Free UGC NET Paper 2 CS Mock Test 10 – Data Warehousing, Mining & Big Data (Unit 4)

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Q1. Consider the following statements:
A. Data transformation is involved in the Data mining process.
B. Online database is used in Data warehouse.
C. Classification is a measure of accuracy.
D. K-means clustering algorithm is based on the concept of minimizing the within-cluster variance.
E. Pattern evaluation is a process to identify knowledge based on interestingness measure.
Choose the correct answer from the options given below:

AB, C, E Only BA, D, E Only CA, C, E Only DA, C, D Only

Q2. Which of the following tables contains the primary information in a data warehouse?

ADimension table BFact table CLookup table DPrimary table

Q3. Match List I with List II

List I	List II
A. Hadoop Distributed File System	I. Trust
B. Veracity	II. Facebook
C. Apache Pig	III. Name-Node
D. Apache Hive	IV. Yahoo

AA-IV, B-III, C-I, D-II BA-III, B-I, C-II, D-IV CA-III, B-I, C-IV, D-II DA-II, B-III, C-I, D-IV

Q4. Match List I with List II.
Choose the correct answer from the options given below:

List I	List II
a. Apache Kafka	I. Platform for constructing data flows for extract, transform and load (ETL) processing and analysis of large datasets
b. Pig	II. General-purpose computing model and runtime system for distributed data analytics
c. Apache Mahout	III. Open-source platform that was created by LinkedIn
d. MapReduce	IV. Open-source platform used for creating scalable machine learning algorithms

Aa-II, b-IV, c-I, d-III Ba-II, b-I, c-IV, d-III Ca-III, b-I, c-IV, d-II Da-I, b-II, c-IV, d-III

Q5. Select the correct order of the DBSCAN algorithm.
I. Recursively find all density-connected points and assign them to the same cluster as the core point.
II. Find all neighbour points within eps and identify the core points with more than MinPts neighbours.
III. Iterate through the remaining unvisited points in the dataset.
IV. For each core point, if it is not already assigned to a cluster, create a new cluster.

AII, IV, III, I BIV, II, III, I CII, IV, I, III DIV, II, I, III

Q6. In reference to Big Data, consider the following databases:
(A) Memcached
(B) CouchDB
(C) InfiniteGraph
Choose the most appropriate answer from the options given below:

A(A) and (B) only B(B) and (C) only C(C) and (A) only D(A), (B) and (C)

Q7. Consider the following statements about UNIX file permissions:
(A) UNIX provides three permission types — Read, Write and Execute.
(B) UNIX provides three permission sets — Owner, Group and Others.
Which of the above statement(s) is/are true?

AOnly (A) BOnly (B) CBoth (A) and (B) DNeither (A) nor (B)

Q8.

Match List I and List II

Aa-II, b-IV, c-I, d-III Ba-II, b-I, c-IV, d-III Ca-III, b-I, c-IV, d-II Da-I, b-II, c-IV, d-III Q

Q9.

In reference to big data, consider the following databases: (A) Memcached (B) CouchDB (C) InfiniteGraph.

A(A) and (B) only B(B) and (C) only C(C) and (A) only D(A), (B) and (C)

Q10.

The data node and name node in HADOOP are

ABoth Worker Nodes BBoth Master Nodes CWorker Node and Master Node respectively DMaster Node and Worker Node respectively

Q11.

Hadoop (a big data tool) works with number of related tools. Choose from the following, the common tools included into Hadoop :

AMySQL, Google API and Map reduce BMap reduce, Scala and Hummer CMap reduce, H Base and Hive DMap reduce, Hummer and Heron

Q12.

Data warehouse contains _____ data that is never found in the operational environment.

ASummary BEncoded CEncrypted DScripted

Q13.

Which of the following statements is/are true?

(i) Facebook has the world's largest Hadoop cluster.

(ii) Hadoop 2.0 allows live stream processing of real-time data.

A(i) only B(ii) only CBoth (i) and (ii) DNeither (i) nor (ii)

Next: Mock 11 – Mixed Practice →

Mock 10 – Data Warehousing, Mining & Big Data