a certification study guide 2012

... - 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...

Ngày tải lên: 10/12/2013, 15:15

... 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. ...

Ngày tải lên: 11/12/2013, 14:15

... 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...

Ngày tải lên: 17/10/2013, 21:15

... 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....

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...

Ngày tải lên: 20/10/2013, 14:15

... 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...

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...

Ngày tải lên: 24/10/2013, 12:15

... 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...

Ngày tải lên: 28/10/2013, 19:15

... this watermark. 20 327090 Ad 1 7/16/04 8:44 AM Page 246 Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. 22 327090 Ad 3 7/16/04 8:45 AM Page 248 Please purchase PDF ... www.informit.com Your Guide to Computer Technology Sams has partnered with InformIT.com to bring technical information to your desktop. Drawing on Sams authors and reviewers to provide additional information ... 14 days free. CATALOG Review online sample chapters and author biographies to choose exactly the right book from a selection of more than 5,000 titles. www.samspublishing.com SamsInformITBM5.7x9.qxd...

Ngày tải lên: 28/10/2013, 19:15

Ngày tải lên: 25/11/2013, 11:05

Ngày tải lên: 25/11/2013, 11:05

... 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...

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...

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...

Ngày tải lên: 26/01/2014, 11:20

Ngày tải lên: 26/01/2014, 11:20

Ngày tải lên: 26/01/2014, 11:20

Ngày tải lên: 26/01/2014, 11:20