Unit
2 Specialist Reading (Page 16)
1. One
of the main causes of a PC not running at its highest potential speed is memory
cache.
2.
The
word in the text is used instead of ‘buffer’ is cache
3. The device looks after cache coherency is cache
controller.
4.
The
main alternative to “write-through cache’ is ‘write-back’ cache which allow the
processor to write changes only to the cache and not to main memory.
5. It write-back when cache entries that have changed are
flagged as 'dirty'
6. The data marked as ‘dirty’ in write-back cache Data
marked as ‘dirty’ in a write-back cache when data in the cache had changed
7. An algorithm
determines what data is replaced in a disk cache
Unit
7 Specialist Reading (Page 30)
1. What
is Curie Munce's main aim ?
Answer
: The Curie Munce's main aim is build bigger storage.
2. How
quickly did the possible areal density of hardisk increase in the 1990's ?
Answer : The areal density of hardisk
increase in the 1990's, it doubled every 18 months.
3. How
long does Munce think magnetic recording technology will continue to make rapid
advances in capacity ?
Answer
: He think magnetic recording technology will continue to make rapid advances
in capacity about 5 to 10 years.
4. What
problem does he predict for magnetic storage ?
Answer
: The problem for magnetic storage is substantial difficulties with further
advances at the pace people are accustomed to.
5. What
is the predicted limit for discrete bit magnetic storage capacity ?
Answer
: The predicted limit for discrete bit magnetic storage capacity is 10 terabits
for square inch
6. What
storage technologies might replace current magnetic systems ?
Answer
: There are atomic force microscopy (AFM) and holographic storage.
7. What
is the advantage of holographic storage being three-dimensionals ?
Answer
: The advantage of holographic storage being three-dimensionals is to makes it
an appealing storage medium because page of data can be superimposed on a
single volume imagine transferring a whole page of text at once as opossed to
reading each letter in sequence.
8. What
improvements are predicted due to the fast access rates and transfer times of
holographic storage ?
Answer
: The predicts that the fast access rates and transfer times of holographic
storage will lead to improved network searches, video on demand, high end
servers, enterprise computing, and supercomputing.
9. What
is predicted to be the most important high capacity removable storage media in
the next 10 years ?
Answer
: The most important high capacity removable storage media in the next 10 years
are recordable CD-ROMs and DVDs
10. What
method of software distribution is likely to replace optical disks ?
Answer : The
software distribution is likely to replace optical disks are cheap to produce
and online delivery
Unit
7 Describe the function of these
features using ‘enabling’ verbs (page 48)
1. In a window, the vertical scroll bar is used to view the data contained in the worksheet that exceeds one screen display .
2. The Find command is used to search for a file.
3. The Undo command enables you to refund one step backward to the previous conditions ,
4. Cut and Paste lets you copy and paste the results of the command copy to clipboard
5. Print
Screen key will print an image of the entire screen to the clipboard
6. Menuisa
user interface element that contains selectable commands and options for a
specific program that enable you to select an option.
7. Recycle
bin as a place to put the files that have been deleted and restoredback the
files that we have deleted before.
8. Tooltips
is a message that appears when a cursor
is positioned over an icon, image, hyperlink, or other element in a graphical
user interface to help you to know the name and functions
of tools and shortcut to use them.
Unit
7 Specialist Reading (Page 50)
1.
Cheaper and more powerful personal
computers, Breakthroughs in technology, such as speech recognition, Convergence
of personal computers and consumer electronics are driving the development of
completely new interface
2. The
hyperlinked design of the World Wide Web has inspired a whole cottage industry
to develop to improve today’s graphical user interface.
3.
Speech recognitionthat arepoised to
shake up interface design.
4.
Palm-size and handledPC’s, with their
cramped keyboards and basic handwriting recognition, will benefit from speech
technology.
5.
A mouse is a particulary useful for
desktop navigation and not so useful for changing the syle of paragraph
6. Video
cameras fasiltiesare multimodal interfaces likely to offer in the future.
