Regarding implementing an OS, which of the following statements is false java is

Question

Regarding implementing an OS, which of the following statements is false java is the best programming language because its JVM is part of every OS already Assembly language is generally used to implement functionalities close to the hardware. C is a better choice than, say, C++ or C# because it is more concise. Today's OSs may use other languages beside assembly and C, such as C++ or C#, in its implementation. Which of the following Unix statements regarding Unix command is true? The "touch" does not change existing file's contents ellipsis it merely updates the timestamp for its last access The cat command is designed to concatenate strings to form single string. We can use the "which" command to find the version of the current OS The "man" command is designed to provide detailed explanations of every Unix commands. Regarding a process's stack and its heap, which of the following statements is false? They are both allocated in a computer's RAM. In a multi-threaded application, each thread will have its own stack. But, all threads share the heap, Once a function call completion, any data on the stack created specifically for that function call will automatically be deleted. Any data on the heap will remain there until it is manually deleted by the programmer. Allocating memory space on the Stack and Heap takes the same effort.

Explanation / Answer

1)A,C
A)I think a,c statements are false because in 1995-1999 the sun microsystems developed the os with java but it is very much slower than the other systems writtem on c and c++ those OS can able to interact with hardware directly but the java os cannot because the java program interacts with JVM which in turn interacts with hardware.
C)I think C++ is more concise than the C.It is more safe than the dealing with C one of the main reason is object oriented that the main reason we deal with c++.

2)A,B,D are true but D states that
Which command is a simple command to locate executables in the system. “which” commands searches the path of executable in the system paths set in $PATH environment variable.

3)A,B,C are true but D states that
Allocating memory on the stack is fast because it is simple as moving the stack pointer up.

This Answer is Posted according to my research on those points thank you.

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