Cisco 400-007 Online Practice Questions and Exam Preparation

Cisco 400-007 Online Questions & Answers

• Question 171:

  Company XYZ is migrating their existing network to IPv6 and they must plan for Layer 2 and Layer 3 devices Some of the access layer switches do not support IPv6, however, core and distribution switches fully support unicast and multicast routing. The company wants to minimize cost of the migration. Which migration strategy should be used in the design?

  A. The access layer switches must support IGMP snooping at a minimum. Any switches that do not support IGM snooping must be replaced.
  B. Upgrade the nonsupporting switches Otherwise, it will cause an issue with the migration.
  C. Layer 2 switches will not affect the implementation of IPv6. They can be included in the design in their current state.
  D. The access layer switches must support DHCPv6. Any switches that do not support DHCPv6 must be replaced.
  C. Layer 2 switches will not affect the implementation of IPv6. They can be included in the design in their current state.

• Question 172:

  A customer migrates from a traditional Layer 2 data center network into a new SDN-based. spine-and-leaf VXLAN EVPN data center within the same location. The networks are joined to enable host migration at Layer 2. Which activity should be completed each time a legacy network is migrated?

  A. The migrated VLAN should be pruned from the Layer 2 interconnects.
  B. The migrated network should have a VXLAN VNID configured within the new network.
  C. The migrated network should be advertised to the EVPN network as a Type 2 network.
  D. The migrated network should be added to the EVPN BGP routing.
  A. The migrated VLAN should be pruned from the Layer 2 interconnects.

• Question 173:

  During a pre-sales meeting with a potential customer, the customer CTO asks a question about advantages of controller-based networks versus a traditional network. What are two advantages to mention? (Choose two)

  A. Per device forwarding tables
  B. Programmatic APIs available per device
  C. Abstraction of individual network devices
  D. Distributed control plane
  E. Consistent device configuration
  C. Abstraction of individual network devices
  E. Consistent device configuration

• Question 174:

  Which two descriptions of CWDM are true? (Choose two)

  A. typically used over long distances, but requires optical amplification
  B. uses the 850nm band
  C. allows up to 32 optical earners to be multiplexed onto a single fiber
  D. shares the same transmission window as DWDM
  E. Passive CWDM devices require no electrical power
  D. shares the same transmission window as DWDM
  E. Passive CWDM devices require no electrical power

• Question 175:

  A network architect must redesign a service provider edge, where multiservice and multitenant PEs are currently present. Which design feature should be minimized in the new design to achieve reliability?

  A. bridging
  B. fate sharing
  C. redundancy
  D. unicast overlay routing
  B. fate sharing

• Question 176:

  Which action must be taken before new VoIP systems are implemented on a network to ensure that the network is ready to handle the traffic?

  A. scalability
  B. high latency
  C. low bandwidth
  D. security
  C. low bandwidth

• Question 177:

  When designing a WAN that will be carrying real-time traffic, what are two important reasons to consider serialization delay? (Choose two )

  A. Serialization delays are invariable because they depend only on the line rate of the interface
  B. Serialization delays are variable because they depend on the line rate of the interface and on the type of the packet being serialized.
  C. Serialization delay is the time required to transmit the packet on the physical media.
  D. Serialization delays are variable because they depend only on the size of the packet being serialized
  E. Serialization delay depends not only on the line rate of the interface but also on the size of the packet
  B. Serialization delays are variable because they depend on the line rate of the interface and on the type of the packet being serialized.
  D. Serialization delays are variable because they depend only on the size of the packet being serialized

• Question 178:

  Your company utilizes many different types of network transports and you want to increase the efficiency of the network Which solution can be used to improve network efficiency over PPPoE IPsec, and GRE networks'?

  A. PMTUD
  B. OATM
  C. IRDP
  D. Host Discovery Protocol
  A. PMTUD

• Question 179:

  Which two pain points are the most common for container technology adoption? (Choose two)

  A. Performance
  B. Security
  C. Cost
  D. Container deployment
  E. Skilled staff
  F. Compliance
  D. Container deployment
  E. Skilled staff

• Question 180:

  Which mechanism provides Layer 2 fault isolation between data centers?

  A. fabric path
  B. OTV
  C. advanced VPLS
  D. LISP
  E. TRILL
  B. OTV