SAP 题库 351-400
作者：互联网
Q351. You want to establish redundant VPN connections and customer gateways on your network by setting up a second VPN connection. Which of the following will ensure that this functions correctly?
A. The customer gateway IP address for the second VPN connection must be publicly accessible.
B. The virtual gateway IP address for the second VPN connection must be publicly accessible.
C. The customer gateway IP address for the second VPN connection must use dynamic routes.
D. The customer gateway IP address for the second VPN connection must be privately accessible and be the same public IP address that you are using for the first VPN connection.
Answer: A
Q352. Someone is creating a VPC for their application hosting. He has created two private subnets in the same availability zone and created one subnet in a separate availability zone. He wants to make a Hight Availability system with an internal Elastic Load Balancer. Which choice is true regarding internal ELBs in this scenario? (Choose 2 answers)
A. Internal ELBs should only be launched within private subnets.
B. Amazon ELB service does not allow subnet selection; instead it will automatically select all the available subnets of the VPC.
C. Internal ELBs can support only one subnet in each availability zone.
D. An internal ELB can support all the subnets irrespective of their zones.
Answer: AC
Q353. To ensure failover capabilities on an elastic network interface (ENI), what should you use for incoming traffic?
A. A Route53 A record
B. A secondary private IP
C. A secondary public IP
D. A secondary ENI
Answer: B
Q354. An organization is setting up a highly scalable application using Elastic Beanstalk. The organization is using ELB and RDS with VPC. The organization has public and private subnets within the cloud.
Which of the below mentioned configurations will not work in this scenario?
A. To setup RDS in a private subnet and ELB in a public subnet.
B. The configuration must have public and private subnets in the same AZ.
C. The configuration must have two private subnets in separate AZs.
D. The EC2 instance should have a public IP assigned to it.
Answer: D
Q355. In DynamoDB, a projection is ______.
A. systematic transformation of the latitudes and longitudes of the locations inside your table
B. importing data from your file to a table
C. exporting data from a table to your file
D. the set of attributes that is copied from a table into a secondary index
Answer: D
Q356. Which of the following is NOT true of the DynamoDB Console?
A. It allows you to add local secondary indexes to existing tables.
B. It allows you to query a table.
C. It allows you to set up alarms to monitor your table's capacity usage.
D. It allows you to view items stored in a tables, add, update, and delete items.
Answer: A
Q357. DynamoDB uses _____ only as a transport protocol, not as a storage format.
A. WDDX
B. XML
C. SGML
D. JSON
Answer: D
Q358. In DynamoDB, which of the follwoing allows you to set alarms when you reach a specified threshold for a metric?
A. Alarm Signal
B. DynamoDB Analyzer
C. CloudWatch
D. DynamoDBALARM
Answer: C
Q359. Is it possible to load data from Amazon DynamoDB into Amazon Redshift?
A. No, you cannot load all the data from DynamoDB table to a Redshift table as it limited by size constraints.
B. No
C. No, DynamoDB data types do not correspond directly with those of Amazon Redshift.
D. Yes
Answer: D
Q360. In regard to DynamoDB, when you create a table with a hash-and-range key _________________
A. You must define one or more Local secondary indexes on that table
B. You must define one or more Global secondary indexes on that table
C. You can optionally define one or more secondary indexes on that table
D. You must define one or more secondary indexes on that table
Answer: C
Q361. Someone has recommended a new client to you and you know he is into online gaming and you are almost certain he will want to set up an online gaming site which will require a database service that provides fast and predictable performance with seamless scalability. Which of the following AWS databases would be best suited to an online gaming site?
A. Amazon SimpleDB
B. Amazon DynamoDB
C. Amazon Redshift
D. Amazon ElastiCache
Answer: B
Q362. In DynamoDB, "The data is eventually consistent" means that ____________.
