Refer to the exhibit. The operations team has identified that some of the multi-tiered e-commerce applications have slow performance, due to illegitimate inbound traffic from the Internet. On which network device do you place traffic filtering to improve performance?

• A.B
• B.D
• C.A
• D.C

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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.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.
• C.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.
• D.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.
• E.The role for the DR and BDR will be selected when a new OSPF router comes up.
• F.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.

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A large enterprise network has two data centers and a WAN edge in a hub-and-spoke network topology.
The entire network is in a single OSPF area. Spoke routers are connected to unreliable WAN links. Which two changes must be made to deploy LSA filtering on the spoke routers? (Choose two.)

• A.Configure the hub routers as ABRs
• B.Place spoke routers in stub areas
• C.Keep the spoke routers in normal areas
• D.Place spoke routers in totally stubby areas
• E.Configure the hub routers as ASBRs

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Refer to the exhibit.

You are designing a spanning-tree network for a small campus. Which two of these options would result in a trouble-free spanning-tree network design? (Choose two.)

• A.Convert all ports to trunk ports, prune off the VLANs that you do not require, and minimize the number of blocking ports.
• B.Convert all the ports to trunk and enable UplinkFast between all the links.
• C.Convert all the ports to trunk and enable BackboneFast.
• D.Introduce Layer 3 VLANs (SVIs) and prune off the VLANs that you do not require.

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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.Install additional APs in monitor mode where the cochannel interference would otherwise be affected.
• C.Add access points along the perimeter of the coverage area.
• 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.

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