I have listed 10 top Quiz questions on UNIX disk space. These questions help you to understand about disk-related concepts quickly. Unix Disk Space QUIZ Questions. Below listed 10 quiz questions help you to know the disk-space related concepts. 1. All devices are considered as files in Unix. Yes 2. All device files are stored in /etc or in its subdirectories. No 3. CD-ROM is a character device. No 4. The printer is a character device. Yes 5. The minor number represents the type of device. No 6. The dd command is used for copying data from one medium to another. Yes 7. The term bs in the dd command stands for block size. Yes 8. The du utility displays complete information about the usage of disk space by each file and directory. Yes 9. By default, the du command displays information in terms of 1024-byte blocks. No 10. The df command reports only the free disk space of the file system installed on our machines. Yes Keep Reading Top vi Editor Commands for Ubuntu

I hope you enjoyed my previous post. This is second set of Questions exclusively for Big data engineers. Read QUIZ-1 . Q.1) You have submitted a job on an input file which has 400 input splits in HDFS. How many map tasks will run? A. At most 400. B. At least 400 C. Between 400 and 1200. D. Between 100 and 400. Ans: c QUESTION 2 What is not true about LocalJobRunner mode? Choose two A. It requires JobTracker up and running. B. It runs Mapper and Reducer in one single process C. It stores output in local file system D. It allows use of Distributed Cache. Ans: d,a Hadoop Jobs and Career QUESTION 3 What is the command you will use to run a driver named “SalesAnalyisis” whose compilped code is available in a jar file “SalesAnalytics.jar” with input data in directory “/sales/data” and output in a directory “/sales/analytics”? A. hadoopfs  –jar  SalesAnalytics.jar  SalesAnalysis  -input  /sales/data  -output /sales/analysis B. hadoo...

Scala is an acronym for “Scalable Language” . This means that Scala grows with you. You can play with it by typing one-line expressions and observing the results. But you can also rely on it for large mission-critical systems , as many companies, including Twitter, LinkedIn, or Intel does. To some, Scala feels like a scripting language. Its syntax is a concise and low ceremony; its types get out of the way because the compiler can infer them. There are a REPL and IDE worksheets for quick feedback. Developers like it so much that Scala won the ScriptBowl contest at the 2012 JavaOne conference. At the same time, Scala is the preferred workhorse language for many mission-critical server systems. The generated code is on a par with Java’s and its precise typing means that many problems are caught at compile-time rather than after deployment. ✅ SCALA Quiz Link At the root, the language’s scalability is the result of a careful integration of object-oriented and functional language concepts...