2996843
Descrição
Quiz por Carlos Veliz, atualizado more than 1 year ago
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Criado por Carlos Veliz
mais de 9 anos atrás
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Questão 1
Questão
Concurrency in Java. Which is not a state of a thread?
Responda
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Dead
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Sleeping
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Pause
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Running
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Resumed
Questão 2
Questão
"Determines if the thread is running or not". This statement is describing:
Responda
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IsAlive()
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Stop()
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isDaemon()
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run()
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start()
Questão 3
Questão
In Java, the following methods are vulnerable to race condition:
Responda
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start(), stop(), init(), wait(), pause()
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start(), stop(), time(), init(), destroy()
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notifiyAll(), notify() syncronized, java.lang.thread
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stop(), isDaemon(), getThreadGroup()
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none of the above
Questão 4
Questão
Which of the following statements is for the use of ThreadPool instead of ThreadGroup?
Responda
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Using few methods of the threadgroup class is not considered thread-safe
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Newly created thread may lead to peromance overhead
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Controlling too may threads is not easy and might result in errors in the memory
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A thread pool is a set of work queue of runnables and running thread connections
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None of the above
Questão 5
Questão
When an object is built and then occurs: the race condition, improper initialization and leaks, it is because:
Responda
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if "terminated" reference is not used
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if "exception handler" is not used
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if "this" reference is used
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if "terminated" reference is used
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if "this" reference is not used
Questão 6
Questão
Which statement is not a prevention technique DeadLock?
Responda
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DeadLock detection
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Lock Timeout
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Ordering of Locks
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Deadlock mutable
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None of the above
Questão 7
Questão
Which of the following is not a safe practice for handling threads?
Responda
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Use join() method
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Setting priorities for threads
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Ordering of Locks
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Avoid publishing "this" reference during construction
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Document the order
Questão 8
Questão
Check the statement that is not a type of session hijacking attack:
Responda
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User enumeration
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Stealing Session ID through HTTP Get request
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Attack using Client-Side Scripting
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Session Fixation
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Attack through HTTP Header response
Questão 9
Questão
Indicate which are the guidelines for Secured sessions Management :
Responda
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Password Strength
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Password Storage
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Password Use
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Browser Caching
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All of the above
Questão 10
Questão
"Date formats in java are not synchronized". This feature belongs to:
Responda
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Race condition prevention
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DateFormat in multi-threaded environment
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Use join() method
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Document the order
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Setting priorities for threads
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