Answer:
Automatic and Explicit Buffering.
In the case of explicit buffering, the length of the queue is provided while in automatic buffering the queue size needs to be indefinite. In automatic buffering there is no need to block the sender while coping the message. While in explicit buffering the sender is blocked for the space in queue.
No memory is being wasted in explicit buffering.
Send by Copy and Send by Reference.
By using the send by copy method, the receiver is not able to change the state of parameter while send by reference allow. The advantage of using the send by reference method is that it allows to change a centralized application to its distributed version.
Fixed-sized and Variable-sized Messages.
In fixed size messaging refers, the buffer size is fixed. This means only a particular number of messages can only be supported by the fixed size buffer. The drawback of the fixed size messages is that they must be a part of fixed size buffer. These are not a part of variable size buffer. The advantage of variable size message is that the length of the message is variable means not fixed. The buffer length is unknown. The shared memory is being used by the variable size messages.
Explanation:
Answer:
import java.util.Scanner;
class Main {
public static int calcSeries(int n) {
int sum = 0;
for(int i=10; i>=n; i--) {
sum += i;
}
return sum;
}
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
int n = 0;
do {
System.out.print("Enter n: ");
n = reader.nextInt();
if (n >= 10) {
System.out.println("Please enter a value lower than 10.");
}
} while (n >= 10);
reader.close();
System.out.printf("sum: %d\n", calcSeries(n));
}
}
Answer:
The answer is "option d".
Explanation:
UML stands for Unified Modeling Language. It is an OOPs based language that is used to design a graphic by software developers. This language can also be used to build diagrams and provide some tools to ready-to-use, interactive templates for users and other options are not correct that can be described as:
- In option a, The Top-down approach is not followed by UML.
- In option b, UML uses an object-oriented programming language that follows a bottom-up approach. It refers to a style of programming.
- In option c, It does not use structured programming because it uses procedural languages.
<b></b> <span>element when used to strongly emphasize portions of text within a document.
<p></p> </span><span>tag defines a paragraph.
<ol></ol> </span><span>Defines an ordered list
<a></a> </span><span> tag defines a hyperlink</span>
Answer:
Option D Use Amazon SQS to decouple the application components and keep the requests in queue until the extra Auto-Scaling instances are available.
Explanation:
Amazon SQS is a service that user to decouple the application components and keep the request in queue. This is useful to ensure the distribution of message can be done more reliably and without losing the message. Amazon SQS increase the system fault tolerance. Multiple duplicated copies of the message will be stored across several availability zones to ensure the message are always available whenever it is needed.
