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lana [24]
3 years ago
12

A security administrator wants to empty the DNS cache after a suspected attack that may have corrupted the DNS server. The serve

r has been repaired, however it is feared that DNS entries may remain in client computer caches. Which of the following tools can be used to flush the DNS cache on a Windows client?
a. NET
b. PING
c. NSLOOKUP
d. IPCONFIG
Computers and Technology
1 answer:
mario62 [17]3 years ago
3 0

Answer: (D) IPCONFIG

Explanation:

The IPCONFIG is the type of tool that can be use to flush or refresh the dynamic host configuration (DNS) cache on the window client. The IPCONFIG display various types of parameters such as subnet mask, IP address and the default gateway.

 In the computing, the IPCONFIG is stand for the internet protocol configuration and it is one of the operating system applications which basically display all Transmission control protocol/ Internet protocol (TCP/IP) network configurations.

Therefore,Option (D) is correct.

 

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Write a telephone lookup program. Read a data set of 1,000 names and telephone numbers from a file that contains the numbers in
morpeh [17]

Answer:

See explaination

Explanation:

PhoneLookup.java

import java.io.FileReader;

import java.io.IOException;

import java.util.Scanner;

public class PhoneLookup

{

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

{

Scanner in = new Scanner(System.in);

System.out.println("Enter the name of the phonebook file: ");

String fileName = in.nextLine();

LookupTable table = new LookupTable();

FileReader reader = new FileReader(fileName);

table.read(new Scanner(reader));

boolean more = true;

while (more)

{

System.out.println("Lookup N)ame, P)hone number, Q)uit?");

String cmd = in.nextLine();

if (cmd.equalsIgnoreCase("Q"))

more = false;

else if (cmd.equalsIgnoreCase("N"))

{

System.out.println("Enter name:");

String n = in.nextLine();

System.out.println("Phone number: " + table.lookup(n));

}

else if (cmd.equalsIgnoreCase("P"))

{

System.out.println("Enter phone number:");

String n = in.nextLine();

System.out.println("Name: " + table.reverseLookup(n));

}

}

}

}

LookupTable.java

import java.util.ArrayList;

import java.util.Collections;

import java.util.Scanner;

/**

A table for lookups and reverse lookups

*/

public class LookupTable

{

private ArrayList<Item> people;

/**

Constructs a LookupTable object.

*/

public LookupTable()

{

people = new ArrayList<Item>();

}

/**

Reads key/value pairs.

atparam in the scanner for reading the input

*/

public void read(Scanner in)

{

while(in.hasNext()){

String name = in.nextLine();

String number = in.nextLine();

people.add(new Item(name, number));

}

}

/**

Looks up an item in the table.

atparam k the key to find

atreturn the value with the given key, or null if no

such item was found.

*/

public String lookup(String k)

{

String output = null;

for(Item item: people){

if(k.equals(item.getName())){

output = item.getNumber();

}

}

return output;

}

/**

Looks up an item in the table.

atparam v the value to find

atreturn the key with the given value, or null if no

such item was found.

*/

public String reverseLookup(String v)

{

String output = null;

for(Item item: people){

if(v.equals(item.getNumber())){

output = item.getName();

}

}

return output;

}

}

Item.java

public class Item {

private String name, number;

public Item(String aName, String aNumber){

name = aName;

number = aNumber;

}

public String getName(){

return name;

}

public String getNumber(){

return number;

}

}

input.txt

Abbott, Amy

408-924-1669

Abeyta, Ric

408-924-2185

Abrams, Arthur

408-924-6120

Abriam-Yago, Kathy

408-924-3159

Accardo, Dan

408-924-2236

Acevedo, Elvira

408-924-5200

Acevedo, Gloria

408-924-6556

Achtenhagen, Stephen

408-924-3522

Note: Replace all the "at" with at symbol

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Frank has created a résumé and separated the sections using headings. How can he set the headings apart from normal text?
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He could use bold or bigger text just a suggestion.
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Given a Student class, create a class with following characteristics:
Kay [80]

Answer:

ssume that,

Maximum “students” count can be 10.

*Driver Class*

*Solution class*

import java.util.*;

class Student {

private String name;

private int rollNo;

public String getName() {}

public void setName(String name) {}

public int getRollNo() {}

public void setRollNo(int rollNo) {}

};

class ClassRoom {

private int i;

private Student[] students;

public void addStudent(String name, int rollNo) {}

public Student[] getAllStudents() {}

};

8 0
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Ahat [919]

Answer:

California Identity Theft Statute

Explanation:

The California Identity Theft Statute, also referred to as the Penal Code 530.5 PC is a statute that clearly provides a definition of what the crime of identity theft actually is. Identity theft is a crime committed when the personal identifying information of another person is taken and used unlawfully or fraudulently. The statute further provide ample information to victims of identity theft in order to avert such occurrence or further damage.

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neonofarm [45]

Answer:

crt (cathode ray tube) vcr (video cassette recorder)

Explanation:

8 0
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