Tech Support / L1-L3

List the levels of the OSI model.

What tasks do you perform with Postgres/Oracle in terms of volume and type?

Are you skilled in working with Nginx, configuring web services?

How many domains and domain controllers were in your infrastructure?

How familiar are you with Active Directory?

What is a subnet mask and what does it do? How many IP addresses are in a subnet with a 255.255.255.0 mask?

Role-playing game: a client calls with a complaint about the lack of internet. The connection from the provider to the router is fine. Help the client.

What else needs to be checked in a more complex infrastructure (hundreds of servers, dozens of domain controllers)?

What is the difference between a repeater and a Mesh network?

What is SLA? Why is it needed?

Middle

ГК Иннотех

An incident occurred during maintenance — how do you learn about incidents, and how do you respond?

If it is necessary to reboot the domain controller, how can you ensure that everything continues to work after the reboot?

Have you worked with Microsoft clustering?

Знаком ли с ITSM-системами? Какие процессы ITSM знаешь?

What is the difference between SSH and Telnet?

What is ADFS and how was it used?

Why do not all use Serializable? How does the isolation level affect performance?

What is the difference between a table and a view?

Middle

ГК Иннотех

Select operator in Go — features of working with multiple channels

Tell about your experience at [company]: what you did, what was the project?

Principal

Axenix