$68.$ The above code can generate an execution error that will be controlled by the OS:

int main$()\{$

int i$[2]=\{6,2\}$;

int r$-$i$[0]/[1]$;

i$[100]=$r;

printf$("[1]/[2]=\%$d$",$r$)$;

$72.$ The Linux command line "clear" corresponds system call open$()$ belongs to the services :

A$.$ I$/$O Operations

B$.$ User interface

C$.$ File$-$system manipulation

D$.$ Program execution

$73.$ Programmer with high level language invokes system call by:

A$.$ A number

B$.$ The name of the wrapper of the system call

C$.$ The general name of API

D$.$ The specific name of an API library

$74.$ The code of a user application must indicate to the operating system:

A$.$ The number of each system call

B$.$ The generic names of system calls

C$.$ The specific name of the system call

D$.$ The general name of the API

E$.$ The specific name of the API library that correspond to the wapper of system call

$75.$ The number of the most known API is:

A$.2$

B$.4$

C$.3$

D$.1$

$76.$ The number of the most known programming languages used in order to develop system calls

is:

A$.2$

B$.4$

C$.3$

D$.1$

$77.$ The shell command offered by linux OS in order to track the system calls generated by one

program is:

A$.$ track

B$.$ trace

C$.$ strace

D$.$ ptrack

$78.$ System call parameters specification does not include:

A$.$ Number of parameters

B$.$ Names of parameters

C$.$ Types of parameters

D$.$ Values of parameters

$80.$ the translation of the call system number to the address of the system call code is made by:

A$.$ API

B$.$ Compiler and API

C$.$ Compiler

D$.$ OS

$82.$ We aren't waiting for the system call to return to us:

A$.$ A returned value

B$.$ A result

C$.$ A status value

D$.$ The number of parameters

$84.$ Generally, layered operating system is:

A$.$ Microkernel system

B$.$ Monolothic kernel system

C$.$ No kernel system

D$.$ Shell kernel

$94.$ The layer is the lowest layer$($bottom$)$ is the layered operating system architecuter :

A$.$ File management layer

B$.$ User interface

C$.$ Kernel $($process manager$)$

D$.$ Memory management layer

$95.$ A java language programmer identifies system call by using:

A$.$ A number

B$.$ the name of the wrapper of the system call$($java statement$)$

C$.$ The general name of API

D$.$ The specific name of an API library

$98.$ What is the wrong definition of an operating system :

A$.$ It is the one program running at all times on the computer usually called the BIOS

B$.$ It is a software that manages the computer hardware and provides an environment for application

programs to run

C$.$ It is a program that acts as an intermediary between a user of a computer and the computer hardware

D$.$ It is the one program running at all times on the computer usually called the kernel

$104.$ This method is used by system call to pass parameters to the OS :

A$.$ record

B$.$ frame

C$.$ Stack

D$.$ folder

$105.$ Program invoke system calls through:

A$.$ records

B$.$ links

C$.$ API

D$.$ variables

$106.$ A programmer thinks that OS is:

A$.$ A set of facilities

B$.$ A set of services

C$.$ A set of forms

D$.$ A set of system calls

$107.$ The following OS service was designed as a special service:

A$.$ Error detection

B$.$ I$/$O operations

C$.$ Resource allocation

D$.$ File$-$system manipulation

$108.$ The Linux command line "cat" is used to call a $........$ services

A$.$ I$/$O operations

B$.$ User interface

C$.$ File$-$system manipulation

D$.$ Program execution

$109.$ Unix operating system is considered as:

A$.$ Shell kernel system

B$.$ Microkernel system

C$.$ No kernel system

D$.$ Monolothic kernel system