ACA Cloud Computing Certification
Total points31/99
Alibaba Cloud Certification Associate (ACA - Alibaba Cloud Certification Associate) is a certification designed for personnel who can use Alibaba Cloud Computing products. It covers all of Alibaba Cloud's core products from computing, storage, networking to security.
RDS is a PaaS, what is the full term of PaaS in cloud computing?
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It's
very easy to provision a new ECS instance. During the instance
creation, you need to specify the Region and Zone. Which of the
following description about region & zone is NOT correct?
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Autoscaling
is a management service that can automatically adjust elastic computing
resources based on your business needs and policies. It supports adding
existing ECS instances into the scaling group, whose status must be
____________
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Alibaba
cloud OSS is a clod storage service that features massive capacity
outstanding security, low cost, and high reliability. To control the
access to the files stored on OSS, OSS provides multiple access
permissions for each bucket. These buckets permissions
are______________(Number of correct answer: 3)
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Server
Load Balancer supports health checks for ECS instances and allows user
to specify the frequency. If an ECS instance does not qualify the health
check, traffic will not be forwarded to that instance, thereby ensuring
application availability.
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Multiple
lower-configuration I/O-optimized ECS instances can be used with
___________ to deliver a high-availability architecture.
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After
creating an RDS read-only instance, you should use which of the
following services to make its data consistent to the master instance?
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In
OSS, all data is stored in buckets. When an OSS bucket is set with the (
) permission, the OSS Bucket allows other users to read (GET Object)
the objects in the bucket.
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In
OSS Image Processing service, URLs are accessed with standard HTTP GET
requests, and all processing parameters are in the QueyString of the
URL. Which of the following modes are supported by image processing
function?(Number of correct answers: 2)
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Which of the followings is not the database type supported by RDS?
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The
most important feature of Alibaba cloud server is elasticity. When
trying to expand the disk, user can expand the disk size or add a new
disk. Which of the following description is NOT correct about adding a
new disk?
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In
case of any issues occurring during the upgrade or migration
application on ECS, you can go back to normal status using snapshots
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Alibaba
Cloud provides anti-DDoS products of different levels. If the service
availability needs to be kept at 99.9% or higher under DDoS attacks,
which of the following is the MOST suitable product?
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Which 2 OSS object types can be configured as parameter for object lifecycle management? (Choose two.)
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Alibaba
Cloud OSS is a cloud storage service that features massive capacity,
outstanding security, low cost, and high reliability. Files managed by
OSS can be easily shared with external applications. Before sharing a
file, you can find the URL of the file from the detail page of a file.
The sharing is done by using ( ) application-layer protocol.
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___________________
is a ready-to-use service that seamlessly integrates with Elastic
Compute Service (ECS) to manage varying traffic levels without manual
intervention.
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When using Alibaba Cloud RDS, you still need to take care of which of the following O&M tasks?
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Alibaba Cloud provides which of the following cloud disks ________.(select 2 correct answers)
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A/An _________________ is a copy of data on a disk at a certain point in time.
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In
mainland China, the approval requirements for business record filing
vary depending on provincial communication management bureaus.
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Feedback
Only
require to Internet Content Provider license a legal and mandatory
requirement by China Ministry of Industry and Information tech…
You
built an online shop using Alibaba Cloud services (ECS, RDS, …etc.) and
very soon you’ll have a campaign that every customer that invites 3
friends will get a 50% off coupon. To avoid HTTP flood attacks and
ensure only genuine customers (not bots) joining the event, which
security product should you choose?
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RDS
for MySQL is a PaaS, which means after creating the RDS instance, the
user does not need to take care of the underlying OS, runtime
environment of software packages. These would be taken care of by
Alibaba Cloud.
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Alibaba Cloud server ECS is provided to customer as a cloud service. Which is the support SLA of Alibaba Cloud Products?
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Auto
Scaling can automatically remove unhealthy ECS instances from the
scaling group (this feature is called Elastic Self-Health). Yet, after
removal, the user has to manually add equivalent amount of new ECS
instances back to the scaling group
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When we talk about the ‘Elastic’ feature for ECS product, we are not talking about _____________.
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Which of the following scenarios is applicable to use RDS read-only instances?
