Question Discussion & Solution

The correct answer is option 1.

Concept:

When a process requests for the resource that is been held another process that needs another resource to continue, but is been held by the first process, then it is called a deadlock.

There are 4 conditions necessary for the occurrence of a deadlock.

Mutual Exclusion:

Only one process can hold a resource at a time. In other words, if a process P1 is utilizing a resource R at a specific moment in time, another process P2 cannot hold or utilize the same resource R at that same moment. Process P2 can make a request for that resource R, but it cannot use it at the same time as process P1.

Hold and Wait:

A process can hold several resources at the same time while also requesting resources from another process. A process P1, for example, can have two resources R1 and R2 while also requesting a resource R3 that is currently owned by process P2.

No preemption:

A resource cannot be forcibly removed from a process by another process. If a process P1 is using a resource R, for example, another process P2 cannot take that resource by force. If that's the case, what's the point of using different scheduling algorithms?  Process P2 can make a request for the resource R and then wait for process P1 to liberate it.

Circular Wait:

The first process is waiting for the resource held by the second process, and the second process is waiting for the resource held by the third process, and so on. Finally, the last process is waiting for the first process's resource. As a result, each process is waiting for the other to release the resource, with no one releasing their own. Everyone is waiting for the resource to arrive. This is referred to as a circular wait.

Hence the correct answer is Mutual Exclusion, Hold and Wait, No Preemption, and Circular Wait.

Given Word : INTOXICATE

OCTANE → INTOXICATE → Can be formed

ACNE → INTOXICATE → Can be formed

ACTION → INTOXICATE → Can be formed

CENTRE → INTOXICATE → as R and second E is missing → cannot be formed

The Correct Answer is Two.

 Key Points

• The water molecule is composed of two hydrogen atoms, each linked by a single chemical bond to an oxygen atom.
• Most hydrogen atoms have a nucleus consisting solely of a proton. 
• Water is a tasteless and odorless liquid at room temperature.
• It has the important ability to dissolve much other substance.

 Additional Information

• Two isotopic forms, deuterium and tritium, in which the atomic nuclei also contain one and two neutrons, respectively, are found to a small degree in water.
• Deuterium oxide (D2O) is called heavy water
• It is used as a neutron moderator in some nuclear reactors.

Explanation:

• The purpose of regression testing is to confirm that a recent program or code change has not adversely affected existing features.
• Regression testing is nothing but a full or partial selection of already executed test cases that are re-executed to ensure existing functionalities work fine.
• This testing is done to make sure that new code changes should not have side effects on the existing functionalities. It ensures that the old code still works once the new code changes are done.

The purpose of regression testing is to select test cases partially or fully to ensure existing functionalities work fine. Thus, regression testing is primarily related to functional testing

Need of Regression Testing

• Regression Testing is required when there is a change in requirements and code is modified according to the requirement or when one of the following has been done.
  • New feature is added to the software
  • Defect fixing
  • Performance issue fix

The correct answer is Pali.

• Jawai River:
  • Origin of Jawai River - Jawai river originates from the hills of Goria village of Bali tehsil of Pali district.
  • The main cause of water pollution in the Jawai river is the dyeing and printing industry.
  • Tributaries of Jawai River - Bandi River, Sukri River, and Khari River are its tributaries.

Key Points

• Luni Tributaries:
  • The main tributaries of Luni joining from the left are the Lilri, the Guhiya, the Sukri, the Jawai, the Bandi (Hemawas), the Khari Bandi, the Sukri Bandi and the Sagi.
  • Jojri is the only major tributary that joins the Luni river from the right.

Additional Information 

Other Important rivers of Rajasthan: