Tag: technology

Questions Related to technology

Which command is used to create recursive directories.
technology operating systems

  1. mkdir -p x/y x/y/z

  2. mkdir -r x/y x/y/z

  3. mkdir x x/y x/y/z

  4. mkdir -x x/y x/y/z

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Correct Option: A,C

Dictionary is the super class of Hashtable

technology web technology

  1. True

  2. False

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Correct Option: A

Applet is a program which can get downloaded into a client environment and start executing there.

technology web technology

  1. True

  2. False

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Correct Option: A

java.lang are the implicit packages that need not get imported into a class file
technology web technology

  1. True

  2. False

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Correct Option: A

An interface with no methods.Example: Serializable, Remote, Cloneable are called Marker Interfaces
technology web technology

  1. True

  2. False

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Correct Option: A

Comparable interface needs to be implemented to do the sorting
technology web technology

  1. True

  2. False

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Correct Option: A

Any object can be cloned

technology web technology

  1. True

  2. False

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Correct Option: B

hashCode is unique for every object

technology web technology

  1. True

  2. False

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Correct Option: A

Thread is a block of code which can execute concurrently with other threads in the JVM.
technology web technology

  1. True

  2. False

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Correct Option: A

Two different keys with the same hash value is hash-collision in Hashtable.Two different entries will be kept in a single hash bucket to avoid the collision.
technology web technology

  1. True

  2. False

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Correct Option: A