Which of the following bus interfaces are used by the video capture cards?
Each correct Answer represents a complete solution. Choose two.
A.
VESA
B.
AGP
C.
PCIe
D.
EISA
Explanation:
Answer
A video capture card is a computer component that allows television signals to be received by a
computer. It also allows television programs to be recorded onto a hard disk. Most TV tuner cards
also function as video capture cards. Video capture cards are a class of video capture devices
designed to plug directly into expansion slots in personal computers and servers. These cards comply
with one of the popular host bus standards including PCI, newer PCI Express (PCIe), or AGP bus
interfaces.
What is PCI Express (PCIe)?
PCI Express (PCIe), also known as 3rd Generation I/O (3GIO), is a type of computer bus. It is a new
I/O bus technology that has more bandwidth than PCI and AGP slots. It uses two low-voltage
differential pairs, at 2.5Gb/s in each direction. It is designed to replace PCI and AGP expansion slots.
The bus is available in several different bus widths: x1, x2, x4, x8, x12,
x16, and x32. PCIe is able to transfer data in both directions at a time. PCIe hardware will work on
operating systems that support PCI.
What is AGP (Accelerated Graphics Port)?
AGP is a high speed 32-bit bus designed for high performance graphics and video support. It allows a
video card to have direct access to a computer’s RAM, which enables fast video performance. AGP
provides a bandwidth of up to 2,133 MB/second.
Answer options D and A are incorrect. These are the old bus interfaces and not used by the video
capture cards.
What is an ISA bus?
Industry Standard Architecture (ISA) is an 8-bit expansion bus that provides an interface from
devices on expansion cards to the computer’s internal bus. A later version of ISA bus comes with a
16-bit expansion slot.
Reference: “http://en.wikipedia.org/wiki/Video_processing_expansion_card#Video_capture”