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試験番号：AWS-SysOps
試験科目：「AWS Certified SysOps Administrator - Associate」
一年間無料で問題集をアップデートするサービスを提供いたします
最近更新時間：2015-01-15
問題と解答：全302問 AWS-SysOps 合格体験談

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NO.1 A user has launched an EBS backed EC2 instance. The user has rebooted the instance. Which
of the below mentioned statements is not true with respect to the reboot action?
A. The private and public address remains the same
B. The Elastic IP remains associated with the instance
C. The volume is preserved
D. The instance runs on a new host computer
Answer: D

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Explanation:
A user can reboot an EC2 instance using the AWS console, the Amazon EC2 CLI or the Amazon EC2
API. Rebooting an instance is equivalent to rebooting an operating system. However, it is
recommended that the user use the Amazon EC2 to reboot the instance instead of running the
operating system reboot command from the instance. The instance remains on the same host
computer and maintains its public DNS name, private IP address, and any data on its instance store
volumes. It typically takes a few minutes for the reboot to complete, but the time it takes to reboot
depends on the instance configuration.

NO.2 A sys admin is trying to understand the sticky session algorithm. Please select the correct
sequence of steps, both when the cookie is present and when it is not, to help the admin understand
the implementation of the sticky session:
ELB inserts the cookie in the response ELB chooses the instance based on the load balancing
algorithm Check the cookie in the service request The cookie is found in the request The cookie is not
found in the request
A. 3,1,4,2 [Cookie is not Present] & 3,1,5,2 [Cookie is Present]
B. 3,4,1,2 [Cookie is not Present] & 3,5,1,2 [Cookie is Present]
C. 3,5,2,1 [Cookie is not Present] & 3,4,2,1 [Cookie is Present]
D. 3,2,5,4 [Cookie is not Present] & 3,2,4,5 [Cookie is Present]
Answer: C

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Explanation:
Generally AWS ELB routes each request to a zone with the minimum load. The Elastic Load Balancer
provides a feature called sticky session which binds the user's session with a specific EC2 instance.
The load balancer uses a special load-balancer-generated cookie to track the application instance for
each request. When the load balancer receives a request, it first checks to see if this cookie is present
in the request. If so, the request is sent to the application instance specified in the cookie. If there is
no cookie, the load balancer chooses an application instance based on the existing load balancing
algorithm. A cookie is inserted into the response for binding subsequent requests from the same user
to that application instance.

NO.3 An organization has setup consolidated billing with 3 different AWS accounts. Which of the
below mentioned advantages will organization receive in terms of the AWS pricing?
A. The consolidated billing does not bring any cost advantage for the organization
B. All AWS accounts will be charged for S3 storage by combining the total storage of each account
C. The EC2 instances of each account will receive a total of 750*3 micro instance hours free
D. The free usage tier for all the 3 accounts will be 3 years and not a single year
Answer: B

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Explanation:
AWS consolidated billing enables the organization to consolidate payments for multiple Amazon Web
Services (AWS. accounts within a single organization by making a single paying account. For billing
purposes, AWS treats all the accounts on the consolidated bill as one account. Some services, such as
Amazon EC2 and Amazon S3 have volume pricing tiers across certain usage dimensions that give the
user lower prices when he uses the service more.

NO.4 A user is launching an EC2 instance in the US East region. Which of the below mentioned
options is
recommended by AWS with respect to the selection of the availability zone?
A. Always select the US-East-1-a zone for HA
B. Do not select the AZ; instead let AWS select the AZ
C. The user can never select the availability zone while launching an instance
D. Always select the AZ while launching an instance
Answer: B

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Explanation:
When launching an instance with EC2, AWS recommends not to select the availability zone (AZ.. AWS
specifies that the default Availability Zone should be accepted. This is because it enables AWS to
select the best Availability Zone based on the system health and available capacity. If the user
launches additional instances, only then an Availability Zone should be specified. This is to specify the
same or different AZ from the running instances.

NO.5 A user has granted read/write permission of his S3 bucket using ACL. Which of the below
mentioned options is a valid ID to grant permission to other AWS accounts (grantee. using ACL?
A. IAM User ID
B. S3 Secure ID
C. Access ID
D. Canonical user ID
Answer: D

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Explanation:
An S3 bucket ACL grantee can be an AWS account or one of the predefined Amazon S3 groups. The
user can grant permission to an AWS account by the email address of that account or by the
canonical user ID. If the user provides an email in the grant request, Amazon S3 finds the canonical
user ID for that account and adds it to the ACL. The resulting ACL will always contain the canonical
user ID for the AWS account, and not the AWS account's email address.

NO.6 Your application currently leverages AWS Auto Scaling to grow and shrink as load Increases'
decreases and has been performing well Your marketing team expects a steady ramp up in traffic to
follow an upcoming campaign that will result in a 20x growth in traffic over 4 weeks Your forecast for
the approximate number of Amazon EC2 instances necessary to meet the peak demand is 175.
What should you do to avoid potential service disruptions during the ramp up in traffic?
A. Ensure that you have pre-allocated 175 Elastic IP addresses so that each server will be able to
obtain one as it launches
B. Check the service limits in Trusted Advisor and adjust as necessary so the forecasted count remains
within limits.
C. Change your Auto Scaling configuration to set a desired capacity of 175 prior to the launch of the
marketing campaign
D. Pre-warm your Elastic Load Balancer to match the requests per second anticipated during peak
demand prior to the marketing campaign
Answer: C

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NO.7 A user is trying to delete an Auto Scaling group from CLI. Which of the below mentioned steps
are to be performed by the user?
A. Terminate the instances with the ec2-terminate-instance command
B. Terminate the Auto Scaling instances with the as-terminate-instance command
C. Set the minimum size and desired capacity to 0
D. There is no need to change the capacity. Run the as-delete-group command and it will reset all
values to 0
Answer: C

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Explanation:
If the user wants to delete the Auto Scaling group, the user should manually set the values of the
minimum and desired capacity to 0. Otherwise Auto Scaling will not allow for the deletion of the
group from CLI. While trying from the AWS console, the user need not set the values to 0 as the Auto
Scaling console will automatically do so.

NO.8 You are using ElastiCache Memcached to store session state and cache database queries in your
infrastructure You notice in Cloud Watch that Evictions and GetMisses are Doth very high.
What two actions could you take to rectify this?
Choose 2 answers
A. Increase the number of nodes in your cluster
B. Tweak the max-item-size parameter
C. Shrink the number of nodes in your cluster
D. Increase the size of the nodes in the duster
Answer: B,D

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