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MYSQL 1Z0-874 Exam Syllabus Topics:

MYSQL MySQL 5.0 Database Administrator Certified Professional Exam, Part II Sample Questions:

1. Is it possible to force the join order in a query, and if so how?

A) No, it is not possible.
B) Yes it is possible simply list the tables in the desired order in your SELECT.
C) Yes it is possible use SELECT FORCE_JOIN rather than just SELECT, then list the tables in the desired order.
D) Yes it is possible, use SELECT STRAIGHT_JOIN rather than just SELECT, the list the tables in the desired order.

2. Should all queries in the slow query log be optimized? (Choose two)

A) No; Queries that are run rarely are probably not worth the effort of optimization
B) No; Only the very slowest queries should be optimized
C) Yes, unless they depend on tables in the mysql database
D) Yes.
E) No; A query may have been entered into the slow query log because other, slow queries, prevented it from executing quickly

3. When working with replication, why might you want to stop the SQL thread on the slave while keeping the I/O thread running? (Choose two)

A) So that events for the slave do not get backlogged on the master.
B) So that no changes are made while making backups.
C) So that remaining events can be processed while not receiving new events from the master.

4. When creating a new user account, which of the following are valid ways of specifying the hostname part of the account? (Choose six)

A) Using an IP number with wildcards, as 100.160.1.%
B) Using localhost
C) Leaving it unspecified, allowing connections from any host
D) Using a hostname pattern with wildcards, such as %.comp1.com
E) Using a hostname, such as agric.comp1.com
F) Using an IP address, such as 100.160.1.47
G) User accounts do not contain a hostname part
H) Using an IP number/netmask combination such as 100.160.0.0/255.255.0.0

5. Consider the following:
mysql> EXPLAIN SELECT * FROM City WHERE Name = 'Jacksonville' AND CountryCode =
'USA'
*************************** 1. row ***************************
id: 1
select_type: SIMPLE
table: City
type: ref
possible_keys: name_country_index
key: name_country_index
key_len: 13
ref: const,const
rows: 1
Extra: Using where
Which of thefollowing best describes the meaning of the value for the key_len column?

A) It shows how many bytes will be used from index rows.
B) It shows how many results will be returned.
C) It shows how big the indexes are.
D) It shows how many columns are examined.

Solutions: