You are the lead network designer hired by Service Provider XYZ to deploy CoS functionality on the core
MPLS network (P routers). The goal of the network design is to provide a complete CoS solution to all
customers that purchase services such as dedicated internet access, MPLS L3VPN, and L2VPN (pseudowire).
Service Provider XYZ has these design requirements:
– The network supports four service queues with equal treatment for delay, jitter, and packet loss.
– Queues are numbered 0-3, where 0 is the default queue.
– Three queues have one treatment.
– One queue has either one or two treatments.
How would you design your solution to map the DSCP value properly so that the traffic is assigned
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to the respective queues in the Service Provider XYZ MPLS core network?
A. Classify traffic according to DSCP value into appropriate P router queues.
B. Map the appropriate DSCP value into the EXP field based on the number of queues in the MPLS P
routers.
C. Map the appropriate DSCP value into the EXP field based on the number of queues in the MPLS PE
routers.
D. Based on the DSCP value, traffic is mapped automatically into appropriate queues in the MPLS CE
routers.

In which two ways is IPv4 and IPv6 traffic handled in a network design that uses QoS deployment options?
(Choose two.)
A. IPv6 and IPv4 traffic is treated in the same way by using a single QoS policy that classifies and matches
on both protocols.
B. IPv6 traffic is treated differently than IPv4 by using the flow-label field, which is built into theIPv6 packet
header.
C. IPv6 traffic does not require QoS because it uses to the flow-label field, which classifies and matches on
the IPv6 protocol.
D. IPv6 traffic is treated differently than IPv4 by using two different QoS policies.
E. IPv6 traffic is treated differently than IPv4 because it uses only the DSCP value and not the IP
precedence.

You have been hired to redesign a network due to issues with congestion. How will a router function if the QoS
mechanism of congestion avoidance is integrated into the existing network design?
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A. the router handles the overflow of traffic by using FIFO
B. the router handles the possible buildup of congestion by using WRED
C. the router forces inbound and outbound traffic to stay within a defined profile by using rate limiting
D. the router separates packets based on certain characteristics by using NBAR
E. the router marks packets based on certain characteristics by using PBR

Service provider XYZ plans to provide dedicated Internet access and MPLS L3VPN services to business
customers. XYZ has these design specifications:
– MP-BGP running on the core MPLS P routers with external Internet routes.
– The core network will include 16 Point of Presence IP POPs throughout the Asia-Pacific region.
– An additional nine non-P routers will use EBGP peering with multiple providers for Internet traffic.
– An additional 50 PE routers will provide end customers with dedicated Internet access and L3VPN services
throughout the Asia-Pacific region.
In what two ways can the MP-BGP be removed from the MPLS P core routers and still provide dedicated
Internet access and MPLS L3VPN services? (Choose two.)
A. Disable BGP from the MPLS core P routers and have the MPLS core P routers run OSPF and LDP.
B. Enable separate BGP control plane routers using a route reflector server concept that will be fully meshed
with peer route reflector servers and have clients as MPLS PE routers and EBGP peering routers.
C. Enable all EBGP routers as route reflector servers and MPLS PE routers as their clients.
D. It is not possible to disable BGP from the MPLS core P routers without impacting the dedicated Internet
access and MPLS L3VPN services.

Refer to the exhibit.

An enterprise is migrating its single-area OSPF network from a Frame Relay WAN service to an MPLS
L3VPN service. Frame Relay will remain in only a few sites that require increased resiliency via twodifferent
WAN connections.
Which feature could be used in the ?MPLS VPN service provider network to support the design requirement
by ensuring that during normal operation, intersite traffic will only use the MPLS VPN service and not the old
Frame Relay service?
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A. virtual links
B. sham links
C. multiple stub areas
D. super backbone

When creating a network design that routes an IGP over L2VPNs, with which device does the remote CE
router form an IGP adjacency?
A. the hub site PE router
B. the hub site CE router
C. the directly connected PE router
D. The IGP will not establish adjacency over the MPLS network.

You are working on a network design plan for a company with approximately 2000 sites. The sites willbe
connected using the public Internet. You plan to use private IP addressing in the network design, which will be
routed without NAT through an encrypted WAN network. Some sites will be connected to the Internet with
dynamic public IP addresses, and these addresses may change occasionally. Which VPN solution will support
these design requirements?
A. GET VPN must be used, because DMVPN does not scale to 2000 sites.
B. DMVPN must be used, because GET VPN does not scale to 2000 sites.
C. GET VPN must be used, because private IP addresses cannot be transferred with DMVPN through the
public Internet.
D. DMVPN must be used, because private IP addresses cannot be transferred with GET VPN through the
public Internet.
E. GET VPN must be used, because DMVPN does not support dynamic IP addresses for some sites.
F. DMVPN must be used, because GET VPN does not support dynamic IP addresses for some sites.

Company X will be integrating an IPv6 application into their network and wants to develop a test environment
to evaluate application performance across the network. This application will require both unicast and
multicast communications. The company can do this implementation only in certain areas of its existing IPv4-only network, but wants all areas to communicate with each other. When developing the design to provide
connectivity between these testing locations, what tunneling technology would work in this scenario?
A. ISATAP
B. 6to4
C. DMVPN
D. 6vPE
E. 6PE

A network designer has provisioned a router to use IPsec to encrypt the traffic over a GRE tunnel going to a
web server at a remote location. From the router, the network designer can ping the web server, although the
users in the office comment that they are unable to reach it. (Note: The DF bit is not set.) Which aspect should
be changed in the design of the virtual connection?
A. IP addresses of the GRE tunnel endpoints
B. IPsec configuration
C. MTU size on the GRE tunnel
D. encapsulation of the GRE tunnel

You are designing a network using multipoint GRE tunnels and need to be able to detect when connectivity
between the GRE tunnel endpoints is broken. Which statement is true about configuring keepalives for
multipoint GRE tunnels?
A. The keepalive timer values on the routers must have the same value.
B. Both routers must support GRE tunnel keepalives.
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C. No configuration is required to detect when connectivity is broken between the GRE tunnel endpoints.
D. GRE tunnel keepalives will not detect when connectivity is broken between the GRE tunnel endpoints.