Question Discussion & Solution

Rohit started walking towards the west.

He walked for 300 m and turned to his right from the post office.

From there, he walked for 200 m.

He then turned to the left and walked a few steps.

Rohit is now standing in front of West direction.

Hence, "West" is the correct answer.

Blades are necessary part of fan. Fan can be branded or local. Current and switches are important for functioning so they are not necessary for manufacturing a fan.

Anger is an emotion; it needs special skills as to control it.

Assumptions - 

I: Anger need to be controlled - This cannot be considered as an implicit assumption as there is no mention that anger needs to be controlled, it just says controlling it requires special skills.

II: Only skillful people can control it - This is an implicit assumption as can be seen directly through the statements given.

Hence, Option 2 is the correct answer.

In this question shows that Cauliflower is vegetable but remaining Guava, Pomegranate and Mango are fruit. 

Hence, "Cauliflower" is the correct answer. 

The correct answer is Single-User Operating System.

Important Points

• Single-User Operating System
  • Performs a single task for Single-user.
  • This operating system is designed to manage the computer so that one user can effectively do one thing at a time.
  • Examples include Microsoft Windows.

Additional Information

• The different types of Operating System:
• Batch Operating System
  • There is no direct communication between the computer and the OS.
  • There is an intermediate, the Operator.
  • The operator distributes the work into batches.
• Real-Time Operating System
  • The processing time is very small between the user’s command and the output such that there is no operator.
• Time-Sharing Operating System
  • Multiple people at various computers can use a program at the same time.
• Distributed Operating System
  • When two or more systems are connected to each other and one can open each other's files.
• Embedded Operating System
  • These special Operating systems are built into larger systems.
  • They are limited to single specific functions like an ATM.
• Network Operating System
  • They have one main server which is connected to other client servers.
  • It provides a secure operating system for working with multiple users.