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Home Cisco® 400-007

Cisco® 400-007 Exam Practice Questions (P. 5)

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Question #41
DRAG DROP -
Drag and drop the multicast protocols from the left onto the correct design situations on the right.
Select and Place:


Correct Answer:

Question #42
Company XYZ, a global content provider, owns data centers on different continents. Their data center design involves a standard three-layer design with a Layer
3-only core. HSRP is used as the FHRP. They require VLAN extension across access switches in all data centers, and they plan to purchase a Layer 2 interconnection between two of their data centers in Europe. In the absence of other business or technical constraints, which termination point is optimal for the
Layer 2 interconnection?
  1. A
    at the core layer, to offer the possibility to isolate STP domains
  2. B
    at the aggregation layer because it is the Layer 2 to Layer 3 demarcation point
  3. C
    at the access layer because the STP root bridge does not need to align with the HSRP active node
  4. D
    at the core layer because all external connections must terminate there for security reasons

Correct Answer:
B

Question #43

Refer to the exhibit. An engineer is designing the network for a multihomed customer running in AS 111 AS 111 does not have any other ASs connected to it.
Which technology is more comprehensive to use in the design to make sure that the AS is not being used as a transit AS?
  1. A
    Include an AS path access list to send routes to the neighboring ASs that only have AS 111 in the AS path field.
  2. B
    Configure the AS-set attribute to allow only routes from AS 111 to be propagated to the neighbor ASs.
  3. C
    Use the local preference attribute to configure your AS as a "non-transit" AS.
  4. D
    Include a prefix list to only receive routes from neighboring ASs.

Correct Answer:
A

Question #44
Which interconnectivity method offers the fastest convergence in the event of a unidirectional issue between three Layer 3 switches connected together with routed links in the same rack in a data center?
  1. A
    Fiber Ethernet connectivity with UDLD enabled
  2. B
    Copper Ethernet connectivity with UDLD enabled
  3. C
    Fiber Ethernet connectivity with BFD enabled
  4. D
    Copper Ethernet connectivity with BFD enabled

Correct Answer:
C

Question #45
You want to mitigate failures that are caused by STP loops that occur before UDLD detects the failure or that are caused by a device that is no longer sending
BPDUs. Which mechanism do you use along with UDLD?
  1. A
    BPDU guard
  2. B
    root guard
  3. C
    loop guard
  4. D
    BPDU filtering

Correct Answer:
C

Question #46
Company XYZ needs advice in redesigning their legacy Layer 2 infrastructure. Which technology should be included in the design to minimize or avoid convergence delays due to STP or FHRP and provide a loop-free topology?
  1. A
    Use BFD.
  2. B
    Use switch clustering in the core/distribution layer.
  3. C
    Use spanning-tree PortFast.
  4. D
    Use switch clustering in the access layer.

Correct Answer:
B

Question #47
DRAG DROP -
Drag and drop the multicast protocols from the left onto the correct design situations on the right. Not all options are used.
Select and Place:


Correct Answer:

Question #48
Which function is performed at the access layer of the three-layer hierarchical network design model?
  1. A
    fast transport
  2. B
    reliability
  3. C
    fault isolation
  4. D
    redundancy and load balancing
  5. E
    QoS classification and marking boundary

Correct Answer:
E

Question #49
Which two features control multicast traffic in a VLAN environment? (Choose two.)
  1. A
    RGMP
  2. B
    PIM snooping
  3. C
    MLD snooping
  4. D
    pruning
  5. E
    IGMP snooping

Correct Answer:
DE

Question #50
In an OSPF network with routers connected together with Ethernet cabling, which topology typically takes the longest to converge?
  1. A
    squared
  2. B
    ring
  3. C
    partial mesh
  4. D
    triangulated
  5. E
    full mesh

Correct Answer:
B

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