Computer Science: operation system questions. WIll give thumb up, thank you!

Choose all the options that are true about semaphores Select one or more: a. A basic semaphore can be implemented using an integer variable. b. The value of a binary semaphore can take any real value between 0 and 1 C. Counting semaphores can range over an unrestricted domain. d. Two processes cannot execute wait) and signal) operations on the same semaphore at the same time. e. SInce semaphores are managed by the OS, two processes can issue wait) or signal) operations on the same semaphore at the same time. iting queue, deadlocks can processes because of the signalO) event What are the different ways of doing IPC? Select all options that are true. Select one or more: a. Signals b. Interrupts C. Message passing d. Shared memory e. Remote procedure calls f. Parameter passing g. loadable kernel modules h. Kernel l/O