A. a read request immediately after a write operation might not show the latest change.
B. a read request immediately after a write operation shows the latest change.
C. a write request immediately after a read operation might cause data loss.
D. a read request immediately after a write operation might cause data loss.
Answer: A
Q363. ______________ pricing offers significant savings over the normal price of DynamoDB provisioned throughput capacity.
A. Discount Voucher
B. Reserved Capacity
C. Discount Service
D. Reserved Point
Answer: B
Q364. In DynamoDB, which of the following operations is not possible by the console?
A. Updating an item
B. Copying an item
C. Blocking an itemD. Deleting an item
Answer: C
Q365. In order for a table write to succeed, the provisioned throughput settings for the table and global secondary indexes, in DynamoDB, must have __________; otherwise, the write to the table will be throttled.
A. enough write capacity to accommodate the write
B. no additional write cost for the index
C. 100 bytes of overhead per index item
D. the size less than or equal to 1 KB
Answer: A
Q366. In DynamoDB, to get a detailed listing of secondary indexes on a table, you can use the _____ action.
A. BatchGetItem
B. TableName
C. DescribeTable
D. GetItem
Answer: C
Q367. In regard to DynamoDB, for which one of the following parameters does Amazon not charge you?
A. Storage cost
B. I/O usage within the same Region
C. Cost per provisioned read units
D. Cost per provisioned write units
Answer: B
Q368. Complete this statemente: "When you load your table directly from an Amazon ___________ table, you have the option to control the amount of provisioned throughput you consume."
A. RDS
B. DataPipeline
C. DynamoDB
D. S3
Answer: C
Q369. Which of the following does Amazon DynamoDB perform?
A. Atomic increment or decrement on scalar values
B. Neither increment nor decrement operations
C. Only increment on vector values
D. Only atomic decrement operations
Answer: A
Q370. A Provisioned IOPS volume must be at least _____ GB in size
A. 20
B. 10
C. 50
D. 1
Answer: B
Q371. A user has launched two EBS backed EC2 instances in the US-East-1a region. The user wants to change the zone of one of the instances. How can the user change it?
A. It is not possible to change the zone of an instance after it is launched
B. From the AWS EC2 console, select the Actions - > Change zones and specify the new zone
C. The zone can only be modified using the AWS CLI
D. Stop one of the instances and change the availability zone
Answer: A
Q372. In Amazon Elastic Compute Cloud, you can specify storage volumes in addition to the root device volume when you create an AMI or when launching a new instance using _____.
A. block device mapping
B. object mapping
C. batch storage mapping
D. datacenter mapping
Answer: A
Q373. You create an Amazon Elastic File System (EFS) file system and mount targets for the file system in your Virtual Private Cloud (VPC). Identify the initial permissions you can grant to the group root of your file system.
A. write-execute-modify
B. read-execute
C. read-write-modify
D. read-write
Answer: B
Q374. You want to mount an Amazon EFS file system on an Amazon EC2 instance using DNS names. Which of the following generic form of a mount target's DNS name must you use to mount the file system?
A. availability-zone.file-system-id.efs.aws-region.amazonaws.com
B. efs-system-id.availability-zone.file-aws-region.amazonaws.com
C. $file-system-id.$availability-zone.$efs.aws-region.$amazonaws.com
D. #aws-region.#availability-zone.#file-system-id.#efs.#amazonaws.com
Answer: A
Q375. A user is creating a Provisioned IOPS volume. What is the maximum ratio the user should configure between Provisioned IOPS and the volume size?
A. 30 to 1
B. 50 to 1
C. 10 to 1
D. 20 to 1
Answer: D
Q376. Your Application is not highly available, and your on-premises server cannot access the mount target because the Availability Zone (AZ) in which the mount target exists is unavailable.
Which of the following actions is recommended?
