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[May 14, 2022] Latest Cloudera CCA175 Exam Practice Test To Gain Brilliante Result [Q48-Q68]




Latest [May 14, 2022] Cloudera CCA175 Exam Practice Test To Gain Brilliante Result

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NEW QUESTION 48
CORRECT TEXT
Problem Scenario 57 : You have been given below code snippet.
val a = sc.parallelize(1 to 9, 3) operationl
Write a correct code snippet for operationl which will produce desired output, shown below.
Array[(String, Seq[lnt])] = Array((even,ArrayBuffer(2, 4, G, 8)), (odd,ArrayBuffer(1, 3, 5, 7,
9)))

NEW QUESTION 49
CORRECT TEXT
Problem Scenario 39 : You have been given two files
spark16/file1.txt
1,9,5
2,7,4
3,8,3
spark16/file2.txt
1 ,g,h
2 ,i,j
3 ,k,l
Load these two tiles as Spark RDD and join them to produce the below results
(l,((9,5),(g,h)))
(2, ((7,4), (i,j))) (3, ((8,3), (k,l)))
And write code snippet which will sum the second columns of above joined results (5+4+3).

NEW QUESTION 50
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Problem Scenario 85 : In Continuation of previous question, please accomplish following activities.
1. Select all the columns from product table with output header as below. productID AS ID code AS Code name AS Description price AS ‘Unit Price’
2. Select code and name both separated by ‘ -‘ and header name should be Product
Description’.
3. Select all distinct prices.
4 . Select distinct price and name combination.
5 . Select all price data sorted by both code and productID combination.
6 . count number of products.
7 . Count number of products for each code.

NEW QUESTION 51
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Problem Scenario 61 : You have been given below code snippet.
val a = sc.parallelize(List(“dog”, “salmon”, “salmon”, “rat”, “elephant”), 3) val b = a.keyBy(_.length) val c = sc.parallelize(List(“dog”,”cat”,”gnu”,”salmon”,”rabbit”,”turkey”,”wolf”,”bear”,”bee”), 3) val d = c.keyBy(_.length) operationl
Write a correct code snippet for operationl which will produce desired output, shown below.
Array[(lnt, (String, Option[String]}}] = Array((6,(salmon,Some(salmon))),
(6,(salmon,Some(rabbit))),
(6,(salmon,Some(turkey))), (6,(salmon,Some(salmon))), (6,(salmon,Some(rabbit))),
(6,(salmon,Some(turkey))), (3,(dog,Some(dog))), (3,(dog,Some(cat))),
(3,(dog,Some(dog))), (3,(dog,Some(bee))), (3,(rat,Some(dogg)), (3,(rat,Some(cat)j),
(3,(rat.Some(gnu))). (3,(rat,Some(bee))), (8,(elephant,None)))

NEW QUESTION 52
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Problem Scenario 86 : In Continuation of previous question, please accomplish following activities.
1 . Select Maximum, minimum, average , Standard Deviation, and total quantity.
2 . Select minimum and maximum price for each product code.
3. Select Maximum, minimum, average , Standard Deviation, and total quantity for each product code, hwoever make sure Average and Standard deviation will have maximum two decimal values.
4. Select all the product code and average price only where product count is more than or equal to 3.
5. Select maximum, minimum , average and total of all the products for each code. Also produce the same across all the products.

NEW QUESTION 53
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Problem Scenario 12 : You have been given following mysql database details as well as other info.
user=retail_dba
password=cloudera
database=retail_db
jdbc URL = jdbc:mysql://quickstart:3306/retail_db
Please accomplish following.
1. Create a table in retailedb with following definition.
CREATE table departments_new (department_id int(11), department_name varchar(45), created_date T1MESTAMP DEFAULT NOW());
2 . Now isert records from departments table to departments_new
3 . Now import data from departments_new table to hdfs.
4 . Insert following 5 records in departmentsnew table. Insert into departments_new values(110, “Civil” , null); Insert into departments_new values(111, “Mechanical” , null);
Insert into departments_new values(112, “Automobile” , null); Insert into departments_new values(113, “Pharma” , null);
Insert into departments_new values(114, “Social Engineering” , null);
5. Now do the incremental import based on created_date column.

