Month: June 2009

Linux Interview Questions: Experienced

1)How to implement Squid proxy?2)How to see bandwidth used by ftp user?3)ow to implement Squid as reverse proxy?4)How to see logs of Squid proxy?5)How to see cache in Squid proxy?6)How to clear Cache in Squid proxy?7)Totally how many configuration modules are there in Squid proxy?A)nearly some 127 modules in squid proxy8)What is the authentication used in Samba when it is used as PDC?9)Where is the logs present for samba PDC server?10)Some of the logs in my system are not time stamped how to resolve this ?11)How to see what is the encryption used by ssl?11)How to host different domains on with different ip add on single system?12)How to assigned different ip add to single interface?13)How to assign different ip addresses to single interface? what is the default gateway to each ip address? Please visit https://www.linuxnix.com for more linux admin...

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Linux Interview questions:Experienced

1)What is the difference between Xen and VMware?A)XEN : Xen is an open-source virtualization solution. The Xen hypervisor acts as a thin layer between the hardware and the operating system, allowing multiple virtual servers to run simultaneously on a single physical server. Each virtual server acts independently of the others, with it’s own allocated area of RAM and virtual disks.VMware : VMware is a company that provides virtualization software for x86-compatible computers. 2)Can we install HPUX( (Hewlett Packard UniX) on Vmware? A)No. Because HPUX can be installed only on PA-RISC or Itanium and Vmware can not emulate this hardware. 3)How to use SAMBA as PDC(Primary Domain Controller)? 4)What is IPchains? A)Ipchains is a utility for Linux that System Administrators can use to create and modify the ruleset that is used for their host based firewall. These rules are used by a system to decide whether or not it is going to allow a specific remote connection. 5)What is the difference between IPchains and IPtables? IPchains : Ipchains is a utility for Linux that System Administrators can use to create and modify the ruleset that is used for their host based firewall. These rules are used by a system to decide whether or not it is going to allow a specific remote connection. IP tables : Iptables is a generic table structure that defines rules and commands as part of...

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Mail system explained

Send-mail Send mail is one of the old and widely used mail delivery agent/Mail system. Sl.no Agent Description from Wikipedia 1 Mail User Agent(MUA) An e-mail client (also mail user agent (MUA) or e-mail reader) is a frontend computer program used to manage e-mail. 2 Mail Transfer Agent(MTA) A mail transfer agent (MTA) (also called a mail transport agent, message transfer agent, or smtpd (short for SMTP daemon), is a computer program or software agent that transfers electronic mail messages from one computer to another.The term mail server is also used to mean a computer acting as an MTA that is running the appropriate software. The term mail exchanger (MX), in the context of the Domain Name System formally refers to an IP address assigned to a device hosting a mail server, and by extension also indicates the server it’self. 3 Mail Delivery Agent(MDA) A Mail delivery agent (MDA) is software that delivers e-mail messages after they have been accepted on a server, distributing them to recipients’ individual mailboxes. 4 Mail Access Agent(MAA) A way of remotely accessing a mail-spool, for example POP3 or IMAP. A short description how a Mail communication will work: Here I will take an example how a mail from John(john@domain1.com) to his friend Jelo(jelo@domain2.com) will be delivered.Step1:first John has to write a e-mail by specifying who is the receiver of this mail(in this case...

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ABOUT ME..!

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My name is Surendra Kumar Anne. I hail from Vijayawada which is cultural capital of south Indian state of Andhra Pradesh. I am a Linux evangelist who believes in Hard work, A down to earth person, Likes to share knowledge with others, Loves dogs, Likes photography. At present I work at Bank of America as Sr. Analyst Systems and Administration. You can contact me at surendra (@) linuxnix dot com.