Hands-On Ethical Hacking And Network Defense

In the Perl programming language, which of the following keywords is used in front of function names?

sub

Writing programs in this language is easier than in machine language.

Assembly language

Which of the following takes you from one area of a program (a function) to another area?

Branching

Which of the following is a mini-program within a main program that carries our a task?

Function

Which of the following is a markup language rather than a programming language?

HTML

Documentation of a program should include which of the following? (Choose all that apply.) a. author b. date written c. explanation of complex algorithms. d. modifications to the code

a. author b. date written c. explanation of complex algorithms. d. modifications to the code

Before writing a program, many programmers outline it first by using which of the following? a. pseudocode b. machine code c. assembly code d. assembler code

a. pseudocode

A C program must contain which of the following? a. name of the computer programmer b. a main ( ) function c. The #include <std.h> header file d. a description of the algorithm used

b. a main ( ) function

A way of having your program repeat an action a certain number of times.

while loop

Which of the following statements in the C programming language is used to load libraries that hold the commands and functions used in your program?

# include

In the Perl programming language, variables begin with which of the following characters?

$

Which of the following mathematical operators in the C programming language increments the unary value by 1?

++

Which of the following logical operators in the C programming language is used to compare the equality of two variables?

==

In the C programming language, which of the following show were a block of code begins and ends?

Braces

Takes you from one area of a program (a function) to another area.

Branching

Carelessly reviewing your program's code might result in having which of the following in your program code?

Bug

The print command for Perl is almost identical to the print command used in which of the following programming languages?

C

In the C programming language, which variable type holds the value of a single letter?

Char

You can use the syntax /* and */ to accomplish what function when working with large portions of text?

Comment

HTML files must be compiled before users can see the resulting Web pages. True of False?

False

In the Perl program, to go from one function to another, you simply call the function by entering which of the following in your source code?

Name

An English-like language you can use to help create the structure of your program.

Psuedo code

In object-oriented programming, classes are defined as the structures that hold data and functions. (T/F)

True

Most programming languages have a way to branch, loop, and test. (T/F)

True

Perl and C are the most widely used programming languages among security professionals. T/F

True

When a compiler finds errors, it usually indicates what they are so you can correct the code and compile the program again. (T/F)

True

Most programming languages enable programmers to perform which of the following actions? (choose all that apply) a. branching b. testing c. faulting d. looping

a. branching b. testing d. looping

What are the three looping mechanisms in C? (choose all that apply) a. for loop b. while loop c. if-then-else loop d. do loop

a. for loop b. while loop d. do loop

What is the result of running the following C program? main () { int a = 2; if (a = 1) printf ("I made a mistake!") ; else printf ("I did it correctly!") ; } a. "Syntax error: illegal use of ;" is displayed b. "I made a mistake!" is displayed c. "Syntax error: variable not declared" is displayed d. "I did it correctly!" is displayed

b. "I made a mistake!" is displayed

Which of the following HTML tags is used to create a hyperlink to a remote Web site? a. <A HREF=http://URL> b. <A HREF="http://URL"> c. <A HREF="file:///c:/filename> d. <A HREF/>

b. <A HREF="http://URL">

To add comments to a Perl script, you use which of the following symbols? a. / / b. / * c. # d. < ! --

c. #

Which of the following is the Win32 API function for verifying the file system on a Windows computer? a. Filesystem ( ) b. FsType ( ) c. System ( ) d. IsNT ( )

c. FsType ( )

In C, which looping function performs an action first and then tests to see whether the action should continue to occur? a. for loop b. while loop c. do loop d. unless loop

c. do loop

Program that converts a text-based program called source code, into executable or binary code.

compiler

In the C programming language, which statement tells the compiler to keep doing what is in the brackets over and over and over?

for (; ;)

In object-oriented programming, a function contained in a class is called which of the following?

member function

If you want to know what the Perl print command does, you can use which of the following commands?

perldoc -f print

An error that causes unpredictable results.

Bug

You must always add "//" at the end of comment text when using C language. (T/F)

False

Which of the following tags enables an HTML programmer to create a loop? a. <LOOP> b. <NEST> c. <WHILE> d. HTML doesn't have a looping function or tag

d. HTML doesn't have a looping function or tag

Performs an action first and then tests to see whether the action should continue to occur.

Do Loop

Which of the following is the act of performing a task over and over?

Looping

Represents a numeric or string value.

Variable

Which of the following special characters is used with the printf() function in the C programming language to indicate a new line?

\n

A missing parenthesis or brace might cause a C compiler to return which of the following? a. system fault b. interpreter error c. syntax error d. machine-language fault

c. syntax error

Using the following Perl code, how many times will "This is easy..." be displayed onscreen? for ($count=1; $count <= 5; $count++) { print "This is easy..."; } a. 6 b. 4 c. none (syntax error) d. 5

d. 5

Which of the following C statements has the highest risk of creating an infinite loop? a. while (a > 10 ) b. while (a < 10 ) c. for (a = 1; a < 100; ++a) d. for (; ;)

d. for (; ;)

Security professionals often need to examine Web pages and recognize when something looks suspicious. (T/F)

True

An object-oriented programming structure that holds pieces of data and functions.

class

In the Perl programming language, comment lines begin with which of the following characters(s)?

#

Which of the following logical operators in the C programming language is evaluated as true if both sides of the operator are true?

&&

List three logical operators used in C programming.

AND, OR, NOT

UNIX was first written in assemble language. However, it was soon rewritten in what programming language?

C

Which of the following is a backdoor initiated from inside the target's network that makes it possible to take control of the target even when its behind a firewall?

Reverse Shell

In HTML, each tag has a matching closing tag that is written with which of the following characters?

forward slash (/)

In object-oriented programming, which of the following are structures that hold pieces of data and functions?

classes

Tells the compiler how to convert the value in a function.

Conversion Specifier

Name two looping mechanisms use in Perl.

for loop while loop

Bugs are worse than syntax errors because a program can run successfully with a bug, but the output might be incorrect or inconsistent. (T/F)

True

An Algorithm is defined as which of the following? a. a list of possible solutions for solving a problem b. a method for automating a manual process c. a program written in a high-level language d. a set of instructions for solving a specific problem

d. a set of instructions for solving a specific problem