System Administration ( week 1)
A KVM switch is used to:
A KVM switch is a device used to switch between multiple computers using one keyboard and video display, like a monitor and mouse. That's where the name "KVM" comes from!
In additon to setting up services, what other tasks does a sysadmin have to keep in mind?
A secure network is an important responsibility of a sysadmin! Services need to be routinely updated, and this is the responsibility of the sysadmin. Configuration management is a very important responsibility of any sysadmin! It's important to keep settings consistent and keep software updated to make sure compatibility is maintained.
What methods are commonly used by sysadmins to organize issues?
A sysadmin doesn't have to be awake and available 24/7. They can monitor their services and have it alert them in case of a problem. A common industry standard is to use some sort of ticketing or bug tracking system. This helps you organize and prioritize issues and document troubleshooting steps.
Which of the following can be a responsibility of a systems administrator?
A systems administrator has a wide range of responsibilities; this can include, but is not limited to, setting up new user accounts and machines; maintaining servers; and troubleshooting user issues.
What is it called when you set aside a regular time to update your servers at once?
Batch update means that once every month or so, you update all your servers with the latest security patches. You'll have to find a time to take their services offline, perform the update, and verify that the new update works with the service.
Which type of server hardware is the most space-efficient?
Blade servers are like rack servers, but even thinner! Very space-saving.
Which of these terms describe a facility that stores hundreds, if not thousands, of servers?
Companies with large amounts of data have to keep their information stored in places like data centers. A data center is a facility that stores hundreds, if not thousands, of servers.
An IT department uses a pre-used laptop out of their hardware inventory for a new user. Which stage of the hardware lifecycle does this scenario belong to?
Deplo?? Retirement???
What factors are most important when planning for disaster and recovery?
It's super important to make sure that your company's data is routinely backed up somewhere, preferably far away from its current location. If the entire facility is compromised, your data will still be safe. Backups provide data redundancy in case of disaster. You can't account for everything, but you can be prepared to recover from it.
KVM switch
Keyboard Video Mouse Switch
What is a good policy to enforce on passwords?
Passwords are one of the first and biggest security policies that help prevent unauthorized access. A good policy for passwords is to make them long and with a mixture of symbols, numbers, uppercase, and lowercase characters.
Name all the parts of the hardware lifecycle?
Procurement Deployment Maintenance Retirement
Rollback
Reverting to the previous state
What is a server?
Servers are essentially software or computers that provide a service to other software or computers.
What are some important elements of working with vendors as a sysadmin?
Setting up business accounts with large vendors is usually beneficial since these companies can offer discounts to businesse
Which are examples of IT infrastructure?
Sharing files with peers is an important part of IT infrastructure! The devices and services end users need to utilize everyday are an important part of IT infrastructure! The Internet resources, including websites, of an organization are an important part of IT infrastructure!
A script sets up user accounts and installs software for a machine. Which stage of the hardware lifecycle does this scenario belong to?
The deployment stage of the hardware lifecycle can also include situations where a script automatically configures user accounts and software. It doesn't just have to be a person who deploys the hardware.
A machine is having issues, so the user is responsible for getting the machine serviced. Which stage of the hardware lifecycle does this scenario belong to?
The maintenance stage of the hardware cycle occurs when a machine needs to be serviced or fixed.
An IT department submits a purchase order to buy a new computer from a vendor. "Purchase orders" are documents issued by buyers that indicate a purchase they want to make from a seller. Which stage of the hardware lifecycle does this scenario belong to?
The procurement stage of the hardware lifecycle is when an employee obtains access to the hardware. This can be done via a purchase order.
secondary or a stand-by machine
This machine will be exactly the same as a production machine, but won't receive any traffic from actual users until you enable it to do so.
Servers Types
Tower Servers Rack Servers Blade Server
Test environment
a virtual machine running the same configuration as a production environment, but isn't actually serving any users of the service
IT infrastructure
encompasses the software, the hardware, network, and services required for an organization to operate in an enterprise IT environment.
system administration
responsible for maintaining reliable computer systems, in a Multi-user environment.
Reproduction Case
you're creating a roadmap to retrace the steps that led the user to an unexpected outcome. Like reaching an error page. -What steps did you take to get to this point? -What's the unexpected or bad result? -And what's the expected result?