Select three true statements regarding Coherence()

题目
多选题
Select three true statements regarding Coherence()
A

Coherence provides stronger data management than an Application Server

B

Coherence provides better scale-out performance than a Application Server

C

Coherence provides better scale-out performance than a Database Server

D

Coherence provides better througput than a JMS messaging server Coherence provides stronger configuration management than Grid Control

参考答案和解析
正确答案: A,B
解析: 暂无解析
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Which three statements about dynamic filtering are true? ()

A. Dynamic filtering creates a query statement.

B. Dynamic filtering has an option to save query.

C. Dynamic filtering can select any log field to filter.

D. Dynamic filtering permanently removes other log entries.

E. Dynamic filtering redraws the log when you select a variable link.


参考答案:A, B, E

第2题:

Which statement is true regarding the INTERSECT operator?()

  • A、It ignores NULL values 
  • B、Reversing the order of the intersected tables alters the result 
  • C、The names of columns in all SELECT statements must be identical 
  • D、The number of columns and data types must be identical for all SELECT statements in the query 

正确答案:D

第3题:

Which three statements are true regarding the use of the Database Migration Assistant for Unicode(DMU)?()

A. A DBA can check specific tables with the DMU

B. The database to be migrated must be opened read-only.

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E. The DMU can report columns that are not represented in the converted characterset.


参考答案:A, D, E

第4题:

Which two statements are TRUE regarding Coherence Indexes ? ()

  • A、 indexes are maintained by cache entry ownes
  • B、 an application should not suggest an index that another aplication had suggested
  • C、 indexes cannot be sorted
  • D、 each application using Coherence may suggest the same set of indexes when it starts

正确答案:A,D

第5题:

Select three true statements regarding Coherence()

  • A、 Coherence provides stronger data management than an Application Server
  • B、 Coherence provides better scale-out performance than a Application Server
  • C、 Coherence provides better scale-out performance than a Database Server
  • D、 Coherence provides better througput than a JMS messaging server Coherence provides stronger configuration management than Grid Control

正确答案:A,B,C

第6题:

Which two statements are true regarding the USING clause in table joins?()

  • A、It can be used to join a maximum of three tables 
  • B、It can be used to restrict the number of columns used in a NATURAL join 
  • C、It can be used to access data from tables through equijoins as well as nonequijoins 
  • D、It can be used to join tables that have columns with the same name and compatible data types

正确答案:B,D

第7题:

Which two statements are true regarding the ORDER BY clause? ()

  • A、The sort is in ascending by order by default.
  • B、The sort is in descending order by default.
  • C、The ORDER BY clause must precede the WHERE clause.
  • D、The ORDER BY clause is executed on the client side.
  • E、The ORDER BY clause comes last in the SELECT statement.
  • F、The ORDER BY clause is executed first in the query execution.

正确答案:A,E

第8题:

Which of the following a true statements regarding the use of VLANs to segment a network? (Select three)

A. They increase the size of collision domains

B. They allow logical grouping of users by function.

C. They can enhance network security.

D. They increase the size of the broadcast domain while decreasing the number of collision domains.

E. They increase the number of broadcast domains while decreasing the size of the broadcast domains.

F. They simplify switch administration.


正确答案:BCE
B,C,E 解析:Explanation:
VLANs are used to segment a LAN into multiple, smaller LANs. This can be used to enhance security as local traffic from one VLAN will not be passed to users in other VLANS.

Incorrect Answers:
A. VLANs are used to decrease the size of a collision domain, not increase it.

D. The opposite is true.

F. The default operation of a switch is to allow all traffic and to enable all ports in VLAN1. The use of VLANs will increase the complexity of the switch environment, making for more difficult administration.

第9题:

Identify the true statement regarding Temporary Coherence cluster members()

  • A、 it should have "localstorage" set to TRUE
  • B、 it should be configured so as to not trigger re-partitioning 
  • C、 both A and B are TRUE
  • D、 Neither A and B are TRUE

正确答案:B

第10题:

Which two statements are true regarding subqueries? ()

  • A、A subquery can retrieve zero or more rows 
  • B、Only two subqueries can be placed atone level 
  • C、A subquery can be used only in SQL query statements 
  • D、A subquery can appear on either side of a comparison operator 
  • E、There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement 

正确答案:A,D

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