WAN Flashcards
What is a LAN
Local Area Network, connects computers or other devices in relative small area (single building or multi building)
What is WAN
Wide Area Network, geographically distributed network. Connects LANs together
What is MAN
Metropolitan Area Network, Larger than a LAN but smaller than a WAN
Which Site-to-Site IPsec VPN configurations offer multicast
GRE (Generic Routing Encapsulation) over IPsec tunnel
IPsec VTI (Virtual Tunnel Interface) but CISCO proprietary
What are the 3 Primary WAN connectivity options
Leased Line
MPLS (Multi Protocol Label Switching)
Satellite
What is “Dark Fiber”
unused cables
How are leased lines connected?
Direct point-to-point connections using a serial port
What are the common bandwidth options in North America for leased lines
T1 - 1.544 Mbps
T2 - 6 Mbps
T3 - 45 Mbps
T4 - 275 Mbps
What are the common bandwidth options in Europe for leased lines
E1 - 2 Mbps
E2 - 8 Mbps
E3 - 34 Mbps
E4 - 140 Mbps
MPLS provides what kind of topology
Full Mesh
PPoE is usually configured on what?
DSL
What is a advantage and disadvantage of Hub and Spoke topology
Advantage: simple, and centralized security
Disadvantage: Single point of failure
How do you take out the disadvantage in the hub and spoke topology?
Make a redundant hub
