If a network design must support rapid convergence on half-duplex interfaces, which IEEE 802.1w capability
should be used?
A. root guard
B. proposal-agreement handshake
C. loop guard
D. UplinkFast

When creating a design plan for IPv6 integration, you decide to use stateless encapsulation of IPv6 packets
into IPv4 tunnels between subscriber CPEs and a border relay. Which deployment technique allows for this
functionality?
A. 6rd
B. Dual-Stack Lite
C. 4rd
D. DSTM

Which mechanism should be added to a network design to identify unidirectional Spanning Tree Protocol
failures through BPDU loss?
A. UDLD
B. loop guard
C. BPDU guard?
D. root guard

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You are the lead IP/MPLS network designer of a service provider called XYZ. You are leading a design
discussion regarding IPv6 implementation in the XYZ MPLS network, using MPLS 6PE/6VPE techniques.
Currently, XYZ provides IPv4 multicast services over an MPLS network by using MVPN, and would like to
provide parallel IPv6 multicast services. Which three multicast solutions should be enabled? (Choosethree.)
A. native IPv6, only for multicast services
B. MPLS 6PE/6VPE, because it provides IPv6 multicast support by default
C. an overlay model using Layer 2 MPLS tunnels
D. PIM-DM to enable IPv6 multicast in conjunction with MPLS 6PE/6VPE
E. MVPN for IPv6 multicast service

Network designers plan to interconnect two geographically separated data centers using an Ethernet-over-MPLS pseudowire. Within that design, the link between the sites is stable, there are no apparent loops in the
topology, and the root bridges for the respective VLANs are stable and unchanging. What additional aspect of
the design should be adjusted to mitigate the chance of connectivity issues to the peer data center when the
connection takes place?
A. Enable 802.1d on one data center, and 802.1w on the other.
B. Ensure that the spanning tree diameter for one or more VLANs is not too large.
C. Enable UDLD on the link between the data centers.
D. Enable root guard on the link between the data centers.

ACME Corporation is integrating IPv6 into their network, which relies heavily on multicast distribution of data.
Which two IPv6 integration technologies support IPv6 multicast? (Choose two.)
A. 6VPE
B. 6PE
C. dual stack
D. ISATAP
E. 6to4
F. IPv6INIP

A network designer wants to improve a company network design due to multiple network crashes. Which
technology would allow for the restore of a network connection without informing the Layer 3 protocol?
A. Bidirectional Forwarding Detection
B. automatic protection switching
C. UniDirectional Link Detection
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D. Ethernet OAM

What is a design aspect regarding multicast transport for MPLS Layer 3 VPNs using the Rosen Draft
implementation?
A. LDP is the multicast control plane protocol.
B. Multicast traffic is forwarded over GRE tunnels.
C. Multicast traffic is forwarded over LDP or RSVP signaled LSPs.
D. Using the MDT SAFI in BGP ensures that PIM can be disabled in the core.

A company plans to use BFD between its routers to detect a connectivity problem inside the switched network.
An IPS is transparently installed between the switches. Which packets should the IPS forward for BFDto work
under all circumstances?
A. IP packets with broadcast IP source addresses
B. IP packets with identical source and destination IP addresses
C. fragmented packets with the do-not-fragment bit set
D. IP packets with the multicast IP source address
E. IP packets with the multicast IP destination address
F. IP packets with the destination IP address 0.0.0.0

A company wants to use SSM as the multicast routing protocol inside its network. Some of its multicast
applications do not support IGMPv3. In which two ways can the mapping be done when these applications
send IGMPv2 join messages? (Choose two.)
A. The Layer 2 switches can send a request to a DNS server.
B. The Layer 3 multicast routers can send a request to a DNS server.
C. The mapping can be done statically at the Layer 2 switches.
D. The mapping can be done statically at the Layer 3 multicast routers.
E. The Layer 2 switches can transform the IGMPv2 join to an IGMPv3lite join.
F. The Layer 3 multicast routers can transform the IGMPv2 join to an IGMPv3lite join.