You work as a network designer for a company that is replacing their Frame Relay WAN with an MPLS VPN service, where the PE-to-CE routing protocol is BGP. The company has 3000 routes in their distribution routers, and they would like to advertise their access routers through the MPLS network. Their service provider, however, only supports 1000 prefixes per VRF. Which two design solutions can be applied to ensure that your access routers will be able to reach all devices in your network? (Choose two.)
A. Use prefix lists on your distribution routers to control which routes are sent to the MPLS network.
B. On your distribution routers, configure null routes and aggregate routes for the prefixes in your network.
C. Configure your distribution routers to send a default route to the MPLS network.
D. Summarize the routes on the MPLS WAN interfaces of your distribution routers.
A junior engineer is implementing one of your optical designs and asks about CWDM (Coarse Wavelength Division Multiplexing). Which two features describe CWDM? (Choose two.)
A. typically used over long distances, but requires optical amplification
B. allows up to 32 optical carriers to be multiplexed onto a single fiber
C. shares the same transmission window as DWDM
D. uses the 850-nm band
E. Passive CWDM devices require no electrical power.
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
Which two statements accurately describe QoS in MPLS VPN (RFC 2547bis) networks? (Choose two.)
A. MPLS QoS is a scalable and simple solution because it only requires application at the Edge-LSR.
B. MPLS can force packets into specific paths and bandwidths based on Edge-LSR mapping of DSCP to EXP.
C. DiffServ information must be made known to the LSR in the MPLS header using the EXP field.
D. On egress from the Edge-LSR, the EXP field is used for PHB QoS towards the CE.
During a network design review, it is recommended that the network with a single large area should be broken up into a backbone and multiple nonbackbone areas. There are differing opinions on how many ABRs are needed for each area for redundancy. What would be the impact of having additional ABRs per area?
A. There is no impact to increasing the number of ABRs.
B. The SPF calculations are more complex.
C. The number of externals and network summaries are increased.
D. The size of the FIB is increased.
Which three statements accurately describe OSPF route summarization? (Choose three.)
A. OSPF routes can be summarized at any OSPF router in the network using area range or summary address commands.
B. OSPF internal routes can be summarized only at the ABRs.
C. OSPF type 5 external routes can be summarized only at the ASBRs.
D. Route summarization can lead to a more stable network.
E. OSPF internal routes are automatically summarized via type 3 summary LSAs.
F. A flat addressing scheme is required in order to summarize OSPF routes.
Which statement accurately describes how PIM sparse mode operates?
A. RPs can become bottlenecks, since multicast traffic must always flow through the RP and down the shared tree to get to the receivers.
B. RPs switch each traffic flow to the shortest path tree when more than one receiver is present.
C. If an RP fails and there is no backup RP, new sources that begin sending will not be discovered by the other PIM routers in the network.
D. If an RP fails and there is no backup RP, multicast traffic will cease flowing in the network.
A service provider has a Resilient Ethernet Protocol ring running as a metro backbone between its locations in one city. A customer wants to connect one site with one box redundant to the Resilient Ethernet Protocol ring at two different service provider locations. How can this be done without producing any Layer 2 loops within the network design?
A. Spanning tree at the service provider side only must be enabled.
B. Spanning tree at the customer side only must be enabled.
C. Flex Links at the service provider side only must be enabled.
D. Flex Links at the customer side only must be enabled.
E. EtherChannel at the service provider side and the customer side must be enabled.
F. Spanning tree at the service provider side and the customer side must be enabled.
G. Flex Links at the service provider side and the customer side must be enabled.
What are three drawbacks of VPLS? (Choose three.)
A. Direct-attached VPLS requires a full mesh of pseudowires.
B. VPLS cannot support IP bridging (as defined in the VPLS standard).
C. MAC scalability may be problematic, since customer MACs will be visible on the service provider network.
D. VPLS requires a large amount of multicast and broadcast replication.
A company has these requirements for access to their wireless and wired corporate LANs using 802.1x:
Client devices that are corporate assets and have been joined to the Active Directory domain are allowed access.
Personal devices must not be allowed access.
Clients and access servers must be mutually authenticated.
Which solution meets these requirements?
A. Protected Extensible Authentication Protocol/Microsoft Challenge Handshake Authentication Protocol Version 2 with user authentication
B. Extensible Authentication Protocol-Transport Layer Security with machine authentication
C. Extensible Authentication Protocol-Transport Layer Security with user authentication
D. Protected Extensible Authentication Protocol/Microsoft Challenge Handshake Authentication Protocol Version 2 with machine authentication
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