Cisco 400-007 Practice Exams
Last updated on Apr 09,2025- Exam Code: 400-007
- Exam Name: Cisco Certified Design Expert
- Certification Provider: Cisco
- Latest update: Apr 09,2025
Refer to the exhibit.
This network is running OSPF as the routing protocol. The internal networks are being advertised in OSPF London and Rome are using the direct link to reach each other although the transfer rates are better via Barcelona.
Which OSPF design change allows OSPF to calculate the proper costs?
- A . Change the OSPF reference bandwidth to accommodate faster links.
- B . Filter the routes on the link between London and Rome
- C . Change the interface bandwidth on all the links.
- D . Implement OSPF summarisation to fix the issue
Router R1 is a BGP speaker with one peering neighbor over link "A". When the R1 link/interface "A" fails, routing announcements are terminated, which results in the tearing down of the state for all BGP routes at each end of the link.
What is this a good example of?
- A . fault isolation
- B . resiliency
- C . redundancy
- D . fate sharing
While reviewing an existing network design, you are discussing the characteristics of different STP versions.
Which protocol minimizes unicast flooding during a Topology Change Notification in a Layer 2 switched network with many VLANs?
- A . PVRSTP
- B . MST
- C . STP
- D . PVSTP+
You are designing a network running both IPv4 and IPv6 to deploy QoS.
Which consideration is correct about the QoS for IPv4 and IPv6?
- A . IPv4 and IPv6 traffic types can use use queuing mechanisms such as LLQ, PQ and CQ.
- B . IPv6 packet classification is only available with process switching, whereas IPv4 packet classification is available with both process switching and CEF.
- C . IPv6 and IB/4 traffic types can use a single QoS policy to match both protocols
- D . Different congestion management mechanisms need to be used for IPv4 and IPv6 traffic types
Company XYZ has two routing domains in their network, EIGRP and OSPF. The company wants to provide full reachability between the two domains by implementing redistribution on a router running both protocols. They need to design the redistribution in a way that the OSPF routers will see link costs added to external routes.
How must the redistribution strategy be designed for this network?
- A . Redistribute using metric type 2 into OSPF.
- B . Redistribute using metric type 1 into OSPF.
- C . Redistribute using metric type 1 into EIGRP.
- D . Redistribute using metric type 2 into EIGRP.
Company XYZ is running OSPF in their network. They have merged with another company that is running EIGRP as the routing protocol. Company XYZ now needs the two domains to talk to each other with redundancy, while maintaining a loop free environment. The solution must scale when new networks are added into the network in the near future.
Which technology can be used to meet these requirements?
- A . multipoint route-redistribution with route filtering using ACLs
- B . DUMP multipoint route-redistribution with route filtering using route tags
- C . DUMPS single point route-redistribution with route filtering using route tags
- D . DUMPS single point route-redistribution with route filtering using ACLs
Which design solution reduces the amount of IGMP state in the network?
- A . IGMP filtering
- B . IGMPv3 with PIM-SSM
- C . multiple multicast domains
- D . one multicast group address thorough network regardless of IGMP version
The Layer 3 control plane is the intelligence over the network that steers traffic toward its intended destination.
Which two techniques can be used in service provider-style networks to offer a more dynamic, flexible, controlled, and secure control plane design? (Choose two.)
- A . access control lists
- B . firewalls
- C . QoS policy propagation with BGP
- D . remote black-holing trigger
- E . prefix lists
As a network designer you need to support an enterprise with hundreds of remote sites connected over a single WAN network that carries different types of traffic, including VoIP, video, and data applications which of following design considerations will not impact design decision?
- A . Focus on the solution instead of the problem, which helps to reduce downtime duration
- B . The location of the data collection
- C . What direction the data or flows should be metered
- D . Identify traffic types and top talkers over this link
Company XYZ Is running a redundant private WAN network using OSPF as the underlay protocol. The current design accommodates for redundancy In the network, but it Is taking over 30 seconds for the network to reconverge upon failure.
Which technique can be Implemented In the design to detect such a failure in a subsecond?
- A . STP
- B . fate sharing
- C . OSPF LFA
- D . BFD
- E . flex links