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Oracle WebLogic Server 12c: Advanced Administrator II Questions and Answers

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Viewing questions 11-20 out of questions

Questions # 11:

In order to leverage replication and high availability features of your back-end database, among other benefits, you are configuring a JDBC TLOG store to persist transaction logs.

Since something went wrong during the setup of the TLOG, you are reviewing the configuration considerations for TLOG.

Which two guidelines are true for configuring JDBC TLOG stores? (Choose two.)

Options:

Only one JDBC TLOG store can be configured per WebLogic Server.

JDBC TLOG stores should only be configured for RAC databases.

Only globally-scoped (not application-scoped) data sources can be targeted to a JDBC TLOG store.

Multiple WebLogic Servers can share the same JDBC TLOG store.

Answer

A, C

Explanation

A: Only one JDBC TLOG store can be configured per WebLogic Server. Conversely, multiple WebLogic Servers can not share a JDBC TLOG store.

C: Only globally-scoped (not application-scoped) data sources can be targeted to a JDBC TLOG store.

Questions # 12:

Which three statements are correct regarding the WLST create command? (Choose three.)

Options:

When the create command is used with WLST online, the connection must be to the administration server.

The type of MBean being created must be a child type of the current management object.

The correct order of the mandatory parameters for the create statement is name followed by childMBeanType.

The create command is used to create any configuration or runtime management bean.

The create command returns a WLSTProgress object.

Answer

A, B, C

Explanation

A: When using the create command with WLST online you must be connected to an Administration Server.

B: Child types must be created under an instance of their parent type.

C: Syntax: create(name, childMBeanType, [baseProviderType])

The Create command creates a configuration bean of the specified type for the current bean.

Questions # 13:

Examine the domain diagram:

Question # 13

Assume all servers are up and running and you have just started an offline WLST interactive session. Assume further that the username/password “weblogic/Welcome1” maps to a valid administrator.

You type two lines of WLST code:

connect(‘weblogic’,‘Welcome1’,‘host02.acme.com:7101’)

print cmo.getType() + ‘:’ + cmo.getName()

What will be printed? (Choose the best answer.)

Options:

Domain:TestDomain

DomainRuntime:server03

Server:server03

Machine:machine02

Session:weblogic

Answer

Explanation

Example: The following example displays information about the current MBean, cmo.

wls:/mydomain/serverConfig> cmo.getType()

‘Domain’

Questions # 14:

You are implementing leasing functionality within your environment to ensure exclusive ownership of a cluster-wide entity.

Which type of leasing requires that Node Manager is configured and running? (Choose the best answer.)

Options:

high-availability database leasing

high-consensus leasing

non-database consensus leasing

high-availability in-memory leasing

Answer

Explanation

Setting Migration Basis to Consensus leasing means that the member servers maintain leasing information in-memory, which removes the requirement of having a high-availability database to use leasing. This version of leasing requires that you use Node Manager to control servers within the cluster.

Questions # 15:

In your production environment, you have deployed an application that is accessing a registered Java EE shared library as well as an application deployment plan. In addition, both the library and the application use annotations for some of their configuration properties. You are attempting to understand the current state of the properties that have been used in this deployment.

From greatest to least, what is the correct order of precedence that is used by WebLogic Server when applying configuration properties during deployment? (Choose the best answer.)

Options:

Deployment Plan, Application descriptors, Library descriptors, Application annotations, Library annotations

Deployment Plan, Application annotations, Library annotations, Application descriptors, Library descriptors

Deployment Plan, Library descriptors, Application descriptors, Library annotations, Application annotations

Deployment Plan, Application descriptors, Application annotations, Library descriptors, Library annotations

Deployment Plan, Library descriptors, Library annotations, Application descriptors, Application annotations

Answer

Explanation

The elements of the Enterprise application's descriptor itself have precedence over all elements in the library descriptors.

The deployment descriptor can still override values defined in the annotation.

Questions # 16:

Which two automatic migration scenarios require node manager for all migratable services? (Choose two.)

Options:

Consensus leasing

Database leasing with no pre and post migration scripts

Database leasing with pre and post migration scripts

Synchronous leasing

Answer

A, C

Explanation

When using automatic service migration, the Node Manager is required to get health monitoring information about the member servers involved, as follows:

* Consensus leasing – Node Manager must be running on every machine hosting managed servers within the cluster.

* Database leasing – Node Manager must be running on every machine hosting managed servers within the cluster only if pre/post-migration scripts are defined. If pre/post-migrations are not defined, then Node manager is not required.

Questions # 17:

You have defined Uniform Distributed Destination (UDD) topics targeted to multiple JMS servers.

Which three statements are correct about UDDs? (Choose three.)

Options:

UDDs guarantee the order of messages.

UDDs increase the overall availability of JMS.

Weight-based load balancing policy distributes messages evenly to servers with preassigned weights.

JMS destinations do not need to run on each server in a cluster.

You no longer need to create or designate destination members.

Answer

B, D, E

Questions # 18:

You are under Oracle Linux and you find the process ID of the WebLogic Managed Server Instance:

Question # 18

Which two command-line options can you use to issue a thread dump to examine the server for stuck threads? (Choose two.)

Options:

jstat -class 19142

java weblogic.utils.ThreadDump 19142

kill -5 19142

jstack 19142

kill -3 19142

Answer

D, E

Questions # 19:

You are asked to create a WLST script to make live updates to a domain that has its administration server running. You want your script to mimic the actions of a WebLogic administrator by using the administration console and clicking the “Lock and Edit” button.

What commands would accomplish this?

Options:

edit() followed by startEdit()

lockDomain() followed by edit()

domainConfig() followed by cd(‘Edit’)

getLock(0) followed by edit()

clearPending() followed by lockDomain()

lockDomain() followed by editDomain()

Answer

Explanation

Not edit() navigates to the last MBean to which you navigated in the edit configuration MBean hierarchy or to the root of the hierarchy, DomainMBean.

StartEdit() starts a configuration edit session on behalf of the currently connected user. You must navigate to the edit configuration MBean hierarchy using the edit command before issuing this command.

Note: Click the Lock & Edit button to lock the configuration edit hierarchy for the domain. This enables you to make changes using the Administration Console.

Questions # 20:

A client application asynchronously receives the message sent to a JMS Queue. The client is going to send a response to the sender.

Which two JMS Header fields from the original message are used to send the response? (Choose two.)