State some advantages and some disadvantages of User Level Threads.

1.	State some advantages and some disadvantages of User Level Threads.
Answer» Some advantages of User Level Threads are as follows: User Threads can be easily implemented over kernel threads. User-level threading can be applied to operating system types that do not support kernel-level threading. It is faster and more efficient. Context switch TIMES are shorter than kernel-level threads. It does not require any CHANGES to the operating system and REPRESENTING streams at the user level is simple. Small registers, PCs, stacks, and flow control blocks are stored in the address space of a user-level process. It is easy to create, change, and synchronize streams without process intervention. Some Disadvantages of User Level Threads are as follows: User Level Threads lack coordination between thread and kernel. If one thread causes a page FAULT, the whole process is BLOCKED.

Answer»

Some advantages of User Level Threads are as follows:

User Threads can be easily implemented over kernel threads.
User-level threading can be applied to operating system types that do not support kernel-level threading.
It is faster and more efficient. Context switch TIMES are shorter than kernel-level threads.
It does not require any CHANGES to the operating system and REPRESENTING streams at the user level is simple.
Small registers, PCs, stacks, and flow control blocks are stored in the address space of a user-level process.
It is easy to create, change, and synchronize streams without process intervention.

Some Disadvantages of User Level Threads are as follows:

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