Topic :: Scala
What is scalable, portability in the view of J2EE?
Scalability, Availability, Integration with internet, etc.)?
Net app interview questions ============================ . Storage Fundamentals: - what is Raid? What are different kind of Raids? - Difference between all of Raids , Advantage of one raid over other - What are FCP & ISCSI, Difference between them. - FC Topologies, Iscsi commands - How to mount a Lun on Windows/Linux - NFS and CIFS - Difference between SAN, NAS and DAS - Different Backup methodologies, Snapshot, mirror, Disaster Recovery, High Availability, Cluster concepts 2. Network Fundamentals: - TCP/IP and ISO/OSI layers - What is DHCP, DNS, SNMP, Router, Hub, Switch, HTTPS , HTTP, telnet , ssh, rsh - Different SNMP versions (V1, V2, V3) - SNMP traps - Ipv4 and Ipv6 addressing 3. Database: - SQL queries, Joins (may ask you to write queries with complex joins) - Aggregate functions - Schemas, Tables, views (create, delete, alter, drop etc) 4. Testing - Bug tracking process, Types of Bugs - Difference between priority and Severity of Bug - Your best bug , what will you do when your bug is not fixed/rejected etc. - What is Functionality/Sanity/Stress/Upgrade & revert/Performance/negative/Release test/regression tests. How you have done these in your past projects. - Black box testing, grey box testing - May ask to write test cases on a given scenario - What is test plan and test summary/strategy document. Different sections in these documents. - SDLC, Test Lifecycle and approach to test a product (Given a product what different kind of testing you will do) 5. Perl ( in addition, you may be asked to write scripts on below areas) - Regular expressions - File/Directory Handling - Scalars, Arrays and Hashes - Packages and Modules - Use and require statements - Go through Net::Telnet, Net::SNMP, Net::SSH modules in perl
SET is the ANSI standard for variable assignment, SELECT is not. SET can only assign one variable at a time, SELECT can make multiple assignments at once. If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one) When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value) As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does give it a slight speed advantage over SET.
Consider an enterprise wide system that you will be designing. The system’s purpose is file sharing, database‐dependent application delivery, OLTP and web application delivery. There will be 4 servers for each of these applications. If you were provided with a strict requirement for two‐tier architecture but had to accommodate over 5000 users what technologies and innovative methods would you use to facilitate the operation of such a system. (Note that twotier architecture has scalability issues in terms of number of users)
What happen when you enable grid option avilable at session level ? (Ans found: Scalabily . A single session Parallelization) But how can one session is sharable among different nodes at the same time while running ?
Define Stability, Scalability and reliability with example ?
what is escalation?how it is done?
What is live lock, deadlock and what is Lock escalation?
What is the meaning of lock escalation and why/how to stop this?
Within the interview process you may be required to perform a role-play. A popular example of this is being asked to role-play an escalated call with an unhappy customer.
Name the scalar data type and complex data types in Pig?
Explain about the scalar datatypes in Apache Pig?
How To Convert A Normal Vg To Big & Scalable Vg And Also Big To Scalable Vg?
What Is The Difference Between Scalability And Elasticity?
