Answers to Quiz on chapter 1 of book Linux Device Drivers

Here is the solution to the Quiz on chapter 1 of book Linux Device Drivers

1. A device driver provides
Ans: Policy

2. A piece of code that can be added to kernel at runtime is called as
Ans: Module

3. /dev/conosle is a
Ans: Character Device

4. To link an object code dynamically to the running kernel we can use the command
Ans: insmod

5.Who is allowed to load modules into the kernel ?
Ans: Superuser

6.The linux is versioned under which license ?
Ans: GNU GPL 2

7.Which of the following is not a class of devi ce
Ans: String

8.Third party softwares should be treated with care to take care of the
Ans: Security of kernel

9.Is it possible to compile the linux kernel with not support for modules ?
Ans: Yes

10.Linux supports only i386 architecture true or false ?
Ans: False

Quiz on chapter 1 of book Linux Device Drivers (LDD3

Linux Device Drivers (LDD3)

1. A device driver provides

Policy
Mechanism
Policy and Mechanism
Neither of them


2. A piece of code that can be added to kernel at runtime is called as

Model
Program
Module
Kernel Code


3. /dev/consosle is a

Character Device
Block Device
Network Device
USB Device


4. To link an object code dynamically to the running kernel we can use the command

insert
modins
inmod
insmod


5. Who is allowed to load modules into the kernel ?

Superuser
All users
Kernel
No body


6. The linux is versioned under which license ?

GNU GPL 1
No license
GNU GPL 2
NON GNU GPL


7. Which of the following is not a class of devi ce

Character
String
Block
Network


8. Third party softwares should be treated with care to take care of the

Security of kernel
Look of the kernel
Language of the kernel
Length of the code


9. Is it possible to compile the linux kernel with not support for modules ?

Yes
No
Depends on the Compiler
Depends on the architecture


10. Linux supports only i386 architecture true or false ?

True
False
Depends on the compiler
It supports only one other architecture.

5 useful tips for nautilus users

Here are 5 useful tips to get your work done faster when using nautilus,the genome desktop manager. 1.Split windows:

We are always used to viewing only a single window and generally use alt+tab to switch between multiple open windows. But nautilus has an option using which we can have two windows open side by side as shown below.



To open the two windows at the same time, just open nautilus and press F3 and the window will automatically split into two windows, and both of them can be controlled independently.

Press F3 again to go back to single window mode.

2. Open-Terminal:

For people who work on the terminal a lot, it might be useful to directly open a terminal in the same folder which is being displayed by nautilus. For e.g. in the following figure nautilus is at "/root" if we right click and click on open in terminal then the terminal will open with its present working directory as /root.



If the option "open in terminal" is not visible, then we will have to install the package "nautilus-open-terminal".

sudo apt-get-install nautilus-open-terminal

3. Change the view: We can change the view of the nautilus using the keyboard shortcuts

cntrl + 1 : Icons view



cntrl + 2 : List View



cntrl + 3 : Compat view .



4. Direct Delete: When we right click on any file or folder in nautilus we get an option "move to trash", which is what is used to delete a file or a folder. On using this option the chosen file/s are moved to trash and then we have to empty trash to get rid of the files permanently.



We can enable another option in the right click which will directly delete the file without moving it to trash. Click on

edit->preferences

Click on the tab "Behavior"



In this tab click on the check box for "Include a delete command that bypasses trash"



Now click on close and right click on any file or folder to find an additional option called as "delete". But be careful while using this option as once a file is deleted using this option it can not be recovered.

5. Adding bookmarks:

The left pane in nautilus generally displays links to Documents,Music,Pictures,Videos,Downloads. Other and these we can add folder,that we access often, to the pane either by simply dragging and dropping the folder into the pane or by clicking on

Bookmark->Add Bookmark