Page 3 of 24 FirstFirst 12345678910111213 ... LastLast
Results 21 to 30 of 237
  1. #21
    IT Manager 5,000+ Posts bsm2's Avatar
    Join Date
    Feb 2008
    Location
    USA
    Posts
    6,091
    Rep Power
    91

    Re: Need some advice on learning networking

    Quote Originally Posted by slimslob View Post
    Can you tell me what Computer Science and Engineering degrees you hold? AS? BS? MS? PHD?
    Yours? what MS or CompTia certifications?

  2. #22
    Service Manager 1,000+ Posts
    Need some advice on learning networking

    BillyCarpenter's Avatar
    Join Date
    Aug 2020
    Location
    Long Beach, Mississippi
    Posts
    1,369
    Rep Power
    48

    Re: Need some advice on learning networking

    I'm gonna pull an all nighter working on this stuff and hopefully I'll wake up just in time to watch football.


    I'm starting to grasp the OSI Model. Already it's helped me greatly. It really paints a clear picture of how data is transported from one device to another and the processes involved. For instance: on the "Transport Layer" it facilitates end-to-end communication between multiple applications simultaneously.

    How does it do this? By using ports. Each application uses a specified port So it functions as a multiplex system. In other words, you can have multiple data streams working at the same time.


    EDIT: Luckily I took a 2-year course on computer technology back in the day. That really helps out a lot. I know bits, bytes, multiplexing, ect. ect. If not for that, I'd be lost.

  3. #23
    Service Manager 1,000+ Posts
    Need some advice on learning networking

    BillyCarpenter's Avatar
    Join Date
    Aug 2020
    Location
    Long Beach, Mississippi
    Posts
    1,369
    Rep Power
    48

    Re: Need some advice on learning networking

    This may be boring to some but I find it fascinating.

    Just going thought the OSI model and learning about Encapsulation and Decapsulation.

    What does it mean.

    It means as data works it way thru the 7 OSI layers that headers are added to the data for routing and other purposes. Once all the headers are added the data is ready to be sent to another device. When it reaches the destination device the headers must be stripped away...or in other words - "decapsulation." Once it's decapsulated, you're left with nothing but the raw data for the application that you're using...a webpage for example.

  4. #24
    Field Supervisor 500+ Posts
    Need some advice on learning networking

    n25an's Avatar
    Join Date
    Jul 2008
    Location
    miami, florida
    Posts
    995
    Rep Power
    38

    Re: Need some advice on learning networking

    if you want a nice general approach to it with some good troubleshooting ideas... go look up google it support professional certificate... constantly evolving it is... but the course is quite detailed and taught by google guys... if you want to pay for it goto coursera... but you can get it on youtube for free Full-Google IT Support Professional Certificate - YouTube



    and they really take you through the osi and how to understand it...
    but you don't need to understand osi to fix copier network issues...
    (case in point I only learned about that stuff 4 years into fixing it issues and never found it relevant...)
    thats way too deep...
    nice to know...
    but way too deep...

    the most you need is wireshark to understand the handshakes so you can know when they are missing...
    (by the way best tool to have but hard to find is an old network hub... this way you can listen in on what copier and pc are saying to each other via wireshark)

    handshake... like ping... you ping an ip address and you get a response... the response is the reply... the act of pinging and getting a response is an example of a handshake... you say hi... guy says hi... you make a deal you shake on it... you will go through a lot of those in IT but its all under the hood... if you know whats going on... then you can tell what went wrong...

    So, I'm going through the TestOut labs and it's going pretty good and then I get to the OSI layer. This is kind of hard to grasp and TestOut does a crappy job of explaining it in a meaningful way. I had to go to Youtube to get a deeper understanding. I'm not there yet but this seems very important. Maybe not so much for copiers but then again, it can't hurt to know this stuff.
    Sad To Say I Don't Have a Life
    I do this stuff on the weekends too

  5. #25
    Field Supervisor 500+ Posts
    Need some advice on learning networking

    n25an's Avatar
    Join Date
    Jul 2008
    Location
    miami, florida
    Posts
    995
    Rep Power
    38

    Re: Need some advice on learning networking

    comptia a+ and N+ does open doors to govt work in copier field and outside of it... so don't discount it...
    you need an a+ to work on the toll road equipment in florida... nice paying job simple and time consuming...
    and thats just one of many places... the good thing is if you get work that require them... they give you six months to a year to get certified...

    Quote Originally Posted by bsm2 View Post
    The BIG difference in being CompTia certification is
    Some companies require it. Government installs
    Also if YOU F up there equipment Guess Who's going to have to pay to fix it. IE your guy touched our server and now we have an issue.
    Is it the copier or a network issue
    What to touch and what NOT to touch
    Working with there IT it helps if you know your SHIT.


    IE did an install there IT could not get scan to email it work. No problem right? After several times making changes and Knowing the correct settings found out there network had an additional layer of security that was blocking email.

