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300-410 Exam - Question 274


Refer to the exhibit. Which two configurations allow clients to get dynamic IP addresses assigned? (Choose two.)

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Correct Answer: AE

In the context of allowing DHCP communication, DHCP clients use UDP port 68 to receive requests from DHCP servers, and DHCP servers use UDP port 67 to receive requests from DHCP clients. To ensure that clients can receive dynamic IP addresses, the access list needs to permit DHCP messages to and from both of these ports. Therefore, configuring `access-list 100 permit udp any any eq 68` and `access-list 100 permit udp any any eq 67` addresses both sides of the DHCP communication process.

Discussion

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god_fatherOptions: AE
Feb 4, 2023

DHCP servers have a UDP port number of 67 DHCP clients have the UDP port number 68

guy276465281819372
Jul 27, 2023

Don't see why we need two answers, WE only need port 67 for server access.

[Removed]
Aug 14, 2023

you're right. The Client listens on 68 for the offer and ack parts of DORA, and because this ACL is inbound, port 68 should not matter as a destination port, it would matter as a source port.

guy276465281819372
Aug 23, 2023

exactly we only need 67 here

Commando1664
Mar 27, 2024

another amazing quesitons, we only need 67..but it asks for 2 so hey!

SeMo0o0o0Options: AE
Jul 21, 2024

A & E are corerct