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