    Know the difference between ssl/tls , scan to email of scan to ftp and how to setup each one.
    How to setup scan to email and troubleshoot problems

    OSI layer is hard to learn do you need it for copier installs no but you need to know the difference between a switch and router. Cable types cat 5 vs cat 6

    IT sounds and looks easy it's NOT.

    I would walk in and fix the problem within 15 min I make it look too easy
    Just like a would tell my boss it's Not that easy
    I just know my shit because I'm trained
    Sad To Say I Don't Have a Life
    I do this stuff on the weekends too

  6. #26
    Service Manager 1,000+ Posts
    Need some advice on learning networking


    Join Date
    Nov 2007
    Location
    New Jersey
    Posts
    1,041
    Rep Power
    50

    Re: Need some advice on learning networking

    Try using Professor Messer's videos online, they are all free. There are videos for each module. Go watch the one for the OSI model, he helps make it easy to understand.

  7. #27
    Retired 10,000+ Posts slimslob's Avatar
    Join Date
    May 2013
    Location
    Bakersfield, CA
    Posts
    12,659
    Rep Power
    316

    Re: Need some advice on learning networking

    Quote Originally Posted by bsm2 View Post
    Yours? what MS or CompTia certifications?
    Just what I thought. Just like 99.9% of IT people that I have known you are all hot air and no substance. I usually end up having to solve the problems for them. Years of experience is worth a lot more than any certification. And if there is anything that I need additional information on, I have direct access on a daily basis to one of the leading computer science professors in the USA.

  8. #28
    Geek Extraordinaire 2,500+ Posts KenB's Avatar
    Join Date
    Dec 2007
    Location
    Cleveland, Ohio
    Posts
    3,278
    Rep Power
    90

    Re: Need some advice on learning networking

    Quote Originally Posted by BillyCarpenter View Post
    I'm gonna pull an all nighter working on this stuff and hopefully I'll wake up just in time to watch football.


    I'm starting to grasp the OSI Model. Already it's helped me greatly. It really paints a clear picture of how data is transported from one device to another and the processes involved. For instance: on the "Transport Layer" it facilitates end-to-end communication between multiple applications simultaneously.

    How does it do this? By using ports. Each application uses a specified port So it functions as a multiplex system. In other words, you can have multiple data streams working at the same time.


    EDIT: Luckily I took a 2-year course on computer technology back in the day. That really helps out a lot. I know bits, bytes, multiplexing, ect. ect. If not for that, I'd be lost.
    Try installing Wireshark and experiment. Itís totally free, and can run on Windows, Mac, or Linux.

    There are some really good training videos on YouTube for Wireshark.

    Itís not enough to just be able to run a capture; you need to understand what itís trying to tell you.

    Iíve used it many times over the years, and sniffed out some really goofy issues.

    Note: Do NOT just ďup and run itĒ at a customer site without their knowledge, as some of them wonít allow it. I got myself in deep do-do that way once.
    Some days youíre the dog, some days youíre the fire hydrant.

  9. #29
    Service Manager 1,000+ Posts
    Need some advice on learning networking

    BillyCarpenter's Avatar
    Join Date
    Aug 2020
    Location
    Long Beach, Mississippi
    Posts
    1,369
    Rep Power
    48

    Re: Need some advice on learning networking

    After about 5 hours of really studying the OSI model, I'm gonna give my honest assessment:

    I think the OSI model is the foundation to understanding networking. I do think it a very valuable tool when troubleshooting a network. Now, if a person has years of experience, he probably doesn't think about it because it's become 2nd nature to him....he's been there done that. But for anyone that's new to networking, I think you should learn it. What is does is it gives you a blueprint for isolating the problem.

    All OSI is is a logical flow chart that separates each job of the networking process from beginning to end. Understanding this will allow you to figure out where the problem lies. Or it narrows it down.


    Disclaimer: I reserve the right to change my mind once I try to apply it in the real world.

  10. #30
    Service Manager 1,000+ Posts
    Need some advice on learning networking

    BillyCarpenter's Avatar
    Join Date
    Aug 2020
    Location
    Long Beach, Mississippi
    Posts
    1,369
    Rep Power
    48

    Re: Need some advice on learning networking

    Quote Originally Posted by KenB View Post
    Try installing Wireshark and experiment. Itís totally free, and can run on Windows, Mac, or Linux.

    There are some really good training videos on YouTube for Wireshark.

    Itís not enough to just be able to run a capture; you need to understand what itís trying to tell you.

    Iíve used it many times over the years, and sniffed out some really goofy issues.

    Note: Do NOT just ďup and run itĒ at a customer site without their knowledge, as some of them wonít allow it. I got myself in deep do-do that way once.

    That's high on my list of things to learn, Ken. If I have any questions, can I ask you?

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Get the Android App
click or scan for the Copytechnet Mobile App

-= -= -= -= -=


IDrive Remote Backup

Lunarpages Internet Solutions

Advertise on Copytechnet

Your Link Here