Which of the following is a correct statement about rPerf？（）

A、It can only be used on systems running without partitions.

B、It is relevant for IBM systems running the AIX operating system.

C、It is the main benchmark for sizing systems that will run HPC applications.

D、It has a direct relationship with other benchmarks like TPC-C and SpecjAppServer2004.

The validate_password plugin is loaded and displays the following settings in global variables: Mysql＞ SHOW VARIABLES LIKE ‘validate_password%’; When attempting to set your password, you get the following error: Mysql＞ SET PASSWORD = PASSWORD (‘Hoverl@%’); ERROR 1819 (HY000): Your password does not satisfy the current policy requirements What is the cause of the error?（）

A、 The password is eight characters long, but needs to exceed validate_password_length to be valid

B、 All of the MEDIUM password policy requirements have not been honored

C、 The password matches a substring Hover as a dictionary word

D、 The password does not match the validate_passoword_number_count requirement

E、 There is no dictionary file defined, so password validation cannot work as expected

有如下程序段：其中会产生编译错误的语句是（　　）。

A、④

B、③

C、②

D、①

当计算机突然掉电后，计算机中（）信息全部丢失，再次通电也无法恢复。

A、ROM和RAM中的信息

B、RAM的信息

C、ROM的信息

D、硬盘中的信息

The following commands are available in the Linux binary distributions of Mysql: Mysqld Mysqld_safe Mysql.server What is the correct description of each of these commands?（）

A、 A

B、 B

C、 C

D、 D

An IT director needs to deploy 3 partitions， each using dedicated internal boot disk. Which system will support the customer requirement using the least amount of rack space？（）

A、Power 770 servers

B、Power 750 servers

C、Power 755 servers

D、Power 720 servers