Let's start today with a quick review of important RAM / ROM / Flash / NVRAM info!

ROM: Read-Only Memory.  ROM stores the switch’s bootstrap startup program, operating system software, and power-on diagnostic programs (POSTs). ROM content is retained on reload.

Flash memory:  Generally referred to simply as “flash”, you’ll find IOS images here.   Flash is erasable and reprogrammable ROM.   Flash content is retained on a reload.

RAM: Random-Access Memory.  Stores operational information such as routing and switching  tables and the running configuration file.   RAM contents are lost when the router is powered down or reloaded.


NVRAM:  Non-Volatile RAM.  NVRAM holds the router’s startup configuration file.  NVRAM contents are not lost on a reload.


Coming In April 2020!




Comments

Post a Comment

Popular posts from this blog

  I'm baaaaack! (hopefully someone noticed I was gone : ) ) Your first free # CCNA Bulldog Practice Exam for today covers important OSPF DR and BDR concepts... and here it is! CCNA Practice Exam: The DR And BDR Two more free exams for you right here later today, and Network+ practice exams return today as well! Chris B. # Cisco # CCNA # BulldogPracticeExam
Read more
Hey Bulldogs! Here's a CCNA 200-301 Five-Minute Video Boot Camp for you on some OSPF strangeness -- and I'll have a new one for you later today! https://www.youtube.com/watch?v=6WD49y_4Fec&t=218s #Cisco #ChrisBryant #BulldogIt
Read more
Hey Bulldogs!  To lead into next month's release of the Ultimate CCNA Practice Exam, I'm posting a new #CCNA exam every day in Nov and Dec.   Here's the latest on, on IPv6 fundamentals, and I'll have another new one for you later today! CCNA 200-301 Practice Exam:  IP Version 6 Fundamentals See you later today with a new exam and several new YouTube videos! Chris B.
Read more