Explanation:In version 2.2 and newer, capped collections do have an _id field, except those in the local database. 2. Point out the wrong statement :
A. MongoDB can query for locations contained entirely within a specified polygon
B. MongoDB require an index for inclusion queries; however, such indexes will improve query performance
C. Indexes on embedded fields allow you to use a “dot notation,” to introspect into embedded documents
D. None of the mentioned
Answer:A
Explanation:In version 2.2 and newer, capped collections do have an _id field, except those in the local database. 2. Point out the wrong statement :
A. MongoDB can query for locations contained entirely within a specified polygon B. MongoDB require an index for inclusion queries; however, such indexes will improve query performance C. Indexes on embedded fields allow you to use a “dot notation,” to introspect into embedded documents D. None of the mentioned
Explanation:Both 2d and 2dsphere indexes can support inclusion queries. 3. MongoDB supports spherical surface calculations on legacy coordinate pairs using a _______ index