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Tuesday, January 27, 2026

RAM, ROM, and NVRAM

 RAM

Random Access Memory is typically used by an application to store temporary data. This is due to RAM being volatile and is best for data that is being used by an application. The volatile part is that it loses the data when the power is turned off. Random Access Memory can be a faster solution to ROM and NVRAM and is also used by data in use and by the Operating System to process data.

ROM

Read Only Memory is used by data at rest typically and is a slower type compared to RAM. ROM is non-volatile and is used by the computer to do a Power on Self-Test which boots the computer up and tests its functionality before the computer turns on. Because it retains information when the power is off ROM is used to store boot code as well as the firmware.

NVRAM

Non-volatile Random Access Memory is used to track configuration updates for things like routers and switches. As it is non-volatile NVRAM it is used by data that needs to persist like configuration files and security keys. NVRAM is somewhat faster than ROM and uses RAM to get updates to things like configuration files on network devices.

Another type of NVRAM that is used by network devices is called Flash. Flash is used by network devices like switches and routers to store IOS images and larger files that can’t be stored on NVRAM. Regular NVRAM in network devices is more for the configuration files. The switches and routers use Flash as more of a hard drive, as it stores IOS images and larger files.

RAM, ROM and NVRAM

These three types of memory are used in different ways to establish better configuration updates like NVRAM, faster processing like RAM and permanent storage like ROM. Random Access Memory is the fastest with NVRAM being the second fastest compared to the slowest which is ROM. The trade-off with ROM is that it is for things that need to persist like firmware.

Knowledge Byte

Complexity of Information is something that is a pain point in studying for certification exams. The best way to overcome this pain point is to be consistent in your studies and break down the information into bite-sized chunks. This will allow you to retain the information when you are ready for the certification exam.

Conclusion

RAM, ROM, and NVRAM are three types of memory that is an important topic in Information Technology. This concept is something that you can look into further and is a computer hardware component that will be helpful to understand if you are going for the CompTIA Tech+ or A+. Understanding the two types of NVRAM is also useful as you go more into your IT career as learning the difference between Flash and NVRAM will help you out with network devices.

Tuesday, January 20, 2026

Introducing Knowledge Bytes

aarononit.blogspot.com 

This domain is an old domain that is a free domain when it was Blogspot around 2013. I had not posted anything on this website since 2017. Today it was easy to walk in my old shoes, so to speak, as the domain was hooked up to my Blogger account using my Google account. The free domain, aarononit.blogspot.com, has not been used as much so I will be redesigning and posting blog posts on the website.

Populating the content of this blog will be something that I get into more every week. There are some things that will help writing this content and will not be from AI Agent or Chatbot. The way that I approach my writing is by getting into a flow state and just write and rewrite a few times, editing along the way.

Focus of the Blog

This blog will be about information technology including pain points that happen with studying for certification exams in general. The blog, aarononit.blogspot.com, will also have knowledge bytes that are some facts about either information technology or facts about pain points in studying for certifications.

Knowledge Byte

This is the first knowledge byte that I will do to have facts about Information Technology or some pain points studying for IT certifications. The knowledge byte today is the fact that studying for certifications can bring with it some anxiety, which is a completely normal thing unless it is excessive or is about worrying too much. The way to defeat anxiety is to take a daily multivitamin, eat healthier and exercise. You can develop good habits to develop some resistance to anxiety.

Aaron W. DeJong

My sole proprietorship, Aaron W. DeJong, is doing this website, where I will be posting regularly on Tuesday’s at 2:05pm MST for this domain. The mission of Aaron W. DeJong is to help alleviate pain points with studying for certification exams, in particular Computer Networking and Cybersecurity exams. We do this through blogs and articles along with free study plans and other content marketing related to the mission.

If you are interested in the schedule that I have for writing blog posts I have aaronwdejong.net on Friday’s, aaron597.com on Saturday’s, mrcertification.tech will be on Monday’s and aarononit.blogspot.com is on Tuesday’s starting with this blog post. I am working on my business plan, and it will need some more attention before I post it on LinkedIn.

Conclusion

The first blog that I did was on this domain, aarononit.blogspot.com. I wasn’t doing it consistently and didn’t have good content as it was more about the news in 2017. I was not sure how to write a blog back then. This domain will be something that I do in my sole proprietorship, Aaron W. DeJong as a hobby website or a side project for me to work on.

This website is something that is not costing me any money and will enable my messaging to come out in another channel. My sole proprietorship is something that I can scale with the four blogs and continue to work on articles which will be in a longer format than the blog posts.


Welcome Back

This post is the first blog post that I have made on this domain since 2017. I am doing this to extend my sole proprietorship's reach and to connect with the past items that I have talked about on this blog. There is some content that I will be putting on this website to use a free domain that I have used last in 2017. Welcome back guys and I hope that I can help guide you in your journey towards mastery in Information Technology concepts.