CS_24_MCQ

What is a key requirement for packets that travel over the internet?

1. Must be sent in a specific order.17%
2. Must be routed through a specific path.31%
3. Must be small enough to fit in the send buffer.24%
4. Must contain a unique identifier.29%

Shares as published, totalling 101%. No per-option vote count is published by Telegram, so none is shown.

In Decorator Pattern, What can be concluded if there is only one class of components?

1. a) The IComponent interface is essential for structure.10%
2. b) Decorators should inherit directly from the Component class.71%
3. c) Multiple component classes are required for flexibility.13%
4. d) The IComponent interface must be modified.6%

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Which of the following is not a parameter of FileStream.BeginRead()?

1. Buffer12%
2. Current52%
3. Count20%
4. Callback16%

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Which file share member can decline sharing of the current file?

1. Read9%
2. Write0%
3. Read/Write47%
4. None44%

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What is the purpose of the Primary Callback delegate in asynchronous operations?

1. To represent a method called upon completion of an asynchronous operation.96%
2. To handle file closure operations.0%
3. To initiate synchronous operations.4%
4. To manage UI updates.0%

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In the `FileStream.BeginRead` method, what does the `callback` parameter represent?

1. The buffer to store the read data0%
2. The number of bytes to be read from the stream60%
3. A method to be called when the read operation completes40%
4. An object containing state information for the request0%

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Why can't you always use the `Seek` method on a stream?

1. Because the `Seek` method is often very slow9%
2. Because some streams, like `NetworkStream`, don't support it73%
3. Because you must have write access to use `Seek`9%
4. Because the file must be smaller than 1MB to use `Seek`9%

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What is the main benefit of "shallow serialization" using `XmlSerializer`?

1. It is much faster than deep serialization0%
2. It uses a standard XML Schema (XSD) for cross-platform compatibility83%
3. It includes private and protected members of the object0%
4. It can handle circular references between objects17%

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How do you write a primitive integer to a stream in its compact binary format?

1. Using `StreamWriter.Write(myInt)`15%
2. Using `BinaryWriter.Write(myInt)`69%
3. Using `File.WriteAllBytes(myInt)`0%
4. Using `TextWriter.WriteLine(myInt)`15%

Shares as published, totalling 99%. No per-option vote count is published by Telegram, so none is shown.

What is the purpose of the `DataSet` object when reading from a database?

1. To establish the initial connection to the database23%
2. To hold the results of a database query in memory62%
3. To execute an SQL command against the database8%
4. To serialize the connection string for later use8%

Shares as published, totalling 101%. No per-option vote count is published by Telegram, so none is shown.

What does the `StreamReader.Peek()` method do?

1. It reads the next character and advances the stream0%
2. It returns the next character without consuming it69%
3. It returns the total number of characters in the stream31%
4. It skips the next character in the stream0%

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