An administrator needs to upgrade the IOS in a router to a version that supports new features. Which factor should the administrator consider before performing the upgrade?

Question:
An administrator needs to upgrade the IOS in a router to a version that supports new features. Which factor should the administrator consider before performing the upgrade?

• NVRAM must be erased before the new IOS can be installed.
• The old IOS should be backed up to NVRAM so that it is not lost during a power failure.
• The new IOS might require more RAM to function properly.
• The old IOS must be removed first.

Exam with this question: CCNA 1 (v5.1 + v6.0) Practice Final Exam Answers