CSC 110 - Quiz 1

A process may create several new processes via

• parent process

• children process

• create-process system call

• system call

In a time-sharing system, the CPU is switched among processes so frequently that:

• The CPU utilization is minimized

• Users can interact with running programs in real time

• The CPU remains idle between context switches

• Only one process is executed at a time

When a process creates a new process, two possible execution scenarios exist:

• The child replaces the parent, or they execute concurrently

• The parent waits for the child, or they execute concurrently

• The child immediately terminates, or the parent continues

• The child runs in a different CPU, or the parent takes control of the child

Which of the following statements about cooperating processes is true?

• Cooperating processes must run on different CPUs

• Cooperating processes cannot communicate with each other

• Cooperating processes are only used in distributed systems

• Cooperating processes share data and influence each other’s execution

Which of the following scheduling queues contains processes that are ready to execute and reside in main memory?

• Ready queue

• Job queue

• I/O queue

• Termination queue

What is a key difference between a process and a thread?

• A thread is independent of its parent process

• A process can have multiple threads, while a thread runs independently

• A thread cannot share memory with other threads in the same process

• A process runs only one thread at a time

The One-to-One Model provides more concurrency than the Many-to-One model because:

• It maps multiple user threads to a single kernel thread

• It allows multiple threads to run in parallel on multiprocessors

• It prevents context switching

• It avoids creating kernel threads entirely

What is hyperthreading in modern processors?

• A technique that enables multiple processes to share a single core

• A method to execute two threads simultaneously using the same CPU core

• A mechanism to prioritize kernel threads over user threads

• A way to allocate memory more efficiently across multiple processes

Which statement about the fork() and exec() system calls is true?

• fork() and exec() always run in kernel mode

• exec() creates a new process, while fork() terminates the current process

• A method to execute two threads simultaneously using the same CPU core

• fork() duplicates current process, exec() replaces it with a new program

Which of the following is an advantage of multithreading?

• Threads share the memory and resources of the process they belong to

• Threads execute sequentially, reducing resource conflicts

• Each thread must request permission before accessing shared resources

• Each thread requires separate memory allocation