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Showing posts from October, 2010

DNS : Troubleshooting - Part 1

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1. TCP/IP Configuration Points to Public DNS Servers
A perfect TCP/IP configuration gives better communication performance of a Network.Check the TCP/IP Configuration twice or thrice to make sure everything configured perfectly. Try pinging the other servers in network using the names (not using IP's). Try NSLOOKUP, check the name resolution working correctly or not. If NSLOOKUP, gives any errors try checking the A records and PTR records for that server. Make sure the DNS server working correctly and the correct DNS server configured on the server you are working on. 2. Improper DNS Suffix Handling
If your computer is multi homed (multiple networks), make sure the DNS suffix is configured correctly for the correct interface. I mean, for every computer only one interface is configured with the suffix because every network only has one DNS server and this interface is configured to communicate with that DNS server. So make sure the interface which is communicating to DNS …

Common Job Interview Questions....

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Hi Guys,Welcome Back!!!Today i want to share something common to everybody. Here i was posting some of the common interview questions which are asked by most of the employers. Please click on the link below to download the doc. Share it to everybody.... Common Job Interview Questions - Click HereThanks for visiting my blog, Please subscribe now to get the latest posts delivered to your INBOX. Related PostsActive Directory Interview Questions & Tips... Windows Desktop Support Interview Questions VMware Interview Questions Part - I VMware Interview Questions Part - II Other VMware Posts Other Windows Posts

Understanding DNS : Part - II

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Hi Guys, In my previous discussion about Understanding DNS, you learned most of the basic things related to DNS. In this post i want to elaborate more about DNS. Let's start...DNS RecordsThere are so many records associated with a DNS Server. Name resolution process does not happen in a proper way with out these records.As you know the DNS server main purpose is to resolve the host names to IP's and vice versa.A Record : Contains information about IP address. It is helpful in resolving host names to IP addresses. PTR Record : Pointer record, contains information about host name. It is helpful in resolving IP address to hostname. CNAME Record : Alias of A Record. It is helpful in giving multiple names to a single host. Which means, the same host is able to provide multiple services. In that case, for segregation of service and to communicate with that service we need to give different names to each service. Even though these services are hosted on a single server, but we can sen…

VMware : Snapshots - Part I

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Hi Guys,First of all thank you so much for your extra-ordinary support to my blog and at the same time sorry for taking long time to post this new post :). I am getting lot of emails related to vmware especially, thanks to the readers. Keep sharing your knowledge using the features provided to you at the bottom of this blog. When you share knowledge you will learn something new from the other, that is what happening to me.Let's talk about VMware snapshots today. Apart from all the features we have discussed so far, this feature is very useful in saving lot of valuable time in terms of recovery of a virtual machine.What is a Snapshot of a Virtual machine?It is the running state image of a virtual machine including the file system and memory state.What happens when you take a snapshot of virtual machine?When you take a snapshot of virtual machine, it makes a copy of the .vmdk file and its memory, saves them along with the other virtual machine files. You can take more than one snaps…