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Questions # 1:

Which of the following statements about the EVPN route types used to support multi-homing is TRUE?

Options:
A.

Ethernet segment (ES) routes indicate the redundancy mode of the Ethernet segment.

B.

ES routes provide the ESI label required to support the split-horizon mechanism.

C.

Auto-discovery (A-D) routes are imported by all PES participating in the EVPN service.

D.

A-D per Ethernet segment routes indicate the desired designated forwarder election algorithm.

Expert Solution
Questions # 2:

Proxy-ARP/ND is operational for a VPLS. Which of the following statements is FALSE?

Options:
A.

The PE has proxy-ARP and dynamic-populate enabled for the VPLS.

B.

The proxy-ARP table is populated by snooping IP packets received from remote PEs.

C.

When the PE learns a local host IP address, it adds an entry into its proxy-ARP table.

D.

The PE advertises a MAC/IP route that includes the MAC and IP address of a local host.

Expert Solution
Questions # 3:

In the exhibit, an EVI range is configured and the preference-based algorithm is used to elect the designated forwarder (DF) on ESI 1. Which PE is elected as DF for VPLS 10?

Question # 3

Options:
A.

PEI

B.

PE2

C.

PE3

D.

PE4

Expert Solution
Questions # 4:

The interface-ful numbered model is used for a Layer-3 EVPN service. Which of the following statements is FALSE?

Options:
A.

EVPN routes are advertised with a service label associated with the SBD VPLS.

B.

IP-Prefix routes exchanged between PES include a non-zero gateway IP address as an overlay index.

C.

EVPN MAC/IP routes are used to advertise the MAC and IP addresses of local hosts.

D.

EVPN MAC/IP routes are used to advertise the MAC and IP addresses of SBD IRB interfaces.

Expert Solution
Questions # 5:

Which of the following best describes the operation of a non-designated forwarder (non-DF) in a single-active Ethernet segment?

    Blocks Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM

    Allows Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM

    Blocks Tx unicast, blocks Rx unicast, blocks Tx BUM, blocks Rx BUM

Options:
A.

Allows Tx unicast, blocks Rx unicast, allows Tx BUM, blocks Rx BUM

Expert Solution
Questions # 6:

Which of the following statements about PE-to-PE MAC address advertisement is FALSE?

Options:
A.

The service distinguisher (label or VNI) is advertised with the MAC/IP EVPN update.

B.

Route targets are used to uniquely identify routes between EVIS in the case of MAC address overlaps.

C.

A PE uses a single MP-BGP session with a remote peer to exchange the routes for all EVIs.

D.

A PE advertises locally-learned MAC addresses to remote PES using EVPN type-2 routes.

Expert Solution
Questions # 7:

Which of the following statements about EVPN Layer-3 services that utilize the interface-ful model is TRUE?

Options:
A.

EVPN MAC/IP routes are used to advertise the IP prefixes of subnets attached to a VPRN.

B.

VPRN instances are interconnected using a supplementary broadcast domain (SBD) VPLS.

C.

Intra-subnet traffic is carried over the tunnels provided by the SBD VPLS.

D.

The MAC/IP routing information is used to populate the VPRN routing table at the remote PEs.

Expert Solution
Questions # 8:

Which of the following statements does NOT describe the operation of the Layer-3 EVPN asymmetric forwarding model?

Options:
A.

All VPLS instances must be configured on all PES regardless of whether they have a local host or not.

B.

EVPN IP-Prefix routes are used to populate the VPRN VRF tables.

C.

The egress PE does not perform any Layer-3 route look up to forward traffic.

D.

The ingress PE performs both Layer-2 and Layer-3 look ups when forwarding traffic between subnets.

Expert Solution
Questions # 9:

Examine the exhibit.

Question # 9

Which of the following statements about the operation of VPLS 20 is TRUE?

Options:
A.

The flooding list maintained by PEI for VPLS 20 contains three entries: PE2, PE3, and PE4.

B.

PE3 advertises an IMET route to PEI when its VPLS 20's mesh-SDP becomes operationally UP.

C.

PE3 signals a service label to PE4 when its VPLS 20 is enabled and is bound to an operational SDP.

D.

PEI advertises a MAC route for MAC-OI when its VPLS 2(Ys SAP becomes operationally UP.

Expert Solution
Questions # 10:

Which of the following EVPN routes are exchanged to support the operation of a multi-homed EVPN VPWS?

Options:
A.

Auto-discovery per EVPN instance (A-D per EVI) routes and Auto-discovery per Ethernet segment (A-D per ES) routes only

B.

MAC/IP routes, A-D per EVI routes, and A-D per ES routes

C.

A-D per EVI routes, A-D per ES routes, and Ethernet segment (ES) routes

D.

A-D per EVI routes and ES routes only

Expert Solution
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