Which of the following commands lists all differences between the disk images vm1-snap.img and vm1.img?

Question

Options

• Avirt-delta -a vm1-snap.img -A vm1.img
• Bvirt-cp-in -a vm1-snap.img -A vm1.img
• Cvirt-cmp -a vm1-snap.img -A vm1.img
• Dvirt-history -a vm1-snap.img -A vm1.img
• Evirt-diff -a vm1-snap.img -A vm1.img

• A
  3% (1)
• B
  13% (5)
• C
  5% (2)
• E
  79% (31)

Explanation

The virt-diff command-line tool can be used to list the differences between files in two virtual machines or disk images. The output shows the changes to a virtual machine's disk images after it has been running. The command can also be used to show the difference between overlays. To specify two guests, you have to use the -a or -d option for the first guest, and the -A or -D option for the second guest. For example: virt-diff -a old.img -A new.img. Therefore, the correct command to list all differences between the disk images vm1-snap.img and vm1.img is: virt-diff -a vm1-snap.img - A vm1.img.

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