Linux Kuriosity

1. What are the basic terminologies in kubernetes ? Ans: a. container: runtime image of an image b. nodes: physical or virtual machines in a cluster c. pods: simple deployable unit in a kubernetes system, which runs containers and deployed inside nodes. d. cluster: collection of nodes acting as a single unit. e. master: node that manages worker nodes. f. workers: nodes that provide the place to run pods. 2. In kubernetes, how to maintain replicas and maintain the desired state at any point in time ? Ans: Deployment internally uses replicaset to maintain replicas and maintain the desired state at any point in time. 3. How to run one pod per node ? Ans: Daemonsets are used to run one pod per node. 4. How to run stateful applications ? Ans: Statefulsets are used to run stateful applications. 5. What is the use of ingress ? Ans: Ingress in kubernetes can be used as a wrapper for services. Click on below link for Devops Interview QA ...

1. What is backlog ? Ans: A backlog is a list of the outstanding user stories, bugs and features for a product or sprint. 2. What is Burndown chart ? Ans: A burndown chart shows the actual and estimated amount of work to be done in a sprint. The horizontal x-axis in a burndown chart indicates time and vertical y-axis indicates cards. 3. What is control chart ? Ans: A control chart can show the cycle time or lead time of your product, version or sprint. The horizontal x-axis in a control chart indicates time and the vertical y-axis indicates the number of days issues have spent in those statuses. 4. What is cumulative flow diagram ? Ans: A cumulative flow diagram is an area chart that shows the various statuses of work items for a particular time interval. 5. What is cycle time ? Ans: cycle time is the time spent working on an issue. Click on below link for Devops Interview QA book: https://amzn.to/2YsiZah 6. What is epic ? Ans: ...

1. What is Static code Analysis ? Ans: Static code analysis is a method of automating the debug process of source code before the program is executed. 2. What are the four steps in software development methodologies ? Ans: a. Plan b. Build c. Test d. Field 3. What are the four traditional stages of the code review cycle ? Ans: a. Establish goals b. Run the static analysis tool c. review the code d. bug fixing 4. What is fortify SCA ? Ans: Fortify SCA is a static application security testing (SAST) tool. It is used by developers and security professionals. 5. What are the features of the fortify analyzer ? Ans: a. Translates source code to intermediate translated format. b. scans the translated format and generates reports on the vulnerabilities. c. audits the results of the scan. Click on below link for Devops Interview QA book: https://amzn.to/2YsiZah 6. What are the reasons for the success of the fortify ? ...

1. What are the phases of the Software development life cycle ? Ans: a. Requirement analysis b. Design c. Implementation (Development) d. Evolution e. Testing 2. What is coupling ? Ans: It refers to the degree of module dependency on the other module. 3. What are the storage of the artifacts ? Ans: a. Source control systems like version control system and subversion. b. File system c. Binary repository manager 4. What are the key features of the repository managers ? Ans: a. Dependency management b. Effective builds c. Release stability d. Control and audit 5. What are binaries ? Ans: The end products of the software development phase are the artifacts also called binaries. Click on below link for Devops Interview QA book: https://amzn.to/2YsiZah 6. Where is AQL executed ? Ans; AQL is executed in artifactory API. It is runs on remote repositories , local repositories and virtual repositories. 7. On...

1. What is Java 8 ? Ans: It is a major feature release of Java Programming Language. 2. What are the new features of the Java 8 ? Ans: a. Lambda expression b. Method references c. Default method d. Stream API e. Date Time API f. Nashorn , Javascript Engine 3. What is Lambda expression ? Ans: Adds functional processing capability to java 4. What is the use of the method references ? Ans: Referencing functions by their names instead of invoking them directly 5. What is default method ? Ans: Interface to have default method implementation. Click on below link for Devops Interview QA book: https://amzn.to/2YsiZah 6. What is jdeps ? Ans: It is a compiler tools which are used to figure out dependencies. 7. What is the use of the stream API ? Ans: It is used to facilitate pipeline processing. 8. What is date time API ? Ans: Improved date time API 9. What is Nashorn Javascript Engine ? Ans: A java-bas...

1. Mysql is developed.marketed and supported by ______________ a. Mysql AB b. Mysql BC c. Mysql DC d. none Ans: a It is a swedish company. 2. A ____________ is a separate application that stores a collection of data. a. database b. metabase c. deltabase d.none Ans: a 3.A ________________ is a software that enables you to implement a database with tables, columns and indexes. a. RDBMS ( Relational database management system) b. DBMS c. CDMS d.none Ans: a 4. A _____________ is a matrix with data. a. table b. cable c. network d.none Ans: a 5. A ___________ is a group of related data. a. row b. function c. data d.none Ans: a 6. A _________ key value cannot occur twice in one table. a. primary b. secondary c. teritary d.none Ans: a 7. A _________ is the linking pin between two tables a. Foriegn b. primary c. secondary d.none Ans: a 8. A _________key is a ke...

1. What is codeigniter ? Ans: Codeigniter is a powerful PHP framework with a very small footprint, built for developers who need a simple and elegant toolkit to create full-featured web applications. It can be used to develop websites, using php. 2. Who created codeigniter ? Ans: EllisLab 3. CodeIgniter is based on the __________________ development pattern. Ans: Model view controller 4. What is MVC ? Ans: MVC is a software approach that separates application logic from presentation. 5. What is controller ? Ans: A controller is a simple class file.It controls the whole application by URI. 6. What are model classes ? Ans: Models classes are designed to work with information in the database. 7. What are the two ways of connecting to database ? Ans: There are two ways of connecting to database : 1. Automatic connecting 2. Manual connecting 8. How to insert a record in the database ? Ans: Using insert fu...

1. Introduction a. A cluster is two or more computers (called nodes or members) that work together to perform a task. Interview QA : Suppose you are going for a interview and interviewer ask you what is cluster ? At this point of time above definition will help you. 2. Pacemaker a. It is a cluster resource manager and achieve maximum availability for your cluster services. b. Four basic components of the pacemaker architecture components are as follows: 1. Cluster Information Base: uses XML internally to distribute and synchronize current configuration and status information from the designated coordinator. 2. Cluster Resource Management Daemon (CRMd): Each cluster node also includes a local resource manager daemon (LRMd) that acts as an interface between CRMd and resources. 3. STONITH: It is configured in CIB and can be monitored as a normal cluster resource. 4. Corosync: provides messaging capabilities for applications that coordinate or operat...