A. The application must implement the checkpoint logic and recreate the mount target.
B. The application must implement the shutdown logic and delete the mount target in the AZ.
C. The application must implement the delete logic and connect to a different mount target in the same AZ.
D. The application must implement the restart logic and connect to a mount target in a different AZ.
Answer: D
Q377. Which of the following Amazon RDS storage types is ideal for applications with light or burst I/O requirements?
A. Both magnetic and Provisioned IOPS storage
B. Magnetic storage
C. Provisioned IOPS storage
D. None of these
Answer: B
Q378. When I/O performance is more important than fault tolerance, which of the following configurations should be used?
A. SPAN 10
B. RAID 1
C. RAID 0
D. NFS 1
Answer: C
Q379. Amazon Elastic File System (EFS) provides information about the space used for an object by using the space_used attribute of the Network File System Version 4.1 (NFSv4.1). The attribute includes the object's current metered data size and not the metadata size. Which of the following utilities will you use to measure the amount of disk that is used of a file?
A. blkid utility
B. du utility
C. sfdisk utility
D. pydf utility
Answer: B
Q380. You have custom Network File System (NFS) client settings for your Amazon Elastic File System (EFS). It takes up to three seconds for an Amazon Elastic Compute Cloud (EC2) instance to see a write operation performed on a file system from another Amazon EC2 instance. Which of the following actions should you take to solve the custom NFS settings from causing delays in the write operation?
A. Unmount and remount the file system with the noac option to disable attribute caching.
B. Reduce the number of active users that have files open simultaneously on the instances.
C. Verify that the IP address of the specified mount target is valid.
D. Run the write operation from a different user ID on the same Amazon EC2 instance.
Answer: A
Q381. Which of the following rules must be added to a mount target security group to access Amazon Elastic File System (EFS) from an on-premises server?
A. Configure an NFS proxy between Amazon EFS and the on-premises server to route traffic.
B. Set up a Point-To-Point Tunneling Protocol Server (PPTP) to allow secure connection.
C. Permit secure traffic to the Kerberos port 88 from the on-premises server.
D. Allow inbound traffic to the Network File System (NFS) port (2049) from the on-premises server.
Answer: D
Q382. Which of the following is true of Amazon EBS encryption keys?
A. Amazon EBS encryption uses the Customer Master Key (CMK) to create an AWS Key Management Service (AWS KMS) master key.
B. Amazon EBS encryption uses the EBS Magnetic key to create an AWS Key Management Service (AWS KMS) master key.
C. Amazon EBS encryption uses the EBS Magnetic key to create a Customer Master Key (CMK).
D. Amazon EBS encryption uses the AWS Key Management Service (AWS KMS) master key to create a Customer Master Key (CMK).
Answer: D
Q383. A user is creating a snapshot of an EBS volume. Which of the below statements is incorrect in relation to the creation of an EBS snapshot?
A. Its incremental
B. It is a point in time backup of the EBS volume
C. It can be used to create an AMI
D. It is stored in the same AZ as the volume
Answer: D
Q384. A user is running a critical batch process which runs for 1 hour and 50 mins every day at a fixed time. Which of the below mentioned options is the right instance type and costing model in this case if the user performs the same task for the whole year?
A. Instance store backed instance with spot instance pricing.
B. EBS backed instance with standard reserved upfront instance pricing.
C. EBS backed scheduled reserved instance with partial instance pricing.
D. EBS backed instance with on-demand instance pricing.
Answer: D
Q385. A user has created a launch configuration for Auto Scaling where CloudWatch detailed monitoring is disabled. The user wants to now enable detailed monitoring. How can the user achieve this?
A. Update the Launch config with CLI to set InstanceMonitoringDisabled = false
B. The user should change the Auto Scaling group from the AWS console to enable detailed monitoring
C. Create a new Launch Config with detail monitoring enabled and update the Auto Scaling group
D. Update the Launch config with CLI to set InstanceMonitoring.Enabled = true
Answer: C
Q386. A user is sending a custom metric to CloudWatch. If the call to the CloudWatch APIs has different dimensions, but the same metric name, how will CloudWatch treat all the requests?
