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2 years ago

In a linux script, the line ____ is important because it identifies the file as a script.

1 answer:

8 0

The closest line to that would be the first line:

#!/bin/bash

echo "Hello World!"

BTW, the "#!" is referred to as a she-bang. When those are the first characters executed, the (requires an absolute path) program that follows is launched, and the rest of this file is given to it as data. To run this like a program, the execute permissions need to be set ( chmod 0755 script.sh ).

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Bad Directions You are driving to your friend’s house and are using your smartphone for directions. While approaching your desti

Helen [10]

This could have happened when:

Lack of Internet service or failure
Wrong application.

<h3>What do you mean by Internet?</h3>

The Internet is seen as a form of a network that helps people to connects their computers all over the nation.

In this age, Through the help of the Internet, people are able to share information and navigate through places.

Note that the problem of bad direction could have happened when:

Lack of Internet service or failure
Wrong application.

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6 0

2 years ago

Protocols used in each layers in each osi reference model

natka813 [3]

The protocols that are often used in each layers in each OSI reference model are:

Layers Protocols

Layer 7- Application SMTP, HTTP, FTP, POP3, SNMP

Layer 6- Presentation MPEG, ASCH, SSL, TLS

Layer 5-Session NetBIOS, SAP

Layer 4-Transport TCP, UDP

Layer 3-Network IPV5, IPV6, ICMP, IPSEC, ARP, MPLS.

Layer 2-Data Link RAPA, PPP, Frame Relay, ATM, Fiber Cable.

Layer 1-Physical RS232, 100BaseTX, ISDN, 11.

<h3>What is OSI Model?</h3>

The OSI Model is known to be a kind of a logical and conceptual framework that tells all about network communication that is often used by systems in an open to interconnection and also in any communication with other forms of systems.

Note that the Open System Interconnection (OSI Model) is one that tells more about a logical network and it is one that also tells about computer packet transfer via the use of various layers of protocols.

Therefore, The protocols that are often used in each layers in each OSI reference model are:

Layers Protocols

Layer 7- Application SMTP, HTTP, FTP, POP3, SNMP

Layer 6- Presentation MPEG, ASCH, SSL, TLS

Layer 5-Session NetBIOS, SAP

Layer 4-Transport TCP, UDP

Layer 3-Network IPV5, IPV6, ICMP, IPSEC, ARP, MPLS.

Layer 2-Data Link RAPA, PPP, Frame Relay, ATM, Fiber Cable.

Layer 1-Physical RS232, 100BaseTX, ISDN, 11.

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8 0

1 year ago

A non technical kind of cyber intrusion that relies heavily on human interaction and often involve tricking people into breaking

lana66690 [7]

Social Engineering.

---------------------------

4 0

3 years ago

Assume inputFile is a Scanner object used to read data from a text file that contains a number of lines. Each line contains an a

anzhelika [568]

Answer:

words.hasNext()

Explanation:

Given the code snippet below:

while (inputFile.hasNextLine()) {
String word = "";
String line = inputFile.nextLine();
Scanner words = new Scanner(line);
while (words.hasNext()) {
word = words.next();
}
System.out.println(word); }
}

We have a inputFile Scanner object that can read data from a text file and we presume the inputFile has read several rows of data from the text file. So long as there is another line of input data available, the outer while loop will keep running. In each outer loop, one line of data will be read and assign to line variable (Line 3). Next, there is another Scanner object, words, which will take the current line of data as input. To get the last word of that line, we can use hasNext() method. This method will always return true if there is another tokens in its input. So the inner while loop will keep running so long as there is a token in current line of data and assign the current token to word variable. The word will hold the last token of current line of data upon exit from the inner loop. Then we can print the output (Line 8) which is the last word of the current line of data.

7 0

3 years ago

Design a TestScores class that has fields to hold three test scores. The class should have a constructor, accessor and mutator m

sweet-ann [11.9K]

Answer:

Answered below

Explanation:

class TestScores {

double test1;

double test2;

double test 3;

public TestScores (double test1, double test2, double teat3){

this.test1= test1;

this.test2 = test2;

this.test3 = teat3;}

//mutator

public setTest1(double test1){

this.test1 = test1;

}

//accessor

public double getTest1(){

return test 1;

}

//Write same accessors and mutators for test2 and test3

public double getTestAverage(){

double sum = test1+test2+test3;

return sum / 3;

}

class TestRun{

public static void main (String [] args){

TestScores scores = new TestScores(50.5, 40.0, 80.7)

int average = scores.getTestAverage();

System.out.print(average);

}

6 0

2 years ago