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Which type of packet is sent by a DHCP server after receiving a DHCP Discover message?
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What is a description of the 3-way handshake?
The following steps explain how the 3-way handshake works. A host or client asks a server if it is open for a connection by sending a SYN data packet over the IP. If there is an open port for a new connection, the server sends an ACK packet to acknowledge the request. On receiving the ACK packet, the client sends back an ACK packet to establish the connection.
What is DHCP discover?
The Dynamic Host Configuration Protocol (DHCP) lease process consists of four processes. The processes are 1. Discover 2. Offer 3. Request 4. Acknowledgment In the Discover process the DHCP client initiates the process by trying to discover any DHCP servers in the network. This discover packet is a broadcast packet.
Which type of server assigns ip addresses to clients on a temporary or lease basis?
The DHCP server (Dynamic Host Configuration Protocol)What is DHCP?Dynamic Host Configuration Protocol (DHCP) is a network protocol that enables a server to automatically assign an IP address to a computer from a defined range of numbers (i.e., a scope) configured for a given network. DHCP assigns an IP address when a system is started, for example:A user turns on a computer with a DHCP client.The client computer sends a broadcast request (called a DISCOVER or DHCPDISCOVER), looking for a DHCP server to answer.The router directs the DISCOVER packet to the correct DHCP server.The server receives the DISCOVER packet. Based on availability and usage policies set on the server, the server determines an appropriate address (if any) to give to the client. The server then temporarily reserves that address for the client and sends back to the client an OFFER (or DHCPOFFER) packet, with that address information. The server also configures the client's DNS servers, WINS servers, NTP servers, and sometimes other services as well.The client sends a REQUEST (or DHCPREQUEST) packet, letting the server know that it intends to use the address.The server sends an ACK (or DHCPACK) packet, confirming that the client has a been given a lease on the address for a server-specified period of time.
How does a client notify a server that an ASCII data transfer is requested?
Packet 23 is a request from the client to start the data packet transfer from the server. The text STOR text.txt signifies this.
What is the purpose of TCP or UDP port?
1) On the server side, to distinguish different applications. Thus, if the server (the server computer) receives a data packet for port 80, it will usually be forwarded to the Web server; but if it receives a data packet for port 21, it will be forwared to the FTP server. 2) On the client side, to distinguish different conversations. For example, if the browser accesses two files from the same Web server at the same time, the first file might be assigned, for example, port 1024 (for the sending port; the receiving port will be 80), while the next file might be assigned port 1025. When a data packet is sent back for port 1025, in this example the browser knows that it is for the second file.
What server gives the PC its subnet mask and default gateway?
a dhcp server.............What is DHCP?Dynamic Host Configuration Protocol (DHCP) is a network protocol that enables a server to automatically assign an IP address to a computer from a defined range of numbers (i.e., a scope) configured for a given network.DHCP assigns an IP address when a system is started, for example:A user turns on a computer with a DHCP client.The client computer sends a broadcast request (called a DISCOVER or DHCPDISCOVER), looking for a DHCP server to answer.The router directs the DISCOVER packet to the correct DHCP server.The server receives the DISCOVER packet. Based on availability and usage policies set on the server, the server determines an appropriate address (if any) to give to the client. The server then temporarily reserves that address for the client and sends back to the client an OFFER (or DHCPOFFER) packet, with that address information. The server also configures the client's DNS servers, WINS servers, NTP servers, and sometimes other services as well.The client sends a REQUEST (or DHCPREQUEST) packet, letting the server know that it intends to use the address.The server sends an ACK (or DHCPACK) packet, confirming that the client has a been given a lease on the address for a server-specified period of time.When a computer uses a static IP address, it means that the computer is manually configured to use a specific IP address. One problem with static assignment, which can result from user error or inattention to detail, occurs when two computers are configured with the same IP address. This creates a conflict that results in loss of service. Using DHCP to dynamically assign IP addresses minimizes these conflicts.
What is called server socket layer?
socket layer is a interface between sender server and the receiving server
What should a network administrator do first after receiving a call from a user who cannot access the company web server?
• Ask the user what URL has been typed and what error message displays.
Where do emails wait between one computer and another if your computer is not switched on?
They will be saved on the servers of the receiving user's email provider. For example, say I send a message to example@gmail.com. The email is sent to the servers at gmail.com, where it will wait until my friend logs on to receive it. Even if my friend were logged on at the time I sent the email, it would always pass through this server before reaching him. This transmission of email from the sender to the recipient follows a process called "Store and Forward". A single email message passes through several, maybe dozens of servers before it reaches its destination. Each server stores the message until it the next server is ready to receive it, at which time the server forwards the message to the next server along the chain. The last server in the chain (the server you download your email from) stores the message until your email client application program is ready to receive it, at which time the server forwards the stored message to your computer.
What are the protocols that send and deliver mail?
An email message is created using a mail client program. This program then sends the message to a server. The server then forwards the message to the recipient's email server, where the message is then supplied to the recipient's email client. It's delivered using a server architectureBy L.S.
Dynamic IP addressing is performed by what?
for IPv4, Addresses are assigned to devices by a DHCP (Dynamic Host Control Protocol) server on that network link (if any). The server listens for broadcast (meaning, a packet sent to "anyone" or 0.0.0.0) Discover packets. The server Offers and a negotiation (DORA) ends in the device having it's unique address for that network.
How Computer connected to a server?
through an ISP, or internet service provider, that directs your packet to your server which sends information back.
