최신 MYSQL-Certifications 1Z0-874 무료샘플문제:
1. It is important to analyze queries that involve joins with EXPLAIN because...
A) Using EXPLAIN before executing the query helps the server prepare the statements used.
B) Joins have the potential to cause more server processing if not defined correctly.
C) Joins are more prone to mistakes.
2. Which of the following best describes the purpose of the join buffer, and when should you increase the size of it? (Choose three)
A) The join buffer is used to process sorts when complex joins are being performed.
B) The join buffer is global and can only be changed by restarting the server.
C) The value should be increased if the client has the tendency to perform complex joins.
D) The value should be increased if the client performs a lot of SELECT operations.
E) The join buffer is used to process joins.
F) The join buffer is set per-connection.
3. Can multi-column FULLTEXT indexes be used? If so, when?
A) Yes, they can be used to search either one or all of the indexed columns.
B) No, they can not be used.
C) Yes, they should be used to search multiple columns simultaneously.
4. Is the following statement true or false? The username you use to connect to MySQL must be the same as the login used to access the operating system.
A) True
B) False
5. Which of the following steps are used to create database symbolic links on Windows? (Choose four)
A) Move the database directory from the data directory to a new location.
B) Stop the server.
C) Update your my.ini with the path to the new location.
D) Use the ln -s command.
E) Create a file in the data directory with the database name with an extension of .sym that contains the full path to the new location.
F) Restart the server.
질문과 대답:
| 질문 # 1 정답: B | 질문 # 2 정답: C,E,F | 질문 # 3 정답: C | 질문 # 4 정답: B | 질문 # 5 정답: A,B,E,F |
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