A. It will reject the request as there cannot be a separate dimension for a single metric.
B. It will group all the calls into a single call.
C. It will treat each unique combination of dimensions as a separate metric.
D. It will overwrite the previous dimension data with the new dimension data.
Answer: C
Q387. What is the maximum number of data points for an HTTP data request that a user can include in PutMetricRequest in the CloudWatch?
A. 30
B. 50
C. 10
D. 20
Answer: D
Q388. You have set up a huge amount of network infrastructure in AWS and you now need to think about monitoring all of this. You decide CloudWatch will best fit your needs but you are unsure of the pricing structure and the limitations of CloudWatch. Which of the following statements is TRUE in relation to the limitations of CloudWatch?
A. You get 10 CloudWatch metrics, 10 alarms, 1,000,000 API requests, and 1,000 Amazon SNS email notifications per customer per month for free.
B. You get 100 CloudWatch metrics, 100 alarms, 10,000,000 API requests, and 10,000 Amazon SNS email notifications per customer per month for free.
C. You get 10 CloudWatch metrics, 10 alarms, 1,000 API requests, and 100 Amazon SNS email notifications per customer per month for free.
D. You get 100 CloudWatch metrics, 100 alarms, 1,000,000 API requests, and 1,000 Amazon SNS email notifications per customer per month for free.
Answer: A
Q389. A user is trying to send custom metrics to CloudWatch using the PutMetricData APIs.
Which of the below mentioned points should the user needs to take care while sending the data to CloudWatch?
A. The size of a request is limited to 8KB for HTTP GET requests and 40KB for HTTP POST requests
B. The size of a request is limited to 16KB for HTTP GET requests and 80KB for HTTP POST requests
C. The size of a request is limited to 128KB for HTTP GET requests and 64KB for HTTP POST requests
D. The size of a request is limited to 40KB for HTTP GET requests and 8KB for HTTP POST requests
Answer: A
Q390. You set up your first Lambda function and want to set up some Cloudwatch metrics to onitor your function. Which of the following Lambda metrics can Cloudwatch monitor?
A. Total requests only
B. Status Check Failed, total requests, and error rates
C. Total requests and CPU utilization
D. Total invocations, errors, duration, and throttles
Answer: D
Q391. How many metrics are supported by CloudWatch for Auto Scaling ?
A. 7 metrics and 5 dimension
B. 5 metrics and 1 dimension
C. 1 metric and 5 dimensions
D. 8 metrics and 1 dimension
Answer: D
Q392. A user has enabled detailed CloudWatch monitoring with the AWS Simple Notification Service. Which of the below mentioned statements helps the user understand detailed monitoring better?
A. SNS cannot provide data every minute
B. SNS will send data every minute after configuration
C. There is no need to enable since SNS provides data every minute
D. AWS CloudWatch does not support monitoring for SNS
Answer: A
Q393. An AWS account owner has setup multiple IAM users. One of these IAM users, named John, has CloudWatch access, but no access to EC2 services. John has setup an alarm action which stops EC2 instances when their CPU utilization is below the threshold limit. When an EC2 instance's CPU Utilization rate drops below the threshold John has set, what will happen and why?
A. CloudWatch will stop the instance when the action is executed
B. Nothing will happen. John cannot set an alarm on EC2 since he does not have the permission.
C. Nothing will happen. John can setup the action, but it will not be executed because he does not have EC2 access through IAM policies.
D. Nothing will happen because it is not possible to stop the instance using the CloudWatch alarm
Answer: C
Q394. A user has configured an EC2 instance in the US-East-1a zone. The user has enabled detailed monitoring of the instance. The user is trying to get the data from CloudWatch using a CLI. Which of the below mentioned CloudWatch endpoint URLs should the user use?
