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Basic C# .Net Quiz 2

Description: Basic C# Quiz 2
Number of Questions: 15
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Tags: .net c-sharp
Attempted 0/15 Correct 0 Score 0

To output the value of multidimensional array, Console.WriteLines(___)

  1. myArray[1][3];

  2. myArray[1,3];

  3. myArray{1}{3};

  4. myArray(1),(3);

Correct Option: B

All methods in an abstract base class must be declared abstract.

  1. True

  2. False

Correct Option: B

Methods that are declared abstract in the base class must show implementation at the time of declaration.

  1. True

  2. False

Correct Option: B

The code public class B : A { }

  1. Defines a class that inherits all the methods of A

  2. Defines a class that inherits the public and protected methods of A only

  3. Errors

  4. a and b

Correct Option: B

Assuming that public class B : A { public B(int i) :base(i) { } } compiles and runs correctly, what can we conclude about the constructors in the class A?

  1. One constructor takes an argument of type i

  2. There is only a default constructor

  3. One constructor takes an arguments of the type int

  4. a and b

Correct Option: C

A Thread is:

  1. an object that allows computer multitasking

  2. an object that wraps itself with other threads

  3. a deprecated object that is no longer used

Correct Option: A

Synchronization is:

  1. the delaying of a thread until there is sufficient memory and work to keep it up

  2. making every thread start and end at the same time

  3. make each thread do the same thing

  4. have each thread start at the same time but not necessarily finish together

  5. wait until the required resources, that are used by other threads become available

Correct Option: E

In C# Thread.Sleep(time) measures time in:

  1. seconds

  2. milliseconds

  3. nanoseconds

  4. all of the above

Correct Option: B

When a thread returns from a WaitSleepJoin or Suspended state it returns to the:

  1. Unstarted state

  2. Stopped state

  3. Started state (now considering a part of the running state)

  4. Resume state

Correct Option: C

The ThreadPriority enumeration does not contain:

  1. Lowest

  2. Highest

  3. BelowNormal

  4. None of the above

Correct Option: D

String indexers treat strings as:

  1. binary code

  2. 1 to string Length

  3. arrays of characters

  4. a character

Correct Option: C

If an IndexofAny method is passed an array of characters it:

  1. finds the first occurrence of each letter in the string

  2. searches for the first occurrence of any of the characters in the string

  3. will search for the first occurrence of the sequence of characters

  4. generates an error

Correct Option: B

Concatenating with strings are done with:

  1. reserved words

  2. method calls

  3. operator overloading

  4. operator overloading and method calls

Correct Option: D

If two StringBuilder objects contain the same string then

  1. they represent the same meory location

  2. the are two different objects

  3. if one changes, so will the other

  4. None of the above

Correct Option: B

The proper way to convert a string to all lowercase is:

  1. String = string.ToLower(string);

  2. ToLower(string);

  3. string.ToLower();

  4. string.ToLower(string);

Correct Option: C
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