WAN questions for ICDN 2

gnguyen2gnguyen2 Member Posts: 10 ■□□□□□□□□□
Hey guys, I'm currently studying for my CCNA and I don't fully comprehending the WAN section. I'm currently using CCNA Routing and Switching 200-125 Official Cert Guide by Wendell Odom. I'll like to provide a brief overview of my understandings and will appreciate any feedback to fill in the gaps I'm missing.

HDLC/PPP are layer 2 protocols and are only used with Leased Lines.
- Are Leased Lines still popular in today? I tried a internet search for service providers but it did not yield any results in my area.

eBPG - Is a layer 3 routing protocol between Customer/ISPs with different ASN.

MetroE and MPLS are Private WAN services provided by a service provider.
- What physical media is used with MPLS (Ethernet?)?

GRE and PPPoe uses tunnels with encryption technology to keep the traffic secure over the Public WAN services.



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