a certification study guide
Tài liệu Troy Technologies USA_ A+ CERTIFICATION STUDY GUIDE Core Exam doc
Ngày tải lên :
10/12/2013, 15:15
... - Hard drives store data in circular paths on each platter surface (Head). These paths are called
tracks. There are hundreds of circular tracks on each Head. Starting from the inner most track, ... Language) HP’s own hardware dependent printer language.
Postscript PDL (Page Description Language)
A hardware independent language capable of high
resolution graphics.
37
A: Printhead
297: What ... two)
A: Assure that you and the PC are at the same electrical charge level
Use anti-static spray liberally
2
Memory
Random Access Memory (RAM)
- The working area of your PC where programs are...
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Tài liệu Troy Technologies USA A+ certification study guide pdf
Ngày tải lên :
11/12/2013, 14:15
... RAM and what?
A: A swap file
445.
Memory that is paged out to the hard drive is known as what?
A: virtual memory
Congratulations!!
You have purchased one of the Troy Technologies USA Study Guides.
This ... AUTOEXEC.BAT?
A: DOSKEY
40.
Which allows faster access; RAM, ROM, or virtual memory?
A: RAM
41.
What batch file command will stop a batch file operation until a key is pressed?
A: PAUSE
42.
What ... following is a proper DOS filename?
A: !RONNY.EXE
362.
A Win 3.x system has a lot of hard drive space, what can you do to optimize it?
A: Make a permanent swap file and let Windows manage it.
363.
...
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Zend PHP Certification Study Guide- P8
Ngày tải lên :
17/10/2013, 21:15
... this watermark.
133
Formatting an Email Message
Managing Email Headers
Email headers are lines of text that go at the start of an email message. Headers hold
information used by MTAs and MUAs. ... will
not automatically download anything that’s referenced in an HTML email.
If you want to add images to your email, you need to use attachments.
Attaching a File to a Message
To attach a file to an ... datestamp.
B.
date()
returns a formatted date string.
C.
date()
requires a time stamp to be passed to it.
D.
date()
returns a date array.
The correct answers are A, C, and D.
date()
takes a format string and an optional
time...
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Zend PHP Certification Study Guide- P9
Ngày tải lên :
20/10/2013, 14:15
... stream has a transport,
perhaps a file wrapper, one or two pipelines, and perhaps a context. PHP also maintains
metadata about the stream.
What Is Stream Metadata?
Stream metadata is data about ... and aggregating data
n
Using transactions
n
Escaping user input
n
Managing dates
“Databasics”
Most modern general-purpose DBMSs belong to a family known as “relational databas-
es.” In a relational ... think of a bank that must update your account informa-
tion—stored in a table that contains your actual financial operations and another one in
which your account balance is stored—after a deposit....
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Zend PHP Certification Study Guide- P10
Ngày tải lên :
20/10/2013, 14:15
... practices is particularly
important?
A. Initialize all variables.
B. Filter all foreign data.
C. Escape all data used in SQL statements.
D. Escape all data prior to output.
Answer A is correct.Answers ... prepare data so that it can be used as a single argument in a shell com-
mand.
B. To remove malicious characters.
C. To escape metacharacters, so that they can’t be used to execute arbitrary
commands.
D. ...
register_globals
and escaping any data used in the construction
of the SQL statement.
Answer C is correct.With properly filtered data, escaping any metacharacters that
remain can mitigate the remaining...
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Zend PHP Certification Study Guide- P11
Ngày tải lên :
24/10/2013, 12:15
... watermark.
195
Database Optimizations
Zip It Up
HTML is a very verbose language. As a result, web pages are often rather large—
although maybe not as large as, say, a video or audio stream. Still, even a 20KB ... are available in the United States and Canada from 7:00 a. m. to
7:00 p.m. (Central Time), Monday through Friday. Non-U.S. call centers are available in
the Asia-Pacific, Europe, Middle East, and ... performing that opera-
tion again.
