Given classes defined in two different files：  1. package ut

第1题：

Given two different character sets （A and B）， which of the following must be true for A to be considered a strict superset of B？（）

• A、 A must contain all of the characters defined in B
• B、 A must be Unicode
• C、 The encoded values in A must match the encoded values in B for all characters defined in B 
• D、 A must be a multibyte character set
• E、 The encoded values in A must match the encoded values in B for all numeric and alphabetic character

第2题：

Which two statements are correct about database transportation？（） 

• A、 The source and target platforms must be the same
• B、 Redo logs，control files and temp files are also transported
• C、 The transported database must have the same database identifier （DBID） as the source database and cannot be changed
• D、 The COMPATIBLE parameter must be set to 10.0.0.0 or higher and the database must be opened in readonly mode before being transported
• E、 Recovery Manager （RMAN） is used to convert the necessary data files of the database if the target platform is different and has different endian format

第3题：

第4题：

User defined locale files can be stored in which two locations?（）

• A、DRAM
• B、SDRAM
• C、CME flash，slot0
• D、CUE flash，slot0
• E、TFTP directory specified by cnf-file location command

第5题：

A member variable defined in a class can be accessed only by the classes in the same package. Which modifier should be used to obtain the access control？（）         

• A、 private
• B、 no modifier
• C、 public
• D、 protected

第6题：

How are the commands a user is allowed to enter defined in JUNOS?（）

• A、Permissions are configured individually for each user.
• B、Users are associated with user classes, and each class defines the permissions for entering commands.
• C、There are four default classes with different permissions and you can only use these four.
• D、Permissions are associated with each user ID

第7题：

Given a file GrizzlyBear.java：  1. package animals.mammals；  2.  3. public class GrizzlyBear extends Bear {  4. void hunt（） {  5. Salmon s = findSalmon（）；  6. s.consume（）；  7. }  8. }  and another file， Salmon.java：  1. package animals.fish； 2.  3. public class Salmon extends Fish {  4. void consume（） { /* do stuff */ }  5. }  Assume both classes are defined in the correct directories for theft packages， and that the Mammal class correctly defines the findSalmon（） method. Which two changes allow this code to compile correctly？（）

• A、 add public to the start of line 4 in Salmon.java
• B、 add public to the start of line 4 in GrizzlyBear.java
• C、 add import animals.mammals.*； at line 2 in Salmon.java
• D、 add import animals.fish.*； at line 2 in GrizzlyBear.java
• E、 add import animals.fish.Salmon.*； at line 2 in GrizzlyBear.java
• F、 add import animals.mammals.GrizzlyBear.*；at line 2 in Salmon.java

第8题：

第9题：

Which two statements are true of login classes?（）

• A、Users can be members of multiple login classes.
• B、Login classes define authorization parameters for a user.
• C、There are five system-defined login classes.
• D、Login class permission flags can be overridden for certain commands.

第10题：

Given that b and c refer to instances of wrapper classes， which two statements are true？（）

• A、 b.equals（b） returns true.
• B、 b.equals（c） returns the same result as b == c.
• C、 b.eqials（c） can return false even if c.equals（b） returns true.
• D、 b.equals（c） throws an exception if b and c are different wrapper types.
• E、 b.equals（c） returns false if the type of wrapper objects being compared are different.