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Question 69/90
Which of the following describe the DHCP Discover message?
* It uses FF:FF:FF:FF:FF:FF as a layer 2 broadcast.
* It uses UDP as the Transport layer protocol.
* It uses TCP as the Transport layer protocol.
* It does not use a layer 2 destination address.
* It uses FF:FF:FF:FF:FF:FF as a layer 2 broadcast.
* It uses UDP as the Transport layer protocol.
* It uses TCP as the Transport layer protocol.
* It does not use a layer 2 destination address.
Correct Answer: B
When a client sends a DHCP Discover message:
* It does not yet have an IP address, so it sends a Layer 2 broadcast (FF:FF:FF:FF:FF:FF).
* DHCP uses UDP, not TCP.
* Specifically, it uses UDP port 67 (server) and 68 (client).
* Layer 2 destination is broadcast - it certainly does use a Layer 2 address.
MTCNA Course Material - DHCP Process:
"The client broadcasts a DHCP Discover message to FF:FF:FF:FF:FF:FF using UDP ports 67 and 68." Rene Meneses MTCNA Study Guide - DHCP Message Types:
"DHCP uses UDP. Discovery messages are Layer 2 broadcasts to locate a DHCP server." MikroTik Wiki - DHCP Protocol Behavior:
"The Discover message uses UDP and broadcast MAC addressing."
Statements:
* 1: True (Layer 2 broadcast)
* 2: True (Uses UDP)
* 3: False (TCP not used)
* 4: False (Layer 2 destination address is broadcast)
############################################################
* It does not yet have an IP address, so it sends a Layer 2 broadcast (FF:FF:FF:FF:FF:FF).
* DHCP uses UDP, not TCP.
* Specifically, it uses UDP port 67 (server) and 68 (client).
* Layer 2 destination is broadcast - it certainly does use a Layer 2 address.
MTCNA Course Material - DHCP Process:
"The client broadcasts a DHCP Discover message to FF:FF:FF:FF:FF:FF using UDP ports 67 and 68." Rene Meneses MTCNA Study Guide - DHCP Message Types:
"DHCP uses UDP. Discovery messages are Layer 2 broadcasts to locate a DHCP server." MikroTik Wiki - DHCP Protocol Behavior:
"The Discover message uses UDP and broadcast MAC addressing."
Statements:
* 1: True (Layer 2 broadcast)
* 2: True (Uses UDP)
* 3: False (TCP not used)
* 4: False (Layer 2 destination address is broadcast)
############################################################
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