X Windows Fundamentals[Graphics] - Quiz Explanation
The answers you selected are indicated below, along with text that explains the correct answers.
1.
What is the primary purpose of an X Windows System?
Please select the best answer.
A.
Allows privileged users to control the machine over the Internet
B.
Controls input and output among several user graphical applications
C.
Prevents users from damaging display hardware
D.
Replaces the default Red Hat graphical interface API
The correct answer is B.
An X server handles user input by sending it to the correct process and handles output by displaying it on screen.
A is incorrect because X has nothing to do with controlling another machine. (However, an X server can display the output from an X application running on another machine.) C is incorrect because X does not perform this role, although it is important to remember that X must be configured properly to prevent damage to hardware. D is incorrect because an X Windows System is the method most UNIX-like operating systems use to handle the graphical user interface.
2.
What information about the video card must be supplied when installing X?
Please select all the correct answers.
A.
The amount of memory on the card
B.
The RAMDAC
C.
The card's chipset
D.
Whether or not the card supplies TV-out
The correct answers is A .
X must know how much memory the video card has at its disposal and the specific chipset it uses.
B is incorrect because it is not necessary to know the specifics on the RAMDAC during installation, though for certain cards,
xf86config
would prompt for this information. D is incorrect because it does not apply to the installation of X.
3.
Which specification must be known to avoid damaging the monitor?
Please select the best answer.
A.
The amount of video memory
B.
The monitor's scan rates
C.
The pixel pitch of the monitor
D.
The type of RAMDAC
The correct answer is B.
If X tries to use video signals with scan rates that are too high, the monitor can be seriously damaged.
A and C are incorrect because they cannot cause signals that would damage a monitor. D is incorrect because all video card RAMDAC on hardware intended for PCs should produce standard video signals. The amount of video memory only limits the resolution and color depth available. The pixel pitch is a property of the monitor that affects display clarity.
4.
Which video card parameter allows the display of higher resolutions and greater color depths?
Please select the best answer.
A.
Scan rates
B.
Chipset
C.
RAMDAC
D.
Memory
The correct answer is D.
Large amounts of memory allow for a larger number of pixels to be stored, and enable more detailed color information to be given to each pixel.
A is incorrect because the scan rate is a property of the monitor.
You can use it to find the board's manufacturer when seeking specifications.
B is incorrect because the chip set is the processor that performs display calculations; it does not store the video information. C is incorrect because the RAMDAC does not store the information; it converts it for use by the monitor.