月份: 2009 年 10 月

SUN認證主要對象是程式人員。SUN自從被oracle公司收購以來，成為認證考試的熱點，SCJP, SCJD與Oracle的OCP, OCA證照并架齊居。310-811這一門考試是SUN認證剛推出的一項證照考試。SUN Other Certifications 310-811考試考古題由“KillTest認證題庫網”資深IT認證講師和SUN Other Certifications產品專家結合Prometric或VUE的真實考試環境最新原題精心打造。Sun 310-810 考題 DEMO 如下：

1.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
Answer:B
2.Which of the following statements are required to create a key cache of 4 MB, assign the MyISAM table
world.City to it and preload the index?
A. mysql> SET GLOBAL city_cache.key_buffer_size = 4194304;mysql> CACHE INDEX world.City IN
city_cache;mysql> LOAD INDEX INTO CACHE world.City;
B. mysql> ALTER TABLE world.city KEY_CACHE = 4194304;
C. mysql> CREATE CACHE FOR world.City SIZE = 4194304;
D. It is not possible to create a key cache for a specific MyISAM table, only the global key cache can be
used.
Answer:A
3.How can the SHOW PROCESSLIST command be helpful when optimizing queries?
A.It shows if a query is using an index or not.
B.It shows how the server processes a query.
C.If checked periodically, it can reveal queries that cause other queries to hang.
D.It shows the percentage of processing power that each query is using on a server.
Answer:C
4. Consider the following:
mysql> EXPLAIN SELECT Name FROM Country WHERE Code = ‘CAN’\G
*************************** 1. row ***************************
id:1
select_type: SIMPLE
table: Country
type: const
possible_keys: PRIMARY
key: PRIMARY
key_len: 3
ref: const
rows:1
Extra:
Which of the following best describes the meaning of the value of the type column?
A.The table has exactly one row.
B.Several rows may be read from the table.
C.Only one row of all its rows need to be read.
Answer:C