Friday, July 20, 2018

Server Question and Answers

Server Questions and Answers.

Interview Questions asked for server admin position- 


Q- What is ADDS ?

Ans-    ADDS stands for Active Directory Domain Service. It is a feature of Microsoft Servers , introduced  in server 2000 . It is used to create a domain based network where all computers follow a single domain name and managed by a central location called Domain Controller.
Which server hosts ADDS service , can control activities of computers connected in domain .
Domain Controller stores information about users , groups and computers connected in network.

Q- What is  DNS ?
Ans-   DNS  stands for Domain Naming System. It is used for name resolution. It resolves query asked by clients. DNS also provide a hierarchical name space in a Domain environment . It is also used with internet to resolve website address to IP address. It can be integrated with ADDS or can be standalone. It resolves host name to IP address and IP address to host name. It has many records related to network like host record (record of client computers), Pointer record (IP address of client PCs) ,NS (Name server ) record , SOA (Start Of Authority ) record etc.

Q- What is Domain?
Ans-    Domain is a logical group of computers where all computers access services from a central location. All computers are managed by a single central point. In a Domain there is  Domain Controller who manages activities of client computers.

Q- What is FTP ?

Ans- FTP stands for File Transfer Protocol. it is used to download and upload files , We can send our data to multiple users in a LAN or WAN . This service can be configured on server operating system as well as client Operating System. It uses Port number 20 and 21. We create a FTP site to publish data. Using this site address anyone can access data. We can apply permission on that site for specific user but it is configured by default for anonymous user.

Q- What is DHCP ?

Ans- DHCP stands for Dynamic Host Configuration Protocol . It is used to assign IP address automatically to connected hosts in network. We can define a IP address pool(ranges of IP ) to distribute IP address. DHCP can be configured on many networking devices like Server, Router, Firewall , Access Point etc. It uses DORA process to assign IP address automatically . Where D=Discover, O=Offer, R= Request and A= Acknowledgement . There are many advantages to use DHCP-
1-record of distributed IP address
2-No chances of IP address conflict.
3- According to need IP address can be reserve for hosts using their MAC address.
4- Time saving task in large network.

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