What is #import? It’s a C preprocessor construct to avoid multiple inclusions of the same file. #import <Object.h> is an alternative to: #include <Object.h> where the .h file is protected itself against multiple inclusions: #ifndef _OBJECT_H_ … #define _OBJECT_H_ #endif What is id? It’s a generic C type that Objective-C uses for an arbitrary object. […]
Interview Questions
Puppet Interview Questions and Answers
What is Puppet? Puppet is a configuration tool that is used to automate administration tasks. Puppet Agent(Client) sends requests to Puppet Master (Server) and Puppet Master Push Configuration on Agent. What is Manifests? Manifests, in Puppet, are the files in which the client configuration is specified. What is Module and How it is different from […]
Load Balancer Interview Questions & Answers
What is Server Load Balancing? Server Load Balancing (SLB) provides network performance and content delivery by implementing a series of algorithms and priorities to respond to the specific requests made to the network. In simple terms, SLB distributes clients to a group of servers and ensures that clients are not sent to failed servers. What […]
Solaris Interview Questions and Answers
What is the command to do an interactive boot from the ok prompt? After Power on, press, STOP+A at the ok prompt type: ok> boot –a How can u check parameters in ok boot prompt? To check parameter on the OK prompt: ok> printenv How to Formating a disk in solaris? – add the disk, […]
HP Unix Interview Questions and Answers
How to find recently added lun in hp unix box? # ls -lrt /dev/disk/* then take the latest dated disk path and check th lun path: # inq |grep -i “c?t?d?” if you got /dev/disk/c?t?d? then get the legacy path and tehn check for lun path: # ioscan -m dsf /dev/disk/c?t?d? # inq |grep -i […]
Linux Network File System (NFS) interview questions
What is NFS? Network File System (NFS) is one of the oldest computer file sharing products in existence today. It is still the most popular for sharing directories of files between UNIX and Linux systems. NFS allows servers to designate specific directories to make available to designated hosts and then allows client systems to connect […]
Oracle RAC Interview Questions – Coherence and Split-Brain
What is Split-Brain? The term “Split-Brain” is often used to describe the scenario when two or more co-operating processes in a distributed system, typically a high availability cluster, lose connectivity with one another but then continue to operate independently of each other, including acquiring logical or physical resources, under the incorrect assumption that the other […]
Linux Interview Questions – Linux Printing (CUPS)
This post covers the most often asked how-to questions about Linux printing support. What tool provides Linux printing support? CUPS, the Common Unix Printing System What kinds of printers can be attached to a Linux system? Linux support printers which are connected using any of the following: Locally Attached Printer (LPT) through a local parallel […]
Oracle Interview Questions – Flash Recovery Area
Naming convention: Oracle 10g: FLASH Recovery Area Oracle 11g: FAST Recovery Area 1. What is a Flash Recovery Area ? The flash recovery area is an Oracle-managed directory, file system, or Automatic Storage Management disk group that provides a centralized disk location for backup and recovery files. All the files you need to completely recover […]
Oracle RMAN interview questions
General RMAN Questions What is RMAN and How to configure it? RMAN is an Oracle Database client that performs backup and recovery tasks on your databases and automates the administration of your backup strategies. It greatly simplifies the dba jobs by managing the production database’s backing up, restoring, and recovering database files. This tool integrates […]