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An index prefix is a subset of a ______ index, consisting of one or more keys starting from the beginning of the index.

Correct Answer: Compound
With index intersection, MongoDB can use an intersection of either the entire index or the index prefix.

A prefix of a _______ index is a subset that consists of one or more keys at the start of the index key pattern.

Statements : All the locks are keys. All the keys are bats. Some watches are bats.

Conclusions :
I. Some bats are locks.
II. Some watches are keys.
III. All the keys are locks.

Let A(1), A(2), A(3),…….., A(100) be 100 sets such that number of elements in A(i)=i+1 and A(1) is subset of A(2), A(2)is subset of A(3),….., A(99) is subset of A(100). The number of elements in union of the all the sets are: n(A(1) U A(2) U A(3) …..U A(100)).

In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even ifthey seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statements:
(I) Empty set is a subset of any set.
(II) A set is a subset of power set. Conclusion:
(I) Empty set is a power set.
(II) A set is a subset of power set.

An index can support sort operations on a non-prefix subset of the index key pattern using _________ condition.

Some pins are needles. Some needles are handles. Some handles are locks. Some locks are keys. Conclusions: I. Some keys are handles II.Some handles are pins III. Some pins are keys

Statements :
All keys are locks.
All locks are bangles.
All bangles are cars.
Conclusion :
a. Some cars are locks.
b. Some bangles are keys.
c. Some cars are keys.

Statements : Some pots are keys. Some keys are locks. All keys are rings.

Conclusions :
I. Some pots are locks.
II. Some pots are not locks.
III. Some pots are rings.
IV. Some pots are not rings.

Statements : Some keys are staplers. Some staplers are stickers. All the stickers are pens.

Conclusions :
I. Some pens are staplers.
II. Some stickers are keys.
III. No sticker is key.
IV. Some staplers are keys.

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives. Violence takes a heavy toll and affects public life ______. High or low, known or unknown, rich or poor, popular or unpopular, no one is safe or secure today. It
appears that one can harm anybody at any time and at ______. A mad and sad rat race is on to make money and ______ power at any cost and by any means. The
result is that no political party or group can now ______ into claim to total innocence in so far as ______ of violence against innocent person for personal or political
gains is concerned. Violent demonstrations, rallies, hartals have become the order of the day. It appears that one can harm anybody at any time and at ______.