NEW QUESTION 54
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Problem Scenario 23 : You have been given log generating service as below.
Start_logs (It will generate continuous logs)
Tail_logs (You can check , what logs are being generated)
Stop_logs (It will stop the log service)
Path where logs are generated using above service : /opt/gen_logs/logs/access.log
Now write a flume configuration file named flume3.conf , using that configuration file dumps logs in HDFS file system in a directory called flumeflume3/%Y/%m/%d/%H/%M
Means every minute new directory should be created). Please us the interceptors to provide timestamp information, if message header does not have header info.
And also note that you have to preserve existing timestamp, if message contains it. Flume channel should have following property as well. After every 100 message it should be committed, use non-durable/faster channel and it should be able to hold maximum 1000 events.

NEW QUESTION 55
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Problem Scenario 31 : You have given following two files
1 . Content.txt: Contain a huge text file containing space separated words.
2 . Remove.txt: Ignore/filter all the words given in this file (Comma Separated).
Write a Spark program which reads the Content.txt file and load as an RDD, remove all the words from a broadcast variables (which is loaded as an RDD of words from Remove.txt).
And count the occurrence of the each word and save it as a text file in HDFS.
Content.txt
Hello this is ABCTech.com
This is TechABY.com
Apache Spark Training
This is Spark Learning Session
Spark is faster than MapReduce
Remove.txt
Hello, is, this, the

NEW QUESTION 56
CORRECT TEXT
Problem Scenario 17 : You have been given following mysql database details as well as other info.
user=retail_dba
password=cloudera
database=retail_db
jdbc URL = jdbc:mysql://quickstart:3306/retail_db
Please accomplish below assignment.
1. Create a table in hive as below, create table departments_hiveOl(department_id int, department_name string, avg_salary int);
2. Create another table in mysql using below statement CREATE TABLE IF NOT EXISTS departments_hive01(id int, department_name varchar(45), avg_salary int);
3. Copy all the data from departments table to departments_hive01 using insert into departments_hive01 select a.*, null from departments a;
Also insert following records as below
insert into departments_hive01 values(777, “Not known”,1000);
insert into departments_hive01 values(8888, null,1000);
insert into departments_hive01 values(666, null,1100);
4. Now import data from mysql table departments_hive01 to this hive table. Please make sure that data should be visible using below hive command. Also, while importing if null value found for department_name column replace it with “” (empty string) and for id column with -999 select * from departments_hive;

NEW QUESTION 57
CORRECT TEXT
Problem Scenario 4: You have been given MySQL DB with following details.
user=retail_dba
password=cloudera
database=retail_db
table=retail_db.categories
jdbc URL = jdbc:mysql://quickstart:3306/retail_db
Please accomplish following activities.
Import Single table categories (Subset data} to hive managed table , where category_id between 1 and 22

NEW QUESTION 58
CORRECT TEXT
Problem Scenario 62 : You have been given below code snippet.
val a = sc.parallelize(List(“dogM, “tiger”, “lion”, “cat”, “panther”, “eagle”), 2) val b = a.map(x => (x.length, x)) operation1
Write a correct code snippet for operationl which will produce desired output, shown below.
Array[(lnt, String)] = Array((3,xdogx), (5,xtigerx), (4,xlionx), (3,xcatx), (7,xpantherx),
(5,xeaglex))

