Pivotal Cloud Foundry (PCF) Certification Exam Review Questions Set 4 - Logging, Scaling and HA
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Question 1
How are logs handled in a twelve-factor app?
A
As local disk files
B
As database entries
C
As application processes
D
As event streams
Question 2
Where should you write your application logs?
A
Database
B
Message queue
C
Filesystem
D
Standard out and standard error
Question 3
Which of the following are NOT one of the fundamental changes impacting cloud application design and delivery?
A
Immutable infrastructure
B
Distributed computing
C
Monolithic architecture
D
Ephemeral infrastructure
Question 4
How do you access application logs?
A
cf target APP_NAME
B
cf scale APP_NAME
C
cf push APP_NAME
D
cf logs APP_NAME
Question 5
Which of the following is not one of four levels of high-availability provided by PCF?
A
Application instances spread across different cells in different availability zones
B
BOSH detects and recreates failed VMs
C
BOSH detects and restarts failed processes
D
CF converger detects and restarts application instances
E
Monit process restarts failed application instances
Question 6
What is the difference between scaling up and scaling out?
A
Scale up does not recreates container. Scale out recreates container.
B
Scale up increases the disk space or memory limit of all instances of an application. Scale out increases the number of instances of an application.
C
Scale up increase the number of instances. Scale out increase the disk space or memory limit of all instances of an application.
D
Scale up requires no downtime. Scale out requires downtime.
Question 7
What cf command can help you tell if your applications has been crashing?
A
cf target
B
cf push
C
cf services
D
cf events
Question 8
Garden is an interface with many implementations, true or false?
A
False
B
True
Question 9
Which component of the Elastic runtime exposes an API for users to manage applications?
A
Loggregator
B
Metron
C
Diego
D
Cloud controller
Question 10
What are the components of the Loggregator system?