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In symmetric encryption the same key is used to encrypt and decrypt a message. in asymmetric encryption different keys are used

Brrunno [24]

A useful advantage of Asymmetric encryption over symmetric encryption is that there is no secret channel necessary for the exchange of the public key, unlike in the symmetric encryption which requires a secret channel to send the secret key.

Another advantage of Asymmetric encryption is that is has increased security. Asymmetric uses two different keys (Public and private) for both encryption and decryption of data while symmetric uses one.

5 0

3 years ago

Read 2 more answers

Modify the WordCount program so it outputs the wordcount for each distinct word in each file. So the output of this DocWordCount

stepladder [879]

Answer and Explanation:

package PackageDemo;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.fs.Path;

import org.apache.hadoop.io.IntWritable;

import org.apache.hadoop.io.LongWritable;

import org.apache.hadoop.io.Text;

import org.apache.hadoop.mapreduce.Job;

import org.apache.hadoop.mapreduce.Mapper;

import org.apache.hadoop.mapreduce.Reducer;

import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;

import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

import org.apache.hadoop.util.GenericOptionsParser;

public class WordCount {

public static void main(String [] args) throws Exception

{

Configuration c=new Configuration();

String[] files=new GenericOptionsParser(c,args).getRemainingArgs();

Path input=new Path(files[0]);

Path output=new Path(files[1]);

Job j=new Job(c,"wordcount");

j.setJarByClass(WordCount.class);

j.setMapperClass(MapForWordCount.class);

j.setReducerClass(ReduceForWordCount.class);

j.setOutputKeyClass(Text.class);

j.setOutputValueClass(IntWritable.class);

FileInputFormat.addInputPath(j, input);

FileOutputFormat.setOutputPath(j, output);

System.exit(j.waitForCompletion(true)?0:1);

}

public static class MapForWordCount extends Mapper<LongWritable, Text, Text, IntWritable>{

public void map(LongWritable key, Text value, Context con) throws IOException, InterruptedException

{

String line = value.toString();

String[] words=line.split(",");

for(String word: words )

{

Text outputKey = new Text(word.toUpperCase().trim());

IntWritable outputValue = new IntWritable(1);

con.write(outputKey, outputValue);

}

public static class ReduceForWordCount extends Reducer<Text, IntWritable, Text, IntWritable>

{

public void reduce(Text word, Iterable<IntWritable> values, Context con) throws IOException, InterruptedException

{

int sum = 0;

for(IntWritable value : values)

{

sum += value.get();

}

con.write(word, new IntWritable(sum));

}

8 0

3 years ago

mta software development fundamentals You are creating an application that accepts input and displays a response to the user. Yo

Harlamova29_29 [7]

Answer: Console-Based

Explanation:

A console based application is an application that helps in facilitating the reading and the writing of the characters from a console.

It is vital in the provision of a simple user interface for the applications that requires little interaction. Since the application accepts input and displays a response to the user and cannot create a graphical interface for this application, then it's a console based application.

8 0

2 years ago

What could cause this? An App Builder wants to show Groups as the last navigation menu item in the Salesforce1 Mobile App. Howev

sasho [114]

Answer:

Option B is the correct option.

Explanation:

In the above scenario, When they wanted to demonstrate Groups as the last menu item for navigation in the Mobile App. Then, they can't select Groups as among the elements in the drop-down menu though.

So, the following scenario causes that the Groups are not contained in the selected list for the navigation menu.

4 0

3 years ago

What hull type is best for use on ponds small lakes and calm rivers?

Vika [28.1K]

There are different types of hull, the hull type that is best for use on ponds, small lakes and calm rivers is the FLAT BOTTOM HULL. This is the type usually find in fishing boat, it has a flat spanning and a shallow draft which is very stable in calm weather.

5 0

3 years ago