CS 3305 - Web Programming 2

What is the risk in performance of an Internet system?

Customers will not use a slow performing system

What does the "$" symbol do in PHP?

Defines variables

What is the most common protocol on the Internet?

HTTP (HyperText Transfer Protocol)

Which character is used for string concatenation in PHP?

"."

What do "/*" & "*/"; "//"; and "#" delimiters do in PHP?

They comment everything in between or after them.

What is "$_GET[];" used for in PHP?

To get information from a form that was submitted using the "get" method.

Social networks are part of which Internet era?

Web 2.0

What technology allows caching of PHP scripts?

* APC (Alternative PHP Cache) * Memcache

What is the most common extension for a source code package?

.tgz

What type of parameter is required in the PHP function "mysql_query();", which issues a command or query to the database?

A string parameter

Basic Authentication is a module in Apache, which allows administrators to require a password on a specific URL. Where should this module be used?

Administrator section of an application

Readability and Maintainability are examples of:

Advantages of scripted applications over compiled applications

Perl is an example of:

Server-side programming language

TRUE/FALSE: A Content Delivery Network, CDN, is used to distribute static assets such as images, documents, CSS and JavaScript across many locations.

TRUE

TRUE/FALSE: Apache is called httpd on a Linux server.

TRUE

TRUE/FALSE: In PHP all statements end with a semicolon ";"

TRUE

TRUE/FALSE: In PHP you can use both single quotes ( ' ' ) and double quotes ( " " ) for strings.

TRUE

TRUE/FALSE: Most of the web sites today are Web 2.0.

TRUE

TRUE/FALSE: PHP can generate PDF files based on database data, which is useful in creating reports.

TRUE

TRUE/FALSE: PHP generated PDF files can use custom fonts.

TRUE

TRUE/FALSE: Resizing the images with a server-side function will improve the performance of the CMS.

TRUE

TRUE/FALSE: Server-side programming allows users to login to web sites and generate content each time the page is visited.

TRUE

TRUE/FALSE: Server-side programming uses some of the same languages as client-side (workstation) programming.

TRUE

TRUE/FALSE: Software can be compiled at the command prompt.

TRUE

TRUE/FALSE: The PHP syntax is similar to many languages including C++ and Java, which makes it easy to learn for programmers.

TRUE

What is the advantage of caching?

Temporary storage of calculated data makes delivery faster

How can the speed of writing server code be increased?

When the developer receives immediate feedback upon making changes.

What are the functions of a PHP script?

a. Generate an email to one or more receipients. b. Insert data into a database c. Display data from a database

What information is needed when installing online applications on a PHP server?

a. database username b. database password c. database host name

Given that a database table has a field called FirstName, which code displays an element or field from the database record?

echo $row['FirstName'];

How are functions created in PHP?

function myFunction()

What parameters are needed to connect to a database?

host name and user

What PHP function allows a connection to MySQL database?

mysql_connect();

Which PHP function issues a command or query to the database?

mysql_query();

What PHP function sets the database name to be used out of all the databases installed on the given server?

mysql_select_db();

What function can you use to get the position of a string or character inside a string?

strrpos();

PHP means

Hypertext PreProcessor

Web 2.0

Internet technologies that support user collaboration and data exchange.

What does the "nano" command do on a Linux server?

It can be used to edit a text file on a Linux server.

What does the "cd" command do?

It changes current directory

What does the "make" command do?

It compiles the source code

What does the "tar -xzvf" command do?

It extracts a tarball archive file

What does the "$count++;" statement do?

It increments the value of the variable $count by 1

What does the "make install" command do?

It installs compiled code

What does the "wget" command does?

It is a Linux command that downloads source code.

What does the "--prefix=$HOME/apache" command do?

It is a configuration parameter that determines the location of a new software.

MySQL is an example of:

Open source database

Which 2 other programming languages is PHP syntax the most similar to?

Perl and C

PHP & Perl are examples of:

Scripted languages

putty.exe

A program that can be used on a Windows computer to access a command prompt on a Unix/Linux server.

Varnish is an example of:

An anonymous users reverse proxy cache

Weakly typed languages

Allows more flexibility when managing data because there's no need to define variable types before they are initialized

In the statement "$row=mysql_fetch_array($r);" what type of variable is $row?

An array()

osCommerce is an example of:

An open source shopping cart PHP application

Why is SSL required when accepting credit card transactions on a web site?

Because credit card companies implemented PCI

How can static content on the Internet can be updated?

By logging in and updating a page

"Is" and "Make" are examples of:

Commands that can be used on a Linux server

CMS

Content Management System which are systems that allow efficient web site management

"<PHP" and "?>"

Delimits the PHP code from the HTML code on a document. The set of tags for PHP code.

PHP "echo" statement

Displays the output to the screen.

a. CNN news page b. Yahoo home page c. Facebook Wall d. Any webpage which content changes per visit are all examples of:

Dynamic internet content

TRUE/FALSE: PHP cannot generate images, which are different each time a user visits the page.

FALSE

TRUE/FALSE: Playing a video online is an example of dynamic content on the Internet.

FALSE

TRUE/FALSE: Source code can be executed.

FALSE

TRUE/FALSE: When using the POST method, variables are displayed in the URL.

FALSE