Question 1

Alibaba Cloud does not support Intranet communication between products that are not in the same region, which does not mean ______________?
A) ECS instances in different regions cannot communicate with each other on the intranet.
B) ECS instances and other products in different regions, such as ApsaraDB for RDS and OSS instances, cannot communicate with each other on the intranet.
C) Server Load Balancer cannot be deployed for ECS instances in various regions.
D) Server Load Balancer can be deployed for ECS instances in various regions.

Accepted Answer

B

Question 2

Which of the following scenarios is applicable to use RDS read-only instances?
A) Reduces the write pressure on the RDS primary instance.
B) Reduces the read pressure on the RDS primary instance.
C) Implements data backtracking for the last two days.
D) Improves RDS storage capabilities.

Accepted Answer

RDS read-only instances can be used to reduce the read pressure on the RDS primary instance. This can improve performance and scalability, as read-heavy workloads can be directed to the read-only instance, freeing up resources on the primary instance. Option A is incorrect because read-only instances do not reduce write pressure, but rather read pressure. Option C is incorrect because data backtracking does not have anything to do with read-only instances. Option D is incorrect because read-only instances do not improve RDS storage capabilities, but rather improve read scalability.

Question 3

What is the full name of ECS?
A) Elastic Compute Service
B) Elastic Computing Server
C) Elastic Cost Server
D) Elastic Communication Server

Accepted Answer

ECS stands for Elastic Compute Service.

Question 4

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.
A) Server Load Balancer
B) Auto Scaling
C) RDS
D) VPC

Accepted Answer

The answer of Your website has high volume of traffic...

Question 5

Which method is not supported by OSS to create a bucket?
A) through OSS API/SDK
B) through ECS instance filesystem directory operation
C) through oss cmd tool
D) through cloud console

Accepted Answer

The answer of Which method is not supported by OSS...

Question 6

Which of the following statements to OSS bucket is not correct?
A) Every user can create more than one bucket
B) Bucket name can be changed after creation
C) Every bucket should have a unique name
D) There is no limitation to objects number inside one bucket

Accepted Answer

Bucket names cannot be changed after creation. This is a permanent identifier for the bucket and all objects stored within it. Therefore, it is important to choose a unique and appropriate name during creation. The other statements are correct.

Question 7

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.

Accepted Answer

Cloud computing services are designed to be user-friendly and provide easy access to computing resources without the need for users to manage the underlying physical machines. This is one of the primary benefits of cloud computing.

Question 8

Multiple lower-configuration I/O-optimized ECS instances can be used with ___________ to deliver a high-availability architecture.
A) Server Load Balancer
B) RDS
C) Auto Scaling
D) OSS

Accepted Answer

Server Load Balancer distributes incoming traffic across multiple ECS instances, ensuring high availability and reliability.

Question 9

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?
A) OSS + CDN combination
B) OSS + MTS combination
C) OSS + RDS combination
D) OSS + ECS combination

Accepted Answer

The answer of www.company.com is a newly launched social portal...

Question 10

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?
A) We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen.
B) 100% of loads will be assigned to ecs_inst1, and the rest 4 ECS instances will stay idle.
C) Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1.
D) Based on request level parameters of external requests, all requests with a request level parameter of 100 will be transferred to ecs_inst1.

Accepted Answer

Without knowing the weights of the other 4 ECS instances, we cannot determine the exact distribution of the load among them.

Question 11

Which of the following statements about file uploading to OSS strategy is not correct?
A) All file uploading method provided by Alibaba Cloud OSS service will support resuming from break point.
B) If you are uploading some small files (<1m), you can choose using put method to be able finish uploading in one http request.
C) If you are using OSS to store some log files which are continuously being updated, you better choose streaming method to be able to append to one existing object instead of overwriting.
D) If you need to upload very large file you better use multi-part uploading to get the capability of resuming from break point.

Accepted Answer

The answer of Which of the following statements about file...

Question 12

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?
A) Web application
B) Database
C) Confidential files on the server
D) Pictures on server

Accepted Answer

SQL injection targets the database by exploiting vulnerabilities in a web application's software to execute unauthorized SQL commands, potentially accessing or manipulating the database's data.

