没有合适的资源?快使用搜索试试~ 我知道了~
首页亚马逊AWS解决方案架构师考试模拟题:立即终止实例原因及Auto Scaling策略
"这份文档是针对AWS Solution Architect Associate考试的复习资料,包含了两道模拟试题及解析。第一题考察了在Amazon EC2实例启动过程中可能遇到的问题。当一个实例立即进入终止状态时,原因可能有:AMI(Amazon Machine Image)缺少必要的组件、快照损坏或达到了卷容量限制。答案C提到创建EBS存储并不是导致实例立即终止的原因,尽管在实际操作中,确保足够的存储通常是必要的,但这不是问题所在。AWS建议检查这些因素以确保实例能够顺利运行,如参考链接所示:[1]。 第二题关注的是Amazon Auto Scaling组的工作原理。当设置了冷却期(Cooldown period)为7分钟,即两次实例自动扩展之间的间隔时间。如果第一个实例在3分钟后启动,而第二个实例在4分钟后启动,那么第一个实例启动后到可以启动第二个实例的时间将不会立即开始计时,而是从上一个实例启动并完成冷却期之后开始,即7分钟后。因此,第二个实例会在第一个实例启动后加上7分钟才被启动。这题强调了理解Auto Scaling组的策略对避免过度扩展和性能优化的重要性。 通过这两道题目,考生可以了解到AWS服务中的实例管理和自动化扩展的设置,以及在实际操作中可能遇到的常见问题和最佳实践。准备AWS Solution Architect Associate考试时,不仅需要掌握基础架构设计、成本优化、安全性等方面的知识,还要熟悉AWS服务的实际应用和潜在问题处理。"
资源详情
资源推荐
![](https://csdnimg.cn/release/download_crawler_static/11803606/bg10.jpg)
Question: 27
You need to import several hundred megabytes of data from a local Oracle database to an
Amazon RDS DB instance. What does AWS recommend you use to accomplish this?
A. Oracle export/import utilities
B. Oracle SQL Developer
C. Oracle Data Pump
D. DBMS_FILE_TRANSFER
Answer: C
Explanation:
How you import data into an Amazon RDS DB instance depends on the amount of data you have
and the number and variety of database objects in your database.
For example, you can use Oracle SQL Developer to import a simple, 20 MB database; you want
to use Oracle Data Pump to import complex databases or databases that are several hundred
megabytes or several terabytes in size.
Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Oracle.Procedural.Importing.ht
ml
Question: 28
A user has created an EBS volume with 1000 IOPS. What is the average IOPS that the user will
get for most of the year as per EC2 SLA if the instance is attached to the EBS optimized
instance?
A. 950
B. 990
C. 1000
D. 900
Answer: D
Explanation:
As per AWS SLA if the instance is attached to an EBS-Optimized instance, then the Provisioned
IOPS volumes are designed to deliver within 10% of the provisioned IOPS performance 99.9% of
![](https://csdnimg.cn/release/download_crawler_static/11803606/bg11.jpg)
the time in a given year. Thus, if the user has created a volume of 1000 IOPS, the user will get a
minimum 900 IOPS 99.9% time of the year.
Reference: http://aws.amazon.com/ec2/faqs/
Question: 29
You need to migrate a large amount of data into the cloud that you have stored on a hard disk
and you decide that the best way to accomplish this is with AWS Import/Export and you mail
the hard disk to AWS. Which of the following statements is incorrect in regards to AWS
Import/Export?
A. It can export from Amazon S3
B. It can Import to Amazon Glacier
C. It can export from Amazon Glacier.
D. It can Import to Amazon EBS
Answer: C
Explanation:
AWS Import/Export supports:
. Import to Amazon S3
. Export from Amazon S3
. Import to Amazon EBS
. Import to Amazon Glacier
AWS Import/Export does not currently support export from Amazon EBS or Amazon Glacier.
Reference: https://docs.aws.amazon.com/AWSImportExport/latest/DG/whatisdisk.html
Question: 30
You are in the process of creating a Route 53 DNS failover to direct traffic to two EC2 zones.
Obviously, if one fails, you would like Route 53 to direct traffic to the other region. Each region
has an ELB with some instances being distributed. What is the best way for you to configure the
Route 53 health check?
A. Route 53 doesn't support ELB with an internal health check.You need to create your own
Route 53 health check of the ELB
B. Route 53 natively supports ELB with an internal health check. Turn "Evaluate target health"
off and "Associate with Health Check" on and R53 will use the ELB's internal health check.
![](https://csdnimg.cn/release/download_crawler_static/11803606/bg12.jpg)
C. Route 53 doesn't support ELB with an internal health check. You need to associate your
resource record set for the ELB with your own health check
D. Route 53 natively supports ELB with an internal health check. Turn "Evaluate target health"
on and "Associate with Health Check" off and R53 will use the ELB's internal health check.
Answer: D
Explanation:
With DNS Failover, Amazon Route 53 can help detect an outage of your website and redirect
your end users to alternate locations where your application is operating properly. When you
enable this feature, Route 53 uses health checks—regularly making Internet requests to your
application’s endpoints from multiple locations around the world—to determine whether each
endpoint of your application is up or down.
To enable DNS Failover for an ELB endpoint, create an Alias record pointing to the ELB and set
the “Evaluate Target Health” parameter to true. Route 53 creates and manages the health
checks for your ELB automatically. You do not need to create your own Route 53 health check of
the ELB. You also do not need to associate your resource record set for the ELB with your own
health check, because Route 53 automatically associates it with the health checks that Route 53
manages on your behalf. The ELB health check will also inherit the health of your backend
instances behind that ELB.
