CSCE 3600 EXAM 1 2025 QUESTIONS
AND ANSWERS
True - ANS (T/F) Applications interact with the kernal through system calls?
user and kernal mode - ANS The dual mode operations of an operating system are called __
modes.
1. Application software
2. System software - ANS What are the 2 major software categories in System Software
Design?
1. Process Control
2. File Manipulation
3. Device Manipulation
4. Information Maintenance
5. Communications - ANS name 5 system calls categories in linux.
false - ANS (T/F) In an operating system, users can manage hardware directly and ignore the
OS interface
false - ANS (T/F) in Linux, the OS knows that a program is going to use a system call, so the
application is always running in kernal mode
1. provides direct interface to hardware and applications
1 @COPYRIGHT THEBRIGHT 2025/2026
, 2. management of resources such as file, processes, devices, etc. - ANS Give one example of
what the kernal in linux is responsible for:
trap-mode bit - ANS transfer control to the kernal mode
return-mode bit - ANS returns to the user mode after servicing request
true - ANS the linux "find" command can also be used to perform actions, such as the chmod
command, on files matching the given pattern
no - ANS (yes/no) Consider the following result from the ls -l firstexam command in Linux:-r-
xr----x 1 xyz0123 csce3600 124 Oct 5 14:30 firstexam. Assuming that you are not user xyz0123,
can you as a member of group csce3600, execute the command firstexam?
multiuser, multitasking operation system - ANS linux is a __ system.
-r--r-xr-x - ANS After issuing the command chmod go+rx test.c, which of the following file
permissions is possible for the regular file test.c?
542 - ANS What octal number would be used with the chmod command to give a file or
directory the r-sr---w- permissions?
true - ANS (T/F) the kernal is the central part of the OS in linux
true - ANS (T/F) in linux, the standard libraries (such as shells, commands, compilers, and
systems libraries) run in user mode?
fopen - ANS in linux, what is a corresponding I/O library call or the I/O system call open?
2 @COPYRIGHT THEBRIGHT 2025/2026
AND ANSWERS
True - ANS (T/F) Applications interact with the kernal through system calls?
user and kernal mode - ANS The dual mode operations of an operating system are called __
modes.
1. Application software
2. System software - ANS What are the 2 major software categories in System Software
Design?
1. Process Control
2. File Manipulation
3. Device Manipulation
4. Information Maintenance
5. Communications - ANS name 5 system calls categories in linux.
false - ANS (T/F) In an operating system, users can manage hardware directly and ignore the
OS interface
false - ANS (T/F) in Linux, the OS knows that a program is going to use a system call, so the
application is always running in kernal mode
1. provides direct interface to hardware and applications
1 @COPYRIGHT THEBRIGHT 2025/2026
, 2. management of resources such as file, processes, devices, etc. - ANS Give one example of
what the kernal in linux is responsible for:
trap-mode bit - ANS transfer control to the kernal mode
return-mode bit - ANS returns to the user mode after servicing request
true - ANS the linux "find" command can also be used to perform actions, such as the chmod
command, on files matching the given pattern
no - ANS (yes/no) Consider the following result from the ls -l firstexam command in Linux:-r-
xr----x 1 xyz0123 csce3600 124 Oct 5 14:30 firstexam. Assuming that you are not user xyz0123,
can you as a member of group csce3600, execute the command firstexam?
multiuser, multitasking operation system - ANS linux is a __ system.
-r--r-xr-x - ANS After issuing the command chmod go+rx test.c, which of the following file
permissions is possible for the regular file test.c?
542 - ANS What octal number would be used with the chmod command to give a file or
directory the r-sr---w- permissions?
true - ANS (T/F) the kernal is the central part of the OS in linux
true - ANS (T/F) in linux, the standard libraries (such as shells, commands, compilers, and
systems libraries) run in user mode?
fopen - ANS in linux, what is a corresponding I/O library call or the I/O system call open?
2 @COPYRIGHT THEBRIGHT 2025/2026
