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Q. Explain Multipurpose Internet Mail Extensions?
- The Multipurpose Internet Mail Extensions is an extension of SMTP that allows the transfer of multimedia and other non-ASCII messages
Mail Transfer Agent (MTA)
- Handles mail transfer across the Internet
- SMTP commands and responses are used to transfer messages between an MTA client and MTA server
- Occurs in three phases: message transfer, connection establishment and connection termination
State about the Bus Topology Comments 1 - Requires less cabling than a star network 2 - If there is a central cable problem entire netwo. rk goes down 3 - Less e
In OSI 7 layer model, a header, or possibly a trailer, can be added to the data unit at each layerI 7 layer, but we will define a simple virtual packet which contains only 8bit dat
Perfect Shuffle Permutation This was advised by Harold Stone (1971). Consider N objects each characterized by n bit number say X n-1, X n-2, X 0 (N is chosen such that N
How can you identify the IP class of a given IP address? By looking at the first octet of any given IP address, you can recognize whether it's Class A, B or C. If the first oct
Can you define the method of CIDR?
State the term - Lot of care required while programming It is a common and well-known saying that many developers of "secure systems" leave a "back door" way for themselves so
Coaxial Cable Coaxial cable carries signals of higher frequency ranges than those in twisted pair cable. In part because the two media are constructed quite differently.
Q. Show the Character-level Encryption? - Substitutional - Monoalphabetic - simplest form; also called Caesar cipher - Every character is replaced with another character
Suppose AES (or any block cipher) is used to encrypt data. Which mode of encryption covered in class is best suited for each of the following two scenarios and why? If more than on
What is difference between ARP and RARP? The address resolution protocol (ARP) is used to associate the 32 bit IP address with the 48 bit physical address, used by a host or a
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