Shulou(Shulou.com)06/02 Report--

What are the future prospects for cloud computing? What are the common interview questions for cloud computing? Due to the double advantages of continuous increase in policy and technological breakthroughs, China's cloud computing industry has entered a period of development opportunities, and cloud computing talents have also become the object of high-paid employment. Many aspiring students are optimistic about the future of cloud computing and want to enter the development of cloud computing until they master the real technology. The following is to share common cloud computing interview questions and answers to help you position more accurately and enter the job more quickly.

What are the different layers of cloud computing?

1) SaaS: software as a service that gives users direct access to cloud applications without having to install anything on the system.

2) IaaS: infrastructure as a service that provides infrastructure in terms of hardware (such as memory and processor speed, etc.).

3) PaaS: platform as a service, which provides a cloud application platform for developers.

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

Scalability is a feature of cloud computing. With the help of scalability, as long as the resource capacity is increased accordingly, the increased workload can be handled. Flexibility emphasizes the concept of enabling and decommissioning huge resource capacity.

What are the different parts of a cloud architecture that are necessary?

1) inbound cloud; 2) processor speed; 3) cloud storage service; 4) cloud provider service; 5) inter-cloud communication.

What are the different stages experienced in the cloud architecture?

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

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

To provide performance transparency and automation, the cloud architecture uses many tools. It can manage cloud architecture and monitoring reports, and can also share applications that use cloud architecture. Automation is a key part of the cloud architecture and helps improve quality levels.

How to understand hybrid cloud and community cloud?

Hybrid cloud: includes multiple service providers that combine the capabilities of both public and private clouds. When companies need both private and public clouds, they use hybrid clouds.

Community cloud: the cost of this model is quite high, and community cloud is used when multiple business organizations share the same 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: to provide recovery and backup mechanisms to ensure that all data is safe and sound in the event of a disaster or system failure.

What are the hypervisors and their types in cloud computing?

The hypervisor is a virtual machine monitoring tool that manages resources for virtual machines. There are two main types of hypervisors:

Type 1: guest virtual machines run directly on host hardware, such as Xen and VMWare ESXI.

Type 2: the guest virtual machine runs on hardware through the host operating system, such as KVM and Oracle VirtualBox.

There is a 1G file in which each line is a word, the size of the word is no more than 16 bytes, and the memory limit is 1m. How to set the 100 words with the highest return frequency.

The first step is to map the divide-and-conquer / hash to the sequential read file. For each word x, take hash (x)% 5000, and then save it to 5000 small files according to this value. X4999). So each file is about 200k. If some of the files are more than 1m in size, you can continue to divide them down in a similar way until the size of the decomposed small files is no more than 1m.

The second step is hash statistics for each small file, count the words that appear in each file and the corresponding frequency (you can use trie tree / hash_map, etc.), and take out the 100th words with the largest frequency (you can use the minimum heap with 100nodes), and save the 100words and the corresponding frequency into the file, thus getting another 5000 files.

The third step of heap / merge sorting is the process of merging these 5000 files (you can also use heap sorting). (if memory allows, you can merge all the elements in these 5000 files and use the heap to get top 100s.)

If you want to quickly grasp the cloud computing technology needed by the enterprise and accumulate more practical experience in cloud computing projects, you can choose professional study to be qualified for the positions of operation and maintenance engineer, cloud computing engineer and Web*** test engineer, so that you can easily realize your dream of high salary!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.