A system administrator is monitoring a system that has recently shown a decrease in performance.The administrator suspects that the system may be low on memory and may be paging excessively.Which of the following commands is best to identify a possible paging problem？（） ["iostat","netstat","ps","vmstat"]
病员35岁，男，溃疡病出血，贫血貌，MCV85fL，MCH28pg，MCHC32%，贫血性质（） ["大细胞性贫血","小细胞低色素性贫血","正常细胞性贫血","以上都不是"]
You have the following requirements in relation to the detection of block corruption for your database instance: 1. Check for logical self-consistency of data blocks when modified in memory. 2. Checksums are calculated before and after the block change. 3. Checks are performed for the lost writes to the physical standby database. Which method would help you perform the above checks automatically? （） [" Set the DB_SECUREFILE parameter to PERMITTED"," Set the DB_ULTRA_SAFE parameter to DATA_ONLY"," Set the DB_LOCK_CHECKSUM parameter to TYPICAL"," Set the DB_LOST_WRITE_PROTECT parameter to TYPICAL"]
Which command will display the current control key settings？（） ["’tty-l’","’stty-a’","’lstty-a’","’terminfo-l&rsquo"]
In addition to the partition profile backup, how should the HMC be backed up to provide bare-metal restore capabilities?（） ["Backup critical console data","Backup a bootable image to tape","Create mksysb image and store on a NIM server","Create mksysb image and store on an NFS server"]
光滑极限量规用来检验螺纹的什么尺寸？
