Answer: This means that even though we believe the information is coming from a trusted source, it could still contract a virus due to someone else hacking it or the original sending not being aware of the virus.
Explanation: Just because information comes from a trusted/friendly source does not mean the information is clear of potential threats. Viruses are able to hide in information and the sending may not be aware that the virus is hiding in the information.
Answer:
He is a Professorial Fellow of Computer Science at the University of Oxford and a professor at the Massachusetts Institute of Technology.
Answer:
#!/bin/bash
if [ -z "$1" ] || [ -z "$2" ]
then
echo "invalid arguments"
exit 1
fi
filename="$1"
extension="$2"
cnt=1
for file in *. $extension
do
echo "renaming $file to $filename $cnt.$extension"
mv -i "$file" "$filename$cnt. $extension" #prompt before overwriting a file
cnt=$(( $cnt + 1 ))
done
Explanation:
Answer:
See Explaination
Explanation:
package testscores;
import java.util.ArrayList;
import java.util.List;
public class TestScores {
public List<Integer> scorearray=new ArrayList<>();
public TestScores(List<Integer> scores) throws InvalidTestScore{
this.scorearray=scores;
for(int i=0;i<scorearray.size();i++){
if(scorearray.get(i)>100 || scorearray.get(i)<0){
throw new InvalidTestScore(this.scorearray.get(i));
}
}
}
public double average(){
int tot=0;
for(int i=0;i<this.scorearray.size();i++){
tot=tot+this.scorearray.get(i);
}
return tot*(1.0)/(this.scorearray.size());
}
class InvalidTestScore extends Exception
{
private double amount;
public InvalidTestScore(int Score)
{
System.out.println("Invalid Score "+Score);
}
}
}
Answer:
False
Explanation:
The Vigenere cipher is an encryption method that uses a series of interwoven Ceaser ciphers and a keyword to encrypt text. The difference between this cipher and the Ceaser cipher is the tabular interwoven Ceaser cipher and the keyword.
Multiple keywords can be used in the Vigenere cipher. The use of this keyword makes the brute-force decipher algorithm unreliable for decoding text encrypted with it.