A. monitoring.us-east-1a.amazonaws.com
B. cloudwatch.us-east-1a.amazonaws.com
C. monitoring.us-east-1.amazonaws.com
D. monitoring.us-east-1-a.amazonaws.com
Answer: C
Q395. Which of the following is not included in the metrics sent from Billing to Amazon CloudWatch?
A. Recurring fees for AWS products and services
B. Total AWS charges
C. One-time charges and refunds
D. Usage charges for AWS products and services
Answer: C
Q396. After your Lambda fuction has been running for some time, you need to look at some metrics to ascertain how your function is performing and decide to use the AWS CLI to do this.
Which of the following commands must be used to access these metrics using the AWS CLI?
A. mon-list-metrics and mon-get-stats
B. list-metrics and get-metric-statistics
C. ListMetrics and GetMetricStatistics
D. list-metrics and mon-get-stats
Answer: B
Q397. In Amazon CloudWatch, you can publish your own metrics with the put-metric-data command. When you create a new metric using the put-metric-data command, it can take up to two minutes before you can retrieve statistics on the new metric using the get-metric-statistics command. How long does it take before the new metric appears in the list of metrics retrieved using the list- metrics command?
A. After 2 minutes
B. Up to 15 minutes
C. More than an hour
D. Within a minute
Answer: B
Q398. A user is running a batch process on EBS backed EC2 instances. The batch process launches few EC2 instances to process hadoop Map reduce jobs which can run between 50 to 600 minutes or sometimes for even more time. The user wants a configuration that can terminate the instance only when the process is completed. How can the user configure this with CloudWatch?
A. Configure a job which terminates all instances after 600 minutes
B. It is not possible to terminate instances automatically
C. Configure the CloudWatch action to terminate the instance when the CPU utilization falls below 5%
D. Set up the CloudWatch with Auto Scaling to terminate all the instances
Answer: C
Q399. A user is trying to understand the detailed CloudWatch monitoring concept. Which of the below mentioned services does not provide detailed monitoring with CloudWatch?
A. AWS RDS
B. AWS ELB
C. AWS Route53
D. AWS EMR
Answer: D
Q400. A company runs a legacy system on a single m4.2xlarge Amazon EC2 instance with Amazon EBS2 storage. The EC2 instance runs both the web server and a self-managed Oracle database. A snapshot is made of the EBS volume every 12 hours, and an AMI was created from the fully configured EC2 instance. A recent event that terminated the EC2 instance led to several hours of downtime. The application was successfully launched from the AMI, but the age of the EBS snapshot and the repair of the database resulted in the loss of 8 hours of data. The system was also down for 4 hours while the Systems Operators manually performed these processes.
What architectural changes will minimize downtime and reduce the chance of lost data?
A. Create an Amazon CloudWatch alarm to automatically recover the instance. Create a script that will check and repair the database upon reboot. Subscribe the Operations team to the Amazon SNS message generated by the CloudWatch alarm.
B. Run the application on m4.xlarge EC2 instances behind an Elastic Load Balancer/Application Load Balancer. Run the EC2 instances in an Auto Scaling group across multiple Availability Zones with a minimum instance count of two. Migrate the database to an Amazon RDS Oracle Multi-AZ DB instance.
C. Run the application on m4.2xlarge EC2 instances behind an Elastic Load Balancer/Application Load Balancer. Run the EC2 instances in an Auto Scaling group access multiple Availability Zones with a minimum instance count of one. Migrate the database to an Amazon RDS Oracle Multi-AZ DB instance.
D. Increase the web server instance count to two m4.xlarge instances and use Amazon Route 53 round- robin load balancing to spread the load. Enable Route 53 health checks on the web servers. Migrate the database to an Amazon RDS Oracle Multi-AZ DB instance.
Answer: B
标签：CloudWatch,instance,Amazon,user,351,Answer,题库,SAP,EC2 来源： https://www.cnblogs.com/yuxiaohao/p/12810908.html