Active Directory Question ans answers

Active Directory Question ans answers

 1: What is Active Directory?

AD is a directory service in Windows 2000 networks.

It’s a hierarchical database that stores information regarding network recourses that makes centralized access.

Resources include users, computers, printers and any shared files and folders, servers, domains and sites across the network.

2: Minimum Requirements for an AD?

Windows 2000 or higher Server operating System

200 MB free space for AD

50 MB for log files

2: What is DHCP? (If you can alteast by heart it)

DHCP is dynamic host configuration protocol.

It’s used to assign the IP address automatically to the client pcs.

The DHCP Process is expressed by the words DORA

D-Discover

O-Offer

R-Request

A-Acknowledge

Discover-Once the client pc is requested to assign IP automatically it will search for the dhcp server first.

Offer-The DHCP Sever which accepts the discover packet will Offer the IP address for the client.

Request-Which ever packet that offers IP reaches the client first, the client will request for it.

Acknowledge: The Ip Offered   by the DHCP server is acknowledged by the server once the client request for it.

3: What is DNS?

DNS is Domain Naming System.

It’s used for resolving domain name to Ip address and IP address to Domain name.

Thre are two zones in DNS:

Forward Lookup Zone- Resolve Domain Name to Ip address

Reverse lookup zone-Resolve Ip address to domain name

4: What is the command used to check the DNS resolution?

Nslookup domain name

Or

Nslookup ipaddress

5: How AD and DNS is related?

AD uses DNS for finding and resolving the domain names. Without DNS a domain controller can act as only a stand alone server.

6: What is an exchange server?

An exchange server is an enterprise mail messaging system which uses MAPI clients.

7: What is VPN?

VPN is virtual private network which is used to secure your private network or personal network once you are connecting to a public network like internet. It also protects you from the net hackers. We can use software called SERA to connect to VPN

Scenario Questions:

A user is not able to access the internet? What all steps you take to resolve the issue?

1: Ask the user if he/she is able to login to the domain? And only internet is not working?

If user is bale to login to the domain and only internet is not working first you have to check the TCP/IP protocol settings.

Right click my network places…> properties….>local area connection…>right click and go for properties…..>select TCP/IP protocol properties and check whether the pc is assigned with static ip address.

If office network is using the dynamic ip address it should be DHCP enabled.

Change the network settings.

2: User is not able to login to the Domain?

1: Check if the pc is in network

2: Check the green light is blinking near to the network port.

3: If the light is blinking login as administrator and check the network settings.

4: Rejoin the pc to domain.

5: Check in the AD users and computers that the user account exists and it is not disabled.

6: Reset the user password and try to login

7: Try with any other ad account that they are able to login.

8: If the light is not blinking connect new network cable to the port and check if any issues with cable.

9: In the device manager check if the LAN is disabled.

10: After replacing the network cable also if it is not working connect the pc to a working network port and check. If working issue is with the network port

11: Again if it is not working reinstall the network drivers and check.

12: If not log the call for the vendor for the hardware replacement.

3: How to configure a network printer?

A network printer can be configured in two ways:

1: Using printers and faxes console

2: From the print server

1: Using printers and faxes console:

…>Go for add printer…>select the network printer or a printer attached to another computer...>select a printer in directory….> you can specify the name of the printer and give ok

2: Using the print server:

Go to start…>run….> \\ print server name\printer name

4: Once the user opens the browser its showing page can’t be displayed?

Go to tools…>options….>advanced Tab…>security-àenable the active x contents and Plug-in

Go to Connections…>LAN settings…..>select automatic settings if you are not using proxy.

Enter the proxy settings if used.

5: User is not able to connect to the VPN?

Check whether the user id is enabled to access the VPN

Check the Firewall settings in services.msc console.

Check the Remote Procedure Call is started in the pc since VPN is dependant on RPC

If the firewall is enabled stop the firewall.

Once the check is done check the user id in some other pc to check whether his id is active for VPN.

If he is able to access from other pc, reinstall the vpn software in his pc.

If his id is not working in any other pc, try logging to his pc with a vpn enabled id.

If that Id is working, there is no issue with the vpn software.

Ask the user to get the management approval to get the access and provide the contact number of the team if necessary.

5: User is not able to connect to the remote desktop?

Make sure that the remote desktop connection and remote assistance is enabled in user machine and to the pc which he is trying to connect.

Stop the windows Firewall Internet Connection sharing service.

Check the access permissions if it is a server

In the services.msc console make sure routing and remote access is enabled.

6: PC is not booting?

Switch on the power and check if any smoke is coming out of the pc.

If not check any beep sound is coming out.

If not check alteast the display is coming?

If the display is not coming and the pc is on check whether the monitor is working?

Check the RAM is working

Problem can be with the display card also

If display is coming and pc is not booting ask the user if he have recently installed any software because even that software can cause the problem.

Press F8 at booting to go for the logon option window.

Select last known good configuration and see if it is booting.

If not repeat the same step and select safe mode and boot.

If booting check is any software installed and removes it.

Try to do the system restore.

If nothing happens…try to repair the os….>if not working again connect the hardisk to other pc and take the backup. Reimage the pc.

7: How do we analyse the error with beep cods?

There are different kinds of beeps codes that indicate failure. It depends on manufactures.

Well known beep codes are:

Continuous beep sound: Problem with RAM

1 long beep and 2 short beeps –problem with VGA

1 long beep and three short beeps- DRAM parity

8: What all ways an OS can be installed?

We can install os manually from CD.

We can use L imagining software and create the image.

We can install from a ghost image if it the same model pc.

We can install the OS with the kick start if it is Linux.