Passguide oracle 1z0-108
Data Center Networking Infrastructure Support Specialist
Q&A V3.20
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1. Scenario : A single tier WebLogic cluster is configured with six Managed Servers. An Enterprise application is deployed to the cluster with a web application and EJBs packaged in the same EAR file.
An EAR file is being deployed to the cluster using two-phase deployment. Which of the following is true if one of the Managed Servers is NOT started in the cluster?
A. First and second phase deployment will be completed on all remaining instances in the cluster.
B. First phase deployment will not be completed on the remaining instances in the cluster.
C. First phase deployment will be completed but the second phase will not be completed on the remaining instances in the cluster.
D. First and second phase deployment will not be completed if enforceClusterConstraints is set to true for the Deployer.
E. Both a and d
Answer: E
2. Which of the following statements are true for built-in roles in the WebLogic Server Administration console? Choose two.
A. Users who belong to the Operator role can deploy the applications.
B. Users who belong to the Monitor role can view the server configuration, except for the encrypted attributes.
C. Users who belong to the Admin role cannot deploy applications.
D. Only users who belong to the Admin role can start, stop, and resume the server.
E. Users who belong to the Admin role can modify the entire server configuration.
Answer: BE
3. Scenario : Consider an upgrade requirement from pre-WebLogic Server 10.x to the WebLogic Server 10.x. Since the administration scripts in the prior version used WebLogic Ant tasks for creation and deployment, the team decides to use the Ant build.xml approach and extend this to the current version of the server.
Which of the following about the Ant task wlserver is INCORRECT?
A. wlserver can be used to start, reboot or shut down server instances.
B. wlserver can be used to connect to existing server instances.
C. wlserver can be used to create a multiple server domain configuration.
D. wlserver can be used to create a single server domain and to connect to the server.
Answer: C
4. Click on the Exhibit button.
Scenario : You have made the decision to migrate all your operations onto WebLogic Server. An application has been chosen from each department for the initial phase of migration ?one from each of Sales, Marketing, Accounts, and Customer Service. The applications will be deployed as individual EAR files to a cluster of WebLogic Server 10.x instances, each with a pool of connections to an Oracle 10g database that provides corporate and departmental data services. The database team hopes to upgrade the database to use Oracle RAC (Real Application Clusters) shortly, which will require you to configure multiple sets of connections. Connectivity to the existing Service Engineer Dispatch system is via a JMS message bridge. When a service engineer calls in with a report, a message is sent via JMS to the Customer Service application deployed in WebLogic Server. The customer record in the Customer Service database must be updated with details from the message. It is important that the message is not lost because the call management system is not able to resend messages. To address this, the Customer Service application is accessing a persistent JMS Queue using an XA compatible connection factory.
The database security team insists that any use of the corporate Oracle database can be traced to the individual user that made the request. How can this be achieved when using WebLogic JDBC Data Sources?
A. Set the Enable Credential Mapping property for the Data Source.
B. Set Initial Capacity to zero, so each user creates a new connection.
C. Set the value of user to {WLS_USER} in the Properties field.
D. This can only be done using application code.
E. This cannot be done because Data Sources connect using a single username.
Answer: A
5. In a multi-server WebLogic domain, monitoring the JVM statistics showed frequent full garbage collections (gc) on one of the server instances. Which one of the following would greatly reduce the frequency of full gcs?
A. Increasing the young object space in the heap
B. Turning the -verbosegc flag on
C. Adding more servers to the domain
D. Running more servers per machine
Answer: A
6. What are the four basic components of a JMS system-resource module in the config.xml in WebLogic 10.x?
A. Name, target, subdeployment, descriptor-file-name
B. Domain, jms-server, connection factory, destination
C. Config.xml, jms-module, subdeployment, descriptor-file-name
D. Name, jms-module, subdeployment, descriptor-file-name
Answer: A
7. The deployment configuration for an application or module is NOT stored in which type of the following XML document:
A. J2EE deployment descriptors
B. weblogic-*.xml descriptors
C. WebLogic Server deployment plans
D. WebLogic config.xml
Answer: D
8. Scenario : Consider a b2b commerce application hosted on a WebLogic cluster with JMS messages being received, processed, and forwarded to external servers. The server log indicates a potential stuck thread problem where threads are continually getting stuck and JMX monitoring indicates a continuous backlog of pending messages that could be due to any of the in-flight messages, delayed messages, or messages being inhibited from delivery.
