Exam 70-515 VCE

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Microsoft Web Applications Development w/Microsoft .NET 70-515
Exam Number/Code : 70-515
Exam Name : Web Applications Development w/Microsoft .NET
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Questions and Answers : 193Q&As
Update Time : 2013-8-20
Price :$79.00

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QUESTION 1
You are implementing an ASP.NET application that includes the following requirements.
Retrieve the number of active bugs from the cache, if the number is present.
If the number is not found in the cache, call a method named GetActiveBugs, and save the result under the ActiveBugs cache
key.
Ensure that cached data expires after 30 seconds.
You need to add code to fulfill the requirements.
Which code segment should you add?
A.int? numOfActiveBugs = (int?)Cache["ActiveBugs"];
if (!numOfActiveBugs.HasValue)
{
int result = GetActiveBugs();
Cache.Insert(“ActiveBugs”, result, null,
DateTime.Now.AddSeconds(30), Cache.NoSlidingExpiration);
numOfActiveBugs = result;
}
ActiveBugs = numOfActiveBugs.Value;
B.int numOfActiveBugs = (int) Cache.Get(“ActiveBugs”);
if (numOfActiveBugs != 0)
{
int result = GetActiveBugs();
Cache.Insert(“ActiveBugs”, result, null,
DateTime.Now.AddSeconds(30), Cache.NoSlidingExpiration);
numOfActiveBugs = result;
}
ActiveBugs = numOfActiveBugs;
C.int numOfActiveBugs = 0;
if (Cache["ActiveBugs"] == null)
{
int result = GetActiveBugs();
Cache.Add(“ActiveBugs”, result, null, DateTime.Now.AddSeconds(30), Cache.NoSlidingExpiration,
CacheItemPriority.Normal, null);
Cache.NoSlidingExpiration, CacheItemPriority.Normal, null);
numOfActiveBugs = result;
}
ActiveBugs = numOfActiveBugs;
D.int numOfActiveBugs = (int?)Cache["ActiveBugs"];
if (!numOfActiveBugs.HasValue)
{
int result = GetActiveBugs();
Cache.Insert(“ActiveBugs”, result, null,
Cache.NoAbsoluteExpiration, TimeSpan.FromSeconds(30));
numOfActiveBugs = result;
}
ActiveBugs = numOfActiveBugs.Value;
Answer: A