When the introduced mongodb? - MongoDB Quiz

MongoDB - Quiz(MCQ)

When the introduced mongodb?

A)

2009

B)

2008

C)

2007

D)

2006

Correct Answer : 2009

Explanation : 10gen software company began developing MongoDB in 2007 as a component of a planned platform as a service product. In 2009, the company shifted to an open-source development model, with the company offering commercial support and other services. In 2013, 10gen changed its name to MongoDB Inc.

Initial release date : 11 February 2009

Founders : Kevin P. Ryan, Eliot Horowitz, Dwight Merriman

Recently Updated in MongoDB Questions

_______ disable balancing on a single collection in a sharded database.

A)

TagRange()

B)

sh._checkMongos()

C)

sh.removeTagRange()

D)

sh.disableBalancing()

Correct Answer : sh.disableBalancing()

Explanation : sh.disableBalancing() does not affect balancing of other collections in a sharded cluster.

____ activates the sharded collection balancer process if previously disabled using sh.disableBalancing().

A)

sh.enableSharding()

B)

sh.enableBalancing()

C)

sh.getBalancerHost()

D)

All of the above

Correct Answer : sh.getBalancerHost()

Explanation : sh.enableSharding() enables sharding on a specific database.

_______ returns a boolean to report if the balancer is currently enabled.

A)

sh.enableBalancing()

B)

sh.getBalancerState()

C)

sh.getBalancerHost()

D)

None of the above

Correct Answer : sh.getBalancerState()

Explanation : sh.getBalancerState() returns true when the balancer is enabled and false if the balancer is disabled.

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