MCQ IN COMPUTER SCIENCE & ENGINEERING

Previous
Next

COMPUTER SCIENCE AND ENGINEERING

CLOUD COMPUTING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ is the slave/worker node and holds the user data in the form of Data Blocks
A
DataNode
B
NameNode
C
Data block
D
Replication
Explanation: 

Detailed explanation-1: -DataNode is the slave/worker node and holds the user data in the form of Data Blocks. There can be any number of DataNodes in a Hadoop Cluster.

Detailed explanation-2: -NameNode and DataNodes HDFS exposes a file system namespace and allows user data to be stored in files. Internally, a file is split into one or more blocks and these blocks are stored in a set of DataNodes. The NameNode executes file system namespace operations like opening, closing, and renaming files and directories.

Detailed explanation-3: -Explanation: NameNode is aware of the files to which the blocks stored on it belong to. Get Free Certificate of Merit in Hadoop Now!

Detailed explanation-4: -The actual data is stored on DataNodes. 3. The DataNodes perform the low-level read and write requests from the file system’s clients.

Detailed explanation-5: -Namenode maps these blocks to DataNodes.

There is 1 question to complete.
Previous
Next