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NO.1 You are developing a WCF service. A new service instance must be created for each client
session. You
need to choose an instancing mode. Which instance mode should you use?
A. Single
B. Multiple
C. PerSession
D. PerRequest
E. PerCall
Answer: C

NO.2 You need to recommend a data access technology to the contractor to retrieve data from the
new data
source. Which data access technology should you recommend?
A. ADO.NET DataSets
B. LINQ to XML
C. ADO.NET Entity Framework
D. WCF Data Services
Answer: D

NO.3 The GetVendors() action in the ProcessedOrderController controller is querying the database
each time
it is run. The GetVendors() action must query the database only if the cache is null. You need to add
code
to the action at line PC33 to cache the data. Which code segment can you use? (Each correct
answer
presents a complete solution. Choose all that apply.)
A. cache.Set(new CacheItem("vendorKey", vendors), GetVendorPolicy());
B. cache.Add("vendors", vendors, new CacheItemPolicy());
C. cache.Add(new CacheItem("vendorKey", vendors) , GetVendorPolicy());
D. cache.AddOrGetExisting("vendorKey", context, new CacheItemPolicy());
Answer: AC

NO.4 The GetExternalOrder() method in the ExternalQueueService service is throwing a runtime
error. The
method must query the database for a record that matches the orderNum parameter passed to the
method. You need to modify the queryString string to retrieve the record. With which code segment
should
you replace line EQ64
A. string queryString = @"SELECT * FROM ExternalOrdersEntities.InboundQueuesWHERE OrderNum
=
@orderNum";
B. string queryString = @"SELECT q.OrderNum, q.VendorId, q.FilePath, q.OrderValueFROM
ExternalOrdersEntities.InboundQueues AS q WHERE q.OrderNum = @orderNum";
C. string queryString = @"SELECT VALUE q FROM ExternalOrdersEntities.InboundQueues AS
qWHERE q.OrderNum = @orderNum";
D. string queryString = @"SELECT VALUE FROM ExternalOrdersEntities.InboundQueuesWHERE
OrderNum = @orderNum";
Answer: C

NO.5 The GetExternalOrder() method in the ExternalQueueService service is throwing a runtime
error. The
method must query the database for a record that matches the orderNum parameter passed to the
method. You need to modify the queryString string to retrieve the record. With which code segment
should
you replace line EQ64
A. string queryString = @"SELECT * FROM ExternalOrdersEntities.InboundQueuesWHERE OrderNum
=
@orderNum";
B. string queryString = @"SELECT q.OrderNum, q.VendorId, q.FilePath, q.OrderValueFROM
ExternalOrdersEntities.InboundQueues AS q WHERE q.OrderNum = @orderNum";
C. string queryString = @"SELECT VALUE q FROM ExternalOrdersEntities.InboundQueues AS
qWHERE q.OrderNum = @orderNum";
D. string queryString = @"SELECT VALUE FROM ExternalOrdersEntities.InboundQueuesWHERE
OrderNum = @orderNum";
Answer: C