The list of skills tested in the exam is at http://www.redhat.com/en/services/tr...tor-rhcsa-exam
. I would think that the main differences between 6 and 7 are
- starting services: RHEL 7 uses systemd, which is very different from the way it was done in RHEL 6. But perhaps not that different at the level that is tested.
- grub2 in RHEL 7 versus grub legacy in RHEL 6
- network management: RHEL 7 may use different interface names, uses a better NetworkManager and has tools like nmcli.
From memory: One subject that seems to have been taken out is LUKS (filesystem encryption).
I passed the RHCSA exam for RHEL 6 without any problem, only based on Jang's book. If you feel confident that you can learn the three above points independently, for example with the help of https://access.redhat.com/documentat...prise_Linux/7/
, you can risk it.