Question 13

If you are running an online ticket booking service with relatively fixed traffic, then which kind of charging mode is more suitable for you?
A) Pay-As-You-Go
B) Prepaid
C) Paypal-pay
D) bitcoin-pay

Accepted Answer

Pay-As-You-Go is a suitable charging mode for online ticket booking services with relatively fixed traffic because it allows customers to pay only for the tickets they use, which can be more cost-effective than prepaid plans.

Question 14

___________________ is a ready-to-use service that seamlessly integrates with Elastic Compute Service (ECS) to manage varying traffic levels without manual intervention.
A) Server Load Balancer
B) OSS
C) RDS
D) VPC

Accepted Answer

Server Load Balancer is the best choice as it is a service designed to manage varying traffic levels without manual intervention and seamlessly integrates with Elastic Compute Service (ECS). Option B (OSS) is an object storage service, Option C(RDS) is a relational database service, and Option D (VPC) is a virtual private cloud service which does not match the given scenario.

Question 15

A company wants to use Alibaba Cloud service to replace their self-built database, which of the following services should it choose?
A) AsparaDB for RDS
B) Server Load Balancer (SLB)
C) Alibaba Cloud CDN (Content Delivery Network)
D) Deploy more ECS instances

Accepted Answer

The answer of A company wants to use Alibaba Cloud...

Question 16

Server Load Balancer can help protect from ___________________ attack.
A) DDoS
B) Virus
C) Ransomware
D) SQL injection

Accepted Answer

Server Load Balancer can distribute traffic evenly across multiple servers which can help to mitigate a Distributed Denial of Service (DDoS) attack.

Question 17

A/An _________________ is a copy of data on a disk at a certain point in time.
A) image
B) snapshot
C) template
D) EIP

Accepted Answer

A snapshot is a copy of data on a disk at a certain point in time, also known as a point-in-time copy. An image is a complete copy of a system or disk, a template is a pre-designed format or layout, and EIP (External Interrupt Program) is a computer program used in computer architecture to manage interrupts. Therefore, the best choice is B: snapshot.

Question 18

When we talk about the 'Elastic' feature for ECS product, we are not talking about _____________.
A) Elastic Computing
B) Elastic Storage
C) Elastic Network
D) Elastic Administration

Accepted Answer

The 'Elastic' feature for ECS product refers to Elastic Computing, Elastic Storage, and Elastic Network. 'Elastic Administration' is not a feature offered by ECS.

Question 19

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.
A) RDS
B) Auto Scaling
C) VPC
D) MaxCompute

Accepted Answer

Auto Scaling can automatically adjust the number of ECS instances based on the traffic load, which can handle the oscillating traffic peaks more efficiently than manually adding or removing instances. This can also help optimize costs by only using the necessary resources. RDS, VPC, and MaxCompute do not directly address the issue of handling variable traffic loads.

Question 20

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.
A) Container Service
B) ECS
C) OSS
D) CDN

Accepted Answer

The best solution for addressing the storage challenge while ensuring quick access to historical video data would be to use OSS (Object Storage Service). This provides scalable, secure, and highly available storage for storing large amounts of data, such as video. As video data grows rapidly, storing them on a virtual disk is not a good option. Hence, by storing the video data on OSS, it will solve the storage space problem and provide quick access to historical data when needed.

Exam 1: ACA Cloud Computing Certification Exam

Alibaba Cloud does not support Intranet communication between products that are not in the same region, which does not mean ______________?

Which of the following scenarios is applicable to use RDS read-only instances?

What is the full name of ECS?

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.

Which method is not supported by OSS to create a bucket?

Which of the following statements to OSS bucket is not correct?

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.

Multiple lower-configuration I/O-optimized ECS instances can be used with ___________ to deliver a high-availability architecture.

Which of the following statements about file uploading to OSS strategy is not correct?

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?

If you are running an online ticket booking service with relatively fixed traffic, then which kind of charging mode is more suitable for you?

___________________ is a ready-to-use service that seamlessly integrates with Elastic Compute Service (ECS) to manage varying traffic levels without manual intervention.

A company wants to use Alibaba Cloud service to replace their self-built database, which of the following services should it choose?

Server Load Balancer can help protect from ___________________ attack.

A/An _________________ is a copy of data on a disk at a certain point in time.

When we talk about the 'Elastic' feature for ECS product, we are not talking about _____________.

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.