Quick Answer: Does TCP Use DHCP?

DHCP cannot use TCP as the transport protocol because TCP requires both end-points to have unique IP addresses.

At the time a host is required to use DHCP, it does not have an IP address it can source the packets from, nor does it have the IP address of the DHCP server.

So it uses 0.0.


The DHCP employs a connectionless service model, using the User Datagram Protocol (UDP). It is implemented with two UDP port numbers for its operations which are the same as for the BOOTP protocol. UDP port number 67 is the destination port of a server, and UDP port number 68 is used by the client.

Why is UDP used for DHCP and not TCP?

UDP is connectionless while TCP is connection oriented transport protocol, which means the TCP needs a specific destination address to be able to travel across the network. So, it’s impossible to use TCP instead of UDP for DHCP requests.

Does ICMP use TCP?

ICMP is a network-layer protocol. There is no TCP or UDP port number associated with ICMP packets as these numbers are associated with the transport layer above.

Does HTTP use TCP?

Usually, HTTP takes place through TCP/IP sockets. A browser is an HTTP client because it sends requests to an HTTP server (Web server), which then sends responses back to the client. HTTP is based on the TCP/IP protocols, and is used commonly on the Internet for transmitting web-pages from servers to browsers.

Where is TCP IP used?

TCP/IP, or the Transmission Control Protocol/Internet Protocol, is a suite of communication protocols used to interconnect network devices on the internet. TCP/IP can also be used as a communications protocol in a private computer network (an intranet or an extranet).

What layer is HTTP?

application layer

Is FTP a TCP or UDP?

FTP itself uses the TCP transport protocol exclusively, or in other words, it never uses UDP for its transport needs. Typically an application layer protocol will use one or the other. One notable exception to that is DNS or Domain Name System. FTP also is odd in the fact that it uses two ports to accomplish its task.

Does SSH use TCP or UDP?

The SSH protocol uses or has used 22/UDP for tunneling control through TCP. If decoded properly via Wireshark and you are tunneling a connection through via either ssh-agent or tunneling remotely or locally you would notice that UDP is encapsulated within the TCP segments.

What are the 4 steps of DHCP?

DHCP operations fall into four phases: server discovery, IP lease offer, IP lease request, and IP lease acknowledgement. These stages are often abbreviated as DORA for discovery, offer, request, and acknowledgement.

Is Ping a TCP protocol?

ICMP is part of TCP/IP protocol suite which resides on layer 3. If you want the closest map onto the OSI layers, the answer is probably 3.5: ICMP (which is what ping uses) is implemented directly on top of IP packets and doesn’t use a transport layer (OSI layer 4) like TCP or UDP.

Is Ping using TCP or UDP?

4 Answers. The standard ping command does not use TCP or UDP. It uses ICMP. To be more precise ICMP type 8 (echo message) and type 0 (echo reply message) are used.

Is ARP a TCP or UDP?

ARP requests are not sent using ports, they are broadcast traffic and it could not work else way, since ARP traffic is used by IP protocol to find out relationship between MAC address (data link layer) and IP address (network layer), not TCP/UDP (which is transport layer).

Is port 443 TCP or UDP?

Port 443 Details


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Is port 80 TCP or UDP?

Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) but unlike TCP on Port 80, UDP Port 80 is connectionless and does not guarantee reliable communication; it’s up to the application that received the message on Port 80 to process any errors and verify correct delivery.

What is TCP IP in networking?

TCP/IP stands for Transmission Control Protocol/Internet Protocol, which is a set of networking protocols that allows two or more computers to communicate. The Defense Data Network, part of the Department of Defense, developed TCP/IP, and it has been widely adopted as a networking standard.