which of the following technologies can you use to tunnel any layer 3 protocol through an IP transport network? a. GRE b. PPPoA c. IPSec d. PPPoE. which of the following protocols can be used in combination with IPSec to provide more flexibility by allowing multicast traffic to be forwarded in the tunnel? a. TLS b. site to site c. GRE d. remote-access VPN. which of the following internet access technolgies takes advantage of already-installed phone lines? a. cable internet b. DSL c. fiber d. MPLS. which of the following MPLS VPN types allows CE routers to directly form OSPF peerings with each other? a. layer 2 MPLS VPN b. layer 2.5 MPLS VPN c. layer 3 MPLS VPN . Baraka's Custom House of officialdom uses an MPLS VPN to connect its various offices together. which of the following routers does NOT run MPLS? a. PE b. P c. CE. which of the following leased standards provides 1.544 Mbps of bandwidth? a. E1 b. T1 c. E2 d. T2.
