Interview Questions

What is Data encryption? Data encryption ensures data safety and is very important for confidential or critical data. It protects data from being read, altered, or forged while transmission. What is the Public Key Encryption? Public key encryption uses a public and private key for encryption and decryption. In this mechanism, the public key is […]

What is Photoshop? Adobe Photoshop is a professional image editing software package that can be used by experts and novices alike. While this handout offers some very basic tips on using the tools available in Photoshop, more comprehensive guidance can be accessed on the web or in the help menu of your version of Photoshop. […]

What’s AJAX? AJAX (Asynchronous JavaScript and XML) is a newly coined term for two powerful browser features that have been around for years, but were overlooked by many web developers until recently when applications such as Gmail, Google Suggest, and Google Maps hit the streets. Asynchronous JavaScript and XML, or Ajax (pronounced “Aye-Jacks”), is a […]

What is hibernate (Java)? Hibernate is an object-relational mapping (ORM) library for the Java language, providing a framework for mapping an object-oriented domain model to a traditional relational database. Hibernate solves object-relational impedance mismatch problems by replacing direct persistence-related database accesses with high-level object handling functions. Why do you need an ORM tool like Hibernate? […]

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. […]

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 […]

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 […]

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 […]