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Simple Mail Transfer Protocoland Secure Sockets Layer
SMTP: Simple Mail Transfer Protocol is a server-to-server protocol for delivering electronic mail.
SSL: Secure Sockets Layer is a protocol designed to provide secure communications on the Internet.
Other than performance issues, there could be security reasons for using something like xinetd. Make simple design in which a new version of xinetd gives a layer of security.
Directly linked network have the lowest administrative distance of 0. They are considered the most reliable.
Q. Describe about Domain Name Space ? - Structure for systematize the name space in which names are defined in an inverted-tree structure with the root at the top - Every l
Use Packet Tracer software to model the network that you have designed, and configure the network to make sure it is running properly. The following requirements should be met:
What is the difference between CSMA/CD and CSMA/CA? CSMA/CD, or Collision Detect, retransmits data frames when a collision occurred. CSMA/CA, or Collision Avoidance, will first
Q Illustrate Unipolar line coding? - Simplest method is inexpensive - Utilizes only one voltage level - Polarity is habitually assigned to binary 1 a 0 is represented by
One of the key roles of a System/Network Administrator is to monitor log files. This usually requires helper scripts (i.e. Perl programs) so a summary of large log files can be qui
A modified NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; inverting bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make the
Mail Access Protocols The e mail message are usually sent to an email server that stores received message in the recipient e mail mailbox. The user retrieves messa
What is CRC The CRC is computed while transmission and appended to output stream as soon as last bit goes out onto wire. If the CRC were in header, it will be necessary to make
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