C1000-058 sample questions

Question 1

An administrator is analyzing a high-throughput system where a batch application puts millions of small, persistent messages to a queue. Performance monitoring shows that the queue manager's log write latency is the primary bottleneck. The application cannot be changed to use non-persistent messages. The current application logic puts one message at a time and immediately issues a commit. The administrator wants to improve performance by changing how messages are grouped into units of work, without altering the queue manager's log configuration.

Which change will provide the most significant performance improvement for this scenario?

sequenceDiagram participant App as Batch Application participant QM as Queue Manager loop For each message App->>QM: MQPUT (Persistent) App->>QM: MQCMIT end

Accepted Answer

Modify the application to put a batch of messages (e.g., 1000 messages) under a single syncpoint before issuing an MQCMIT.

Answer

Modify the application to put messages outside of syncpoint using the `MQPMO_NO_SYNCPOINT` option.

Answer

Increase the `LogBufferPages` attribute on the queue manager to cache more log records in memory before writing to disk.

Answer

Set the `DEFPSIST` attribute on the target queue to NO to reduce logging overhead.

Question 2

A system administrator is configuring a new IBM MQ V9.1 cluster to support a high-volume retail application. The requirement is to ensure that if the primary full repository becomes unavailable, the cluster remains fully operational for existing members. The administrator has defined two full repositories: QM_REPO_A and QM_REPO_B.

What is the minimal channel configuration required on a new partial repository queue manager, QM_PARTIAL_1, to join this cluster effectively?

Accepted Answer

Define one CLUSSDR channel pointing to either QM_REPO_A or QM_REPO_B, and one CLUSRCVR channel for the cluster.

Answer

Define one CLUSSDR channel pointing to QM_REPO_A and one CLUSSDR channel pointing to QM_REPO_B.

Answer

Define two CLUSRCVR channels, one for each full repository, and no CLUSSDR channels.

Answer

Define a CLUSSDR channel to QM_REPO_A and a SENDER channel to QM_REPO_B.

Question 3

An administrator is tasked with securing a sensitive HR queue manager. The security policy mandates that no application can connect unless it explicitly provides a user ID and password that matches the local OS registry. Furthermore, this check must be enforced for all client connections, regardless of the channel definition.

Which configuration achieves this global enforcement?

Accepted Answer

ALTER QMGR CONNAUTH('SYSTEM.DEFAULT.AUTHINFO.IDPWOS') and ALTER AUTHINFO('SYSTEM.DEFAULT.AUTHINFO.IDPWOS') AUTHTYPE(IDPWOS) CHCKCLNT(REQUIRED)

Answer

SET CHLAUTH('*') TYPE(ADDRESSMAP) ADDRESS('*') USERSRC(CHANNEL) CHCKCLNT(REQUIRED)

Answer

ALTER QMGR CHLAUTH(ENABLED) and DEFINE CHANNEL('SYSTEM.DEF.SVRCONN') CHLTYPE(SVRCONN) MCAUSER('NOACCESS')

Answer

ALTER QMGR SSLCAUTH(REQUIRED) and ensure the key repository contains the trusted CA certificates.

Question 4

A logistics company uses a Red Hat Enterprise Linux server to host a queue manager QM_LOGISTICS. The administrator needs to configure the queue manager to start automatically when the server boots. The system uses systemd.

Which approach is the valid IBM MQ V9.1 method for achieving this?

Accepted Answer

Create a systemd unit file (e.g., `mq@.service`) that executes `strmqm` and `endmqm`, and enable it using `systemctl enable mq@QM_LOGISTICS`.

Answer

Add the `strmqm QM_LOGISTICS` command to the `/etc/rc.local` file.

Answer

Use the `crtmqm_service` command to generate a systemd unit file.

Answer

Set the `Startup=Automatic` attribute in the `qm.ini` file under the `Service` stanza.

Question 5

During a migration planning session, an architect asks about the difference between IBM MQ Continuous Delivery (CD) and Long Term Support (LTS) releases regarding fix packs and support duration.

Which statement accurately describes the LTS release model?

