IBM 000-376 問題集

質問 1：
Which of the following should generally be avoided if an application is being designed for optimal efficiency?
A. Code programs to open and close queues, or connect and disconnect from the queue manager only once, if the queues or connection will be used again.
B. Make messages nonpersistent if they do not need to be recoverable.
C. Group a batch of messages within a unit of work where appropriate, so that they can be committed all at once (e.g., get and put messages under syncpoint and commit them in groups of 10, rather than committing them individually).
D. Bundle the data to be transmitted into as few messages as possible (e.g., rather than sending a hundred 1MB messages, send one 100MB message).
正解：D

質問 2：
A new publish/subscribe application needs to be implemented. A mix of JMS and non-JMS WebSphere MQ applications will need to cooperate. It is suggested that the solution should be implemented using WebSphere MQ V7.0 rather than V6, because of the new publish/subscribe implementation of ebSphere MQ V7.0. Which of the following is NOT a benefit of the new publish/subscribe implementation in WebSphere MQ V7.0 over previous versions?
A. Topics are native WebSphere MQ objects, just like queues; new MQI calls and options areprovided to give applications a more intuitive way to access these than the use of RFH2headers.
B. Durable subscriptions are now supported.
C. A hierarchical system of topic based security is available and can be administered usingWebSphere MQ Explorer and setmqaut commands.
D. Message selectors and message properties can be used to further qualify subscriptions and thus reduce the number of messages received.
正解：B

質問 3：
A company needs to improve availability of client connections for its distributed applications.
Which one of the following is a true statement about a new option or capability of WebSphere MQ
V7.0 that could improve availability?
A. The new MQSTAT verb can be used to determine the health of a Queue Manager, leading toquicker detection and recovery from an outage
B. Client connections on the same server can share an instance of a channel connection,reducing the number of sockets required
C. TCP/IP client connections are now always full duplex, and full duplex can support earlierdetection of network failures
D. There is a new maximum instance channel limit that can catch a client application instancethat is attempting to use an excessive number of channel connections
正解：D

質問 4：
An application needs to display the last published message every five minutes. What is the best way of doing this?
A. Use MQSUB with MQSO_NEW_PUBLICATIONS_ONLY and call MQSUBRQ every five minutes.
B. Use MQSUB with SubExpiry set to 300.
C. Use MQSUB with MQSO_PUBLICATIONS_ON_REQUEST and call MQSUBRQ every five minutes.
D. Use MQSUB with MQSO_PUBLICATIONS_ON_REQUEST option and SubExpiry set to 300.
正解：C

質問 5：
A business requirement is brought forward for a back end server that is to send replies to requests sourced on the web and on internal application servers. The back end application will perform database lookups and formatting operations that are deemed trivial. Message sizes, traffic volumes and estimated annual growth rates are provided. The application designer is asked to provide a sizing estimate for a server that will be able to provide the response times stipulated in the SLA. Which is the fastest way to arrive at a reasonable estimate of the required server size?
A. Meaningful performance measurements can only be done once the application developmenthas progressed to the point where the actual code can be benchmarked.
B. Collect performance statistics from other WebSphere MQ based applications and extrapolatethe findings to your requirements.
C. Consult the Performance Reports from the WebSphere MQ SupportPac website forcomparable measurements and extrapolate to the specified requirements.
D. Create a suitable test program and test clients and perform a series of benchmarks on anavailable server.
正解：C

質問 6：
The HTTP bridge included with WebSphere MQ V7.0 can be a suitable alternative to the WebSphere MQ Client under certain circumstances. Which of the following is NOT true?
A. It conveniently supports WebSphere MQ access from web based applications, including those using asynchronous techniques such as AJAX.
B. Its use can reduce software distribution and maintenance cost if a large number of WebSphere MQ Client instances would otherwise be required.
C. It allows applications running on platforms not supported by WebSphere MQ, but has HTTP support, to gain access to a WebSphere MQ network
D. It fully supports WebSphere MQ V7.0 publish/subscribe.
正解：D

質問 7：
A WebSphere MQ for AIX application currently accepts an individual price change from an online user via local queue Q1. The company would like to start receiving price changes via a new input file on AIX. They are evaluating different approaches to transfer the data from the file to the pricing system queue Q1. Which of the following approaches is most appropriate for these requirements?
A. Write a program that reads through the file, taking each record from the file and putting it as amessage on the input queue to the Pricing System queue Q1.
B. Use RFHUTIL to move the data from the file to the Pricing System queue Q1.
C. Define the incoming file as an alias to the Pricing System queue Q1.
D. Use the File Transfer Application that comes with WebSphere MQ to read the records from thefile and send them to the Pricing System queue Q1.
正解：A

質問 8：
Why should only privileged users be permitted to define alias queues?
A. There is no check if the TARGET is defined or not.
B. A QALIAS can name another alias queue as its TARGET, which can potentially create aninfinite loop.
C. Users can bypass access control by creating a QALIAS.
D. An alias queue could have a remote queue for its TARGET.
正解：C