The correct answer is B. Primary DNS Server.
DNS records are type of data that is equivalent to IP address where the website or domain is located. DNS records are normally stored in DNS server in a raw or flat file. A host, using port number 53 will send a DNS request to the server. If the computer has stored it's data or record in it's database, it will automatically reply to the requesting host. Example: You typed in www.website.com, if you have a matching DNS record in your server, using an IP address, your server will reply and display the website.
<h2>
Question:</h2>
<em>Which XXX declares a student's name. </em>
public class Student {
XXX
private double myGPA;
private int myID;
public int getID() {
return myID;
}
}
<em>Group of answer choices </em>
a. String myName;
b. public String myName;
c. private myName;
d. private String myName;
<h2>
Answer:</h2>
private String myName;
<h2>
Explanation:</h2>
To declare a student's name, the following should be noted.
i. The name of the student is of type <em>String</em>
ii. Since all of the instance variables (myGPA and myID) have a <em>private</em> access modifier, then myName (which is the variable name used to declare the student's name) should be no exception. In other words, the student's name should also have a <em>private</em> access.
Therefore, XXX which declares a student's name should be written as
<em>private String myName;</em>
<em></em>
Option (a) would have been a correct option if it had the <em>private</em> keyword
Option (b) is not the correct option because it has a <em>public</em> access rather than a <em>private</em> access.
Option (c) is not a valid syntax since, although it has a <em>private</em> access, the data type of the variable <em>myName</em> is not specified.
Option (d) is the correct option.
<span>The trap command is useful when you want your shell program to automatically remove any temporary files that are created when the shell script runs. The trap command is a basic, but a very beneficial tool. If the script generates temporary files, like a simple script that changes FOO for BAR in entirely files in the existing directory, /tmp file will be clean when you exit the script.</span>
What is the value of vals[4][1]? double[][] vals = {{1.1, 1.3, 1.5}, {3.1, 3.3, 3.5}, {5.1, 5.3, 5.5}, {7.1, 7.3, 7.5}};
Andreyy89
Answer:
When the user concludes the value of "vals[4][1]", then it will give an exception of "ArrayIndexOutOfBoundsException".
Explanation:
- It is because the size of the above array is [4*3] which takes the starting index at [0][0] and ending index at [3][2]. It is because the array index value starts from 0 and ends in (s-1).
- When the double dimension array size is [5][5], then it will conclude the value of [4][1].
- The above array have following index which value can be calculated :-- [0][0],[0][1],[0][2],[1][0], [1][1],[1][2], [2][0], [2][1], [2][2],[3][0],[3][1] and [3][2].