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A
large shopping mall deploys a new video surveillance system. The
five-floor building in which the mall is located installed 35 HD cameras
to monitor the major exits. The surveillance system is deployed on an
ECS instance, which has four 2 TB data disks to store video
data.However, video data grows rapidly and the engineers find that the
ECS will run out of storage space within 2 weeks.In this case,
_____________ product is thought to be the best solution for addressing
the storage challenge while ensuring quick access to historical video
data when needed.
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Alibaba
Cloud Object Storage Service (OSS) is a massive, highly available,
secured and cost effective storage service. One of the special
characteristics of OSS is its superior data reliability, because of its
underlying backup technology and policies. Which of the following
statement about OSS backup is correct?
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A
company wants to use Alibaba Cloud service to replace their self-built
database, which of the following services should it choose?
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Auto
Scaling is a management service that can automatically adjust elastic
computing resources based on your business needs and policies. It
supports adding an existing ECS instance into the scaling group but
imposes certain requirements on instance region. In this case, which of
the following statements is true?
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An
enterprise hosts their servers ( including both Linux and Windows
servers) in a traditional IDC. Every night hackers with IP addresses
from many country try to crack the password on their servers, making the
administrator terribly worried about this. However , because of work
requirement, the remote management port of these servers must be opened
to public network.The administrator heard that Alibaba cloud has a
solution that can help customers improve the security of their systems.
Therefore , he wants to migrate the system to Alibaba cloud. Which of
the following function should the administrator activate in Alibaba
cloud to reduce the possibility of brute force password cracking?
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Server Load balancer offers flexible billing options, except _________
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Which of the following statements is true for RDS?
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Comparing
to traditional server room trusteeship, ECS provides better
flexibility. Which of the following operation is NOT supported?
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You
deploy an application on Alibaba Cloud ECS and want to acquire basic
security protection at low cost. Which of the following security
services can be activated for free? ( Number of correct answer: 2)
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Your
website has high volume of traffic and sudden spikes for a very short
time. In this scenario, which product can manage traffic peak
efficiently and maintain a consistent user experience?
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Which of the following products can be used to make an ECS only accessible from a private IP address?
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Alibaba
Cloud’s object storage (Object Storage Service, OSS for short) can be
used to store massive amount of files, but there is still a maximum
number of files in a single bucket.
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Which method is not supported by OSS to create a bucket?
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Using
a cloud computing service is simple and straightforward. One can choose
the instance with desired specification, finish payment and then use it
right away. Moreover, the underlying physical machines are managed by
cloud service providers and transparent to users.
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An
object is the basic unit of data stored in OSS. Which of the following
file operations are supported by OSS? (Number of correct answers: 3)
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A
company Uses Alibaba Cloud SLB and Auto Scaling at the same time,
hoping this combination can help save O&M cost and provide stable
and reliable system.However, because they do not have relevant
experience , the company’s engineers listed some precautions based on
their understanding , and turned the list to you for advice.As an expert
of Alibaba Cloud, you tell them_______________.
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A
customer uses Alibaba Cloud Auto Scaling service and creates a scaling
group. He/she sets the "Minimum number of instances" to 6 and "Maximum
number of instances" to 8.After correctly configuring scaling settings,
the customer adds a scaling rule "Remove 5 ECS instances", and creates a
scheduled task based on this rule.And then, the customer checks the
scaling group and see it already contains 8 valid ECS instances, he/she
then enables this scaling group immediately.How many ECS instances are
left in the scaling group when the scheduled task is activated once?
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RDS
provides whitelist access policies. You can set permitted IP address
and IP to effectively prevent hackers from attacking the server by port
scanning.
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After
activating the OSS service, you must create buckets in the OSS
management console or by using Open API before you can store files.
Which of the following statements is true for buckets?
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You can create a custom image for ECS using which of the followings? (Choose two.)
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Anti-DDoS
is one of the major features in Alibaba Cloud Security Service. Many
websites have experienced different types of DDoS attacks, an accurate
understanding of DDoS is crucial to protecting websites. Which of the
following descriptions about DDoS attack is the most accurate one?
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In
each Alibaba Cloud service region, there are different data centers
with independent power supply and network. These data centers are also
called () in Alibaba Cloud.
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You can retrieve data directly from an ECS Image and use it right away.
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----------- feature in server load balancer means that it can forward
the access requests from the single user to the same ECS instance with
in a certain period to ensure session continuity?
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Which three of the following statements about domain name binding to your OSS bucket are correct? (Choose three.)
