070-536 Real Exam Prep DEMO

Question 19: You are writing a method to compress an array of bytes. The array is passed to the method in a
parameter named document.
You need to compress the incoming array of bytes and return the result as an array of bytes.
Which code segment should you use?
A. MemoryStream strm = new MemoryStream(document);
DeflateStream deflate = new DeflateStream(strm,
CompressionMode.Compress);
byte[] result = new byte[document.Length];
deflate.Write(result,0, result.Length);
return result;
B. MemoryStream strm = new MemoryStream(document);
DeflateStream deflate = new DeflateStream(strm,
CompressionMode.Comress);
deflate.Write(document, 0, document.Length);
deflate.Close();
return strm.ToArray();
C. MemoryStream strm = new MemoryStream();
DeflateStream deflate = new DeflateStream(strm,
CompressionMode.Compress);
deflate.Write(document, 0, document.Length);
deflate.Close();
return strm.ToArray();
D. MemoryStream inStream = new MemoryStream(document);
DeflateStream deflate = new DeflateStream(inStream,
CompressionMode.Compress);
MemoryStream outStream = new MemoryStream();
int b;
while ((b = deflate.ReadByte()) != -1)
{
outStream.WriteByte((byte)b);
}
return outStream.ToArray();
Correct Answer: C