Refer to the exhibit.

In this design, which technology would provide for the best use of resources to provide end-to-end Layer 2
connectivity?
12

A. MSTP
B. PAgP
C. Multichassis EtherChannel
D. LACP

What are two design advantages to using virtual port channel? (Choose two.)
A. enhanced system availability through multiple systems
B. reduced Spanning Tree Protocol convergence time
C. loop management without use of Spanning Tree Protocol
D. ability to use Spanning Tree Protocol blocked ports to forward traffic
E. enhanced ability to recover from Spanning Tree Protocol changes

A customer is using a service provider to provide a WAN backbone for a 30-site network. In establishing the
network, the customer must work within these constraints:
– The customer has a self-managed MPLS backbone.
– The VPLS WAN backbone of the service provider does not support PIM snooping.
– Multicast VPN must be used for multicast support inside some VRFs.
What can the customer do so that multicast traffic is NOT flooded to all sites?
A. Configure static GRE tunnels and run the MPLS and multicast VPN inside these GRE tunnels.
B. Use Label Switched Multicast for the multicast transport.
C. Use PIM-SSM as the multicast routing protocol with IETF Rosen Draft multicast VPN.
D. Configure a static mapping between multicast addresses and MAC addresses.
E. Use GET VPN to encrypt the multicast packets inside the WAN.

A new video multicast application is deployed in the network. The application team wants to use the 239.0.0.1
multicast group to stream the video to users. They want to know if this choice will impact the existing multicast
design. What impact will their choice have on the existing multicast design?
A. Because 239.0.0.1 is a private multicast range, a flood of PIM packets that have to be processed by the
CPU and hostswill be sent by the routers in the network.
B. Because 239.0.0.1 is a private multicast range, the rendezvous point has to send out constant group
updates that will have to be processed by the CPU and hosts.
C. The multicast application sends too many packets into the network and the network infrastructure drops
packets.
D. The 239.0.0.1 group address maps to a system MAC address, and all multicast traffic will have to be sent
to the CPU and flooded out all ports.

Refer to the exhibit.
9

Acme Corporation hired you as a network designer to upgrade their network so that it supports IPv4 and IPv6
multicast. Which two protocols are needed on the LAN switch? (Choose two.)
A. PIM sparse mode
B. IGMP snooping
C. PIM snooping
D. Source Specific Multicast
E. MLD snooping

You are designing a network that will run EIGRP over a Metro Ethernet service that does not employ alink-loss technology. What will be the impact on convergence if there is a break in the end-to-end Layer 2
connectivity within the service provider network?
A. The routers will immediately lose their adjacencies and converge.
B. The routing protocol will not converge until the hold timers have expired.
C. The switch ports connected to the router will go down and the routers will immediately converge.
D. The VLAN on the switches will go inactive, the ports associated on the switch will go down, and the routers
will immediately converge.

You work as a network designer for a company that is replacing their Frame Relay WAN with an MPLS VPN
service, where the PE-to-CE routing protocol is BGP. The company has 3000 routes in their distribution
routers, and they would like to advertise their access routers through the MPLS network. Their service
provider, however, only supports 1000 prefixes per VRF. Which two design solutions can be applied toensure
that your access routers will be able to reach all devices in your network? (Choose two.)
A. Use prefix lists on your distribution routers to control which routes are sent to the MPLS network.
B. On your distribution routers, configure null routes and aggregate routes for the prefixes in your network.
C. Configure your distribution routers to send a default route to the MPLS network.
D. Summarize the routes on the MPLS WAN interfaces of your distribution routers.

Voice traffic between two campus enterprise networks is growing. The network designers decide to adda
second 10-Mb Metro Ethernet service parallel to their original 10-Mb service in order to provide more
bandwidth and diversity. The QoS profile will be the same on the new 10-Mb service due to the voice stability
on the first Metro Ethernet link. When the second link is added to the OSPF domain, which traffic design
consideration would have the most impact on the voice traffic when both links are active?
A. per-destination IP address basis
B. per-flow basis
C. per-packet basis
D. per-source IP address basis

You have created a network design that has two point-to-point Metro Ethernet circuits extending a single
production VLAN between two data centers. Under normal circumstances, one circuit will carry trafficand
spanning tree will block the other. If the company wants you to make use of both circuits to carry production
traffic, which two technologies and features will you investigate to integrate into your network design? (Choose
two.)
A. EtherChannel
B. MST
C. Multichassis EtherChannel
D. PVST+

Refer to the exhibit.

Your company designed a network to allow server VLANs in a data center to span all access switches. In the
design, Layer 3 VLAN interfaces and HSRP are configured on the aggregation switches. In which three ways
should the design of the STP domain be optimized for server and application performance? (Choose three.)
A. Use loop guard on access ports.
B. Use PortFast on access ports.
C. Use root guard on access ports.
D. Align Layer 2 and Layer 3 forwarding paths.
7

E. Use BPDU Skew Detection on access ports.
F. Explicitly determine root and backup root bridges.