2996843
Descripción
Test por Carlos Veliz, actualizado hace más de 1 año
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Creado por Carlos Veliz
hace más de 9 años
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Pregunta 1
Pregunta
Concurrency in Java. Which is not a state of a thread?
Respuesta
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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
Pregunta 2
Pregunta
"Determines if the thread is running or not". This statement is describing:
Respuesta
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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()
Pregunta 3
Pregunta
In Java, the following methods are vulnerable to race condition:
Respuesta
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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
Pregunta 4
Pregunta
Which of the following statements is for the use of ThreadPool instead of ThreadGroup?
Respuesta
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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
Pregunta 5
Pregunta
When an object is built and then occurs: the race condition, improper initialization and leaks, it is because:
Respuesta
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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
Pregunta 6
Pregunta
Which statement is not a prevention technique DeadLock?
Respuesta
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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
Pregunta 7
Pregunta
Which of the following is not a safe practice for handling threads?
Respuesta
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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
Pregunta 8
Pregunta
Check the statement that is not a type of session hijacking attack:
Respuesta
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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
Pregunta 9
Pregunta
Indicate which are the guidelines for Secured sessions Management :
Respuesta
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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
Pregunta 10
Pregunta
"Date formats in java are not synchronized". This feature belongs to:
Respuesta
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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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