2996843
Description
Quiz by Carlos Veliz, updated more than 1 year ago
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Created by Carlos Veliz
about 9 years ago
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Question 1
Question
Concurrency in Java. Which is not a state of a thread?
Answer
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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
Question 2
Question
"Determines if the thread is running or not". This statement is describing:
Answer
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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()
Question 3
Question
In Java, the following methods are vulnerable to race condition:
Answer
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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
Question 4
Question
Which of the following statements is for the use of ThreadPool instead of ThreadGroup?
Answer
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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
Question 5
Question
When an object is built and then occurs: the race condition, improper initialization and leaks, it is because:
Answer
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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
Question 6
Question
Which statement is not a prevention technique DeadLock?
Answer
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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
Question 7
Question
Which of the following is not a safe practice for handling threads?
Answer
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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
Question 8
Question
Check the statement that is not a type of session hijacking attack:
Answer
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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
Question 9
Question
Indicate which are the guidelines for Secured sessions Management :
Answer
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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
Question 10
Question
"Date formats in java are not synchronized". This feature belongs to:
Answer
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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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