Operating System (OS)
What are the two types of Semaphore?

Analog Semaphores and Octal Semaphores
Counting Semaphores and Binary Semaphores
Digital Semaphores and Binary Semaphores
Critical Semaphores and System Semaphores

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Operating System (OS)
Identify false statement

You can increase free space of disk by sending files in recycle bin
You can find deleted files in recycle bin
You can right click and choose Empty Recycle Bin to clean it at once
You can restore any files in recycle bin if you ever need

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Operating System (OS)
A real time operating system is most likely to be used for which of the following task?

Ensuring that system clock works correctly on server
Controlling the fuel injection system of an automobile engines
Managing the access to system files in a laptop computers
Controlling access to a shared printer in a network

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Operating System (OS)
The function(s) of the Syntax phase is(are)

to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs.
to build a literal table and an identifier table
to parse the source program into the basic elements or tokens of the language.
None of these
to build a uniform symbol table

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