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Q1. AS100 and AS200 each have two peering points in different parts of their network. AS100 would like to use one of the links and keep the other link as backup. What should be changed for the design inside AS100 for prefixes received from AS200?
A. MED
B. weight
C. AS-PATH
D. local preference
Answer: D
Q2. Refer to the exhibit.
You are designing an IPv4 unicast Layer 3 VPN load-balancing solution. Which L3VPN feature needs to be configured on the PE routers to support the design requirement?
A. nonmatching route distinguishers
B. matching route target values
C. disable split horizon on PE2 and PE3
D. matching route distinguishers
Answer: A
Q3. 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
Answer: B
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. Acme Corporation wants to minimize the risk of users plugging unauthorized switches and hubs into the network. Which two features can be used on the LAN access ports to support this design requirement? (Choose two.)
A. BPDU Guard
B. PortFast
C. Loop Guard
D. Port Security
E. UDLD
Answer: AD
Q6. A company is planning to connect its 30 sites with a VPLS WAN backbone. A router at each site should establish neighborships with all other routers using the OSPF routing protocol. Which three points must be considered regarding DR and BDR when different router platforms are used? (Choose three.)
A. It is a best practice that the routers with the most powerful hardware should take the role of the DR and BDR.
B. If the IP OSPF priority is the same for all routers, the highest loopback IP address and router ID will decide which routers will take the DR and BDR role during the selection process.
C. To select the DR and BDR, the IP OSPF priority must be set to a higher value than the default value at the DR and BDR during the selection process.
D. To select the DR and BDR, the IP OSPF priority must be set to a lower value than the default value at the DR and BDR during the selection process.
E. The role for the DR and BDR will be selected when a new OSPF router comes up.
F. To force two routers to become a DR and a BDR, the IP OSPF priority can be set to zero at all other OSPF routers.
Answer: ABF
Q7. A metro service provider is planning Resilient Ethernet Protocol for his backbone. Which two aspects must be considered before the network design is finalized? (Choose two.)
A. Two Resilient Ethernet Protocol segments can be connected redundantly at two points. One connection will be blocked, using the Spanning Tree Protocol defined in IEEE 802.1D.
B. UniDirectional Link Detection Protocol can be enabled on Resilient Ethernet Protocol interfaces to detect unidirectional failures.
C. The guaranteed convergence recovery time is less than 50 ms for the local segment.
D. A Resilient Ethernet Protocol segment is limited to a maximum of seven devices.
E. VLAN load balancing for optimal bandwidth usage is supported in any Resilient Ethernet Protocol segment.
Answer: BE
Q8. 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
Answer: AC
Q9. A senior network designer suggests that you should improve network convergence times by reducing BGP timers between your CE router and the PE router of the service provider. Which three factors should you to consider when you adjust the timer values? (Choose three.)
A. access bandwidth
B. service provider agreement to support tuned timers
C. number of routes on the CE router
D. number of VRFs on the PE router
E. service provider scheduling of changes to the PE
Answer: ABC
Q10. Which two factors can significantly affect the OSPF network convergence time? (Choose two.)
A. the tuning of OSPF LSA timers
B. the number of OSPF routes
C. the diameter of the OSPF network
D. different processor capabilities of devices
Answer: AD
Q11. You are designing a solution to eliminate the risk of high CPU utilization on a core network composed of CRS-1 devices. Which option would eliminate the risk of high CPU utilization across the network?
A. Use Local Packet Transport Services (LPTS) to manage hardware SNMP flow rate.
B. Use the in-band control plane policy feature to reduce the SNMP flow rate.
C. Use the control plane policy feature and reduce SNMP flow rate.
D. Use control-plane management-plane in-band and reduce the SNMP flow rate.
E. Use the control-plane management-plane out-of-band feature to reduce the SNMP flow rate.
Answer: A
Q12. Refer to the exhibit.
This Layer 2 ring has 10 VLANs with 1000 MAC addresses in each VLAN. Which protocol or mechanism provides the shortest traffic outage if the link marked with "X" fails?
A. PVRST
B. REP
C. MST
D. G.8031
E. BFD
Answer: B
Q13. Which design concern should be accounted for in all Layer 3 virtualization technologies?
A. Layer 3 redundancy
B. packet sizing
C. application usage
D. Layer 3 stability
Answer: B
Q14. What is a key benefit of a layered network design?
A. cost savings
B. increased security
C. increased flexibility
D. decreased broadcast
Answer: C
Q15. Refer to the exhibit.
Four customer sites are connected through an EoMPLS-based VPLS over an MPLS provider. You are migrating from OSPF to multi-level IS-IS as the routing protocol to run on the four CE routers, and connectivity between all four sites is required. You want to control which CE or CEs will be elected as the Designated Intermediate System. Which two key aspects should be taken into account? (Choose two.)
A. The DIS role for Level1 and Level2 can be performed by different routers.
B. The CE with the second highest priority will be elected as the backup DIS on the LAN segment.
C. One of the CE routers will be elected as the DIS based on interface priority then highest MAC address.
D. It is recommended to use point-to-point link type on the CEs.
E. If a new CE router is added to the VPLS cloud with a lower interface priority it will become the DIS.
Answer: AC