How many read request units of the DynamoDB table are required for an item up to 8 KB using one strongly consistent read request?

Answer - B.

One read request unit represents one strongly consistent read request, or two eventually consistent read requests for an item up to 4 KB in size.

As in the question, the item is up to 8KB, the DynamoDB table needs two read request units.

In Amazon DynamoDB, read operations are measured in terms of "Read Capacity Units" (RCUs). Each RCU represents the capacity to read one item up to 4 KB in size per second. DynamoDB provides two types of read operations: strongly consistent read and eventually consistent read.

A strongly consistent read returns the most recent version of the data, reflecting all writes that received a successful response prior to the read. A strongly consistent read requires more resources than an eventually consistent read.

For an item up to 8 KB using one strongly consistent read request, we need to calculate the number of RCUs required.

Since the item is up to 8 KB in size, it will require 2 RCUs for each read operation. This is because each RCU can read up to 4 KB, and the item is 8 KB.

Therefore, the number of read request units required for one strongly consistent read request of an item up to 8 KB is 2.

Hence, the correct answer is (A) 1.