The recommended approach for setting the number of execute threads would be:
A. Set the default thread pool max value to match load expectations
B. Use an iterative approach to set the max thread count value
C. Set this value the same as the max connections value set on database connections
D. Leave this setting to be handled by the Work Manager by configuring MaxThreadsConstraint
Answer: D
9. An application-wide deployment plan was used to deploy an application. Based on post-performance diagnosis, the HTTP post size needs to be reduced. Following would be a valid approach:
A. Configure the http maximum post size value in the existing deployment plan for redeploying using the weblogic.Deployer utility.
B. Update the http maximum post size for the application using weblogic.Deployer.
C. Use weblogic.PlanGenerator to update http maximum post size configuration and redeploy the application.
D. Use weblogic.Admin to set auto-tune-http-setting to be true and redeploy the application.
Answer: A
10. Scenario : The Stock Control Application you are going to deploy to a cluster of WebLogic Managed Servers requires a JMS destination to asynchronously deliver the messages to the back-end Warehousing Application. To distribute the messages across the cluster, you decided to configure the distributed destination. Also the Warehousing Application is a legacy application written to implement a proprietary MQ API connecting an MQ-Series server. The Stock Control Application is implemented as a web application on a WebLogic cluster delivering the message to the distributed destination. The cluster has three Managed Servers hosted on two high powered machines and one low range/powered machine.
To distribute the physical destinations unevenly across the clustered WebLogic Managed Servers so that the high-powered machines can receive more messages than the low-powered machines, configure the distributed destination with:
A. “Allocate Members Uniformly” set to false and manually select more physical destinations from the high-powered machines
B. “Uneven Distribution” set to true and select all the physical destinations
C. “Uniform Distribute Destination” set to true and select all the physical destinations from the high-powered and low- powered machines
D. “Load Balancing Policy” set to Random and select only the destination from the high-powered machine
Answer: A
11. JMS interop modules are different from JMS system resource modules because (Choose two)
A. JMS interop modules cannot use “Unit-of-Order”.
B. JMS interop modules can be targeted to multiple WebLogic Servers at the same time in a domain.
C. JMS interop module configuration is always stored as interop-jms.xml.
D. JMS interop module cannot use “Quota.”
Answer: BC
12. Which of the following is true about JMS Quota resources in WebLogic Server 10.x?
A. Quota settings can be shared across multiple JMS destinations so that they can compete.
B. Quota settings are defined on the JMS connection factory level.
C. Quota settings can be used to limit the number of JMS Connections to a JMS Server.
D. Quota settings can be shared across multiple WebLogic domains.
Answer: A
13. The feature to group messages into a single unit that is processed sequentially in the order that the messages were created is called
A. Unit-or-Sort
B. Message Sorting
C. Destination Keys
D. Unit-of-Order
Answer: D
14. When a message is being processed by a consumer, the other unprocessed messages which belong to the same Unit-of-Order will be:
A. Expired
B. Blocked
C. Delivered to the consumers
D. Rolled back
Answer: B
15. Click on the Exhibit button.
Scenario : A multi-cluster architecture, with two geographically separated clusters (WAN-1 and WAN-2), is being created. It will provide cross-cluster WAN HTTP session failover. The WAN-1 cluster is located in London and the WAN-2 cluster is located in New York and is connected via a slow interconnect. The client request passes through a Global load balancer which load balances the request to local load balancers which eventually pass the load to WebLogic Server instances in the cluster. Four WebLogic Server instances will be running on each cluster distributed on two physical machines, two WebLogic instances per physical machine. A database is configured on each cluster for HTTP Session state failover between the clusters.
What would be the characteristics of the above WAN Cluster for optimal performance and scalability?
A. High network latency, asynchronous persistent replication between WAN-1 and WAN-2, synchronous intra-cluster replication and cross-cluster replication via in-memory, JDBC or file persistence.
