This video provides a basic introduction into the top 10 most important formulas used in excel. These include the average function, autosum, Sum If, Count, Counta, Count If function, Concantenate, If logical function, Vlookup, and Drop Down Lists.
Пришло время профилактики механизма патефона, который был мною куплен 15 лет назад.Процесс вскрытия решил представить вашему вниманию, а заодно и рассказать об этом чуде техники поподробнее.Ну и шеллачные (не виниловые) пластинки на 78 об/мин. немного покрутить, в надежде, что правообладатели музыки не предъявят свои права и не влепят в моё видео свою рекламу.
Предыдущее видео с этим патефоном www.youtube.com/watch?v=aduwdbMkTFM
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Как заземляющие устройства обеспечивают электробезопасность. Какие электроприборы и зачем должны соединяться с контуром заземления. Системы заземления TN-C, TN-S, TN-C-S, TT, их особенности, достоинства и недостатки. Что будет при обрыве совмещенного нулевого проводника. Что такое петля фаза-нуль.
И можно ли построить контур заземления в городской черте.
A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially single-user computers, such as servers. The system administrator seeks to ensure that the uptime, performance, resources, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so.
To meet these needs, a system administrator may acquire, install, or upgrade computer components and software; provide routine automation; maintain security policies; troubleshoot; train or supervise staff; or offer technical support for projects
Introduction to System Administration and IT Infrastructure Services
Course Introduction
What is Systems Administration?
Servers Revisited
The Cloud
Systems Administration Tasks
Organizational Policies
IT Infrastructure Services
User and Hardware Provisioning
Routine Maintenance
Vendors
Troubleshooting and Managing Issues
In Case of Fire, Break Glass
What are IT Infrastructure Services?
The Role of IT Infrastructure Services in SysAdmin
Types of IT Infrastructure Services
Server Operating Systems
Virtualization
Remote Access Revisited
Network Services
FTP, SFTP, and TFTP
NTP
Network Support Services Revisited
DNS
DNS for Web Servers
DNS for Internal Networks
DHCP
Troubleshooting Network Services
LectureUnable to Resolve a Hostname or Domain Name
Software Services
Configuring Communication Services
Configuring Email Services
Configuring User Productivity Services
Configuring Security Services
Heather Managing Self Doubt
File Services
What are file services?
Network File Storage
Print Services
Configuring Print Services
Platform Services
Web Servers Revisited
What is a database server?
Is the website down?
Introduction to Directory Services
What is a directory server?
Implementing Directory Services
Centralized Management
What is centralized management?
LDAP
What is LDAP?
What is LDAP Authentication?
Heather Overcoming Obstacles
Active Directory
What is Active Directory?
Managing Active Directory
Managing Active Directory Users and Groups
Joining an Active Directory Domain
What is Group Policy?
Group Policy Creation and Editing
Group Policy Inheritance and Precedence
Group Policy Troubleshooting
What is OpenLDAP?
Managing OpenLDAP
Planning for Data Recovery
LectureWhat is Data Recovery?
Backing Up Your Data
Backup Solutions
Testing Backups
Types of Backup
User Backups
Disaster Recovery Plans
Whats a Disaster Recovery Plan?
Designing a Disaster Recovery Plan
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Credit: The creator of this contents is Google.
License: Creative Commons Attribution-ShareAlike 4.0 International License
You can take this professional certificate here: www.coursera.org/specializations/google-it-support
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