Sno                   DNF              YUM                                    RPM1Written in C and PythonWritten in pythonWritten in C and Perl2DNFs uses libsolv for dependency resolution which was created and maintained by SUSEYUM uses public API for dependency resolutionRPM does not provide dependency resolution3Dependency resolution is fast and easy making installation of groups of packages very simpleDependency resolution is slower as compared to dnf but is still fairly straightforwardDue to lack of dependency resolution installation of software applications having multiple dependency requirements is very tediousDoes not require dependent packages to be available locallyDoes not require dependent packages to be available locallySince rpm cannot resolve dependencies on its own, it needs all dependent packages for a package to be available locally on the system in the same folder as that of the concerned package4DNF supports more extensionYUM support only Python for extensionRPM functionality can be extended somewhat using C5Multiple packages can be installed with a single commandMultiple packages can be installed with a single commandCan be used to install multiple .rpm package files in a single command provided there are no dependency issues6DNF has a well-documented API making adding new features easyBuilding new features in yum is not as straightforwardBoth yum and dnf use rpm under the hood for underlying package management operationsCan connect to online or remote repositories to search for packagesCan connect to online or remote repositories to search for packagesRpm tool cannot connect to online repositories7DNF uses lower memory reduction and less automatic synchronization of metadata with repositoriesYUM uses high memory reduction and automatic synchronization of metadata with repositoriesNot applicable since rpm does not provide the ability to connect to online repositories8DNF allows all installed packages to be updated with a single command: dnf updateYUM allows all installed packages to be updated with a single command: yum updateRPM does not provide this feature. To update a .rpm package using RPM, the updated .rpm file for the concerned package must be available locally on the system. To update the package, use rpm -Uvh <.rpm file name>9If a package has unmet dependencies during a dnf update action, that package will not be updated.With yum it is possible to update to a package that has unmet dependencies using the –skip-broken optionA package update using rpm will fail if any package dependency has not been met10If enabled repository does not respond, dnf will skip it and continue the transaction with the available reposYUM will not proceed if a repository is unavailableNA11dnf update and dnf upgrade are equivalentyum upgrade Is the same as the yum update command with the –obsoletes flag setNA12Dependencies are not upgraded on package installationIt is possible to upgrade dependencies during package installation while using yumRPM requires that a compatible version of the dependent package be available on the system. It will install an updated dependent package provided there are no compatibility issues13Clean on remove: When removing a package, dnf will automatically remove any dependent packages that were not explicitly installed by the user.Yum will not remove dependencies during package removalRpm will not remove dependencies during package removal14kernel packages are not protected by dnf meaning you can remove all kernel packages, including the running packageYum will not allow this behaviorRpm will error out if you try to remove the kernel package since other packages are dependent on it15DNF uses separate libraries for interacting with repositories and dependency resolutionYum does not use separate libraries for such functionsNA16Allows parallel operationsDoes not allow parallel operationsAllows parallel operations17Can work with both python versions 2 and 3Compatible with python version 2 onlyDoes not rely on python18Default package manager for FedoraDefault package manager for most Redhat based distributionsInstalled by default on almost all Redhat based distributions