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Q1. You are using iSCSI to transfer files between a 10 Gigabit Ethernet storage system and a 1 Gigabit Ethernet server. The performance is only approximately 700 Mb/s and output drops are occurring on the server switch port. Which action will improve performance in a cost-effective manner?
A. Use a WRED random drop policy.
B. Increase the queue to at least 1 GB.
C. Enable the TCP Nagle algorithm on the receiver.
D. Change the protocol to CIFS.
Answer: A
Q2. 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
Q3. An IBGP mesh design is being scoped, and in the discussions, one of the design engineers proposes the use of route reflectors. Which limitation is valid when using route reflectors in this design?
A. The configuration complexity on the routers will be increased.
B. Route reflectors will limit the total number of routes in the topology.
C. Multipath information is difficult to propagate in a route reflector topology.
D. Route reflectors will cause an opportunity to create routing loops.
Answer: C
Q4. 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
Answer: B
Q5. 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
Answer: CF
Q6. In which two ways is a network design improved by the inclusion of IP Event Dampening? (Choose two.)
A. reduces processing load
B. provides sub-second convergence
C. improves network stability
D. prevents routing loops
E. quickly detects network failures
Answer: AC
Q7. You are designing an IPv4 any source multicast redundancy solution. Which technology ensures the quickest RP convergence?
A. Auto-RP
B. Embedded RP
C. bootstrap router
D. MSDP anycast RP
Answer: D
Q8. Refer to the exhibit.
This new OSPF network has four areas, but the hub-and-spoke area experiences frequent flapping. You must fix this design failure. Which two mechanisms can you use to isolate the data center area from the hub-and-spoke area without losing IP connectivity? (Choose two.)
A. Make the DC area totally stub.
B. Make the DC area an NSSA.
C. Convert the DC area to EIGRP protocol.
D. Deploy a prefix summarization on router D.
E. Use OSPF distribute-list filtering on router A.
Answer: AD
Q9. You are asked to design a large campus network that will be using multicast for data transport. Which feature should be enabled at the Layer 2 access edge for host-only ports?
A. PortFast
B. BPDU guard
C. PIM-SM
D. PIM query interval
Answer: A
Q10. 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
Q11. On a VoIP solution design, which option shows one-way latency, packet loss, and jitter measurements that ensure acceptable voice quality?
A. Latency: 110 ms Packet loss: 1% Jitter: 40 ms
B. Latency: 130 ms Packet loss: 0.5% Jitter: 30 ms
C. Latency: 150 ms Packet loss: 1.25% Jitter: 20 ms
D. Latency: 170 ms Packet loss: 0.75% Jitter: 10 ms
Answer: B
Q12. A network designer is working with a company to improve convergence at the Layer 2 control plane and decides to use LACP. Which of these components does LACP use to create the system ID?
A. LACP system priority and switch MAC address
B. LACP port priority and switch MAC address
C. LACP port priority and port number
D. LACP system priority and port number
Answer: A
Q13. A company wants to connect two data center sites using a hub-and-spoke design with 2000 remote sites. One design consideration is the requirement to transfer MPLS packets over the public Internet. In addition, one router at each site should be used, and the MPLS packets must be encapsulated inside IP packets because the public Internet cannot transfer native MPLS packets. Which feature can be used to simplify the network design?
A. GET VPN can be used to encrypt the MPLS packets with IPsec.
B. DMVPN can be used to build up GRE tunnels dynamically with MPLS encapsulation inside.
C. L2TPv3 can be used to encapsulate the MPLS packets.
D. Site-to-site IPsec without GRE can be used to encapsulate the MPLS packets.
E. PPPoE can be used to encapsulate the MPLS packets.
Answer: B
Q14. 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
Answer: A
Q15. In a large enterprise network with multiple data centers and thousands of access devices, OSPF is becoming unstable due to link flapping. The current design has the access devices multihomed to large aggregation routers at each of the data centers. How would you redesign the network to improve stability?
A. Add a layer of regional Layer 3 aggregation devices, but leave the ABR function on the data center aggregation routers.
B. Add a layer of regional Layer 2 aggregation devices, but leave the ABR function on the data center aggregation routers.
C. Add a layer of regional Layer 3 aggregation devices and move the ABR function to the regional aggregation device.
D. Add a layer of regional Layer 2 aggregation devices and move the ABR function to the regional aggregation device.
Answer: C