Functionkey

Transmiting change, become a fan

Supetech
09 November 2017
Functionkey
As the reach of the IT department becomes wider we focus on maintaining a grasp of the hard skills:...
Supetech
07 November 2017
Functionkey
Functionkey Inc. is a 501(c)3 non-profit organization focusing on core concepts needed to be competitive in the IT field. We believe that mastery of scripting virtualization and server technology are key foundations needed to master all areas of Info...
CLI Guy
07 November 2017
Networking
Subnetting allows a large network block to be logically segmented into multiple smaller networks, or subnets. The use of many smaller networks allows the use of varying physical networks, such as Ethe...

 

Functionkey Inc.

Functionkey Inc. is a 501(c)3 non-profit organization.

Software Defined Networking vs Traditional Networking

Software-Defined--Networking

Traditional Networking is made up of a control plane, and data plane where the control and data planes are combined each into the network elements making up the network. This creates a limitations, because the control plane, and data plane normally resides in the individual routers and switches. Any changes in the network topology (ie: links or routing/switching devices going up/down) will have to be communicated to the other network elements. This causes a propagation delay that gets longer as the network grows.  A new set of networks known as programmable networks have emerged as a solution to this problem.

Continue reading
18 Hits
0 Comments

Networking Terms & Concepts

switches-and-routers

What You Need to Know - These basic networking concepts will be foundation from which we will build on:

 

OSI model

The Open Systems Interconnection (OSI) model defines seven different functional layers:

physical data link network transport session presentation application

This model allows network engineers and network vendors to easily discuss and apply technology to a specific OSI level.

Continue reading
34 Hits
0 Comments

Active Directory Part 2 of 5

SDN_NFV_Moving_the_Network_into_the_Cloud_Chris_Donley

Active Directory domains are named using the Domain Name System (DNS) namespace. You can group domains that are part of the same contiguous DNS namespace within the same domain tree.

Active Directory - Group Polices Printing - Part-2.1

Continue reading
35 Hits
0 Comments

Active Directory Part 1 of 5

Active_Directory

Active Directory - Group Polices Printing - Part-1.1

In this multi part lession we will work along with the instructor as we setup Microsoft’s Active Directory (AD) envirornment using Virtualbox.

Continue reading
154 Hits
0 Comments

What is Linux?

linux_systems
Linux is an complete operating system like Windows. Linux is an open operating system and that means it is free. Linux runs on thousands of hardware devices. A really cool thing about Linux is the it was built to enable multiple users to access the system simultaneously. To protect the individual user's environment, ev...
Continue reading
118 Hits
0 Comments

What is a Virtual Machine

Virtual_Machine
A virtual machine is a software construct that acts as a container for installing and running conventional operating systems on a server hardware managed by a hypervisor. It is an isolation boundary between the operating systems running on the shared hardware. An operating system running on a virtual machine is completely unaware of the fact that i...
Continue reading
71 Hits
0 Comments

OpenStack Networking

OpenStack
Cloud-based solutions are being adopted at an increasing rate by businesses for their IT driven needs. This move to cloud started with the server virtualization where a hardware server ran as a virtual machine on a hypervisor. The server hardware connects to the Network switches using Ethernet and IP to establish Network connectivity. However, as s...
Continue reading
154 Hits
0 Comments

What is Linux vi?

code
The default editor that comes with the Linux operating system is called vi ( vi sual editor). [Alternate editors for Linux environments include pico and emacs, a product of GNU.] The Linux vi editor is a full screen editor and has two modes of operation: Command mode commands which cause action to be taken on the file, and Insert mode in which ente...
Continue reading
78 Hits
0 Comments

What Is a Linux Shell?

linux
Linux is an Open Source operating system, free in most cases. ​  The shell is a user program or it is an environment provided for user interaction. It is a command language interpreter that executes commands read from the standard input device such as keyboard or from a file. The shell gets started when you log in or open a console (...
Continue reading
95 Hits
0 Comments

Network Subnetting

billionphotos-2796585
Subnetting allows a large network block to be logically segmented into multiple smaller networks, or subnets. The use of many smaller networks allows the use of varying physical networks, such as Ethernet or Fiber Optic, which could not otherwise be combined. Additionally, the smaller subnets can improve the speed of traffic and permit easier manag...
Continue reading
139 Hits
0 Comments