If you want to build a secure and isolated network environment on Alibaba Cloud; meanwhile, design your network topology and specify Intranet IP addresses or CIDR Blocks in this network environment as needed, you can choose:
A. Leased line
B. Virtual Private Cloud (VPC)
C. Auto Scaling
D. Express Connect
A startup video streaming company deploys its service on Alibaba Cloud Elastic Compute Service (ECS) Christmas is coming soon and the CEO knows that they need to prepare more computing resources However, they don't want to purchase a large number of Elastic Compute Service (ECS) instances tor a long period of time. Instead, they want to buy ECS instances for a short period of time and release them after the event is over. Which of the following billing methods of ECS is the most suitable?
A. Pay-As-You-Go Only
B. Pay-As-You-Go with Reserved Instances
C. Subscription with Reserved Instances
D. Pay-As-You-Go with Savings Plan
Which of the following statements is NOT correct, when comparing RDS with a self-built database?
A. Self-built database support quick deployment and elastic scaling.
B. RDS requires no OandM while self-built database require a dedicated DBA for maintenance, which results in high HR costs.
C. RDS features a high availability of 99 95% while self-built databases require you to implement data protection primary-standby replication, and RAID all by yourself.
D. RDS provides automatic backup while self-built databases require you to prepare storage space for backup copies and regularly verify that these copies can be restored.
RDS provides whitelist access policies. You can set permitted IP addresses and IP network segments to effectively prevent hackers from attacking the server by port scanning.
A. True
B. False
An online education website is built based on ECS. SLB and Auto Scaling, which greatly reduces resource cost, OandM cost and without compromising system stability and user experience.
Now. the website admin wants to keep the user information (such as source IP, accessed URLs, and duration on each page) for analysis to support their upcoming campaign events In this case, which of the following statements is NOT correct?
A. Let each ECS instance in the scaling group keeps the user access information it processes Thus, the data saved by these ECS instances can be accessed and analyzed at any time, making the solution not only simple, but also efficient reliable, and cost-effective.
B. Save user-related access information to ApsaraDB for RDS in real time or quasi real time, which can then be used for performing query and analysis.
C. Synchronize user-Synchronize user-related access information to ApsaraDB for Memcache in real time or quasi real time. Then, access Memcache using an application or make the data in Memcache persistent based on certain rules and then can use the persistent data for further analysis.
D. Synchronize user-related access information to OSS in real time or quasi real time for further use
You are using Auto Scaling with one scaling group already created, then you want to execute a task at a specific time such as removing 1 ECS instance every night at 00:00. To achieve this, which of the following operations should be performed'? (Number of correct answers; 2)
A. Create a scaling rule
B. Create a scheduled task.
C. Create a new scaling group.
D. Create an event-triggered task.
After activating an Alibaba Cloud Elastic Compute Service (ECS) instance, you want to monitor the status of the ECS instance via Alibaba Cloud console. Therefore: you must activate and purchase Alibaba Cloud CloudMonitor service to meet this demand.
A. True
B. False
A large enterprise wants to migrate the entire business system to Alibaba Cloud to save the overall IT procurement and OandM costs From the security aspect, the company requires that
1.
Must support secured remote OandM because the administrator often takes business trips.
2.
Networks between subsystems should be isolated because subsystems are independently used by different departments
Which of the followings should be used together to meet the company's requirements? (Number of correct answers: 3)
A. Enable the VPN on the bastion host (or directly use the VPN image on Alibaba Cloud Marketplace). The administrator uses VPN encrypted communication during OandM.
B. Build an independent ECS instance as the bastion host or remote logon and OandM, and authorize the bastion host to access ECS instances running other subsystems.
C. Use the security group function of the ECS instance, and respectively deploy ECS instances running different subsystems to independent security groups.
D. Create multiple ECS instances in the VPC to install subsystems of different departments- Allocate only Intranet IP addresses to all ECS instances, and deploy them in the same security groups.
All RDS for MySQL backups are full backups.
A. True
B. False
Company A constructed a sales management platform using three Elastic Compute Service (ECS) instances. One of the instances runs MySQL, and is used as the database server. The other two instances are used as Web servers After some time, the number of employees in Company A dramatically increases, leading to higher sales volumes At the same time, the platform response speed is gradually decreasing too.
According to the report from CloudMonitor, the average CPU utilization rate of the two Web servers exceeds 70%, and database load reaches 75% Company A can select Alibaba Cloud_________ services.to cope with the issue and optimize the performance. (Number of correct answers: 2)
A. Import database data into Object Storage Service (OSS) to share the storage pressure on the platform
B. Incorporate Server Load Balancer (SLB) and add additional ECS instances to relieve the load on existing ECS instances
C. Use Content Delivery Network (CDN) to enhance content loading speed
D. Replace the self-built MySQL database with ApsaraDB for RDS to obtain better database performance, and utilize RDS read-only instances to handle read-only requests
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