Software Industry position summary 4-system, security, and maintenance

System, security, and maintenance
Put these three types together. On the one hand, I have little experience in this field, but I am only engaged in work at ordinary times, on the other hand, I think the job content in these categories is that many jobs need to master the technology, but these jobs require more refined technology and more workload, for example, the system administrator monitors the server every day and grants permissions to the accounts of colleagues who join the team to cancel the old ones. Now we will introduce these categories of jobs one by one. The last important reason is that these jobs are related to software jobs, but they are somewhat different from software jobs.
Network Engineer
Software companies of a certain scale or large enterprises need to connect their computers to the Internet. network construction requires wiring and debugging of network devices such as switches, routers, fire walls, VoIP devices, and storage devices, you also need to manage various devices connected to the network, such as server IP addresses, IP addresses of a group of computers, and network printers. Specifically, network engineers are engaged in the following types of work:
1. Responsible for the network connection in the IDC and the Division and configuration of network segments.
2. establishes and improves the topology of the system network, and completes system route parsing and data sorting.
3. Responsible for IDC line arrangement and protocol specifications.
4. Responsible for network connection and network sharing between computers, and for security settings between networks.
5. analyzes Network barriers and promptly handles and solves network problems.
6. Use the network test analyzer to regularly optimize the existing network.
According to the expertise of network engineers, there are: configuration management and wiring construction.
Those who like the Internet, rather than those who like the Internet, are devoted to the development of this position. My graduate students are studying the network and studying the network protocol consistency test, however, I did not continue to develop in this direction. It was not that network engineers did not develop, but I did not have such an opportunity in my work. Some of my colleagues have been engaged in network work. In my later work, network technology knowledge helped me a lot. I often put forward professional terms in technical seminars with developers to surprise my colleagues. Now, let's briefly talk about the job development of network engineers. One is to directly enter a professional network technology company such as Huawei. Your job may be a pre-sales or network engineer, customers such as China Telecom and China Mobile have bought equipment. You need to help them install and debug the equipment. With technical accumulation and work experience, you may become the supervisor of a certain department of the company, which is responsible for the business of a certain type of enterprise. Second, you have applied for a non-network professional company or even a non-IT company, you may develop your experience from the basics to certain technologies, such as network storage engineers, Integrated Wiring engineers, and network security engineers. Finally, we will go to the expert level, such as IT Project Manager, network supervisor, or technical expert.
System Administrator
Many companies may not specifically set up such a position, but the system administrator is really indispensable. Sometimes it is a part-time job of a senior supervisor who is mainly responsible for server management and maintenance, A server is an important resource of every company. Its computing, storage, and organization management domain control functions, professional technical knowledge and rich experience are required to make it stable, secure, and efficient.
The work of the system administrator is roughly divided into two types of hardware and software. Hard-ware: for example, when installing the operating system on the server, the server creates a disk array based on the business running on the server, and does raid1 or raid5. Recently, the server is always slow to use the log tool to check the problem, those parts need to be upgraded. One day, an alarm is reported on a device, but the server is still running. How to safely switch the alarm parts must not let the server go down. Software, the most typical is AD maintenance, management and maintenance account, or maintenance of an important software system, for example, I have a senior Test Engineer in my organization who manages and maintains the StarTeam server on a part-time basis.