asked on

ISO/OSI model: A few questions about computer networks

Hello,
I am currently working on computer networks and would have a few questions about it. I have already used Google, but I found it to be so complicated that I did not understand it. Can you answer my questions in simple words?
Most questions areabout the ISO/OSI model.

THANK YOU VERY MUCH

1) What is the difference between a logical and a physical topology?
2) What are the tasks of the firewall? What is the difference between a firewall and antivirus?
3) A firewall filters MAC addresses, IP addresses and port numbers. What exactly does filtering mean? How, when and why is a firewall filtering?
3) What is the difference between horizontal and vertical communication?
4) What are examples of horizontal and vertical communication?
5) When is communication horizontal and when is communication vertical?
6) Is a service just a task? What are example of services?
7) What are (service) primitives (request, indication, response and confirmation) used for?
8) When do these (service) primitive request, indication, response and confirmation occur?
9) What is a service access point in simple words?
10) What is this IEEE 802.XY all about? What does that mean?

ASKER CERTIFIED SOLUTION

Christian KAZADi

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

SOLUTION

noci

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

Robert Retzer

Also it would be best to buy a good book on networking, this will be a time savor instead of trying to browse the internet trying to find something you can understand. When you buy a book the book will have the answer to your networking questions. If you find much of the stuff online over your head an easy read would be the Dummy series of books, they are very well written and are written for the layman. I have several of the Dummy Series of books in my library they go through hundreds of different topics, computers, networking, windows 10, mac operating systems, or even other topics such as gardening, health, car repair, etc.
Here is the link for the book on networking..... https://www.dummies.com/programming/networking/networking-for-dummies-12th-edition/

noci

For books on networks there is one notable source:
Andrew S Tanenbaum, Computer Networks
Also (IP only)
D. Comer, Interneworking with TCP/IP.