameter as –no-decrementdesired-
capacity to
ensure that it launches a new instance from the launch config after terminating the
instance. If the user
specifies the parameter -decrement-desired-capacity then Auto Scaling will terminate the
instance and
decrease the desired capacity by 1.

B.   

By default detailed monitoring is enabled for Auto Scaling

CloudWatch is used to monitor AWS as well as the custom services. It provides either
basic or detailed
monitoring for the supported AWS products. In basic monitoring, a service sends data
points to CloudWatch every five minutes, while in detailed monitoring a service sends data
points to CloudWatch every minute. To enable detailed instance monitoring for a new Auto
Scaling group, the user does not need to take any extra steps. When the user creates an
Auto Scaling launch config as the first step for creating an Auto Scaling group, each launch
configuration contains a flag named
InstanceMonitoring.Enabled. The default value of this flag is true. Thus, the user does not
need to set this flag if he wants detailed monitoring.