Java - Mix

Carlos Veliz
Quiz by Carlos Veliz, updated more than 1 year ago
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Java - Mix
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Question 1

Question
Indicate which of the statements is the one that corresponds to input validation stored procedures ?.
Answer
  • Determines whether the input is given by a real user or a computer program
  • This tecniques is used to prevent the client applications from manipulating the contents of server data
  • Prepared statements support parameterized queries that prevent SQL injection
  • Increased performance of the code in case of repeated SQL statements

Question 2

Question
In character encoding, one of the following is not a rule for validation of input data
Answer
  • Each character is passed dynamically to the encoding function
  • Limit exact matches
  • Accept desirable known
  • Sanitize known undesirable matches
  • Reject known undesirables

Question 3

Question
It is not a principle to implement in code when you want to validate with Struts Validator
Answer
  • Implements struts validator class
  • Check for similar number de fields in Action Form and Validation Form
  • Struts validation is done to prevent attacks caused through unchecked input
  • Avoid duplicate validation forms int he validation xml file
  • Enable the Struts Validator in the action form mapping

Question 4

Question
In regular expressions, the following expression "(0-9 && (^ 4 5 6 7)" corresponds to:
Answer
  • A Single digit 0, 1, or 9
  • Any digit number from 0 -9
  • A single digit that is 4, 5 , 6, or 7
  • A single character that is either a lowercase letter or a digit
  • A single digit that is 0, 1, 2, 3, 8, or 9

Question 5

Question
Which of the following statements is not a technique for data validation?
Answer
  • Encode Known Bad
  • Known Good
  • Reject Known bad
  • Accepting Exact Match
  • Accept any unknown

Question 6

Question
That considerations should know to implement Servlet filters. Check the wrong choice
Answer
  • input validation through servlet filters in Java web application is effective due to minor modifications needed for input validation and servlets filters not are centralized in nature
  • Input validation in servlets is through multipart encoded content by handling multipart requests
  • Modern frameworks facilitate to provide input validation in the application itself
  • Servlet can be configured on an application if it does not require multipart request where automatic multipart request should be disabled
  • Application should rely only on one of defense.

Question 7

Question
Not a member of the superclass InputStream java.io package
Answer
  • ByteArrayInputStream
  • FileInputStream
  • FilterInputStream
  • InputStream
  • ObjectInput

Question 8

Question
Select the correct statement about Reader Class:
Answer
  • Writer class is the base class of all the java IO Writer APIs
  • Subclasses include PrintWriter, BuferedWriter, etc
  • Subclasses include PushbackReader, BufferedReader, etc
  • Subclasses include StreamReader, PrintReader, etc

Question 9

Question
To prevent exposure of buffers used by untrusted code:
Answer
  • getbuffercopy()
  • CharBuffer.wrap(data_array)
  • CharBuffer.wrap(data_array).asReadOnlyBuffer()
  • BufferedInputStream(system.input_strm)

Question 10

Question
Indicate which of the following statements is not a baseline for designing secured software:
Answer
  • Reduce the number of persons while granting the high privileges
  • Use only trusted interfaces to reduce the exposure of the data passed between software and its environment
  • Avoid having multiple subjects sharing mechanisms to grant access to a resource
  • Reduce the amont of time on holds onto its privileges
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