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 toensure
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.
Answer: BC
Explanation:
Shouldn’t the answer be B and D?
I agree aggregate routes should be configured on the distribution routers. These summaries should also be advertised by BGP (on the MPLS WAN interfaces of the distribution routerss) which would be choice D.
Advertising a default route from each distribution router into the MPLS network doesn’t make sense to me.
Took the Cisco 352-001 CCDE Written Exam last weekend, passed with a not bad score, 910/1000 marks! (Though not the highest, a passing is a passing, am I right?)
Many new questions in the Layer 2/Layer 3 sections, please pay close attention to them, and Network Virtualization and Design Considerations sections were easy to answer, for me, I have in-depth knowledge about Network Engineering and Network Design.
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Also, I learned many study materials including the Cisco official study guide and Definitive MPLS Network Designs and Optimal Routing Design (all by Cisco Press) and so on.
BTW, before 25/July/2016, this exam have only 4 topics: Layer 2 Control Plane/Layer 3 Control Plane/Network Virtualization/Design Considerations, but after 25/July/2016, the 352-001 CCDE Written Exam gets one new topic: Evolving Technologies (10%).
Best Regards!!!
“Which two design solutions can be applied to ensure
that your access routers will be able to reach all devices in your network? ”
Last line makes me think B and D would be best answer.
C doesn’t sound like it would work for that requirement.
It would be different if it said something like “advertise TO access layer” instead of “to MPLS” (although that would not make much sense when the question is about the MPLS not being able to handle the amt of prefixes…).
New 352-001 Exam Questions Updated Recently (26/Mar/2017):
NEW QUESTION 415
Which statement describes the main difference between the Layer 2 loop-free inverted U design and the Layer 2 loop-free U design?
A. A loop-free U design has all uplinks active, but a loop-free inverted U design does not.
B. A loop-free inverted U design has all uplinks active, but a loop-free U design does not.
C. A loop-free U design extends VLANs between access switches, but a loop-free inverted U design does not.
D. A loop-free U design extends VLANs between distribution switches, but a loop-free inverted U design does not.
Answer: C
NEW QUESTION 416
An enterprise company needs to transport multicast traffic between its hub-and-spoke WAN routers over an MPLS Layer 3 VPN provider that does not currently support multicast. Which option describes how this enterprise how this enterprise can achieve this requirement in a cost-effective way?
A. Use MSDP over the WAN.
B. Enable multicast routing on the WAN physical and tunnel interfaces.
C. Create multicast-enabled GRE tunnels over the WAN between the hub-and-spoke routers.
D. Provide an Internet link to each site and use DMVPN over the Internet.
Answer: C
NEW QUESTION 417
In a Cisco ACI environment, which option best describes “contracts”?
A. a set of interaction rules between endpoint groups
B. a Layer 3 forwarding domain
C. to determine endpoint group membership status
D. named groups of related endpoints
Answer: C
NEW QUESTION 418
You are developing the routing design for two merging companies that have overlapping IP address space. What must you consider when developing the routing and NAT design?
A. Global to local NAT translation is done before routing.
B. Local to global NAT translation is done after routing.
C. Global to local NAT translation is done after policy-based routing.
D. Local to global NAT translation is done before policy-based routing.
Answer: D
NEW QUESTION 419
Which option should be part of your network design to support dynamic mutual redistribution between multiple OSPFv2 and IS-IS boundaries, to avoid suboptimal routing?
A. route tagging and administrative policies
B. route filtering and administrative policies
C. route aggregation and administrative policies
D. disabling IS-IS wide metrics
Answer: B
NEW QUESTION 420
After a large EIGRP network had automatic summarization enabled throughout, it started experiencing routing loops. Which action should you take to quickly resolve the routing loops yet continue to perform summarization?
A. Replace the automatic summarization with more specific summary routes.
B. Redesign the IP addressing scheme.
C. Redistribute connected routes at major IP network boundaries.
D. Increase the AD of the automatically summarized routes.
Answer: A
NEW QUESTION 421
Which openstack component implements role-based access control?
