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Exam 350-401 topic 1 question 273 discussion

Actual exam question from Cisco's 350-401
Question #: 273
Topic #: 1
[All 350-401 Questions]

What is the result of applying this access control list?
ip access-list extended STATEFUL
10 permit tcp any any established
20 deny ip any any

  • A. TCP traffic with the URG bit set is allowed.
  • B. TCP traffic with the SYN bit set is allowed.
  • C. TCP traffic with the ACK bit set is allowed.
  • D. TCP traffic with the DF bit set is allowed.
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Suggested Answer: C 🗳️
by P1Z7C at March 23, 2021, 5:09 p.m.

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P1Z7C
Highly Voted 3 years, 10 months ago
The established keyword indicates that packets belong to an existing connection if the Transmission Control Protocol (TCP) datagram has the Acknowledgment (ACK) or Reset (RST) bit set. https://community.cisco.com/t5/networking-documents/how-to-configure-acls-to-permit-only-established-connections-and/ta-p/3127503
upvoted 6 times
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shefo1
Most Recent 1 year, 2 months ago
Selected Answer: C
of course C is right because two nodes is connected and established together when ACK message is send from source to destination first message : SYN from source to destination second message : SYN,ACK from destination to source thied message : ACK from source to destination
upvoted 1 times
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vladik820
1 year, 4 months ago
Selected Answer: C
Yes, the answer is correct
upvoted 1 times
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anonymous1966
3 years, 5 months ago
Correct - https://www.cisco.com/c/en/us/support/docs/ip/access-lists/26448-ACLsamples.html
upvoted 4 times
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