CMS专题
单选题You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used. Which method would you follow to ac
题目
enable index monitoring and query the DBA_OBJECTS view
enable index monitoring and query the DBA_INDEXES view
enable index monitoring and query the V$OBJECT_USAGE view
enable index monitoring and view the DBA_INDEXTYPE_COMMENTS view
相似问题和答案
第1题：
Have you ever been to the place? You can see many places of interest there．（合并为一句）
Have you ever been to the place ________you can see many places of interest?
39. where
第2题：
Have you ever stopped to think why many people are complaining about all the pressure in life? (翻译)
第3题：
A.has complained
B.have complained
C.complain
D.complaining
第4题：
Companycom has just installed a p5 595 with four uncapped LPARs in a shared processor pool. The system and profile settings are still in their default states. One of the LPARs has an application that is consuming all of the available shared processor resources. Users of this application are complaining about response time. Which of the following changes to the slow LPAR would improve response time?（）
- A、Enable SMT
- B、Reduce the weight
- C、Renice the process
- D、Increase the weight
正确答案:D
第5题：
You are the network administrator of a Layer 3 switched network. Users in one VLAN are complaining thataccess to the server VLAN is very slow from time to time. Traffic in the local VLAN works without any issue，and users in other VLANs do not have any complaint to reach the server VLAN. What is most likely thecause of this issue？（）
- A、routing issue
- B、denial-of-service attack
- C、MAC flooding
- D、spanning-tree recalculation
- E、Layer 2 loop
- F、ARP spoofing attack
正确答案:F
第6题：
You create a Web site that is for members only. The Web site allows members to create lists of users that have access to information about member profiles. The name of the list is stored in the listName variable. The user name of the user to whom access is given is stored in the username variable.You need to enable members to manage their lists of users.Which code segment should you use?（）
A.
B.
C.
D.
第7题：
You have just issued the command commit confirmed and your network continues to be operational with no further changes required. You issue a commit and-quit. A short time later, users start complaining about network problems. Which commands (in order) need to be entered to resolve this issue?（）
A.A
B.B
C.C
D.D
第8题：
Tell me about a city you have visited.
You should say:
where the city is and when you went there
what people can see and do in that city
why that city is special and explain why your visit to that city was memorable.
You will have to talk about the topic for one to two minutes.
You will have one minute to think about what you're going to say.
You can make some notes to help you if you wish.
The city that I visited most recently was Sydney. It's on the coast of South-East Australia and is one of the biggest cities in that country. It's most famous for it's opera house, which I went to on a tour. Nearby, there is a big bridge—I can't remember the name. It's shaped like an arch. I went there last month to visit a friend. There are many theatres, galleries and other cultural things to do there, but I spent most of my time just walking around. In the evenings, I went out to a few of the bars with my friend. They were a little expensive, but I enjoyed the atmosphere and we met some interesting people. There are still some old buildings from the colonial era and I took some photographs of them whenever I saw them on my walks. What makes the city special? I'd say that the people. Most people are friendly and cheerful. They seem very, optimistic. They are also very out-going and so Sydney is quite lively in the evenings—at least in the city centre. I'm looking forward to going there again someday.
第9题：
You are the network administrator of an enterprise company that just deployed a global IP telephony environment. In order to guarantee good voice quality， you asked your provider to implement QoS on the CE routers of your MPLS network. On your LAN， you have also deployed QoS. Users， however， keep complaining about bad voice quality， and the provider does not see matches on the DSCP values that you have asked him to match upon. What is most likely the problem？（）
- A、The phones are not sending traffic with the correct DSCP value.
- B、The Cisco CallManager is not marking the traffic correctly.
- C、This is most likely a bug on the CE routers.
- D、Your LAN QoS is incorrectly configured.
正确答案:D
第10题：
You work as a database administrator for Supportcenter.cn. In a production environment， users complain about the slow response time when accessing the database. You have not optimized the memory usage of the Oracle instance and you suspect the problem to be with the memory. To which type of object would you refer to determine the cause of the slow response？（）
- A、The trace file
- B、The fixed views
- C、The data dictionary views
- D、The operating system log fields
- E、The dynamic performance views.
正确答案:E