Câu 1: C100DBA: MongoDB Associate Database Administrator

Given the following sample documents in the products collection:{ “name” : “XPhone”, “ram” : 4, “cpu” : 2, “storage” : [ 64, 128, 256 ] },{ “name” : “XPad”, “ram” : 16, “cpu” : 2, “storage” : [ 128, 256, 512 ] },{ “name” : “GTablet”, “ram” : 12, “cpu” : 4, “storage” : [ 16, 64, 128 ] },{ “name” : “GPad”, “ram” : 8, “cpu” : 4, “storage” : [ 128, 256, 1024 ] },{ “name” : “GPhone”, “ram” : 4, “cpu” : 2, “storage” : [ 128, 256, 512 ] }Given the following query: What is the correct output of the query?

1. A. { “name” : “XPad”, “ram” : 16, “cpu” : 2, “storage” : [ 128, 256, 512 ] }{ “name” : “GTablet”, “ram” : 12, “cpu” : 4, “storage” : [ 16, 64, 128 ] }
2. B. { “name” : “XPad”, “ram” : 16, “cpu” : 2, “storage” : [ 128, 256, 512 ] }{ “name” : “GTablet”, “ram” : 12, “cpu” : 4, “storage” : [ 16, 64, 128 ] }{ “name” : “GPad”, “ram” : 8, “cpu” : 4, “storage” : [ 128, 256, 1024 ] }
3. C. { “name” : “GTablet”, “ram” : 12, “cpu” : 4, “storage” : [ 16, 64, 128 ] }{ “name” : “GPad”, “ram” : 8, “cpu” : 4, “storage” : [ 128, 256, 1024 ] } — đáp án hiện tại
4. D. { “name” : “XPad”, “ram” : 16, “cpu” : 2, “storage” : [ 128, 256, 512 ] }{ “name” : “GPhone”, “ram” : 4, “cpu” : 2, “storage” : [ 128, 256, 512 ] }