what is the difference between yum and dnf
DNF (software) DNF or Dandified YUM[2][3][4] is the next-generation version of the Yellowdog Updater, Modified (yum), a package manager for .rpm-based distributions. DNF was introduced in Fedora 18,[5] and it has been the default package manager for Fedora since version 22.[6]
National Curriculum Framework (NCF 2005) The NCF has aimed at bringing about reforms in the education system to bring about a curriculum that is learner centric, has a flexible process, provide learner autonomy, teacher plays a role of a facilitator, supports and encourages learning, involves active participation of learners, develops multidisciplinary curriculum, focuses on education, brings about multiple and divergent exposure, multifarious, continuous appraisal in educational system.[9]