71. HDFS, by default, replicates each data block . . . . . . . . times on different nodes and on at least . . . . . . . . racks. A. 3, 2 B. 1, 2 C. 2, 3 D. All of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
72. Point out the wrong statement. A. Java code is used to deserialize the contents of the file into objects B. Avro allows you to use complex data structures within Hadoop MapReduce jobs C. The m2e plugin automatically downloads the newly added JAR files and their dependencies D. None of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
73. . . . . . . . . stores its metadata on multiple disks that typically include a non-local file server. A. DataNode B. NameNode C. ActionNode D. None of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
74. Point out the wrong statement. A. Apache Avro™ is a data serialization system B. Avro provides simple integration with dynamic languages C. Avro provides rich data structures D. All of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
75. The . . . . . . . . codec uses Google's Snappy compression library. A. null B. snappy C. deflate D. none of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
76. Which of the following supports splittable compression? A. LZO B. Bzip2 C. Gzip D. All of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
77. Gzip (short for GNU zip) generates compressed files that have a . . . . . . . . extension. A. .gzip B. .gz C. .gzp D. .g Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
78. The LZO compression format is composed of approximately . . . . . . . . blocks of compressed data. A. 128k B. 256k C. 24k D. 36k Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
79. Which of the following is the slowest compression technique? A. LZO B. Bzip2 C. Gzip D. All of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
80. Point out the correct statement. A. Avro provides functionality similar to systems such as Thrift B. When Avro is used in RPC, the client and server exchange data in the connection handshake C. Apache Avro, Avro, Apache, and the Avro and Apache logos are trademarks of The Java Foundation D. None of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