There are several types of cache; for example, you can save the results of a database
query, or even an entire web page.The latter means that you generate your pages...
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Zend PHP Certification Study Guide- P12
Ngày tải lên :
24/10/2013, 12:15
...
escapeshellarg()
function?
A. Removing malicious characters.
B. Escaping malicious characters.
C. Creating an array of arguments for a shell command.
D. Preparing data to be used as a single argument ... by
which a particular interface is accessed.
The PHP API refers to the catalog of
procedures and functions available for use
from a userspace script.
Associative Arrays An array indexed
by associative ... or
more SQL statements that are to be
committed to a database engine as a sin-
gle atomic operation.Transactions help
ensure data integrity by guaranteeing that
either all, or none, of a given set...
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Zend PHP Certification Study Guide- P13
Ngày tải lên :
28/10/2013, 19:15
... 62-63
array_change_key_case( ), 74
array_diff( ), 85
array_diff_assoc( ), 85
array_intersect, 84-85
array_keys( ), 72
array_keys_exists( ), 73
array_merge, 82-84
array_multisort( ), 78-81
array_rand( ... 178
whitelist approach, 178
database administrators (DBAs), indices
optimization, 147
database management servers. See
DBMSs
databases
data impurities, 153-154
date handling, 154
escape sequences, 153-154
indices
foreign ... watermark.
226
assigning
assigning
values to elements via array operator ([ ]),
64
variables by reference, 38-42
assignment operator, 14
associativity in operators, 19-20
attachments (email)
images, sending...
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Zend PHP Certification Study Guide- P14
Ngày tải lên :
28/10/2013, 19:15
... this watermark.
20 327090 Ad 1 7/16/04 8:44 AM Page 246
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22 327090 Ad 3 7/16/04 8:45 AM Page 248
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Tài liệu Zend PHP Certification Study Guide- P1 ppt
Ngày tải lên :
26/01/2014, 11:20
... Array 65
Assigning Values from an Array to Multiple
Variables 65
Multidimensional Arrays 66
Navigating Arrays 68
Using foreach 69
Using the Internal Pointer 70
Using a Callback 71
Manipulating ... watermark.
viii
Contents
Getting a Date Array 117
Formatting a Date String 119
Getting a UNIX Time Stamp from a Date Array 123
Getting A UNIX Time Stamp from a String 123
Exam Prep Questions 124
8 Managing Email 127
Introduction ... 133
Basic HTML Emails 134
Attaching a File to a Message 135
Attached Images for HTML Emails 137
Using Extra Command-Line Parameters 139
A Word About Email Delivery 139
Further Reading 140
Exam...
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Tài liệu Zend PHP Certification Study Guide- P2 ppt
Ngày tải lên :
26/01/2014, 11:20
... computer language, PHP provides a facility known as a “vari-
able” capable of containing data. PHP variables can contain one value at a time
(although that value could, for example, be an array, which ... propagating to a default handler because you have a specialized code
segment that you want to take care of the problem. Generally speaking, it’s a bad idea to
use this approach simply as a way ... contain text—say, for example,
a user’s first and last name—but it could also contain arbitrary binary data, such as the
contents of a JPEG image of a MIDI file.
String values can be declared...
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Tài liệu Zend PHP Certification Study Guide- P3 docx
Ngày tải lên :
26/01/2014, 11:20
... object.
Classes as Namespaces
After a class is defined, its methods can be accessed in one of two ways: dynamically, by
instatiating an object, or statically, by treating the class as a namespace. ... of data and code ele-
ments that share common traits inside a container known as a class. Classes can be organ-
ized hierarchically so that any given one can inherit some or all the characteristics ... $this->method().
Instantiating a Class: Objects
You cannot use a class directly—it is, after all, nothing more than the declaration of a
special kind of data type.What you must do is to actually instantiate it and...
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