Latest MCSD 70-483 Dumps Real Exam Download Chapter 4 1-10

Ensurepass

QUESTION   1

You are creating a new file to store some log data. Each time a new log entry is necessary, you write a string to the file. Which method do you use?

 

A. File.CreateText

B. FileInfo.Create

C. File.Create

D. File.AppendText

 

Correct Answer: D

 

 

QUESTION   2

You have built a complex calculation algorithm. It takes quite some time to complete and you want to make sure that your application remains responsive. What do you do?

 

A. Use async/await.

B. Run the code synchronously.

C. Use Task.Run.

D. Use a BackgroundWorker.

 

Correct Answer: C

 

 

QUESTION   3

You are writing an application that will be deployed to Western countries. It outputs user activity to a text file. Which encoding should you use?

 

A. UTF-8

B. UTF-7

C. ASCII

D. UTF-32

 

Correct Answer: A

 

 

clip_image002

 

 

QUESTION   5

You are planning to build an application that will use an object-oriented design. It will be used by multiple users at the same time. Which technology should you use?

 

A. XML files

B. Entity Framework

C. ADO.NET

D. Web service

 

Correct Answer: B

 

 

QUESTION   6

You need to process a large number of XML files in a scheduled service to extract some data. Which class should you use?

 

A. XmlReader

B. XmlDocument

C. XmlWriter

D. FileStream

 

Correct Answer: A

 

 

QUESTION   7

You have a list of dates. You want to filter the dates to the current year and then select the highest date. Which query do you use? (Choose all that apply.)

 

A. DateTime result = dates.Where(d => d == DateTime.Now).OrderBy(d => d).First();

B. DateTime result = dates.Where(d => d.Year == DateTime.Now.Year).OrderByDescending(d => d).FirstOrDefault();

C. DateTime result = dates.Where(d => d.Year == DateTime.Now.Year).OrderByDescending(d => d).First ();

D. DateTime result = dates.Where(d => d.Year == DateTime.Now.Year).OrderByDescending(d => d).Single();

 

Correct Answer: BD

 

 

QUESTION   8

You are trying to use a LINQ query, but you are getting a compile error that the Where method cannot be found. What should you do? (Choose all that apply.)

 

A. Add a using System.Linq statement.

B. Check that you are using a type that implements IEnumerable.

C. Change your query from query to method syntax.

D. Change the type of your query to var.

 

Correct Answer: AB

 

QUESTION   9

You are using the following LINQ to Entities query:

var query = from p in myContext.Products

where p.Price < 50

select p; int numberOfItems = query.Count(); var products = query.ToList();

You are suffering performance problems. How can you improve your query? (Choose all that apply.)

 

A. Avoid hitting the database multiple times.

B. Don’t execute ToList() on the query.

C. Use paging.

D. Change the query to method syntax.

 

Correct Answer: AC

 

QUESTION   10

You need to store a large amount of data, and you want to do this in the most optimal way. Which serializer should you use?

 

A. XmlSerializer

B. BinaryFormatter

C. DataContractSerializer

D. DataContractJsonSerializer

 

Correct Answer: B

 

 

Download Latest MCSD 70-483 Real Free Tests , help you to pass exam 100%.