Just check this
First.
# dnf update
Dependencies resolved.
Nothing to do.
Second.
# yum update
Loaded plugins: langpacks, refresh-packagekit
Resolving Dependencies
<SKIP>
Transaction Summary
=============================================
Upgrade 2 Packages
Total download size: 15 M
Is this ok [y/d/N]:
Exiting on user command
What wrong with dnf?
-------------------------------------
Dmitrij