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Exam 400-007 All Questions

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Exam 400-007 topic 1 question 125 discussion

Actual exam question from Cisco's 400-007
Question #: 125
Topic #: 1
[All 400-007 Questions]

What is a description of a control plane action?

  • A. de-encapsulating and re-encapsulating a packet in a data-link frame
  • B. matching the destination MAC address of an Ethernet frame to the MAC address table
  • C. matching the destination IP address of an IP packet to the IP routing table
  • D. hosts locating routers that reside on attached links using the IPv6 Neighbor Discover Protocol
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Suggested Answer: D 🗳️

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gcpengineer
Highly Voted 1 year, 4 months ago
Selected Answer: C
routing decision is control plane
upvoted 5 times
biddid2
1 year, 3 months ago
Build up routing table is control plan, but here is processing the data packet direction refer the routing table only.
upvoted 3 times
nifengfei
1 year, 2 months ago
I agree. This a similar description for LAN switch but I think it is the same case for layer 3 routing. https://learningnetwork.cisco.com/s/question/0D53i00000Ksx1VCAR/what-is-the-difference-between-data-plane-control-plane
upvoted 1 times
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ba7a09d
Most Recent 1 month ago
Selected Answer: D
D for sure - Other 3 are data plane actions using constructs created by the control plane
upvoted 1 times
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Seawanderer
1 month, 2 weeks ago
Selected Answer: D
B & C are data plane, the destination has already been defined
upvoted 2 times
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bdp123
4 months ago
Selected Answer: D
The Neighbor Discovery Process (NDP) is that part of the control plane that implements the Neighbor Discovery protocol. https://www.rfc-editor.org/rfc/rfc6583.html
upvoted 3 times
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Rollizo
6 months ago
Selected Answer: D
C is data plane
upvoted 2 times
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DDDDFFFF
1 year ago
Selected Answer: D
D for sure. If matching the destination IP to the routing table is a control plain work then it will be way to slow and too busy to the router.
upvoted 1 times
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J_W
1 year, 1 month ago
Selected Answer: C
D. Hosts locating routers using the IPv6 Neighbor Discovery Protocol is part of the neighbor discovery process in IPv6 and is not solely related to control plane actions.
upvoted 2 times
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biddid2
1 year, 3 months ago
Selected Answer: D
The neighbor discovery process is that part of the control plane that implements the Neighbor Discovery Protocol. Bottom of page 40: https://www.juniper.net/documentation/us/en/software/junos/neighbor-discovery/neighbor-discovery.pdf
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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