VLAN - Virtual Local Area Network - Used to segregate network traffic / data such that devices on different VLANs appear as though they are on totally different physical connections. This enables a single piece of equipment (network switch) to be used to support different networks. Applications such as business centres, multi-tenanted buildings, differing security regimes, separation of applications (i.e. VOIP & LAN data) are all examples of where VLANs can be used.

 

Layer 2 - Layer 2 of the ISO 7 layer model is commonly used to describe 'flat' broadcast networks, where all packets are bridged / switched around the network. This layer includes STP (Spanning Tree Protocol), VLANs and physical connectivity. Most small networks comprising a few switches don't need to worry too much about this area and are essentially 'plug and play', whilst in larger networks Layer 2 connectivity defines the physical data paths used and needs to be considered when designing resilience, quality of service and the virtualisation of networks.

 

Spanning Tree Protocol -

 

802.1x - An authentication protocol that can be used in both wired and wireless networks to control user access to networks, typically via the back-end integration to a Radius server. This protocol is available on most managed network switches and access points and can be further integrated in to Microsoft Active Directory and ensures that no user has physical connectivity to the network without authenticating using their Windows domain login.

 

Network Switch

 

Radius -

 

HSRP -

 

VRRP -

 

Exclaimer -

 

SQL -

 

DFS -

 

DAS -

 

NAS -

 

TCP/IP -

 

Layer 3 -

 

Layer 4 -

 

ISO 7 layer model -

 

DNS -

 

DHCP -

 

Active Directory (AD) -

 

Microsoft Exchange -

 

Microsoft Sharepoint -

 

Microsoft Server -

 

Microsoft Small Business Server -

 

VMware -

 

Client Server -

 

Windows Domain

 

Peer-2-peer -

 

Wireless LAN -

 

Access Point

 

Wireless LAN Controller

 

Wireless LAN Standards

802.11a

802.11b

802.11g

802.11n

 

ISDN2 -

 

ISDN30 -

 

POTS -

 

Analgoue Phone -

 

Digital Phone -

 

Voice over IP (VOIP) -

 

Premicell - 

ACD -

 

Hunt Group -

 

GPRS -

 

3G -

 

Distaster Recovery

 

Business Continuity

 

SCSi

 

iSCSI 

 

SATA

 

RAID1

 

RAID5

 

RAID10

 

Hosting

 

ISP

 

ADSL

 

SDSL

 

Leased Line

 

NTU

 

DSLAM

 

Local Exchange

 

LAN

 

WAN

 

WAFS