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Q. Describe Mail Access Protocols?
Mail Access Protocols
- Used by receiver to retrieve mail when desired
- Post Office Protocol, version 3 (POP3) is a simple limited protocol to access mail
- Assumes entire mailbox is transferred when accessed
- Internet Mail Access Protocol, version 4 (IMAP4) has more features and functions
What is use of Carrier sense multiple access Carrier sense multiple access with collision detection (CSMA/CD) is a form of medium access control in which a station listens to
Define the term - Graphics Interchange Format A type of graphics file found frequently on the .net. A picture of a vice-president, for example, may appear on the Intranet as
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
In reg-mem architecture, clock cycle is 10 ns wide. It is proposed that reg-reg architecture be used instead, that reduces the clock cycle by 2 ns. However, it requires an addition
system files
File servers are useful for sharing files through a network. With a file server, the client passes requests for file records over network to file server
Connection oriented
Ans) The Transport Layer : Segments upper-layer applications. Establishes an end-to-end connection. Sends segments from one end host to another. Optionally, make sures
Distributed Shared Memory (DSM) systems copy a shared memory abstraction on loosely coupled architectures in order to allow shared memory programming despite missing hardware suppo
QUESTION 1 (a) Draw a use-case model for the above system. You must identify all possible actors and use-cases. (b) Assume you are using the Rational Unified Process a
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