Question Discussion & Solution

The correct answer is option 4.

Concept:

CPU Scheduling is a process of determining which process will own CPU for execution while another process is on hold. All Cpu scheduling algorithms use various parameters which are,

Arrival Time: Time at which the process arrives in the ready queue.

Schedule time: Time at which the process arrives ready to running state.

Completion Time: Time at which the process arrives running to terminate state.

Burst Time:  Time spends the process running state.

Turn Around Time:

Turn Around Time= Completion Time – Arrival Time.

Waiting Time:

Waiting time is the total time spent by the process in the ready state waiting for the CPU.

Response time:

Response time is the difference between first execution time and Arrival time.

CPU utilization:

CPU utilization refers to a computer's usage of processing resources or the amount of work handled by a CPU.

Throughput:

Throughput is the amount of work completed in a unit of time.

Throughput = no .of process completed / time taken.

Hence the correct answer is A, B, C, and D.

Let Rahul’s age be x.

Let Rita’s age be y.

Let Ekta’s age be z.

⇒ x = y + 3

⇒ y = 4z – 3

⇒ x = 4z – 3 + 3

⇒ x = 4z

⇒ x/z = 4

⇒ x ∶ z = 4 ∶ 1

The correct answer is Hydrogen.

Key Points

• Hydrogen has atomic number 1 and is placed in group 1 along with alkali metals.
• It is the first element in the periodic table.

​Additional Information

• Hydrogen was discovered by Henry Cavendish.
• Hydrogen gas is called the fuel of the future.
• The most abundant element in the universe is Hydrogen.
• The most abundant element on earth's crust is Oxygen.
• Hydrogen is the 'lightest element' in the periodic table.
• Lithium is the 'lightest metal' in the periodic table.

Option 1 is the correct answer: Local Area Network (LAN) has the highest transmission speed.

The correct answer is Virus.

• A disruptive program that spreads from program to program or from disk to disk is known as a Virus.
• A computer virus is designed to spread from host to host and has the ability to replicate itself. 
• When this replication succeeds, the affected areas are then said to be "infected" with a computer virus.
• A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code.
• In the process, a virus has the potential to cause unexpected or damaging effects, such as harming the system software by corrupting or destroying data.
• Once a virus has successfully attached to a program, file, or document, the virus will lie dormant until circumstances cause the computer or device to execute its code.