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Q91. What is the maximum write throughput I can provision for a single Dynamic DB table?
A. 1,000 write capacity units
B. 100,000 write capacity units
C. Dynamic DB is designed to scale without limits, but if you go beyond 10,000 you have to contact AWS first.
D. 10,000 write capacity units
Answer: C
Q92. Which of the following statements is true of Amazon EC2 security groups?
A. You can change the outbound rules for EC2-Classic. Also, you can add and remove rules to a group at any time.
B. You can modify an existing rule in a group. However, you can't add and remove rules to a group.
C. None of the statements are correct.
D. You can't change the outbound rules for EC2-Classic. However, you can add and remove rules to a
group at any time.
Answer: D
Explanation:
When dealing with security groups, bear in mind that you can freely add and remove rules from a group, but you can't change the outbound rules for EC2-Classic. If you're using the Amazon EC2 console, you can modify existing rules, and you can copy the rules from an existing security group to a new security group.
Reference: http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/using-network-security.htmI
Q93. If you have chosen Multi-AZ deployment, in the event of a planned or unplanned outage of your primary DB Instance, Amazon RDS automatically switches to the standby replica. The automatic failover mechanism simply changes the record of the main DB Instance to point to the standby DB Instance.
A. DNAME
B. CNAME
C. TXT
D. MX
Answer: B
Q94. Doug has created a VPC with CIDR 10.201.0.0/16 in his AWS account. In this VPC he has created a public subnet with CIDR block 10.201.31.0/24. While launching a new EC2 from the console, he is not able to assign the private IP address 10.201.31.6 to this instance. Which is the most likely reason for this issue?
A. Private IP address 10.201.31.6 is blocked via ACLs in Amazon infrastructure as a part of platform security.
B. Private address IP 10.201.31.6 is currently assigned to another interface.
C. Private IP address 10.201.31.6 is not part of the associated subnet's IP address range.
D. Private IP address 10.201.31.6 is reserved by Amazon for IP networking purposes.
Answer: B
Explanation:
In Amazon VPC, you can assign any Private IP address to your instance as long as it is: Part of the associated subnet's IP address range
Not reserved by Amazon for IP networking purposes Not currently assigned to another interface Reference: http://aws.amazon.com/vpc/faqs/
Q95. Select the correct statement: Within Amazon EC2, when using Linux instances, the device name
/dev/sda1 is .
A. reserved for EBS volumes
B. recommended for EBS volumes
C. recommended for instance store volumes
D. reserved for the root device
Answer: D
Explanation:
Within Amazon EC2, when using a Linux instance, the device name /dev/sda1 is reserved for the root device.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/device_naming.htmI
Q96. Out of the stripping options available for the EBS volumes, which one has the following disadvantage : 'Doubles the amount of 1/0 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: B
Q97. Can we attach an EBS volume to more than one EC2 instance at the same time?
A. Yes.
B. No
C. Only EC2-optimized EBS volumes.
D. Only in read mode.
Answer: A
Q98. You havejust discovered that you can upload your objects to Amazon S3 using MuItipart Upload API. You start to test it out but are unsure of the benefits that it would provide. Which of the following is not a benefit of using multipart uploads?
A. You can begin an upload before you know the final object size.
B. Quick recovery from any network issues.
C. Pause and resume object uploads.
D. It's more secure than normal upload.
Answer: D
Explanation:
MuItipart upload in Amazon S3 allows you to upload a single object as a set of parts. Each part is a contiguous portion ofthe object's data. You can upload these object parts independently and in any order.
If transmission of any part fails, you can re-transmit that part without affecting other parts. After all parts of your object are uploaded, Amazon S3 assembles these parts and creates the object. In general, when
your object size reaches 100 MB, you should consider using multipart uploads instead of uploading the object in a single operation.
Using multipart upload provides the following advantages:
Improved throughput—You can upload parts in parallel to improve throughput.
Quick recovery from any network issues—SmaIIer part size minimizes the impact of restarting a failed upload due to a network error.
Pause and resume object upIoads—You can upload object parts over time. Once you initiate a multipart upload there is no expiry; you must explicitly complete or abort the multipart upload.
Begin an upload before you know the final object size—You can upload an object as you are creating it. Reference: http://docs.aws.amazon.com/AmazonS3/latest/dev/uploadobjusingmpu.htmI
Q99. An accountant asks you to design a small VPC network for him and, due to the nature of his business, just needs something where the workload on the network will be low, and dynamic data will be accessed infrequently. Being an accountant, low cost is also a major factor. Which EBS volume type would best suit his requirements?
A. Magnetic
B. Any, as they all perform the same and cost the same.
C. General Purpose (SSD)
D. Magnetic or Provisioned IOPS (SSD)
Answer: A
Explanation:
You can choose between three EBS volume types to best meet the needs of their workloads: General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic. General Purpose (SSD) is the new, SSD-backed, general purpose EBS volume type that we recommend as the default choice for customers. General Purpose (SSD) volumes are suitable for a broad range of workloads, including small to medium sized databases, development and test environments, and boot volumes. Provisioned IOPS (SSD) volumes offer storage with consistent and low-latency performance, and are designed for I/O intensive applications such as large relational or NoSQL databases. Magnetic volumes provide the lowest cost per gigabyte of all EBS volume types. Magnetic volumes are ideal for workloads where data is accessed infrequently, and applications where the lowest storage cost is important.
Reference: https://aws.amazon.com/ec2/faqs/
Q100. Read Replicas require a transactional storage engine and are only supported for the _ _ storage engine
A. OracIeISAM
B. MSSQLDB
C. InnoDB
D. IV|y|SAIV|
Answer: C