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Electronic Mail
One of the most popular internet services is electronic mail ( e mail). At the beginning of the internet era teh message sent by electronic mail were short and consisted of text only they let people exchange quick memos. Today electronic mail is such more complex. It allows a message to include text audio and video it also allows one message to sent to one or more recipients.
Figure presents a high level view of the internet of the internet mail system. It has three major components user agents mail servers, and the simple mail transfer protocol (SMTP). We now assume that a sender heena sending an e mail message to a recipient Harish. User agents allow users to read reply to forward save and compose message. When server when Harish wants to read a message his user agent retrieves the message from his mailbox in his mail server.
figure A high level view of the Internet e- mail system
Each recipient such as harsh has a mailbox located in one of the servers. Harish mail box manages and maintains the messages that have been sent to him. A messages starts its journey in the sender user agent travels to the sender mail server and travels to the recipient mail server where it is deposited in the recipient mail box when box authenticates Harish ( with user name and password). If Heena serve cannot deliver mail to Harish server Heena server holds the message in a message queue and attempts to transfer the message later.
Ethernet Addressing Every station on the network must have a unique physical address Offered by a six-byte physical address encoded on the network interface card (NIC)
The table below gives a summary of special IP addresses.
Single company or organization owns this. They are usually LAN technologies. There can be multiple LANs in a campus or building linked together. They are sometimes known Intranet.
There is no commonly accepted meaning for a TP monitor. According to Jeri Edwards' a TP Monitor is "an OS for transaction processing".
Full-Duplex Ethernet 10Base5 as well as 10Base2 are half-duplex Full-duplex raises capacity of each domain No require for CSMA/CD
Q. Show Coaxial Cable Connectors? - A most common is barrel connector (BNC) - T-connectors are utilized to branch off to secondary cables - Terminators are necessary for
How LANs connected to Internet. Doubling every 18 months means factor of four gains in 3 years. In 9 years, gain is then 43 or 64, which leads to 6.4 billion hosts. My intuitio
Q. What is Peripheral Connect Interface? PCI signify Peripheral Connect Interface. It's the revolutionary high speed expansion bus presented by Intel. With the growing signifi
Q. Security and Reciprocity of RSA? Security and Reciprocity of RSA - Kp and N are issued publicly. - Ks is kept secret. - Since the snooper does not know p and
What metrics are used by routing protocols to verify the best path?
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