B. Fast network, synchronous persistent replication between WAN-1 and WAN-2, asynchronous replication intra-cluster and cross-cluster replication via file persistence.
C. High network latency, asynchronous persistent replication between WAN-1 and WAN-2, synchronous intra-cluster replication and cross-cluster replication via JDBC
D. Low network latency, asynchronous persistent replication between WAN-1 and WAN-2, no intra-cluster replication and cross-cluster replication via JDBC
E. Fast network, synchronous persistent replication between WAN-1 and WAN-2, asynchronous intra-cluster replication and cross-cluster replication via cookie persistence.
Answer: C
16. Click on the Exhibit button.
Scenario : A multi-cluster architecture, with two geographically separated clusters (WAN-1 and WAN-2), is being created. It will provide cross-cluster WAN HTTP session failover. The WAN-1 cluster is located in London and the WAN-2 cluster is located in New York and is connected via a slow interconnect. The client request passes through a Global load balancer which load balances the request to local load balancers which eventually pass the load to WebLogic Server instances in the cluster. Four WebLogic Server instances will be running on each cluster distributed on two physical machines, two WebLogic instances per physical machine. A database is configured on each cluster for HTTP Session state failover between the clusters.
What happens if all the servers hosted in the London cluster crashes in the middle of an http session update?
A. The session will be regenerated on the New York cluster without any session data loss, and a new primary server will be created using the secondary session data.
B. The session will be regenerated on the New York cluster but there could be a loss of session data; a new primary server will be created using the last known secondary session data.
C. The session will not be regenerated on any cluster; the user will be redirected to the New York cluster to create a new session.
D. The session will be regenerated if the primary server on the London cluster is restarted.
E. Both b and d
Answer: B
17. Click on the Exhibit button.
Scenario : A multi-cluster architecture, with two geographically separated clusters (WAN-1 and WAN-2), is being created. It will provide cross-cluster WAN HTTP session failover. The WAN-1 cluster is located in London and the WAN-2 cluster is located in New York and is connected via a slow interconnect. The client request passes through a Global load balancer which load balances the request to local load balancers which eventually pass the load to WebLogic Server instances in the cluster. Four WebLogic Server instances will be running on each cluster distributed on two physical machines, two WebLogic instances per physical machine. A database is configured on each cluster for HTTP Session state failover between the clusters.
If the admin server for New York cluster crashes, what will be the effect on inter-cluster communication between the two sites?
A. There’s no effect on the inter-cluster communication between the two sites
B. JDBC session flushing between two sites will be affected and will only be restarted on the Admin server reboot.
C. Intra-cluster multicasting will be affected and inter-cluster communication will slow down between the sites.
D. The Managed Servers will lose session stickiness and the server Health state will be changed to suspend.
E. Both c and d
Answer: A
18. Click on the Exhibit button.
Scenario : A multi-network cluster, say WAN-1 and WAN-2, is being created that will provide WAN HTTP session failover. The WAN-1 cluster is located in London and the WAN-2 cluster is located in New York and is connected via a slow interconnect. The client request passes through a Global load balancer which load balances the request to local load balancers which eventually pass the load to WebLogic Server instances in the cluster. Four WebLogic Server instances will be running on each cluster distributed on two physical machines, two WebLogic instances per physical machine. A database is configured on each cluster for HTTP Session state failover between the clusters.
How can you configure in-memory session replication on the London cluster?
A. The web application deployment descriptor, weblogic.xml needs to have the persistent-store-type set to memory.
B. The web application deployment descriptor, weblogic.xml needs to have the persistent-store-type set to replicated.
C. The web application deployment descriptor, weblogic.xml needs to have the persistent-store-type set to cookie.
D. The web application deployment descriptor, web.xml needs to have the persistent-store-type set to memory.
E. The web application deployment descriptor, web.xml needs to have the persistent-store-type set to replicated.
Answer: B
19. Scenario : A single tier WebLogic cluster is configured with six Managed Servers. An Enterprise application is deployed to the cluster with a web application and EJBs packaged in the same EAR file.
