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Q51. A major client who has been spending a lot of money on his internet service provider asks you to set up an AWS Direct Connection to try and save him some money. You know he needs high-speed connectMty. Which connection port speeds are available on AWS Direct Connect?
A. 500Mbps and 1Gbps
B. 1Gbps and 10Gbps
C. 100Mbps and 1Gbps
AWS Direct Connect is a network service that provides an alternative to using the internet to utilize AWS cloud services.
Using AWS Direct Connect, data that would have previously been transported over the Internet can now be delivered through a private network connection between AWS and your datacenter or corporate network.
1Gbps and 10Gbps ports are available. Speeds of 50Mbps, 100Mbps, 200Mbps, 300Mbps, 400Mbps, and 500Mbps can be ordered from any APN partners supporting AWS Direct Connect.
Q52. You need to change some settings on Amazon Relational Database Service but you do not want the database to reboot immediately which you know might happen depending on the setting that you change. Which of the following will cause an immediate DB instance reboot to occur?
A. You change storage type from standard to PIOPS, and Apply Immediately is set to true.
B. You change the DB instance class, and Apply Immediately is set to false.
C. You change a static parameter in a DB parameter group.
D. You change the backup retention period for a DB instance from 0 to a nonzero value or from a nonzero value to 0, and Apply Immediately is set to false.
A DB instance outage can occur when a DB instance is rebooted, when the DB instance is put into a state that prevents access to it, and when the database is restarted. A reboot can occur when you manually reboot your DB instance or when you change a DB instance setting that requires a reboot before it can take effect.
A DB instance reboot occurs immediately when one of the following occurs:
You change the backup retention period for a DB instance from 0 to a nonzero value or from a nonzero value to 0 and set Apply Immediately to true.
You change the DB instance class, and Apply Immediately is set to true.
You change storage type from standard to PIOPS, and Apply Immediately is set to true.
A DB instance reboot occurs during the maintenance window when one of the following occurs:
You change the backup retention period for a DB instance from 0 to a nonzero value or from a nonzero value to 0, and Apply Immediately is set to false.
You change the DB instance class, and Apply Immediately is set to false. Reference:
Q53. Amazon EBS provides the ability to create backups of any Amazon EC2 volume into what is known as
C. instance backups
Amazon allows you to make backups of the data stored in your EBS volumes through snapshots that can later be used to create a new EBS volume.
Q54. What does Amazon Route53 provide?
A. A global Content Delivery Network.
B. None of these.
C. A scalable Domain Name System.
D. An SSH endpoint for Amazon EC2.
Q55. Name the disk storage supported by Amazon Elastic Compute Cloud (EC2).
A. None of these
B. Amazon AppStream store
C. Amazon SNS store
D. Amazon Instance Store
Amazon EC2 supports the following storage options: Amazon Elastic Block Store (Amazon EBS) Amazon EC2 Instance Store Amazon Simple Storage Service (Amazon S3)
Q56. Your department creates regular analytics reports from your company's log files All log data is collected in Amazon 53 and processed by daily Amazon Elastic MapReduce (EMR) jobs that generate daily PDF reports and aggregated tables in CSV format for an Amazon Redshift data warehouse.
Your CFO requests that you optimize the cost structure for this system.
Which of the following alternatives will lower costs without compromising average performance of the system or data integrity for the raw data?
A. Use reduced redundancy storage (RRS) for all data In 53. Use a combination of Spot Instances and Reserved Instances for Amazon EMR jobs. Use Reserved Instances for Amazon Redshift.
B. Use reduced redundancy storage (RRS) for PDF and .csv data in 53. Add Spot Instances to EMR jobs. Use Spot Instances for Amazon Redshift.
C. Use reduced redundancy storage (RRS) for PDF and .csv data In Amazon 53. Add Spot Instances to Amazon EMR jobs. Use Reserved Instances for Amazon Redshift.
D. Use reduced redundancy storage (RRS) for all data in Amazon 53. Add Spot Instances to Amazon EMR jobs. Use Reserved Instances for Amazon Redshift.
Using Reduced Redundancy Storage
Amazon 53 stores objects according to their storage class. It assigns the storage class to an object when it is written to Amazon 53. You can assign objects a specific sto rage class (standard or reduced redundancy) only when you write the objects to an Amazon 53 bucket or when you copy objects that are already stored in Amazon 53. Standard is the default storage class. For information about storage classes, see Object Key and Metadata.
In order to reduce storage costs, you can use reduced redundancy storage for noncritical, reproducible data at lower levels of redundancy than Amazon 53 provides with standard storage. The lower level of redundancy results in less durability and availability, but in many cases, the lower costs can make
reduced redundancy storage an acceptable storage solution. For example, it can be a cost effective solution for sharing media content that is durably stored elsewhere. It can also make sense if you are storing thumbnails and other resized images that can be easily reproduced from an original image. Reduced redundancy storage is designed to provide 99.99% durability of objects over a given year.
This durability level corresponds to an average annual expected loss of 0.01% of objects. For example, if you store 10,000 objects using the RRS option, you can, on average, expect to incur an annual loss of a single object per year (0.01% of 10,000 objects).
This annual loss represents an expected average and does not guarantee the loss of less than 0.01% of objects in a given year.
Reduced redundancy storage stores objects on multiple devices across multiple facilities, providing 400 times the durability of a typical disk drive, but it does not replicate objects as many times as Amazon 53 standard storage. In addition, reduced redundancy storage is designed to sustain the loss of data in a single facility.