NEW QUESTION 59
CORRECT TEXT
Problem Scenario 58 : You have been given below code snippet.
val a = sc.parallelize(List(“dog”, “tiger”, “lion”, “cat”, “spider”, “eagle”), 2) val b = a.keyBy(_.length) operation1
Write a correct code snippet for operationl which will produce desired output, shown below.
Array[(lnt, Seq[String])] = Array((4,ArrayBuffer(lion)), (6,ArrayBuffer(spider)),
(3,ArrayBuffer(dog, cat)), (5,ArrayBuffer(tiger, eagle}}}

NEW QUESTION 60
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Problem Scenario 68 : You have given a file as below.
spark75/f ile1.txt
File contain some text. As given Below
spark75/file1.txt
Apache Hadoop is an open-source software framework written in Java for distributed storage and distributed processing of very large data sets on computer clusters built from commodity hardware. All the modules in Hadoop are designed with a fundamental assumption that hardware failures are common and should be automatically handled by the framework
The core of Apache Hadoop consists of a storage part known as Hadoop Distributed File
System (HDFS) and a processing part called MapReduce. Hadoop splits files into large blocks and distributes them across nodes in a cluster. To process data, Hadoop transfers packaged code for nodes to process in parallel based on the data that needs to be processed.
his approach takes advantage of data locality nodes manipulating the data they have access to to allow the dataset to be processed faster and more efficiently than it would be in a more conventional supercomputer architecture that relies on a parallel file system where computation and data are distributed via high-speed networking
For a slightly more complicated task, lets look into splitting up sentences from our documents into word bigrams. A bigram is pair of successive tokens in some sequence.
We will look at building bigrams from the sequences of words in each sentence, and then try to find the most frequently occuring ones.
The first problem is that values in each partition of our initial RDD describe lines from the file rather than sentences. Sentences may be split over multiple lines. The glom() RDD method is used to create a single entry for each document containing the list of all lines, we can then join the lines up, then resplit them into sentences using “.” as the separator, using flatMap so that every object in our RDD is now a sentence.
A bigram is pair of successive tokens in some sequence. Please build bigrams from the sequences of words in each sentence, and then try to find the most frequently occuring ones.

NEW QUESTION 61
CORRECT TEXT
Problem Scenario 47 : You have been given below code snippet, with intermediate output.
val z = sc.parallelize(List(1,2,3,4,5,6), 2)
// lets first print out the contents of the RDD with partition labels
def myfunc(index: Int, iter: lterator[(lnt)]): lterator[String] = {
iter.toList.map(x => “[partID:” + index + “, val: ” + x + “]”).iterator
}
//In each run , output could be different, while solving problem assume belowm output only.
z.mapPartitionsWithlndex(myfunc).collect
res28: Array[String] = Array([partlD:0, val: 1], [partlD:0, val: 2], [partlD:0, val: 3], [partlD:1, val: 4], [partlD:1, val: S], [partlD:1, val: 6])
Now apply aggregate method on RDD z , with two reduce function , first will select max value in each partition and second will add all the maximum values from all partitions.
Initialize the aggregate with value 5. hence expected output will be 16.

NEW QUESTION 62
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Problem Scenario 15 : You have been given following mysql database details as well as other info.
user=retail_dba
password=cloudera
database=retail_db
jdbc URL = jdbc:mysql://quickstart:3306/retail_db
Please accomplish following activities.
1. In mysql departments table please insert following record. Insert into departments values(9999, ‘”Data Science”1);
2. Now there is a downstream system which will process dumps of this file. However, system is designed the way that it can process only files if fields are enlcosed in(‘) single quote and separate of the field should be (-} and line needs to be terminated by : (colon).
3. If data itself contains the ” (double quote } than it should be escaped by .
4. Please import the departments table in a directory called departments_enclosedby and file should be able to process by downstream system.

