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Q1. You have been hired by a startup company to provide optical services using MPLS-TP. Which three options describe reasons to use the MPLS-TP standard in your design? (Choose three.)
A. MPLS-TP is a newer packet transport technology that replaces SONET/SDH.
B. MPLS-TP includes extensions to native MPLS OAM for fault detection, monitoring, and propagation.
C. MPLS-TP requires a routing protocol.
D. MPLS-TP uses an IANA assigned label 13 for OAM.
E. MPLS-TP uses Ethernet Y.1731 OAM.
Answer: ABD
Q2. You are designing a Group Encrypted Transport Virtual Private Network solution consisting of 30 group members. Which measure helps protect encrypted user traffic from replay attacks?
A. counter-based anti-replay
B. time-based anti-replay
C. nonce payload
D. RSA-encrypted nonce
E. digital certificates
Answer: B
Q3. You are designing a network for a branch office. In order to improve convergence time, you are required to use the BFD feature. Which four routing protocols can you use to facilitate this? (Choose four.)
A. EIGRP
B. IS-IS
C. BGP
D. static
E. RIP
Answer: ABCD
Q4. A company wants to use an external appliance between its data center and WAN to optimize email and HTTP communications. The traffic flow must pass this appliance in both directions. The appliance is connected with only one interface to a Cisco IOS router and has a single IP address. Which two adjustments can you make to the network design so that the appliance is added into the traffic path? (Choose two.)
A. Configure static routes to route the traffic to the appliance.
B. Adjust the dynamic routing to route the traffic to the appliance.
C. Configure NAT to force the traffic to the appliance.
D. Configure a route map at the data center-side interface to forward the traffic to the appliance IP address.
E. Configure a route map at the appliance-facing interface to forward the traffic to the appliance IP address.
F. Configure a route map at the WAN-side interface to forward the traffic to the appliance IP address.
Answer: DF
Q5. How should multiple OSPF areas be designed when deployed on a classic three-layer (core/distribution/access) network hierarchy?
A. The OSPF flooding domain boundary should be at the edge of the core layer.
B. The OSPF flooding domain boundary should be within the distribution layer.
C. OSPF should generally be deployed in a three-layer domain hierarchy to align with the physical three-layer hierarchy.
D. OSPF flooding domain boundaries should be placed with route aggregation in mind.
Answer: D
Q6. A large service provider offers VoIP and Video services to business customers. Which three areas should the service provider monitor related to these services? (Choose three.)
A. bandwidth utilization
B. service response time
C. packet loss
D. jitter
E. latency
F. availability
Answer: CDE
Q7. Refer to the exhibit.
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
Answer: BE
Q8. A Tier-3 Service Provider is evolving into a Tier-2 Service Provider due to the amount of Enterprise business it is receiving. The network engineers are re-evaluating their IP/MPLS design considerations in order to support duplicate/overlapping IP addressing from their Enterprise customers within each Layer 3 VPN. Which of the following would need to be reviewed to ensure stability in their network?
A. Assigning unique Route Target ID's
B. Assigning unique Route Distinguishers
C. Assigning unique IP address space for the Enterprise NAT/Firewalls
D. Assigning unique VRF ID's to each Layer 3 VPN
Answer: B
Q9. Which restriction prevents a designer from using a GDOI-based VPN to secure traffic that traverses the Internet?
A. Enterprise host IP addresses are typically not routable.
B. GDOI is less secure than traditional IPsec.
C. Network address translation functions interfere with tunnel header preservation.
D. The use of public addresses is not supported with GDOI.
Answer: C
Q10. Refer to the exhibit.
A new IPv4 multicast-based video-streaming service is being provisioned. During the design-validation tests, you realize that the link between the two buildings is carrying multicast traffic even when there are no receivers connected to the switch in Building B and despite IGMP snooping being enabled on both Layer 2 switches and IGMPv2 runs on the hosts. Which design change will prevent the multicast traffic from being unnecessarily flooded throughout the campus network?
A. Enable PIM snooping on both Layer 2 switches.
B. Enable multicast storm control on the link between Switch 1 and Switch 2.
C. Use static Layer 2 MAC forwarding entries on Switch 1.
D. Change the IPv4 multicast group address such that it excludes the usage of link-local MAC addresses.
E. Ensure that Switch 1 is an IGMP querier.
Answer: D
Q11. Refer to the exhibit.
You are developing a migration plan to enable IPv6 in your IPv4 network. Starting at R3 and assuming default IS-IS operations, what is likely to happen when you enable IPv6 routing on the link from R3 to R2?
A. Only R3 and R2 have IPv4 and IPv6 reachability.
B. R2 receives an IPv6 default route from R3.
C. Loopback reachability between all routers for IPv4 is lost.
D. All routers except R2 are reachable through IPv4.
E. R3 advertises the link from R3-R2 to R1, R4 and R5 only.
Answer: C
Q12. Refer to the exhibit.
How would you redesign the network to improve availability of the routers 1A and 1B at the core site?
A. Enable Graceful Restart Helper for OSPF
B. Use link bundles over multiple slots
C. Use APS Ethernet circuits and redundant interfaces
D. Create a multichassis system with the two routers
Answer: D
Q13. When you design a network, when would it be required to leak routes into a Level 1 area?
A. when a multicast RP is configured in the nonbackbone area
B. when MPLS L3VPN PE devices are configured in the Level 1 areas
C. when equal cost load balancing is required between the backbone and nonbackbone areas
D. when unequal cost load balancing is required between the backbone and nonbackbone areas
Answer: B
Q14. When adding an IPSec headend termination device to your network design, which two performance indicators are the most accurate to determine device scalability? (Choose two.)
A. CPU capabilities
B. bandwidth capabilities
C. packets per second capabilities
D. maximum tunnel termination capabilities
Answer: CD
Q15. A company supports IPv4 and IPv6 addresses, and they need to be able to support flow-based translations for multiple IPv6 devices to a single IPv4 address. Which address family translation design solution should be recommended?
A. stateful NAT-PT
B. NAT-PT
C. stateless NAT64
D. stateful NAT64
Answer: D