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What are the common cloud computing test questions? In response to this problem, today's small series summarizes this article on cloud computing common test questions, which can be used for reference by interested friends, hoping to help everyone.

What are the different layers of cloud computing?

SaaS: Software as a Service, which gives users direct access to cloud applications without having to install anything on the system.

2)IaaS: Infrastructure as a service, which provides infrastructure at the hardware level (such as memory and processor speed).

PaaS: Platform as a Service, which provides a cloud application platform for developers.

What is the difference between elasticity and scalability in cloud computing?

Scalability is a feature of cloud computing that allows you to handle increased workloads by increasing resource capacity accordingly. Elasticity emphasizes the concept of enabling and disabling large resource capacities.

What are the different parts that are necessary in cloud architecture?

1)Cloud inbound;2) processor speed;3) cloud storage services;4) cloud provider services;5) inter-cloud communications.

What are the different stages of cloud architecture?

1)start-up phase;2) monitoring phase;3) shutdown phase;4) clean-up phase.

In what ways does cloud architecture provide automation and performance transparency?

To provide performance transparency and automation, cloud architectures use a number of tools. It can manage cloud architecture and monitoring reports, and it can share applications that use cloud architecture. Automation is a critical part of cloud architecture and helps improve quality levels.

How do we understand hybrid cloud and community cloud?

Hybrid Cloud: Includes multiple service providers that combine the capabilities of public and private clouds. Hybrid clouds are used when companies need both private and public clouds.

Community Cloud: The cost of this model is quite high, and many Tencent Cloud Organization have common goals and needs, and are ready to share the benefits of cloud services.

What are the optimization strategies in the cloud?

To overcome maintenance costs and optimize resources, the concept of three data centers in the cloud is used: providing recovery and backup mechanisms to ensure that all data is safe in the event of a disaster or system failure.

What are the hypervisors and their types in cloud computing?

Hypervisors are virtual machine monitoring tools that manage resources for virtual machines. There are two main types of hypervisors:

Type 1: Guest VMs run directly on host hardware, such as Xen and VMWare ESXI.

Type 2: Guest virtual machines run on hardware via host operating systems, such as KVM and Oracle VirtualBox.

There is a 1G file size, each line is a word, the word size does not exceed 16 bytes, the memory size limit is 1M. How to set the return frequency of the highest 100 words.

The first step is to divide and conquer/hash into sequential read files, taking hash(x)%5000 for each word x and storing that value into 5000 small files (denoted x0,x1,…x4999). Each file is approximately 200k. If some of the files exceed 1M in size, you can continue to divide them in a similar way until the size of the small files obtained by decomposition does not exceed 1M.

The second step hash statistics for each small file, statistics of the words appearing in each file and the corresponding frequency (can use trie tree/hash_map, etc.), and take out the largest frequency of 100 words (can use the minimum heap containing 100 nodes), and 100 words and corresponding frequencies stored in the file, so that another 5000 files.

The third step heap/merge sort is the process of merging these 5000 files (heap sort can also be used). (If memory allows you to merge all the elements in these 5000 files, use heap to get top 100)

The above is the cloud computing common test questions and answers, the content is more comprehensive, Xiaobian believes that some knowledge points may be our daily work may see or use. I hope you can learn more from this article.

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