4A0-C01 Practice Questions

A.  

Family ipv4

B.  

Family ipv6

C.  

Family ipv4 ipv6

D.  

Family vpn-ipv4

E.  

Family vpn-ipv4 vpn-ipv6

A.  

The frame egresses from 1/1/1:6 with no VLAN tag.

B.  

The frame egresses from 1/1/1:6 with VLAN tag 5.

C.  

The frame egresses from 1/1/1:6 with VLAN tag 6.

D.  

The frame egresses from 1/1/1:6 with an inner VLAN tag of 5 and an outer VLAN tag of 6.

A.  

VRF information is advertised between PEs using MP-BGP.

B.  

VRF tables are used to forward traffic to CEs.

C.  

P routers use VRF tables to maintain customer-specific information.

D.  

VRF tables provide isolation between customers.

A.  

The labels are of local significance only, so other routers can use the same value.

B.  

10.10.10.1 has yet to send its own unique label.

C.  

Router R4 is using the same tunnel to send and receive to 10.10.10.1.

D.  

The service on 10.10.10.1 is down, so it is rejecting packets.

A.  

The PE routers of the service are responsible for learning MAC addresses.

B.  

Flooding ensures that all PEs in a fully-meshed VPLS will learn the source address of all traffic.

C.  

MAC learning reduces flooding of frames with previously learned addresses.

D.  

Multiple VPLSes on the same PE share the same MAC FD

B.  

A.  

Each VRF table contains routes for a single VPRN.

B.  

Route targets are used to determine if a prefix belongs to a VR

F.  

C.  

Routes in the VRF table are advertised to the core routers.

D.  

VPN labels identify which VRF table should be used for a packet.

A.  

An echo request is sent based on the LSP's label stack.

B.  

Echo reply packets may not take the same path as the LSP.

C.  

The IP destination address is used to initiate echo requests,

D.  

The test fails if the LSP is not operationally up.

A.  

The traceroute will only show one hop: R5-R6.

B.  

The traceroute will only show 2 hops; R5-R1 and R4-R6.

C.  

The traceroute will only show 3 hops: R5-R1, R1-R4 and R4-R6.

D.  

The traceroute will show one hop for each router in the provider core and one for each CE-PE hop.

A.  

TRUE

B.  

FALSE

A.  

It drops the frame.

B.  

It floods the frame to all PEs participating in the service.

C.  

It sends a destination unreachable message back to the originating host.

D.  

It sends the frame to the closest neighbor.