ITEC2110 Fall 2007 Test 1, Dr. Jim Rowan, Monday September 10
Name________________________________
1)-Name one affordance that a bound book has that a document on the WWW does not
have.
2)-The WWW has many advantages and some disadvantages. One advantage is that a
correction to a document can be made once and that change will be available to everyone
on their next viewing. What is the downside of this advantage?
3)-Most bound books are intended to be read from front to back in a linear manner. Name
one bound book that is not intended to be read from front to back in a linear manner.
4)-Two central organizing themes for media are time-based and page-based. Name one
media that is uses time as its central organizing theme.
5)-What is the next number in this sequence if you are counting in hexadecimal (base
16)?
...09, 0A, 0B, 0C, 0D, 0E, 0F, ?
6)-What is the next number in this sequence if you are counting in base 5?
00, 01, 02, 03, 04, ?
7)-Are the number of ants in an anthill an example of a discrete or continuous real world
phenomenon?
8)-To model a continuous phenomenon that is found in the real world should the
phenomenon be counted or measured?
9)-The process of converting a continuous phenomenon into discrete data so that it can be
modeled in a computer is called sampling. To be able to model this continuous
phenomenon and then store it in a computer you must record both the sampling frequency
and what else?
10)-What does the Nyquist rate say about how frequently one should sample continuous
data in order to be able to faithfully reproduce it later?
11)-While sampling more frequently than the Nyquist rate produces a more high fidelity
representation of the continuous data, what is the downside of doing this practice?
12)-We listened to Fields of Gold performed by Eva Cassidy in class and discussed that
to produce a CD quality recoding a sample rate of 44,000 samples per second was
required and that each sample required two bytes (16 bits) of storage. If, rather than Eva
Cassidy, you wanted to produce a CD of sounds that dogs could hear but humans could
not, what would have to change?
13)-Telephone systems are produced to be economical yet still provide decent
reproduction of the human voice. To achieve this economy rather than transmitting the
full range of frequencies that humans can hear (20 to 22,000 cycles per second) the phone
companies restrict the phone transmission to a 2,000 cycles per second band of
frequencies from 2000 to 4000 cycles per second. Does this explain why music sounds so
crappy over the phone? Why?
14)-On film or in video the frame sampling rate is fixed. Sometimes that sampling rate
causes things in the scene to exhibit retrograde motion. What appears to be happening
when watching this film or video?
15)-For the sake of argument, assume that the gradient shown below was sampled and
that each sample is stored as 8 bits (one byte) resulting in 256 shades of gray.
What would this look like if each sample were stored as 2 bits rather than 8 bits?
16)-If the diagram above represented the disk drive of a computer where the black
rectangles represent occupied memory locations and the white rectangles represent
available, unoccupied memory locations would you say that this computer’s memory has
been recently defragmented?
17)-ADSL, cable modem, satellite and dial-up 56k ISP connections are all asymmetric
internet connections. In this case, what does asymmetric mean?
18)-The internet has both server and client programs. Is the browser that you use to
access websites on the internet (Internet Explorer, Firefox, Navigator) a client or a server
program?
19)-The IP address is used by the internet to route traffic from one end to another. Most
servers have fixed IPs but most home computers are connected to the internet through an
ISP that utilizes DHCP. What does that say about your home computer’s IP?
20&21)-Bitmapped graphics and vector graphics have very different internal models.
This affords them very different advantages and different disadvantages. If you were
going to make an animated short film which would you choose and why?
22&23)-Converting this internal model to an external model is also different for
bitmapped graphics and vector graphics. For which of these graphics models is this
conversion more computationally demanding? Why?
24&25)-Which is the more difficult conversion? Bitmapped to vector or vector to
bitmapped? Why?