Reference:
http://aws.amazon.com/about-aws/whats-new/2013/05/30/amazon-route-53-adds-elb-inte
gration-for-dns-failover/
Question: 31
A user wants to use an EBS-backed Amazon EC2 instance for a temporary job. Based on the
input data, the job is most likely to finish within a week. Which of the following steps should be
followed to terminate the instance automatically once the job is finished?
A. Configure the EC2 instance with a stop instance to terminate it.
B. Configure the EC2 instance with ELB to terminate the instance when it remains idle.
C. Configure the CloudWatch alarm on the instance that should perform the termination action
once the instance is idle.
D. Configure the Auto Scaling schedule activity that terminates the instance after 7 days.
Answer: C
Explanation:
![](https://csdnimg.cn/release/download_crawler_static/11803606/bg13.jpg)
Auto Scaling can start and stop the instance at a pre-defined time. Here, the total running time
is unknown. Thus, the user has to use the CloudWatch alarm, which monitors the CPU
utilization. The user can create an alarm that is triggered when the average CPU utilization
percentage has been lower than 10 percent for 24 hours, signaling that it is idle and no longer in
use. When the utilization is below the threshold limit, it will terminate the instance as a part of
the instance action.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/UsingAlarmActions
.html
Question: 32
Which of the following is true of Amazon EC2 security group?
A. You can modify the outbound rules for EC2-Classic.
B. You can modify the rules for a security group only if the security group controls the traffic for
just one instance.
C. You can modify the rules for a security group only when a new instance is created.
D. You can modify the rules for a security group at any time.
Answer: D
Explanation:
A security group acts as a virtual firewall that controls the traffic for one or more instances.
When you launch an instance, you associate one or more security groups with the instance. You
add rules to each security group that allow traffic to or from its associated instances. You can
modify the rules for a security group at any time; the new rules are automatically applied to all
instances that are associated with the security group.
Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/using-network-security.htm
l
Question: 33
An Elastic IP address (EIP) is a static IP address designed for dynamic cloud computing. With an
EIP, you can mask the failure of an instance or software by rapidly remapping the address to
another instance in your account. Your EIP is associated with your AWS account, not a
particular EC2 instance, and it remains associated with your account until you choose to
explicitly release it. By default how many EIPs is each AWS account limited to on a per region
basis?
![](https://csdnimg.cn/release/download_crawler_static/11803606/bg14.jpg)
A. 1
B. 5
C. Unlimited
D. 10
Answer: B
Explanation:
By default, all AWS accounts are limited to 5 Elastic IP addresses per region for each AWS
account, because public (IPv4) Internet addresses are a scarce public resource. AWS strongly
encourages you to use an EIP primarily for load balancing use cases, and use DNS hostnames
for all other inter-node communication.
If you feel your architecture warrants additional EIPs, you would need to complete the Amazon
EC2 Elastic IP Address Request Form and give reasons as to your need for additional addresses.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/elastic-ip-addresses-eip.html#usin
g-instance-addressing-limit
Question: 34
In Amazon EC2, partial instance-hours are billed _____.
A. per second used in the hour
B. per minute used
C. by combining partial segments into full hours
D. as full hours
Answer: D
Explanation:
Partial instance-hours are billed to the next hour.
Reference: http://aws.amazon.com/ec2/faqs/
Question: 35
In EC2, what happens to the data in an instance store if an instance reboots (either intentionally
or unintentionally)?
剩余463页未读,继续阅读
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://profile-avatar.csdnimg.cn/default.jpg!1)
smartustc
- 粉丝: 2
- 资源: 20
上传资源 快速赚钱
我的内容管理 收起
我的资源 快来上传第一个资源
我的收益
登录查看自己的收益我的积分 登录查看自己的积分
我的C币 登录后查看C币余额
我的收藏
我的下载
下载帮助
![](https://csdnimg.cn/release/wenkucmsfe/public/img/voice.245cc511.png)
会员权益专享
最新资源
- Simulink在电机控制仿真中的应用
- 电子警察:功能、结构与抓拍原理详解
- TESSY 4.1 英文用户手册:Razorcat Development GmbH
- 5V12V直流稳压电源设计及其实现
- 江西建工四建来宾市消防支队高支模施工方案
- 三维建模教程:创建足球模型
- 宏福苑南二区公寓楼施工组织设计
- 福建外运集团信息化建设技术方案:网络与业务平台设计
- 打造理想工作环境:详尽的6S推行指南
- 阿里巴巴数据中台建设与实践
- 欧姆龙CP1H PLC操作手册:SYSMACCP系列详解
- 中国移动统一DPI设备技术规范:LTE数据合成服务器关键功能详解
- 高校竞赛信息管理系统:软件设计与体系详解
- 面向对象设计:准则、启发规则与系统分解
- 程序设计基础与算法解析
- 算法与程序设计基础概览
资源上传下载、课程学习等过程中有任何疑问或建议,欢迎提出宝贵意见哦~我们会及时处理!
点击此处反馈
![](https://img-home.csdnimg.cn/images/20220527035711.png)
![](https://img-home.csdnimg.cn/images/20220527035711.png)
![](https://img-home.csdnimg.cn/images/20220527035111.png)
安全验证
文档复制为VIP权益,开通VIP直接复制
![](https://csdnimg.cn/release/wenkucmsfe/public/img/green-success.6a4acb44.png)