8.Which is true about hardware resource allocation? A) Only one application can

Question

8.Which is true about hardware resource allocation?

A) Only one application can access a hardware resource at any given instant
B) Multiple applications can have truly simultaneous access to a single hardware resource
C) Once a hardware resource is used by a program, the computer must always be restarted to give it access to another program
D) Hardware resources can never be used by applications

15.There is a microprocessor on every current video card.
True
False
17.RAMDACs are used to convert video information on video cards for analog displays.

True
False
18.PCI-express video cards can be faster than AGP video cards.

True
False

Explanation / Answer

8 A) Only one application can access a hardware resource at any given instant
in multiprogramming/multitasking all the programes don't execute or utilize the same resource simultaneously.
OS keep switching resources between the applications.That is called context switch.
for this context switch there are many algorithms available.

15 B)False
Video card contains VDC/Video Display Controller , it's an  integrated circuit which is the main component in a video signal generator, a device responsible for the production of a TVvideo signal in a computing or game system. Some VDCs also generate an audio signal, but that is not their main function.

. . 17. True

18. True
PCI Express expands on and doubles the data transfer rates of the standard PCI interface.
PCI Express is a two way (point to point bus) serial connection which avoids performance problems that can arise from bandwidth sharing on a common bus. Regular PCI uses a single parallel connection. It provides greater tranfer speeds than PCI or AGP

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