Accepted Answer

LTS releases are supported for a minimum of 5 years (plus optional extension) and fix packs primarily contain defect fixes and security patches, not new features.

Answer

LTS releases receive new functional enhancements in every fix pack and are supported for 12 months.

Answer

LTS releases are released every quarter and require an immediate upgrade to the next version to maintain support.

Answer

LTS releases cannot be installed on the same server as CD releases.

Question 6

An administrator observes that the `/var/mqm/errors` directory is consuming excessive disk space due to a large number of FDC files generated by a repeating error. The administrator needs to stop the generation of FDC files for this specific probe ID temporarily while investigating the root cause. Which configuration change should be applied?

Accepted Answer

Add an entry to the `mqs.ini` or `qm.ini` file under the `Diagnostic` stanza: `SuppressMessage=AMQ9999`.

Answer

Edit the `qm.ini` file and add a `Diagnostics` stanza with `SuppressProbe=XX12345`.

Answer

Use the environment variable `AMQ_SUPPRESS_FFST` set to the specific probe ID before starting the queue manager.

Answer

Run the command `strmqtrc -x XX12345` to exclude the probe.

Question 7

A developer needs to configure a JMS Connection Factory in IBM MQ that connects to a multi-instance queue manager QM_HA. The queue manager runs on host1 (port 1414) and host2 (port 1414).

Which connection list syntax is correct for the CONNECTIONNAMELIST property?

Accepted Answer

host1(1414),host2(1414)

Answer

host1:1414;host2:1414

Answer

host1|1414,host2|1414

Answer

CONNECT(host1:1414) OR CONNECT(host2:1414)

Question 8

An administrator is setting up a Replicated Data Queue Manager (RDQM) for Disaster Recovery (DR) between two sites. The primary site is 'SiteA' and the recovery site is 'SiteB'. The synchronization link has been established.

Which command must be run on the primary node to configure the DR role initially?

Accepted Answer

crtmqm -rr p -rl 192.168.1.1 -ri 192.168.2.1 QM_DR

Answer

rdqmdr -m QM_DR -t primary -s SiteA

Answer

crtmqm -sx -dr SiteB QM_DR

Answer

strmqm -dr primary QM_DR

Question 9

A financial application requires a strictly ordered message flow where 'Request' messages must be processed before 'Update' messages. The messages are being sent to a cluster queue APP.QUEUE hosted on three queue managers.

Which configuration ensures that all messages from a specific sending application instance are routed to the same destination queue manager to maintain order?

Accepted Answer

Set `DEFBIND(OPEN)` on the cluster queue definition.

Answer

Set `DEFBIND(NOTFIXED)` on the cluster queue definition.

Answer

Use the `MQOO_BIND_ON_GROUP` option in the application code.

Answer

Configure the Cluster Workload Exit to return `MQXCC_SUPPRESS_EXIT`.

Question 10

Case Study: Global Retailer 'ShopFast' **Background** ShopFast is migrating its inventory system to IBM MQ V9.1. They operate two data centers: New York (NY) and London (LDN). The network between them has high latency (approx 80ms). **Requirement** Applications in NY need to send stock updates to LDN. The updates are critical; no data loss is permitted. However, the NY application cannot block waiting for confirmation from LDN due to the high network latency. The solution must ensure that once the NY application commits the message locally, it is guaranteed to reach LDN eventually. **Constraint** The disk storage in NY is high-performance SSD, while LDN uses standard HDD. Which channel and queue configuration best meets these requirements?

Accepted Answer

Configure a SENDER/RECEIVER channel pair. The NY application puts persistent messages to a remote queue definition pointing to LDN. The SENDER channel uses `BATCHSZ(50)` and `NPMSPEED(NORMAL)`.

Answer

Use a Client connection from NY directly to the LDN queue manager. Enable `MQPMO_SYNCPOINT` in the application.

Answer

Configure a CLUSSDR/CLUSRCVR pair with `NPMSPEED(FAST)`. The NY application uses non-persistent messages to avoid disk I/O latency.

Answer

Configure a SERVER/REQUESTER channel pair initiated from LDN. Set the transmission queue in NY to `DEFPSIST(NO)`.

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