CSCI1412Lecture 12 Q & A

Interfacing and I/O Peripherals

Dr John Cowell

phones off (please)

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Q 1Which of the following is NOT a true statement

about PCIea) PCIe can transit data in both directions at the

same time.b) Physical PCIe slots may contain 1,2,4,8,16.32

lanes.c) Transmitted data is interleaved.d) NVIDIA’s SLI technology allows multiple graphics

cards to be run in tandem.e) Accelerated Graphics Port (AGP) is inherently

faster than PCIe.

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Q2

Which of the following is NOT a true statement about USB ports:

a) The maximum length of cable from hub to device is 5m

b) Up to 127 devices may be connected to a single hub.

c) Up to six tiers of hubs are permitted.d) USB is able to send data in both directions at the

same time.e) USB 2.0 supports speeds of up to 480Mbits/sec

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Q3Which of the following technologies would you

use for marking multiple choice papers?OMROCRMICRUPCDSP

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Q4Why are ‘speech to text’ applications not

more widely used?a) The software required is too complex.b) The software is very expensive.c) A decent typist can type faster and with more

accuracy that he can speak, particularly in a noisy office.

d) The recognition rate is only 40% for untrained users.

e) Especially sensitive (and expensive) microphones are needed.

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Answers:Q1 – EQ2 – D – data can only be sent in one direction at

a time.Q3 – A (Optical Mark Reader)Q4 – C