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Exam 350-401 topic 1 question 165 discussion

Actual exam question from Cisco's 350-401
Question #: 165
Topic #: 1
[All 350-401 Questions]


Refer to the exhibit. R1 is able to ping the R3 fa0/1 interface. Why do the extended pings fail?

  • A. The maximum packet size accepted by the command is 1476 bytes.
  • B. The DF bit has been set.
  • C. R3 is missing a return route to 10.99.69.0/30.
  • D. R2 and R3 do not have an OSPF adjacency.
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Suggested Answer: B 🗳️
by [deleted] at May 10, 2021, 1:42 p.m.

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Caradum
Highly Voted 2 years ago
B ist correct. R1 sends the ping with a packet size of 1500 and the DF bit set (=R1 is not allowed to fragment the ping). R2 only accepts packets with the size of 1492. Therefor the ping gets discarded from R2. To solve this, dont set the DF bit or lower the packet size.
upvoted 9 times
AbdullahMohammad251
3 months ago
You can also reduce the datagram size for the extended ping
upvoted 1 times
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youtri
Highly Voted 2 years, 8 months ago
DF=1 dont fragment DF=0 fragment
upvoted 8 times
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kipson
Most Recent 1 week, 3 days ago
Selected Answer: B
The correct answer is B. The DF bit has been set. The DF (Don't Fragment) bit is set, and the packet size exceeds the maximum MTU of 1492 bytes, causing the extended ping to fail.
upvoted 1 times
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[Removed]
6 months, 3 weeks ago
Selected Answer: B
B is correct
upvoted 1 times
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brightsyds
2 years, 10 months ago
B! Because the do-not-fragment (DF) bit was set, the packet would be discarded
upvoted 2 times
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SandyIndia
3 years, 3 months ago
Don't Fragment (DF) Bit is set.
upvoted 4 times
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[Removed]
3 years, 7 months ago
Given answer is correct
upvoted 2 times
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