問題不會答...

jason506

Which of the following statements is NOT correct, regarding changing the specification of an RDS instance?

A. The specification of an RDS instance can be upgraded as needed

B. The service will not be interrupted during upgrade/downgrade

C. The database version cannot be downgraded.

D. RDS for MySQL 5.1 instance can't be directly upgraded to MySQL 5.6.

thamky

D

vaio

应该选D吧。5.1要升级到5.5，然后才能5.6吧。
两种不同的存储引擎：MyISAM和InnoDB。

jason506

vaio 发表于 2021-9-24 22:46
应该选D吧。5.1要升级到5.5，然后才能5.6吧。
两种不同的存储引擎：MyISAM和InnoDB。

我也覺得.

http://docs-aliyun.cn-hangzhou.o ... l-en-2017-03-30.pdf

jason506

vaio 发表于 2021-9-24 22:46
应该选D吧。5.1要升级到5.5，然后才能5.6吧。
两种不同的存储引擎：MyISAM和InnoDB。

Company B wants to build an Online Disk service on ALibaba CLoud. The service will be used by the company’s 3000 employees in one city for flie storing and sharing.
Employees can use this system to upload and dowload files, as well as view a list of everying they have upload. They can also grant permissions to other users to view or download the files they have uploaded. The totel capacity of the system needs to be at least 10 TB.

According to the plan, company B should select Alibaba Cloud ______ produsts to guarantee the scalability of their Online Disk service. (Number of correct answers: 2)

A. ApsaraDB for RDS for saving basic file inforamtion, download link information
B. Elastic Comptue Service (ECS) for user inforamtion caching
C. Object Storage Service (OSS) for arching the files for Online Disk service
D. Content Delivery Network (CDN) for content caching

vaio

jason506 发表于 2021-10-6 17:29
Company B wants to build an Online Disk service on ALibaba CLoud. The service will be used by the  ...

online disk，肯定选择oss对象存储啊。
选c

jason506

vaio 发表于 2021-10-7 15:59
online disk，肯定选择oss对象存储啊。
选c

大哥終於有失手的一次了.
人家說選兩個啦.

我看過題庫是說選3個,所以這題我不會了...

jason506

再來兩道挑戰題:

65.Compared with traditional CDN, Alibaba Cloud Content Delivery Network (CDN) is stable, fast, cost-saving, and easy to use. _______ correctly describe the advantages in Alibaba Cloud CDN when it comes to "easy to use" (Number of correct answers: 3).

A. Web console provides a rich and friendly interface. It supports customizing Hotlink Protection measures, cache policies, HTTP request headers, and
other functions.
B. You can enable and disable the CDN via OpenAPI and SDK.
C. CDN will cache your original site content to global wide by default.
D. You can download CDN access logs via OpenAPI.
E. If the CDN service and the accelerated domain name are managed in the same Alibaba Cloud account, it supports automatic parsing modification.

jason506

A Virtual Private Cloud (VPC) is an isolated network environment that is completely isolated from each other.
The following statements about VPC are correct ___________ (Number of correct answers: 2)

A. Each VPC has an independent tunnel ID, and a tunnel ID corresponds to a virtualized network.
B. Subnets can be divided like the traditional network environment. Different cloud servers within each subnet are connected by the same router, and
different subnets are interconnected by switches.
C. The internal networks of different VPCs are completely isolated and can be interconnected through IP addresses mappedto the outside.
D. ECS instances in a VPC use security group firewalls for Layer 2 network access control.

jason506

vaio 发表于 2021-9-24 22:46
应该选D吧。5.1要升级到5.5，然后才能5.6吧。
两种不同的存储引擎：MyISAM和InnoDB。

我看了題目.你錯了. 要選不正確的.

RDS for MySQL 5.1 instance can't be directly upgraded to MySQL 5. 6.
就跟你說的一樣.5.1要陞級到5.5，然後才能5.6.
所以不能選他

vaio

jason506 发表于 2021-10-11 00:35
大哥終於有失手的一次了.
人家說選兩個啦.

我知道选2个，我只知道一个c，其它想到能可扩展的，也只有cdn了。