1. Which command would you give to update all installed packages using yum?

$yum check

$yum update

$yum check

$yum install

2. Suppose under your home directory there is a folder called objects,which contains three files: file1.o, file2.o, file3.o

Now you are under the directory of objects.

If you want to archive the three files to a location called /tmp/object.cpio.

The commands should be:

$ ls | cpio ov > /tmp/object

$ ls | cpio ov > /tmp/object.cpio

$ ls | cpio ov < /tmp/object.cpio

$ ls | cpio ov >> /tmp/object.cpio

3. Which of the following protocol is not supported by CUPS

IPP

LPD

UDP

LPR