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When doing RDS backup, which type of backup is supported by automatic backup?
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Alibaba
cloud provides reliable cloud resources (the same level of resources
used to support Alibaba group double 11 shopping festival) with service
regions across the globe. Yet, if you encounter any difficulties and
need help, you can only contact the service desk from 8:00 am to 6:00 pm
(Bejing Time)
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Alibaba
Cloud relational database service (RDS) is a stable, reliable and
elastic online database service. Compared to self-built database, RDS
has the following advantages: (Number of correct answers: 3)
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Which of the following statements is wrong when comparing RDS with self-built database?
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Cloud
disks are reliable because they use ________ to provide block-level
data storage for ECS instances, ensuring 99.9999999% data reliability.
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Alibaba
Cloud does not support Intranet communication between products that are
not in the same region, which does not mean ______________?
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Feedback
NOT MEAN
Reference: https://www.alibabacloud.com/help/doc-detail/40654.htm
Reference: https://www.alibabacloud.com/help/doc-detail/40654.htm
What is the full name of ECS?
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Auto
Scaling is a management service that can automatically adjust elastic
computing resources based on your business needs and policies. Which of
the following is not the feature supported by Alibaba Cloud Auto
Scaling?
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Which of the following statements to OSS bucket is not correct?
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When
you create an ECS instance using image, which of the following options
is not provided Alibaba Cloud on the ECS purchase console.
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You can __________________ an ECS instance’s configuration. (Choose two.)
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A
customer uses Alibaba Cloud Auto Scaling service and creates a scaling
group. He/she sets the "Minimum number of instances" to 6 and "Maximum
number of instances" to 8.After correctly configuring scaling settings,
the customer adds a scaling rule "Adjust to 10 ECS instances", and
creates a scheduled task based on this rule.And then, the customer
checks the scaling group and see it already contains 6 valid ECS
instances, he/she then enables this scaling group immediately.How many
ECS instances are left in the scaling group when the scheduled task is
activated once?
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Server
Load Balancer can manage sudden spikes in traffic, minimize response
time and maintain 99.99% availability of your web application.
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Your
website has high volume of traffic and sudden spikes for a very short
time. In this scenario, ______________ can manage traffic peak
efficiently and maintain a consistent user experience.
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When
using Alibaba Cloud SLB, you can set different weights for backend ECS
instances. The higher the weight of a backend ECS instance, the more
load will be assigned to it. If an SLB instance has 5 ECS instances in
the backend server pool, all of which are healthy. Among these 5 ECS
instances, the weight of ecs_inst1 is set to 100. Which of the following
statements is correct?
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When using Alibaba Cloud OSS, you can set access control in 3 different levels, which are ( ) (Number of correct answers: 3)
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OSS
supports massive file storage and provides multiple file deletion
functions. Which of the followings is most suitable if many objects need
to be deleted with a pattern, for example, to delete all the objects
generated before a specific day?
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When
using Alibaba Cloud SLB, users can enable the health check function.
For Layer 4 services (UDP protocol), SLB determines the availability of
ECS instances through?
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Which of the following is not Alibaba Cloud CloudMonitor metrics for RDS?
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Before
important operations such as upgrading application software or
migrating business data, it is suggested to create one or more ________.
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If
you are running an online ticket booking service with relatively fixed
traffic, then which kind of charging mode is more suitable for you?
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ECS
is a Highly flexible service. It can be used independently as a simple
web server, or used with other Alibaba cloud products, such as OSS and
CDN, to provice advanced Solutions. ECS can be used in applications such
as:______________. (Number of correct answer: 4)
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If you have an ECS instance and an RDS instance in the same region, what is the easiest way to connect the two?
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Your
website has oscillating traffic peaks that are difficult to predict in
advance. In this scenario, it is recommended to use SLB and
__________________ together with ECS.
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www.company.com
is a newly launched social portal for exchanging automotive
information. The portal is based on PHP, including 10GB of images, and
some JavaScripts files. Currently one single ECS instance is used to
host all the application content as well as a MySQL database. With the
growing number of users, the portal is getting slower to load images or
respond to user requests. Moreover, there will be additional 50GB image
content uploaded to the portal every week. Which combination of Alibaba
Cloud services below can help resolve the storage and performance issue
at the same time?
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Server Load Balancer can help protect from ___________________ attack.
