Table of contents
1. Knowledge that operation and maintenance implementation engineers need to have
1.1. What are operation and maintenance engineers and implementation engineers?
1.2. What do operation and maintenance engineers and implementation engineers do?
2.1.1.CPU (Central Processing Unit)
That’s it for today, I hope it helps you! ! !
1. Knowledge that operation and maintenance implementation engineers need to have
1.1. What are operation and maintenance engineers and implementation engineers?
- Operation and maintenance engineers are responsible for the stability of the service and ensuring that the service can provide uninterrupted services to users.
- The implementation engineer is responsible for project implementation and on-site training . Generally speaking, when you are out and about , you will go wherever there is a project. Because after the product is sold, how to install it, how to lay it out, and how to enter the initial information all need to be handled by implementation engineers.
1.2. What do operation and maintenance engineers and implementation engineers do?
Operation and Maintenance Engineer:
- Before product release: Responsible for participating in and reviewing the rationality and operability of the architecture design to ensure efficient and stable operation after product release .
- Product release stage: Responsible for using automated technology or platforms to ensure that the product can be released and launched efficiently, and then it can be iterated quickly and stably.
- Product operation and maintenance phase: Responsible for ensuring the stable operation of the product 24/7 , during which various problems that arise can be quickly located and solved; continuously optimizing the rationality of system architecture and deployment in daily work to improve the stability of system services .
Implementation Engineer:
- Including the installation, debugging and maintenance of commonly used operating systems, application software and software developed by the company, as well as a small amount of hardware and network work.
- Responsible for on-site training: on-site software application training; assisting in project acceptance.
- Responsible for the initial confirmation of requirements.
- Control project progress.
- Communicate individual needs with customers.
- Responsible for project maintenance.
1.3. What skills do operation and maintenance engineers and implementation engineers need to possess?
- Commonly used databases, such as: Sql2000 , sql2005 , sql2008 , Oracle , mysql ; can install, debug, maintain, and use common functions in them, such as backup, restore, etc.
- Commonly used operating systems, such as: Windows7 , Windows8 , Windows10 , Windows xp
- Server operating system: such as:
- Window server 2008 will configure group policy, registry, shortcut keys, firewall, etc.; install SQL and IIS under windows server , and can publish programs under IIS , and the same LAN can access the programs published by IIS , port configuration, and hardware Firewall, software firewall
- Know the common Linux commands , installation, debugging, maintenance, and solve common problems . Install, uninstall, debug and maintain jdk tomcat mysql oracle under liunx and be able to publish programs and shell scripts under tomcat ;
- hardware
- Computer rooms, cabinets, network cables and optical fibers, PDUs , servers, network equipment, security equipment, etc.; understand computer configurations, and be able to easily diagnose problems and perform maintenance . Various printers can be easily installed, debugged and maintained.
- network
- Understand the basic knowledge of networks, understand the establishment of small local area networks , understand integrated wiring, be able to make crystal plugs, understand the difference between switches and routers, and be able to use them, etc.
- Office Software
- Proficient in using OFFICE and various remote tools
- etc.
2. Composition of computer
2.1. Introduction
1、CPU
1 ) Main frequency
2 ) CPU cache
2、Memory
1. External memory
2. Internal memory
3 、I/O
input / output port
4、BUS
system bus
5. Motherboard
2.1.1. CPU (Central Processing Unit)
1 ) Main frequency
2 ) CPU cache ( CPU cache is a temporary memory located between the CPU and memory. Its capacity is smaller than memory but the exchange speed is faster. )
2.1.2 . Memory
- Memory is divided into internal memory and external memory. External memory is mainly U disk, hard disk, etc. In a general sense, we will classify external memory as I/O devices. So the memory here we only refer to memory.
- Memory is one of the important components in the computer. It is a bridge for communication with the CPU and a storage space that the CPU can directly address.
2.1.3. I/O (input / output port)
- Each device will have a dedicated I/O address to handle its own input and output information. Common I/O devices include cameras, hard drives, printers, mice, keyboards, etc.
- The hard disk sends data to the memory for processing by the CPU through the I/O interface.
2.1.4. BUS (Bus)
The system bus is a transmission harness composed of wires. It is a common channel for CPU , memory, input and output devices to transmit information. The various components of the host are connected through the bus, and the external devices are connected to the bus through corresponding interface circuits, thus forming a computer hardware system .
Classified by function :
- Data bus : used to transmit data information .
- Address bus : It is specially used to transmit addresses. Since addresses can only be transmitted from the CPU to external memory or I/O ports, the address bus is always unidirectional and tri-state, which is different from the data bus .