A JSP in the web application makes an initial Context lookup on the stateless EJB and makes multiple method calls to the EJB. Which of the following is true?
A. Each method call is invoked on an EJB on the same server as the web application as long as the server is not overloaded.
B. Each method call is invoked on the same EJB in the same server as the web application as long as the server is not overloaded.
C. Each method call round robins between the servers.
D. The behavior depends on the load algorithm on the replica-aware stub.
E. Every third call goes to a random server.
Answer: A
20. Requirement demands that an incoming request from a portfolio manager has to have a higher priority compared to other users of the application. As an administrator, which one of the following approaches would you adopt?
A. Use Work Manager with the execute thread model to set up rules to associate a priority to the user.
B. Use Work Manager fair-share-request-class to associate a priority to the user.
C. Use Work Manager response-time-request-class to associate a priority to the user.
D. Use Work Manager context-request-class to associate a priority to the user.
Answer: D
21. Scenario : A single tier WebLogic cluster is configured with six Managed Servers. An Enterprise application is deployed to the cluster with a web application and EJBs packaged in the same EAR file.
An IIS proxy plug-in is configured for load balancing to the cluster. How does the proxy server maintain the session stickiness to the cluster instances?
A. Plug-in examines the session cookie in the user request.
B. Plug-in uses the keep-alive connection pool to find the sticky server.
C. Plug-in examines the heartbeats between the cluster instances.
D. By using the cluster available list from the Admin server.
E. Both a and b
Answer: A
22. Scenario : A single tier WebLogic cluster is configured with six Managed Servers. An Enterprise application is deployed to the cluster with a web application and EJBs packaged in the same EAR file.
Your IIS proxy plug-in started losing session stickiness, and the users are getting logged out of the system. What could be the possible issues leading to this?
A. Network issues are causing a drop in multicast packets between the cluster instances.
B. The Admin server hung and lost connection with the cluster instances.
C. A few of the back-end cluster instances are hung and the TCP backlog buffer is full.
D. a or c (or) a and c
E. b (and) a or c
Answer: D
23. Scenario : A single tier WebLogic cluster is configured with six Managed Servers. An Enterprise application is deployed to the cluster with a web application and EJBs packaged in the same EAR file.
If the WebLogic Administrator wants to deploy a large application located on a shared drive in the exploded directory format to the cluster instances distributed among different physical machines, what would be the best option for the deployment?
A. Deploy the application to the cluster setting the deployment mode to stage.
B. Deploy the application to the cluster setting the deployment mode to nostage.
C. Deploy the application to the cluster setting the deployment mode to external stage
D. Deploy the application to each server setting the deployment mode to external stage.
E. Deploy the application to each server setting the deployment mode to stage.
Answer: B
24. What are the characteristics of a singleton service?
A. Services that can run on the entire cluster and can be used for the migration of stateful and stateless services on a machine crash
B. Services that can run on only one instance
C. Services that can run on more than one instance and are automatically migrated if the instance hosting the service fails
D. Services that should be migrated only if the server hosting the service is in an un-restartable state
E. Both b and d
Answer: E
25. A cluster of four Managed Servers is set up for server migration. What are the important steps that need to be taken for a successful server migration in case of a server crash?
A. Configure a java-based Node Manager, multi-home the Managed Servers, set up a Highly Available database, configure the managed server for MSI mode, establish the trust between the machines hosting the migratable servers
B. Configure java or SSH-based Node Manager, set up floating IP for the admin server and four Managed Servers, configure the Managed Server for MSI mode; establish the trust between the machines hosting the migratable servers
C. Configure an SSH-based Node Manager, set up floating IPs for all four Managed Servers, set up a Highly Available Database, configure a Data Source with DataSourceForAutomaticMigration enabled, and establish the trust between the machines hosting the migratable servers
D. Configure SSH-based Node Manager, set up Highly Available database, set up floating IPs for all four Managed Servers, and configure a Data Source with DataSourceForAutomaticMigration enabled. Establish the trust between the machines hosting the Managed Server and Admin server.
