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2016/10 New Amazon AWS Certified Solutions Architect – Associate Exam Questions Released Today!
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QUESTION 16
EBS Snapshots occur _____

A.    Asynchronously
B.    Synchronously
C.    Weekly

Answer: A
Explanation:
Snapshots occur asynchronously; the point-in-time snapshot is created immediately, but the status of the snapshot is pending until the snapshot is complete (when all of the modified blocks have been transferred to Amazon S3), which can take several hours for large initial snapshots or subsequent snapshots where many blocks have changed.
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-creating-snapshot.html

QUESTION 17
Disabling automated backups ______ disable the point-in-time recovery.

A.    if configured to can
B.    will never
C.    will

Answer: C

QUESTION 18
Out of the stripping options available for the EBS volumes, which one has the following disadvantage :
‘Doubles the amount of I/O required from the instance to EBS compared to RAID 0, because you’re mirroring all writes to a pair of volumes, limiting how much you can stripe.’ ?

A.    Raid 0
B.    RAID 1+0 (RAID 10)
C.    Raid 1
D.    Raid

Answer: C
Explanation:
http://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/raid-config.html
raid 0 and 1 are the common types. Raid 5 and 6 are not recommended because of the extended stripe. If you encounter this question on the exam I suspect the answer options will be different.
Raid 1 Disadvantage
Does not provide a write performance improvement; requires more Amazon EC2 to Amazon EBS bandwidth than non-RAID configurations because the data is written to multiple volumes simultaneously.
Raid 0 Disadvantage
Performance of the stripe is limited to the worst performing volume in the set. Loss of a single volume results in a complete data loss for the array.
Raid 5 and 6 notes
RAID 5 and RAID 6 are not recommended for Amazon EBS because the parity write operations of these RAID modes consume some of the IOPS available to your volumes. Depending on the configuration of your RAID array, these RAID modes provide 20-30% fewer usable IOPS than a RAID 0 configuration. Increased cost is a factor with these RAID modes as well; when using identical volume sizes and speeds, a 2-volume RAID 0 array can outperform a 4-volume RAID 6 array that costs twice as much.

QUESTION 19
Is creating a Read Replica of another Read Replica supported?

A.    Only in certain regions
B.    Only with MSSQL based RDS
C.    Only for Oracle RDS types
D.    No

Answer: B
Explanation:
https://aws.amazon.com/rds/faqs/
Q: Can I create a Read Replica of another Read Replica?
Amazon RDS for MySQL: You can create a second-tier Read Replica from an existing first-tier Read Replica. By creating a second-tier Read Replica, you may be able to move some of the replication load from the master database instance to a first-tier Read Replica. Please note that a second-tier Read Replica may lag further behind the master because of additional replication latency introduced as transactions are replicated from the master to the first tier replica and then to the second-tier replica.
Amazon RDS for PostgreSQL: Read Replicas of Read Replicas are not currently supported.

QUESTION 20
Can Amazon S3 uploads resume on failure or do they need to restart?

A.    Restart from beginning
B.    You can resume them, if you flag the “resume on failure” option before uploading.
C.    Resume on failure
D.    Depends on the file size

Answer: C

QUESTION 21
Which of the following cannot be used in Amazon EC2 to control who has access to specific Amazon EC2 instances?

A.    Security Groups
B.    IAM System
C.    SSH keys
D.    Windows passwords

Answer: B
Explanation:
http://blogs.aws.amazon.com/security/post/Tx29HCT3ABL7LP3/Resource-level-Permissions-for-EC2-Controlling-Management-Access-on-Specific-Ins

QUESTION 22
Fill in the blanks: _________ let you categorize your EC2 resources in different ways, for example, by purpose, owner, or environment.

A.    wildcards
B.    pointers
C.    Tags
D.    special filters

Answer: C

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