Kafka Operations L1 Cert
Kafka Operations Level 1 Certification Quiz
Test your knowledge and skills in Kafka operations with our comprehensive Level 1 Certification Quiz. This quiz is designed for administrators, developers, and IT professionals who are looking to validate their understanding of Kafka operations and troubleshooting techniques.
- 10 challenging multiple-choice questions
- Real-world scenarios and troubleshooting steps
- Instant feedback on your performance
See Image 1 in "References". To investigate this incident, which admin server should you log into? You may use the environments page to determine your answer.
Dcmipph06k001
Dcmidph01k004
Dcmipph12k005
Dcwipph06k001
Which of the following commands would be useful in troubleshooting low disk space issues?
Du -ck |sort -rn |head -10
Ps -ef |grep kafka
Lsof
./check_balance.sh
See Image 2 in "References". Based on this check balance output, which broker should you investigate for issues?
1020
1009
1011
1001
A user is getting the below error in their log. What is the most likely cause?
ClientHandlerException: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
Wrong/missing certs in truststore.jks
Path to keytab incorrect in jaas.conf
Realm not defined correctly in krb5.conf
Topic permissions not grated in Ranger
A user is getting the below error in their log. What is the most likely cause?
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))]
The specified SI account does not exist in the configured domain
User set ZK hostnames and ports instead of Kafka hostnames and ports
User did not configure keystore.jks correctly
Connection to the KDC timed out
What command or method would you use to start MirrorMaker group 3?
Rms.sh start 3
Sudo service MirrorMaker start
Chef-client -o mm_start 3
Start the group through the Ambari UI
What does the below error suggest?
KrbException: Pre-authentication information was invalid (24)
at sun.security.krb5.KrbAsRep.<init>(Unknown Source)
at sun.security.krb5.KrbAsReqBuilder.send(Unknown Source)
at sun.security.krb5.KrbAsReqBuilder.action(Unknown Source)
at sun.security.krb5.internal.tools.Kinit.<init>(Unknown Source)
at sun.security.krb5.internal.tools.Kinit.main(Unknown Source)
Caused by: KrbException: Identifier doesn't match expected value (906)
at sun.security.krb5.internal.KDCRep.init(Unknown Source)
at sun.security.krb5.internal.ASRep.init(Unknown Source)
at sun.security.krb5.internal.ASRep.<init>(Unknown Source)
... 5 more
at sun.security.krb5.KrbAsRep.<init>(Unknown Source)
at sun.security.krb5.KrbAsReqBuilder.send(Unknown Source)
at sun.security.krb5.KrbAsReqBuilder.action(Unknown Source)
at sun.security.krb5.internal.tools.Kinit.<init>(Unknown Source)
at sun.security.krb5.internal.tools.Kinit.main(Unknown Source)
Caused by: KrbException: Identifier doesn't match expected value (906)
at sun.security.krb5.internal.KDCRep.init(Unknown Source)
at sun.security.krb5.internal.ASRep.init(Unknown Source)
at sun.security.krb5.internal.ASRep.<init>(Unknown Source)
... 5 more
The username/password combination used is invalid
The truststore.jks password is incorrect
The wrong port was used in the broker list
The security protocol is not set to SASL_SSL
Which of the following is not a valid option to reset offsets?
To specific offset
Earliest
To Timestamp
All answers are valid options
Select all questions that should be asked when a user wants their offsets reset:
What broker list is being used?
What is the consumer group ID?
Are the offsets being managed externally?
What topic is being used?
What position should offsets be reset to?
How many consumer threads are in the consumer group?
How many partitions are in the topic?
Has the consumer application been stopped?
Has the producer been paused?
Has ITOC been notified?
See Image 3 in "References". You investigate the machine and find that the Kafka service is running. What should you check next?
Check if NGINX is running
Check if the disks are full
Check memory utilization
Run a check balance
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