Question

1.

a. (True/False) A single process can have more than 2 threads.

d. (True/False) Every thread has its own virtual address space.

f. (True/False) A process may have 0 threads.

g. (True/False) Threads belonging to separate processes cannot share memory.

h. (True/False) Like function ‘fork’ in the process API, function ‘pthread_create’ creates a clone of the current thread.

i. (True/False) Condition variables can be implemented using locks as the only available synchronization primitive.

j. (True/False) Dekker’s mutual exclusion algorithm does not use a test-and-set instruction.

Answer 1

a. True A single process can have more than 2 threads

Depending on the OS , there is a maximum limit for creating number of threads we can create within a process.

d. False . Every thread has it's own virtual address space.

Threads are light weight process which are associated with same virtual space as with the same process.

f. True . A process may have 0 threads

Yes,, Threads are optional . It depends on the programming requirement to use them or not.

g. False,

Threads belong to same process , so they can share the memory

h. True

‘pthread_create’ creates thread under current process

i. False

Semaphores are also other synchronization methods.

j. True  

Dekker’s mutual exclusion algorithm does not use a test-and-set instruction.