WAN For Enterprise Flashcards Preview

CCNP ENSLD 300-420 - Concepts & Theory > WAN For Enterprise > Flashcards

Flashcards in WAN For Enterprise Deck (15)
Loading flashcards...
1
Q

What is Dynamic Multipoint VPN (DMVPN)?

A

hub and spoke topology with multiple sites that use DMVPN to configure multiple sites dynamically

2
Q

What is GetVPN and two things does it used to transport data securely over a private WAN?

A

Tunnel-less VPN uses group member routers that communicate to a key server over a private WAN

3
Q

What is a MPLS VPN?

A

uses labels in the service provider network to interconnect to set of sites for the transport and routing of network traffic

4
Q

What is a Virtual Private LAN Service (VPLS)?

A

connect multiple local area networks (LANs) over the Internet into a single bridged domain using a IP/MPLS network

5
Q

What are the two protocols used for Virtual Private LAN Service (VPLS)?

A

IP/MPLS

6
Q

What type of router would you use to connect customers or subscribers to a VPLS network?

A

vEdge router

7
Q

What would be the purpose of using a demilitarized zone (DMZ) in a network?

A

divide and secure a network into two parts from inside the same LAN

8
Q

What is the difference in virtualization between a Layer 2 vs a Layer 3 VPN?

A

Layer 2 VPN virtualizes the data link layer for remote sites so they operate on the same LAN

Layer 3 VPN virtualizes the network layer in order to route customer networks over a public infrastructure

9
Q

What is the difference in connectivity between a Layer 2 vs Layer 3 VPN?

A

Layer 2 VPN makes Layer 3 IP connectivity with remote customer sites not the service provider

Layer 3 VPN makes Layer 3 IP connectivity with provider sites edge devices

10
Q

Are service providers involved in the routing of customer subnets using a Layer 2 VPN? True/False

A

False

11
Q

Are service providers involved in the routing of customer subnets using a Layer 3 VPN? True/False

A

True

12
Q

What are two types of L2 VPNs?

A

VPLS & Tunneling

13
Q

What are three types of L3 VPNs?

A

MPLS VPN, P2P IPSec

14
Q

What is dark fiber and the benefit of using it?

A

unused optical fiber separate from a main network that’s controller by the client rather than a network provider

15
Q

What is Dense Wavelength Division Multiplexing (DWDM)?

A

Fiber-optic transmission technique for processing multiple digital signals for many different wavelengths into a single optical fiber