A. Horizon
B. Nova
C. Neutron
D. Keystone
Answer: A
NEW QUESTION 422
Service provider XYZ wants to implement IPv6 on their MPLS network using MPLS 6PE or 6VPE techniques. Currently XYZ providers IPv4 multicast services over an MPLS network by using MVPN, and wants to provide parallel IPv6 multicast services. Which two multicast solutions enable the IPv6 multicast services? (Choose two.)
A. MVPN for IPv6 multicast service
B. MPLS 6PE, because it provides IPv6 multicast support by default
C. PIM-DM to enable IPv6 multicast in conjunction with MPLS 6PE/6VPE
D. an overlay model using Layer 2 MPLS tunnels
E. MPLS 6VPE, because it provides IPv6 multicast support by default
Answer: AD
NEW QUESTION 423
Which statement about DHCPv6 Guard features design is true?
A. A certificate must be installed on the DHCPv6 server and relay agent.
B. DHCPv6 client requests can be rate-limited to protect the control plane.
C. Rogue DHCPv6 servers cannot assign IPv6 addresses to clients.
D. DHCPv6 client requests can be filtered to protect the data plane.
Answer: C
NEW QUESTION 424
You are designing a FabricPath network that connects to a spine-and-leaf topology using layer 2 IS-IS as the IGP. The solution should be able to detect changes in the network topology and calculate loop-free paths to other nodes in the network that are being used as top-of-rack switches. Which four options are characteristics of this FabricPath design solution? (Choose four.)
A. The FabricPath domain should be replaced because it does not run STP.
B. The switch operating system uses multiple equal-cost, parallel links that provide ECMP.
C. To use the basic FabricPath functionality, you must configure IS-IS on every interface between the leaf-and-spine switches.
D. FabricPath Layer 2 IS-IS uses the standard IS-IS functionality to populate up to 16 routes for a given destination switch.
E. This path is used for forwarding unicast Fabricpath frames.
F. Each switch computes its shortest path to every other switch in the network using the SPF algorithm.
G. The interfaces in a FabricPath network run only the FabricPath Layer 2 IS-IS protocol with FTags disabled.
Answer: BDEF
NEW QUESTION 425
Which Option is an example of SaaS?
A. Google Apps
B. Amazon AWs
C. Google App Engine
D. Microsoft Azure
Answer: A
NEW QUESTION 426
How should you compensate for jitter on an IP network so it carries real-time VolP traffic with acceptable voice transmission quality?
A. Set up VAD to replace gaps on speech with comfort noise.
B. Set up a playout buffer to play back the voice stream.
C. Deploy RSVP for dynamic VolP packet classification.
D. Change CODEC from G.729 to G.711.
Answer: B
NEW QUESTION 427
A company decided to replace IEEE 802.1s on the campus and you must propose a Layer 2 open standard technology that is highly scalable, ensures a resilient loop-free switched domain, and allows for utilizing all links in the Layer 2 domain. Which Layer 2 technology meets these requirements?
A. TRILL
B. VxLAN
C. LACP
D. FabricPath
E. MST
Answer: A
NEW QUESTION 428
A multinational enterprise company has many branches in the Americas, Europe, and Asia Pacific with headquarters in London. Branch offices use Ethernet (bandwidth range from 1 Mb/s to 10 Mb/s) as access technology to connect to the headquarters and the regional hubs. The company is currently implementing VolP and QoS in all their locations, and they are worried about jitter between their branches and the headquarters. Which option reduces the effect of jitter?
A. buffering at endpoints
B. Call Admission Control
C. increase the bandwidth of the links
D. WRED
Answer: A
NEW QUESTION 429
Which two functions are performed at the core layer of the three-layer hierarchical network design model? (Choose two.)
A. QoS classification and marking boundary
B. fast transport
C. reliability
D. fault isolation
E. load balancing
Answer: BC
NEW QUESTION 430
Which are two general SDN characteristics? (Choose two.)
A. OVSDB is an application database management protocol.
B. Northbound interfaces are open interfaces used between the control plane and the data plane.
C. OpenFlow is considered one of the first Northbound APIs used by SDN controllers.
D. Southbound interface are interfaces used between the control plane and the data plane.
E. The separation of the control plane from the data plane.
Answer: DE
NEW QUESTION 431
……
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Best Regards!