Answer:
Embedded Operating System
Explanation:
An embedded operating system is a specialized operating system dedicated to perform a unique task for a digital device other than your desktop or laptop. For example, we can find this operating system appears in a washing machine to enable user to control the operation of the washing machine. This type of operating system is designed to be more resource efficient. An embedded operating system can also found in cars, digital television, ATM machine, digital camera etc.
Its use of the message digest 5 (MD5) hash algorithm for security.
CHAP uses a combination of MD5 hashing and a challenge-response mechanism, and authenticates without sending passwords as plaintext over the network. The security of the MD5 hash function is severely compromised.
<span>To reduce chances of system failure, engineers may use process control. This is a system which involves activities that ensures the whole process variables can be predicted and controlled to prevent failure. This involves the use of safety valves and sensors.</span>
Answer:
public class Person {
//fields
private int id;
private String name;
private Payment pay;
//constructor
public Person(String name, int id,
int startSal, int startBon){
this.name = name;
this.id = id;
this.pay = new Payment(startSal, startBon);
}
//method get name
public String getName(){
return name;
}
//method get id
public int getId(){
return id;
}
//method get start salary
public int getStartSalary(){
return pay.startSalary;
}
//method get start bonus
public int getStartBonus(){
return pay.startBonus;
}
//inner payment class
private class Payment{
int startSalary;
int startBonus;
public Payment(int sal, int bon){
this.startSalary = sal;
this.startBonus = bon;
The answer is a) It improves upon the two-phased commit by requiring that locks be acquired at the start of a transaction.
Reason: The 3PC is an extension or you can say developed from 2PC that avoids blocking of an operation. It just ensures that first n sites have intended to commit a transaction that means it acquires commits or locks before the start of any transaction to avoid any blocking.
Option b) is wrong as it does not allow coordination, it just let all the other sites do their transaction if any other site is blocked, so no coordination is there between sites that they will wait till their coordinator is corrected.
Option c) is wrong as lock operations are shared between other connections as when their coordinator fails, the new coordinator agrees to the old coordinator that they had shared locks before and they can start their transaction.
Option d) is wrong as option a) is correct.
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