NEW QUESTION 63
CORRECT TEXT
Problem Scenario 82 : You have been given table in Hive with following structure (Which you have created in previous exercise).
productid int code string name string quantity int price float
Using SparkSQL accomplish following activities.
1 . Select all the products name and quantity having quantity <= 2000
2 . Select name and price of the product having code as ‘PEN’
3 . Select all the products, which name starts with PENCIL
4 . Select all products which “name” begins with ‘P followed by any two characters, followed by space, followed by zero or more characters

NEW QUESTION 64
CORRECT TEXT
Problem Scenario 74 : You have been given MySQL DB with following details.
user=retail_dba
password=cloudera
database=retail_db
table=retail_db.orders
table=retail_db.order_items
jdbc URL = jdbc:mysql://quickstart:3306/retail_db
Columns of order table : (orderjd , order_date , ordercustomerid, order status}
Columns of orderjtems table : (order_item_td , order_item_order_id ,
order_item_product_id,
order_item_quantity,order_item_subtotal,order_item_product_price)
Please accomplish following activities.
1. Copy “retaildb.orders” and “retaildb.orderjtems” table to hdfs in respective directory p89_orders and p89_order_items .
2. Join these data using orderjd in Spark and Python
3. Now fetch selected columns from joined data Orderld, Order date and amount collected on this order.
4. Calculate total order placed for each date, and produced the output sorted by date.

NEW QUESTION 65
CORRECT TEXT
Problem Scenario 2 :
There is a parent organization called “ABC Group Inc”, which has two child companies named Tech Inc and MPTech.
Both companies employee information is given in two separate text file as below. Please do the following activity for employee details.
Tech Inc.txt
1,Alok,Hyderabad
2,Krish,Hongkong
3,Jyoti,Mumbai
4 ,Atul,Banglore
5 ,Ishan,Gurgaon
MPTech.txt
6 ,John,Newyork
7 ,alp2004,California
8 ,tellme,Mumbai
9 ,Gagan21,Pune
1 0,Mukesh,Chennai
1 . Which command will you use to check all the available command line options on HDFS and How will you get the Help for individual command.
2. Create a new Empty Directory named Employee using Command line. And also create an empty file named in it Techinc.txt
3. Load both companies Employee data in Employee directory (How to override existing file in HDFS).
4. Merge both the Employees data in a Single tile called MergedEmployee.txt, merged tiles should have new line character at the end of each file content.
5. Upload merged file on HDFS and change the file permission on HDFS merged file, so that owner and group member can read and write, other user can read the file.
6. Write a command to export the individual file as well as entire directory from HDFS to local file System.

NEW QUESTION 66
CORRECT TEXT
Problem Scenario 35 : You have been given a file named spark7/EmployeeName.csv
(id,name).
EmployeeName.csv
E01,Lokesh
E02,Bhupesh
E03,Amit
E04,Ratan
E05,Dinesh
E06,Pavan
E07,Tejas
E08,Sheela
E09,Kumar
E10,Venkat
1. Load this file from hdfs and sort it by name and save it back as (id,name) in results directory. However, make sure while saving it should be able to write In a single file.

NEW QUESTION 67
CORRECT TEXT
Problem Scenario 38 : You have been given an RDD as below,
val rdd: RDD[Array[Byte]]
Now you have to save this RDD as a SequenceFile. And below is the code snippet.
import org.apache.hadoop.io.compress.GzipCodec
rdd.map(bytesArray => (A.get(), new
B(bytesArray))).saveAsSequenceFile(‘7output/path”,classOt[GzipCodec])
What would be the correct replacement for A and B in above snippet.

NEW QUESTION 68
CORRECT TEXT
Problem Scenario 16 : You have been given following mysql database details as well as other info.
user=retail_dba
password=cloudera
database=retail_db
jdbc URL = jdbc:mysql://quickstart:3306/retail_db
Please accomplish below assignment.
1. Create a table in hive as below.
create table departments_hive(department_id int, department_name string);
2. Now import data from mysql table departments to this hive table. Please make sure that data should be visible using below hive command, select” from departments_hive


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Post date: 2022-05-14 14:35:38
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