7. keyboard
is type of input device will be used to give vision to the user interface
8. By
internet and within intranets amount of informationat the fingertip of computer
users has been expanding rapidly has lead to an interest in intelligent agents.
9. It
can be used as Web browser, help desks, and shopping assistants.
Unit
9 Read the rest of this text to find the answer to these questions (Page 62)
1. How
do you play MP3 files ?
2. What
does the Windows Media Player program do with an MP3 file ?
Answer
: The Windows Media Player will decode the file and route the signals to my
soundcard and then to my speaker.
3. What
is a standalone player ?
Answer
: Standalone players is not a part of another device such as a PC, it run
without requiring installation first and it have many features beyond Windows’
default Media Player.
4. What
special features can players offer ?
Answer
: Players can offer special features like to control whats music you play,
player lets you group songs into playlist and randomize the selectios. To
control how the music sounds, they offer spectrum analyzers, graphic
equalizers, and frequency displays.
5. What
information can you obtain by clicking on the track info button ?
Answer
: The information can i obtain by clicking on the track info button is the information on the MP3 file’s tag: the performer’s name, a graphic such as
an album cover, the song’s
lyrics, the musical genre, and a URL for more details.
6. What does a skin enable you to do?
Answer
: Skin enale me to makes my player look like a jukebox, a car dashboard,
or a Star Trek tricorder.
7. How do you play music from a CD-ROM on an MP3
player?
Answer
: I play music from a CD-ROM on an MP3 player
by use a ripper to rip songs from a CD in my CD-ROM drive and turn them
into WAV files. And i use an
encoder to convert the WAV files into MP3 files or vice versa.
My MP3 player may incorporate both.
8.
What
hardware and software do you need to make your own audio CDs?
Answer : Hardware and software that i
need to make my
own audio CD is a writeable CD-ROM drive and a recorder program.
Unit
9 Specialist Reading (Page 66)
1. Into what two components is the data
stream split?
Answer : The data stream split
into audio and video components
2. What information does an Intra frame
contain?
Answer : The information of an Intra frame contain
Only information in the picture itself.
3. What is stored in the P-frames
following an I-frame?
Answer
: The stored in the P-frames following an I-frame is only the difference
between the P-frame and the I-frame
4.
What
is stored in a P-frame in the case of a bouncing ball?
Answer
: The stored P-frame in the case of a bouncing ball is description of how the
position of the ball has changed from the previous I-frame as well as shape or
colour changes
5. What
gives the massive reduction in the amount of information needed to reproduce a
video sequence?
Answer : That gave the massive reduction in the
amount of information needed to reproduce a video sequence are storing
differences between the frame
6.
Why
is a new I-frame used after a few P-frames?
Answer : The new
I-frame used after a few P-frames because a small margin of error creeps in
with each P-frame
7.
What
is stored in a B-frame?
Answer : In a
B-frame is stored the difference between the previous I or P-frame and the
difference between the B-frame and the following I or P-frame
8.
Why
do B-frames not propagate errors?
Answer : The
B-frames not propagate errors because no other frames are based on them
Unit 10 Describe
the effects of these actions using an if-sentence
(Page71)
1. You don’t virus–check
floppies
Answer
: If you
don’t virus–check floppies, you couldn't protect your network from virus
attacks.
2.
There was a power cut
while you were using your computer
Answer : If there was a
power cut while you were using your computer, you
will lose the data that you have not saved.
3.
You install a faster processor
Answer
: If you
install a faster processor, the performance
of your computer will be faster
4.
You forgot your password
Answer : If you forgot your password, you
will not be able to get into your account
5. You press the delete key
Answer : If you press
the delete key, you will delete the current
data
6.
You use a search engine
Answer : If you use a search engine , that will need an
internet connection
7.
You double – click on an icon
Answer : If you double – click on an icon the application
that represented by the icon will be open
8.
You use power-saving options
Answer : If you
use power saving option, that
will be longer for the computer usage but the screen brightness will be reduced
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