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SQL
injection is a common application layer attack, usually through
building special input parameters and pass it to web applications to
steal or sabotage the application data. Which of the following is the
target for SQL injection?
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Auto
Scaling is a management service that can automatically adjust elastic
computing resources based on your business needs and policies. Which of
the following application scenarios are suitable for Auto Scaling?
(Choose three.)
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You
are developing a highly available web application using stateless web
servers. Which services are suitable for storing session state data?
(Choose two.)
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Alibaba
Cloud Monitor service stems from years of experience of server
monitoring technology in Alibaba group, leveraging the powerful data
analysis capability of Alibaba cloud computing platform to provide
monitoring service for various clients’ applications and servers. A user
receives an alert saying that the IOPS utilization rate for an ECS
instance exceeds 80%. Yet, he/she is not sure how to handle the
situation, the user may obtain help from Alibaba Cloud through the below
methods ____________________? (Choose three.)
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Which of the following is not the database type supported by RDS?
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A
company wants to migrate its system to public cloud platform and they
choose Alibaba Cloud. The migration process is very important and they
want to ensure that everything works right. Which of the following
services can the company choose?
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Which of the following statements about file uploading to OSS strategy is not correct?
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Alibaba Cloud CDN can directly accelerate the access to the files stored in OSS and reduce OSS traffic costs.
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Server Load Balancer supports protocols like ______________. (Choose four.)
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Alibaba
Cloud China Connect is a service that can help international companies
do business in China. Which of the following services is not included in
China Connect?
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Alibaba
Cloud Object Storage Service (OSS) is a massive, highly available,
secured and cost effective storage service. OSS is superior than
self-built storage in all these aspects. Which of the following
advantage relates to the high availability of OSS?
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Alibaba
Cloud relational database service (RDS) is a stable, reliable and
elastic online database service. RDS supports below database types
_______________? (Choose three.)
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You can ________ an ECS instance’s configuration. (Number of correct answers: 2)
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A
video Company Uses SLB to distribute user request to 20 ECS instances
with the same configuration to response these request. As the Spring
Festival approaches , service traffic would double during holidays (
based on past experience). Thus, you use Auto Scaling to Elastically
adjust computing resources. Since the service is online for many years,
you have historic records that can help predict the upcoming service
traffic and choose the scaling mode freely.In this Scenario, Which of
the following solutions are Feasible? ( Number of correct answers: 3 )
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Name/Alias *
Kay
Server
Load Balancer can be integrated with a Virtual Private Cloud (VPC). You
can create an internal cloud load balancer to route traffic using
private IP addresses within your VPC.
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A
Video streaming company uses SLB to distribute user requests to 30 ECS
instances (the 30 ECS instances have the same configuration). Yet the
company finds that the service traffic soars dramatically every right
from 20:00 to 02:00. According to their calculation, the evening traffic
is 100% higher than the traffic in other period of time. To properly
responds to user requests, which of the following methods is most
preferable from the perspective of cost and implementation simplicity?
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Alibaba
Cloud provides powerful security services (the same level of security
services used to support Alibaba Group double 11 shopping festival).
However, you have to pay first before using any of the security
services.
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Company
A builds a sales management platform based on Alibaba Cloud services,
using 3 ECS instances. One of the ECS instance has MySQL installed as
the database server of the platform, the other two are used as WEB
servers. After some time, due to the rapid increase of employees and
sales analysis requests, the performance of the platform is challenged
in terms of response time. Through CloudMonitor, it is found that the
average CPU usage reaches 70% for the two WEB server ECS instances and
the database load reaches 75% for the database server ECS instance. In
this situation, company A may choose which Alibaba Cloud services to
improve the performance _________________. (Choose two.)
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Server
Load Balancer supports Weighted Round Robin (WRR) and at least
connections scheduler algorithms. You can choose the traffic
distribution algorithm that best suits your needs.
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Cloud
Disk Provide a secure Storage method to ensure that your stored content
will not be lost.However if the data stored on a cloud disk is
incorrect due to an application error or the data is maliciously
tampered by hackers through an application vulnerability , snapshots
ensure that your data can be restored to the desired state.
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Which 2 parameters you need to configure to setup a static website hosted on an OSS bucket? (Number of correct answers: 2)
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Which of the followings is part of the cost of using Alibaba Cloud RDS?
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