A. In the performance test-reliability test, there are tests for virtual machine migration, including hot migration, cold migration, migration duration, Duration of business interruption.

B. Hot migration is the migration of virtual machines running from one host to another king machine, business will not occur during the migration process Break.

C. both hot and cold migrations will migrate memory and disk data

D. Cold migration is to migrate a virtual machine in a stopped state from one host to another host, and business will be interrupted during the migration process.

A. memory reuse single technology includes memory bubbles, memory swap and memory sharing

B. memory reuse function is enabled, the memory reuse rate is inversely proportional to the actual memory usage of each virtual machine.

C. memory reuse technology can make the total memory used by virtual machines larger than the total memory of physical server specifications After the

D. memory reuse technology can make the sum of virtual machine memory specifications larger than the sum of physical server specifications \

A. Turning off memory reuse requires that the memory reuse rate of all hosts in the cluster is less than or equal to 100%

B. The administrator can enable or disable the memory reuse function at any time.

C. After the memory reuse function is turned off, the internal sum of all virtual machines is less than or equal to the total available physical memory

D. Using memory reuse can degrade virtual machine performance

A. Agile application development and life cycle management

B. Standardization and automation of resource services

C. Focus on virtualization products

D. Use virtualization technology to improve resource utilization

A. file system

B. Network interface

C. Volume management module

D. Status verification module

A. Hypervisor runs directly on physical hardware

B. Both applications and virtual machines can run directly on the Host OS

C. Application cannot run directly on Host Machine

D. Applications can run directly on VMM

A. Security group rule changes need to be manually applied to virtual machines in the security group

B. The premise of deleting a security group is that there are no virtual machines in the security group

C. must create a security group before adding rules

D. security group denies all by default before adding rules

A. untagged the data frame with VLAN 10 tag passing the port group and forwarded it

B. Drop data frames passing the port group with a non-VLAN 10 tag

C. Data frames passing the port group with a VLAN 10 tag are re-labeled with a VLAN ID and then forwarded.

D. VLAN 10 tagged data frames passing through this port group are forwarded

A. Volume

B. Value

C. Varitey

D. Valid