If an object in reduced redundancy storage has been lost, Amazon 53 will return a 405 error on requests made to that object. Amazon 53 also offers notifications for reduced redundancy storage object loss: you can configure your bucket so that when Amazon 53 detects the loss of an RRS object, a notification will be sent through Amazon Simple Notification Service (Amazon SNS). You can then replace the lost object. To enable notifications, you can use the Amazon 53 console to set the Notifications property of your bucket.
Q57. A user has launched one EC2 instance in the US East region and one in the US West region. The user has launched an RDS instance in the US East region. How can the user configure access from both the EC2 instances to RDS?
A. It is not possible to access RDS of the US East region from the US West region
B. Configure the US West region’s security group to allow a request from the US East region’s instance and configure the RDS security group’s ingress rule for the US East EC2 group
C. Configure the security group of the US East region to allow traffic from the US West region’s instance and configure the RDS security group’s ingress rule for the US East EC2 group
D. Configure the security group of both instances in the ingress rule of the RDS security group
The user cannot authorize an Amazon EC2 security group if it is in a different AWS Region than the RDS
DB instance. The user can authorize an IP range or specify an Amazon EC2 security group in the same region that refers to an IP address in another region. In this case allow IP of US West inside US East’s security group and open the RDS security group for US East region.
Q58. You need to create a management network using network interfaces for a virtual private cloud (VPC) network. Which of the following statements is incorrect pertaining to Best Practices for Configuring Network Interfaces.
A. You can detach secondary (ethN) network interfaces when the instance is running or stopped. However, you can't detach the primary (eth0) interface.
B. Launching an instance with multiple network interfaces automatically configures interfaces, private IP addresses, and route tables on the operating system of the instance.
C. You can attach a network interface in one subnet to an instance in another subnet in the same VPC, however, both the network interface and the instance must reside in the same Availability Zone.
D. Attaching another network interface to an instance is a valid method to increase or double the network bandwidth to or from the dual-homed instance
Best Practices for Configuring Network Interfaces
You can attach a network interface to an instance when it's running (hot attach), when it's stopped (warm attach), or when the instance is being launched (cold attach).
You can detach secondary (ethN) network interfaces when the instance is running or stopped. However, you can't detach the primary (eth0) interface.
You can attach a network interface in one subnet to an instance in another subnet in the same VPC, however, both the network interface and the instance must reside in the same Availability Zone.
When launching an instance from the CLI or API, you can specify the network interfaces to attach to the instance for both the primary (eth0) and additional network interfaces.
Launching an instance with multiple network interfaces automatically configures interfaces, private IP addresses, and route tables on the operating system of the instance.
A warm or hot attach of an additional network interface may require you to manually bring up the second interface, configure the private IP address, and modify the route table accordingly. (Instances running Amazon Linux automatically recognize the warm or hot attach and configure themselves.)
Attaching another network interface to an instance is not a method to increase or double the network bandwidth to or from the dual-homed instance.
Q59. Your customer wishes to deploy an enterprise application to AWS which will consist of several web servers, several application servers and a small (50GB) Oracle database information is stored, both in the database and the file systems of the various servers. The backup system must support database recovery whole server and whole disk restores, and indMdual file restores with a recovery time of no more than two hours. They have chosen to use RDS Oracle as the database
Which backup architecture will meet these requirements?
A. Backup RDS using automated daily DB backups Backup the EC2 instances using AMs and
supplement with file-level backup to 53 using traditional enterprise backup software to provide fi Ie level restore
B. Backup RDS using a Multi-AZ Deployment Backup the EC2 instances using Amis, and supplement by copying file system data to 53 to provide file level restore.
C. Backup RDS using automated daily DB backups Backup the EC2 instances using EBS snapshots and supplement with file-level backups to Amazon Glacier using traditional enterprise backup software to provide file level restore
D. Backup RDS database to 53 using Oracle RMAN Backup the EC2 instances using Amis, and supplement with EBS snapshots for indMdual volume restore.
In addition to the daily automated backup, Amazon RDS archives database change logs. This enables you to recover your database to any point in time during the backup retention period, up to the last five minutes of database usage.
Amazon RDS stores multiple copies of your data, but for Single-AZ DB instances these copies are stored in a single availability zone. If for any reason a Single-AZ DB instance becomes unusable, you can use point-in-time recovery to launch a new DB instance with the latest restorable data. For more information on working with point-in-time recovery, go to Restoring a DB Instance to a Specified Time.
Mu|ti-AZ deployments store copies of your data in different Availability Zones for greater levels of data durability. For more information on Multi-AZ deployments, see High Availability (MuIti-AZ).
Q60. You have been setting up an Amazon Virtual Private Cloud (Amazon VPC) for your company, including setting up subnets. Security is a concern, and you are not sure which is the best security practice for securing subnets in your VPC. Which statement below is correct in describing the protection of AWS resources in each subnet?
A. You can use multiple layers of security, including security groups and network access control lists (ACL).
B. You can only use access control lists (ACL).
C. You don't need any security in subnets.
D. You can use multiple layers of security, including security groups, network access control lists (ACL) and CIoudHSM.
A subnet is a range of IP addresses in your VPC. You can launch AWS resources into a subnet that you select. Use a public subnet for resources that must be connected to the Internet, and a private subnet for resources that won't be connected to the Internet.
To protect the AWS resources in each subnet, you can use multiple layers of security, including security groups and network access control lists (ACL).