Q1. Which three techniques can be used to improve fault isolation in an enterprise network design? (Choose three.)
A. aggregate routing information on an OSPF ABR
B. fully meshed distribution layer
C. Equal-Cost Multipath routing
D. EIGRP query boundaries
E. multiple IS-IS flooding domains
F. tuned Spanning Tree Protocol timers
Answer: ADE
Q2. When a design calls for spanning VLANs across a campus network, what are two issues that need to be addressed in the design? (Choose two.)
A. network convergence
B. network accessibility
C. fault isolation
D. application scalability
E. user experience
Answer: AC
Q3. Which mechanism provides a Layer 2 fault isolation between data centers?
A. TRILL
B. LISP
C. advanced VPLS
D. OTV
E. fabric path
Answer: D
Q4. You have been asked to design a wireless network solution that will implement context-aware services on an existing network that was initially deployed for data traffic only. Which two design principles would you follow to increase the location accuracy with the least possible impact on the current setup? (Choose two.)
A. Use directional antennas to provide better cell separation.
B. Add access points along the perimeter of the coverage area.
C. Install additional APs in monitor mode where the cochannel interference would otherwise be affected.
D. Increase the AP density to create an average interaccess point distance of less than 40 ft.
E. Fine tune the access points radio configuration to have a higher average transmission power to achieve better coverage.
Answer: BC
Q5. 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?
A. MSTP
B. PAgP
C. Multichassis EtherChannel
D. LACP
Answer: C
Q6. 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
Q7. 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
Q8. 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 traffic and 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+
Answer: AC
Q9. 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
Q10. 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