While attempting to load a base operating system to a machine， an administrator is receiving bootp timeout error messages. What steps should be followed to troubleshoot communications between the NIM master and the client machine？（）

A、View debug logs on NIM master for errors or failures.

B、Boot the client machine to SMS， and view the POST Error log.

C、Boot the client machine to SMS， setup remote IPL， and execute a ping test.

D、Boot the client machine to diagnostics， and ping the client from the NIM master.

关联是对（）的命名。

A company has a business application that provides its users with many different reports： receivables reports， payables reports， revenue projects， and so on. The company has just purchased somenew， state-of-the-art， wireless printers， and a programmer has been assigned the task of enhancing all ofthe reports to use not only the company’s old printers， but the new wireless printers as well. When the programmer starts looking into the application， the programmer discovers that because of the design of theapplication， it is necessary to make changes to each report to support the new printers. Which two designconcepts most likely explain this situation？ （）

Inheritance

Low cohesion

Tight coupling

High cohesion

Loose coupling

Object immutability

Click the Exhibit button. Which statement is true about the classes and interfaces in the exhibit？（）

A、 Compilation will succeed for all classes and interfaces.

B、 Compilation of class C will fail because of an error in line 2.

C、 Compilation of class C will fail because of an error in line 6.

D、 Compilation of class AImpl will fail because of an error in line 2.

以下叙述正确的是（　　）。

A、在C语言中调用fopen函数就可把程序中要读、写的文件与磁盘上实际的数据文件联系起来

B、fopen函数的调用形式为：fopen(文件名);

C、fopen函数的返回值为NULL时，则成功打开指定的文件

D、fopen函数的返回值必须赋给一个任意类型的指针变量

在逻辑备份表expdp命令中，哪个参数是必须的（）。

A、Tables

B、Directiry

C、Dumpfile

D、logfile