A.The query returns exactly 125 rows.

B.The country table is accessed as the first table, and then joined to the city table.

C.It takes more than 8 milliseconds to sort the rows.

D.35 rows from the city table are included in the result.

E.The optimizer estimates that 51 rows in the country table have Continent = 'Asia'.

A.MySQL server continued to start up even though another process existed.

B.systemd waited for 30 seconds before timing out and start up failed.

C.MySQL server was not started due to a problem while executing process 2732.

D.systemd attempted to start mysqld, found another systemd mysqld process running, and shut it down.

E.systemd found the mysqld service disabled and failed to start it.

A.ALTER TABLE world.city ADD SPATIAL INDEX (Name);

B.ALTER TABLE world.city ADD SPATIAL INDEX (Population);

C.ALTER TABLE world.city ADD INDEX (Population);

D.ALTER TABLE world.city ADD INDEX (Name);

E.ALTER TABLE world.city ADD FULLTEXT INDEX (Name);

F.ALTER TABLE world.city ADD FULLTEXT INDEX (Population);

A.QN = 3

B.QN = 5

C.QN = 1

D.QN = 4

E.QN = 2

A.Replication will fail because the slave has purged more aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa transactions than the master.

B.Replication will work.

C.Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.

D.Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc- cccc-cccccccccccc GTIDs.

E.Replication will fail because the master does not have the required transaction with bbbbbbbb-bbbb- bbbb-bbbb-bbbbbbbbbbbb GTIDs in its binary logs.