Introduction to Unix/Linux 801 - Test 1 Review
Linux provides some alternative and new command options. When used, these command options are preceded by
--(dash dash)'
The option part in the command line who -H am i is:
-H
The letter K represents bytes:
1024
The argument part in the command line cal 2 2001 is
2 and 2001
GB is about one billion bytes.
True
In the operating system model the service layer translates the service requests from users/programs and passes them to the kernel layer.
True
MB is about one million bytes.
True
The command layer or shell responds to the set of commands that are supported by the operating system.
True
The kernel layer manages all the hardware dependent functions.
True
The resident program layer provides hardware and software supports.
True
The shell program is part of the UNIX kernel.
True
The two major versions of the UNIX operating system are AT&T's UNIX version V and Berkeley UNIX.
True
UNIX is a multi-user, multi-tasking operating system.
True
UNIX looks at the devices such as printers and terminals as files.
True
Your password
must be at least six characters must contain at least two characters and one number must differ from your User Id all of the above
The command arguments are
optional part of the command line
The command options are
optional part of the command line
The command to change your password is
passwd
The Bourne shell is
the standard shell
You log off from the system by
typing exit command or [Ctrl-d] key
A machine cycle consists of
Instruction cycle and execution cycle
An open source operating system based on UNIX is___________.
Linux
One of the main features of UNIX is its ___________.
Portability
Computers main memory is primarily consist of:
RAM
In UNIX, the user interface is called the ____________.
Shell
ASCII code is one of the code schemes used to represent characters in a byte.
True
About 95 percent of the UNIX operating system is written in C language.
True
The $ prompt
indicates UNIX is ready to accept your next command
An Operating system:
is a collection of programs provides user interface is a resource manager all of the above - (Correct Answer)
The operating system model consists of
kernel layer, service layer, and user interface layer
UNIX was originally written in ___________ .
Assembly Language
A single-tasking operating system executes one program at a time for many users.
False
The UNIX operating system is available only on mini computers.
False
The kernel is the outer most layer of the operating system, and it is the only layer that interacts with the user.
False
The shell scripts are programs written in C language.
False
The utility layer provides the user-interface.
False
The version of Linux we will be using in class is _________.
Fedora
The init program
activates the getty program for each terminal
You log in to the system by
answering to the login prompt by typing your User Id
The command to display the calendar for January 2001 is
cal 1 2001
