Interview question and answer: Interview Questions for System Engineer

Interview Questions for System Engineer

December 11, 2015 System No comments

These questions will helpful for your interview System Engineer

Questions	Sample answers
What is a Domain?	A domain is defined as a logical group of network objects (computers, users, devices) that share the same Active Directory database. A tree can have multiple domains.
How do you backup AD?	Backing up Active Directory is essential to maintain the proper health of the AD database. You can backup Active Directory by using the NTBACKUP tool that comes built-in with Windows Server 2003 or use any 3rd-party tool that supports this feature.
What do Forests, Trees, and Domains mean?	Forests, trees, and domains are the logical divisions in an Active Directory network. A domain is defined as a logical group of network objects (computers, users, devices) that share the same active directory database. A tree is a collection of one or more domains and domain trees in a contiguous namespace linked in a transitive trust hierarchy. At the top of the structure is the forest. A forest is a collection of trees that share a common global catalog, directory schema, logical structure, and directory configuration. The forest represents the security boundary within which users, computers, groups, and other objects are accessible.
What are main Email Servers and which are their ports?	Incoming Mail Server (POP3, IMAP, HTTP) Outgoing Mail Server (SMTP) POP3 – port 110 IMAP – port 143 SMTP – port 25 HTTP – port 80 Secure SMTP (SSMTP) – port 465 Secure IMAP (IMAP4-SSL) – port 585 IMAP4 over SSL (IMAPS) – port 993 Secure POP3 (SSL-POP) – port 995
When do we use WDS?	Windows Deployment Services is a server role used to deploy Windows operating systems remotely. WDS is mainly used for network-based OS installations to set up new computers.
What is DNS and which port number is used by DNS?	The Domain Name System (DNS) is used to resolve human-readable hostnames like www.intenseschool.com into machine-readable IP addresses like 69.143.201.22. DNS servers use UDP port 53 but DNS queries can also use TCP port 53 if the former is not accepted.
Where is the AD database stored?	The AD database is stored in C:\Windows\NTDS\NTDS.DIT.
What is Group Policy?	Group Policy allows you to implement specific configurations for users and computers. Group Policy settings are contained in Group Policy objects (GPOs), which are linked to the following Active Directory service containers: sites, domains, or organizational units (OUs).
What is Domain Controller?	A domain controller (DC) or network domain controller is a Windows-based computer system that is used for storing user account data in a central database. It is the centrepiece of the Windows Active Directory service that authenticates users, stores user account information and enforces security policy for a Windows domain. A domain controller allows system administrators to grant or deny users access to system resources, such as printers, documents, folders, network locations, etc., via a single username and password.