Cisco CCDE 400-007 Questions & Answers

• Question 151:

  Which two factors must be considered for high availability in campus LAN designs to mitigate concerns about unavailability of network resources? (Choose two.)

  A. device resiliency

  B. device type

  C. network type

  D. network resiliency

  E. network size

  Correct Answer: AD

• Question 152:

  In search of a system capable of hosting, monitoring compiling. and testing code in an automated way, what can be recommended to the organization?

  A. Jenkins

  B. Ansible

  C. Perl

  D. Chef

  Correct Answer: A

• Question 153:

  Refer to the exhibit.

  

  As part of a redesign project, you must predict multicast behavior. What happens to the multicast traffic received on the shared tree (*,G), if it is received on the LHR interface indicated*?

  A. It is dropped due to an unsuccessful RPF check against the multicast source

  B. It is switched give that no RPF check is performed

  C. It is switched due to a successful RPF check against the routing table

  D. It is dropped due to an unsuccessful RPk8t8ck against the multicast receiver.

  Correct Answer: C

  https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/16450- mcastguide0.html When a multicast packet arrives on an interface, the RPF process checks to ensure that this incoming interface is the outgoing interface used by unicast routing in order to reach the source of the multicast packet. This RPF check process prevents loops. Multicast routing does not forward a packet unless the source of the packet passes a RPF check. Once a packet passes this RPF check, multicast routing forwards the packet based only upon the destination address.

• Question 154:

  Refer to the exhibit.

  

  Which impact of using three or more ABRs between the backbone area and area 1 is true?

  A. In a large-scale network LSA replication by all ABRs can cause serious scalability issues

  B. Multiple ABRs reduce the CPU processing on each A6R due to splitting prefix advertisement

  C. In a large-scale network multiple ABRs can create microloops.

  D. Prefixes from the non-backbone area are advertised by one ABR to the backbone

  Correct Answer: A

• Question 155:

  An enterprise requires MPLS connected branches to access cloud-based Microsoft 365 services over an SD-WAN solution. Internet access Is available only at dual regional hub sites that are connected to the MPLS network. Which connectivity method provides an optimum access method to the cloud-based services If one ISP suffers loss or latency?

  A. Cloud onRamp gateway site

  B. Cloud onRamp SWG

  C. Cloud onRamp

  D. Cloud onRamp SaaS

  Correct Answer: D

  Cloud OnRamp gateway site is only one of a few method to optimise SAAS connectivity within a SDWAN implementation. the overarching solution is 'Cloud OnRmap SAAS'. with the options provided D is the most accurate answer

  https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/cloudonramp/vedge-20-x/cloud-onramp-book-vedge/cor-saas.html#common-scenarios-cor-saas-b

• Question 156:

  Which relationship between IBGP and the underlying physical topology is true?

  A. iBGP full mesh requirement does not dictate any specific network topology.

  B. iBGP can worn only on a ring network topology with a link-state protocol like OSPF or IS-IS

  C. iBGP full mesh requires an underlying fully meshed network topology.

  D. iBGP does not work on a ring network topology even with an underlying IGP.

  Correct Answer: A

  iBGP peers can be multiple hops away. not like eBGP that needs direct connection (or ebgp-multihop defined). thus, only IP connectivity between two peers is required for an adjacency to form. the logical topology can be full mesh, even if the underlying IP transport is not

• Question 157:

  Refer to the exhibit.

  

  Company XYZ BGP topology is as shown in the diagram. The interface on the LA router connected toward the 10 1.5.0/24 network is faulty and is going up and down, which affects the entire routing domain. Which routing technique can the network administrator use so that the rest of the network is not affected by the flapping issue?

  A. The LA administrator should use route aggregation to summarize the 10 1 4.0/24, 10 1 5 0/24, 10.1.6.0/24, and 10 1 7 0/24 networks toward Chicago

  B. The LA administrator should use route dampening for the 10.1.5 0/24 network so that it does not get propagated when it flaps up and down.

  C. The LA administrator should use route filtering to block the 10.1.5.0/24 network from getting propagated toward Chicago and New York.

  D. The Chicago administrator should use route filtering to block the 10.1.5.0/24 network from coming in from the LA router.

  Correct Answer: B

• Question 158:

  Refer to the exhibit.

  

  This network is running EIGRP as the routing protocol and the internal networks are being advertised in EIGRP. Based on the link speeds, all traffic between London and Rome is getting propagated via Barcelona and the direct link between London and Rome is not being utilized under normal working circumstances. The EIGRP design should allow for efficiency in the routing table by minimizing the routes being exchanged. The link between London and Rome should be utilized for specific routes. Which two steps accomplish this task? (Choose two.)

  A. Configure EIGRP route summarization on all the interfaces to summarize the internal LAN routes

  B. Filter the routes on the link between London and Barcelona

  C. Filter the routes on the link between London and Rome

  D. Configure route leaking of summary routes on the link between London and Rome

  Correct Answer: AD

• Question 159:

  Company XYZ wants to use the FCAPS ISO standard for network management design. The focus of the design should be to minimize network outages by employing a set of procedures and activities to detect and isolate network issues and the appropriate corrective actions to overcome current issues and prevent them from occurring again. Which layer accomplishes this design requirement?

  A. fault management

  B. performance management

  C. security management

  D. accounting management

  Correct Answer: A

• Question 160:

  

  Refer to the exhibit A service provider has a requirement to use Ethernet OAM to detect end-to-end connectivity failures between SP-SW1 and SP- SW2. Which two ways to design this solution are true? (Choose two)

  A. Enable unicast heartbeat messages to be periodically exchanged between MEPs

  B. Enable Connectivity Fault Management on the SP switches

  C. Use upward maintenance endpoints on the SP switches

  D. Forward E-LMI PDUs over VPLS

  E. Forward LLD PDUs over the VPLS

  Correct Answer: BC