![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
将光盘/DEv/hDC卸载的命令是()。
A.umount/DEv/hDC
B.unmount/DEv/hDC
C.umount/mnt/CDrom/DEv/hDC
D.unmount/mnt/CDrom/DEv/hDC
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.umount/DEv/hDC
B.unmount/DEv/hDC
C.umount/mnt/CDrom/DEv/hDC
D.unmount/mnt/CDrom/DEv/hDC
A.vgreduce data /dev/sdb
B.vgcreate data /dev/sdb
C.vgadd data /dev/sdb
D.vgextend data /dev/sdb
A.mkfs -t ntfs /dev/nvme3n1p3
B.mkfs -t ntfs /dev/nvme4n1p2
C.mkfs -t ntfs /dev/nvme3n1p2
D.mkfs -t ntfs /dev/nvme4n1p3
A.卸载磁盘umount /dev/vxdb1
B.fdisk /dev/xvdb输入d输入分区编号删除分区
C.fdisk /dev/xvdb输入n输入和删除一样的分区编号创建分区
D.resize2fs /dev/xvdb1调整“/dev/xvdb1”的大小,重新挂载分区
A.pvcreate -f /dev/rdsk/c0t0d0
B.pvcreate –f /dev/dsk/c0t0d0
C.pvcreate -B /dev/dsk/c0t0d0
D.pvcreate -F vxfs /dev/dsk/c0t0d0
A.fdisk -l /dev/hda1
B. fdisk -l /dev/hdb2
C. fdisk -l /dev/hdb
D. fdisk -l /dev/hda
下列哪个命令可以用来增加阵列设备md0中的磁盘数量
A mdadm—add/dev/md1/etc/sdd1
B mdadm—add/dev/md1/dev/sdd1
C mdadm—add/dev/md0/etc/sdd1
D mdadm—add/dev/md0/dev/sdd1
A.ls-lfile01file021>stdout.txt2>/dev/zeros
B.ls-lfile01file02&>stdout.txt2>/dev/null
C.ls-lfile01file02&>stdout.txt1>dev/null
D.ls-lfile01file022>dev/null1>stderr.txt
A.backup-p/var-ivf/dev/rmt0
B.find/var|backup-ivf/dev/rmt0
C.cd/var;backup-p.-ivf/dev/rmt0
D.cd/var;find.|backup-ivf/dev/rmt0
A.mount/dev/sda
B.mount/data
C.echo"/dev/sdb/data1xfsdefaults00">>/etc/fstab&&mount-a
D.umount/data