android development:

a)Which of the following is not a method of a ContentResolver?

Select one:

a.onCreate

b.getType

c.delete

d.update

e.query

f.insert

b)How many ContentProviders and ContentResolvers can an app have?

Select one:

a.0 or more ContentProviders, 0 or more ContentResolvers

b.0 or more ContentProviders, 1 ContentResolver

c.1 ContentProvider, 1 ContentResolver

d.1 ContentProvider, 0 or more ContentResolvers

c)mRef= FirebaseDatabase.getInstance().getReference(); mRef is a reference to ----

Select one:

a.the root of the database

b.the child of the current position

c.the deepest child in the database tree

d)

Which of the following is false about a UriMatcher instance?

Select one:

a.A ContentProvider can be coded without using one

b.In its pattern bank an embedded # is a wildcard for a single digit character

c.Its output codes are programmer defined

d.When configured it basically translates URI patterns to codes

e.It must be instantiated using the new operator before it can be used