E. Configure a java-based Node Manager, set up floating IPs for all four Managed Servers. Set up a Highly Available database, configure a Data Source with DataSourceForAutomaticMigration enabled, establish the trust between the machines hosting the migratable servers and also between the
Admin servers.
Answer: C
26. What are the supported installation modes for WebLogic Server?
A. Graphical mode, console mode and secure mode
B. Graphical mode, console mode and silent mode
C. Script mode, console mode and silent mode
D. Script mode, console mode and secure mode
E. Script mode, network mode and silent mode
Answer: B
27. Which one is true for the Java-based Node Manager?
A. Node Manager process is associated with the specific WebLogic domain.
B. Node Manager cannot start the admin server.
C. Node Manager on one machine can start multiple Managed Servers on different machines.
D. Node Manager on one machine can start multiple Managed Servers on the same machine.
E. Node Manager can start only one Managed Server per machine.
Answer: D
28. How can you access the Node Manager to start and stop Managed Servers? Select three from the following options that are true.
A. Administration console
B. Node Managers console
C. JMX utilities with Admin Server running
D. WebLogic Scripting Tool commands
E. Managed Servers console
Answer: ACD
29. What are the valid Node Manager-defined states for restarting servers? Choose two.
A. FAILED_RESTARTING
B. FAILED_RESTORING
C. FAILED_AUTOKILLED
D. FAILED_NOT_RESTARTABLE
E. FAILED_AUTO_RESTARTABLE
Answer: AD
30. WebLogic Server has a new feature for detecting, avoiding and recovering from an overload condition. Which one of the following is not configurable via overload protection?
A. Overload protection can be used to throttle Work Managers and thread pools for performance.
B. Exit the server on low memory conditions.
C. Shut down the Work Manager or application on stuck threads.
D. Trace and report unauthorized intrusion.
E. Change the server health state to OVERLOADED on overload.
Answer: D
31. Which statement is NOT true about restarting the Managed Servers?
A. Node Manager can start the Managed Server process which was killed via the Ctr+c or kill -9
B. Node Manager can only restart a server that was started via Node Manager.
C. Node Manager can restart the Managed Server in Managed Server Independence (MSI) mode.
D. By default, Node Manager automatically restarts the Managed Server instance under its control
that failed.
Answer: A
32. if you are configuring a Java-based Node Manager, select three options that are applicable to its configuration.
A. You can configure Node Manager as a Windows startup service or Daemon process on a Windows and a UNIX platform, respectively.
B. You can specify Node Manager properties in the command line or in a nodemanager.properties file.
C. Node Manager cannot be configured on a multi-homed system.
D. If you are running more than one Managed Server on a single machine, you must install separate Node Managers for each Managed Server.
E. Properties that you specify for the Node Manager on the command line override the properties in the nodemanager.properties file.
Answer: ABE
33. Which of the following options are true for the Managed Server Independence (MSI) mode? Choose three.
A. By default the MSI mode is enabled.
B. In order for the MSI mode to work, a managed server needs to be started with the Admin server at least once.
C. In MSI Mode with the Admin Server down while starting up the managed server, the configuration information will be downloaded from the Node Manager.
D. In MSI mode, with the Admin server down while starting up the managed server, the managed server obtains configuration using the locally cached configuration information.
E. In MSI mode, with the Admin server down while starting the managed server, the managed server gets the configuration details from any of the other available managed server in the domain.
Answer: ABD
34. Which of the following options are true if the Server is in STANDBY state?
A. The regular listen port is still open.
B. Only lifecycle commands that transition the server instance to either RUNNING or the SHUTDOWN state will be accepted.
C. All the administration requests will be accepted.
D. It still acts as a member of the cluster.
Answer: B
35. Which of the following options are true if a Server is in ADMIN state? Choose two.
A. Deployment or re-deployment is not allowed.
B. It can detect that the other members of the cluster have joined the cluster but it is not available to the other cluster members.
C. The server instance accepts the request only from the users with the ?dmin?role.
D. The server instance in this mode can be transitioned to the SUSPENDING or FAILED state.
E. Administrative operations cannot be performed on the subsystems.
Answer: BC