- Control bus : used to transmit control signals and timing signals .
Classified according to level :
- Internal bus: Within the CPU , the bus used to transmit data between registers and between the arithmetic logic component ALU and the control component is called an on-chip bus ( that is, the bus inside the chip ) , such as I2C bus, SPI bus, SCI bus, etc.
- System bus: Also known as internal bus or board-level bus, it is the bus between each plug-in board and the system board in the microcomputer, and is used for interconnection at the plug-in board level. Because the bus is used to connect the functional components of the microcomputer to form a complete microcomputer system, it is called a system bus. The microcomputer bus that people usually refer to refers to the system bus, such as ISA bus, PCI bus, etc.
- External bus: It is the bus between the computer and external devices, such as IDE bus, USB bus, SCSI bus, etc.
Classified according to transmission method :
- Serial bus: All signals reuse a pair of signal lines. The communication rate of the serial bus is relatively low, but it is more convenient and flexible in microprocessor circuits where the amount of data communication is not large. Such as USB bus, SPI bus, I2C bus, etc.
- Parallel bus: Each signal has its own signal line. The parallel bus has fast communication speed and good real-time performance, but the cost will increase because it occupies many interface lines. Such as ISA bus, PCI bus, etc.
2.1.4. Motherboard
The motherboard provides a series of connection points for processors, graphics cards, sound cards, hard drives, storage, I/O devices and other devices. They usually plug directly into the relevant slots, or are wired. The most important component on the motherboard is the chipset. The chipset usually consists of a north bridge and a south bridge. These chipsets provide a common platform for the motherboard for different devices to connect and control the communication of different devices.
3. Operating system
Operating System (OS, Operating System) :
A collection of programs that manage and control hardware and software resources in a computer system and rationally organize computer workflows to facilitate user use.
Operating system classification:
- Character-based interface—DOS, Unix , Linux
- Graphical user interface - Windows, ubuntu
4. BIOS related knowledge
4.1.Getting started with BIOS
Basic Input / Output System ( BIOS ) is a preinstalled program used during startup on Windows -based computers
basic concept:
Boot process: When you turn on your computer, BIOS is the first program to be executed. Its main task is to initialize the system hardware, detect and configure connected devices (such as hard disk, memory, monitor, etc.), and then pass control to the operating system's boot loader.
CMOS settings: In the BIOS chip, there is a small rewritable read-only memory (CMOS, Complementary Metal-Oxide-Semiconductor), which is used to store the basic configuration information of the computer, such as date, time, hardware settings, etc. This information can be adjusted by entering the BIOS setup interface.
BIOS setup interface: You can enter the BIOS setup interface by pressing a specific key that appears when the computer starts (usually Del, F2, F10, etc., depending on the motherboard manufacturer). Here, you can configure hardware settings, adjust the system time and date, change the boot order, and more.
Boot order: In the BIOS settings, you can specify which device the operating system should be loaded from when the computer starts. This is called the boot sequence and can usually be set up to boot from a hard drive, CD, USB drive, etc.
Firmware Updates: The BIOS can obtain new features, fix bugs, or improve hardware compatibility by flashing (updating) the firmware. In general, firmware updates need to be done with caution, as an incorrect update can render the system unstable or unusable.
POST (Power-On Self-Test): During the startup process, the BIOS executes POST (Power-On Self-Test) to detect whether the system hardware is operating normally. If a problem is found, the BIOS may beep or display an error message on the screen.
BIOS password: Some computers allow users to set a BIOS password to increase system security. In this way, only people who know the password can enter the BIOS setup interface.
4.2.Entry method _
To enter the BIOS setup interface, you usually need to press a specific key when the computer starts. This button may vary depending on your computer brand or motherboard manufacturer. Common keys include:
- Delete key
- F2 key
- F10 key
- F12 key
- Esc
These keys usually appear somewhere on the screen when the computer starts, such as at the bottom or top of the startup screen. During startup, quickly press the corresponding button until you enter the BIOS setup interface.
In addition, some brands of computers may also use special key combinations, such as pressing Ctrl + Alt + Esc or Ctrl at the same time
The six tabs are: Hardware Information Settings Date Time Security Settings Startup Settings Restart
Main is mainly hardware information, including: bios version, production date, host number, CPU information, memory, network card physical address, etc.
Config is the setting interface, including network, USB , keyboard, mouse, display, power, beep and alarm, hard disk mode, CPU settings and other information
5. Mind map
That’s it for today, I hope it helps you! ! !