Which of the following options best justifies why a DNS server should be run in a large network system？（） To use ftp and telnet。 To perform NFS mounts。 To make /etc/hosts files unnecessary。 To reduce network traffic and save bandwidth。
下面哪一种爆炸属于物理爆炸。（） 粉尘与空气混合物爆炸；。 液化石油气与空气混合物爆炸。 炸药爆炸；。 液化石油气瓶超压爆炸。
While an electrician was adding additional circuits for the Data Center， the system running the Database inadvertently powered down. The fallover of the service IP labels and volume groups to the hot standby node completed as expected； however， the database did not start. The database log file indicated that the database was already started. What is the most likely cause of this problem？（） The shared logical volumes and filesystems did not have database permissions.。 There was a test instance running on the standby system that must be shutdown.。 The tablespaces had an indicator indicating that the database had not shutdown properly.。 The startup script for the highly available instance did not first perform cleanup operations.。
根据动机归因理论，属于可控的内在因素是（） 能力高低。 努力程度。 身心状态。 运气。
With a scalable volume group, where is the logical volume control information stored on the disk?（） In the ODM。 In the volume group descriptor area。 In the first 512 bytes of the logical device。 In the first block of the user data within the LV。
Because of performance problems， capacity needs to be added to a paging space named
paging01 on hdisk1. The physical partition size of hdisk1 is 4MB.
Which command will increase the size of paging01 by 100MB（）
