Practice Free H12-621_V1.0-ENU Exam Online Questions
Which mechanism enables automatic service takeover when a cluster node becomes unavailable?
- A . Manual restart
- B . Failover
- C . Load concentration
- D . Resource throttling
Which characteristics apply to Ansible automation? (Select all that apply)
- A . Agentless architecture
- B . Uses SSH for communication
- C . Requires a persistent agent
- D . Supports declarative configuration
- E . Limited to single hosts
Which outcomes indicate effective automation implementation? (Select all that apply)
- A . Reduced configuration drift
- B . Faster recovery times
- C . Increased manual intervention
- D . Consistent deployments
- E . Unpredictable results
Redis is commonly used in openEuler clusters as an in-memory data store to improve application performance.
- A . True
- B . False
What is the main advantage of shared storage in clustered environments?
- A . Reduced network usage
- B . Centralized data access
- C . Lower CPU consumption
- D . Faster OS boot time
Which service is commonly used on openEuler to provide reverse proxy and load balancing capabilities for web applications?
- A . Apache HTTP Server
- B . NGINX
- C . MySQL
- D . DNSMASQ
Which tool is commonly used on openEuler to monitor system performance metrics such as CPU and memory usage?
- A . Zabbix
- B . FTP
- C . Telnet
- D . SCP
Security hardening is a one-time activity performed only during system installation.
- A . True
- B . False
Which benefits does automation bring to system operations? (Select all that apply)
- A . Reduced manual errors
- B . Faster deployment
- C . Increased configuration drift
- D . Improved consistency
- E . Higher administrative overhead
Which practices contribute to OS security hardening? (Select all that apply)
- A . Applying security patches
- B . Enabling SELinux
- C . Allowing all open ports
- D . Strong password policies
- E . Disabling logging