A nonpersistent connection is the one that is closed after the server sends the requested object to the client. … With persistent connections, the server leaves the TCP connection open after sending responses and hence the subsequent requests and responses between the same client and server
can be sent
.
What is the difference between persistent and non-persistent?
The main difference is that if you are using
persistent delivery, messages are persisted to disk/database
so that they will survive a broker restart. When using non-persistent delivery, if you kill a broker then you will lose all in-transit messages.
What is the main difference between persistent HTTP and non-persistent HTTP?
Non-persistent and persistent are the two types of HTTP connections used to connect the client with the webserver. The non-persistent connection
has connection type 1.0
, while the persistent connection has connection type 1.1 .
What is the difference between persistent & non-persistent HTTP explain HTTP request & reply message format?
Non-Persistent Connection:
It requires connection setup again and again for each object to send
. Persistent connection: It does not require connection setup again and again. Multiple objects can use connection.
What is the difference between persistent HTTP with pipelining and persistent HTTP without pipelining?
c) Persistent HTTP with pipelining and without pipelining: 1. HTTP without pipelining: The client issues a new request only when the previous response has been received.
Total RTTs : 2 RTT + n RTT
(n number of documents) 2 HTTP with pipelining: Total RTTs : 2RTT + 1RTT.
What is the problem in non persistent CSMA?
Disadvantage of non-persistent CSMA
It reduces the bandwidth usage of network
. This is because the channel remains idle even if there are stations who have frames to transmit. This occurs since each station wait for a random time before attempting retransmission.
What is used in non persistent method?
Non persistent CSMA is a
non-aggressive transmission algorithm
. When the transmitting node is ready to transmit data, it senses the transmission medium for idle or busy. If idle, then it transmits immediately. … When the transmitting node is ready to transmit data, it senses the transmission medium for idle or busy.
What are HTTP connections?
HTTP persistent connections, also called HTTP keep-alive, or HTTP connection reuse, is
the idea of using the same TCP connection to send and receive multiple HTTP requests/responses
, as opposed to opening a new one for every single request/response pair.
What are HTTP protocols?
HTTP is a
protocol which allows the fetching of resources, such as HTML documents
. It is the foundation of any data exchange on the Web and it is a client-server protocol, which means requests are initiated by the recipient, usually the Web browser.
What is TCP connection?
Transmission Control Protocol (TCP) –
a connection-oriented communications protocol that facilitates the exchange of messages between computing devices in a network
. It is the most common protocol in networks that use the Internet Protocol (IP); together they are sometimes referred to as TCP/IP.
What is non persistent?
: not persistent: such as. a :
decomposed rapidly by environmental action
nonpersistent insecticides. b : capable of being transmitted by a vector for only a relatively short time nonpersistent viruses.
What is persistent in networking?
A persistent connection (HTTP persistent connection) is
a network communication channel that remains open for further HTTP requests and responses rather than closing after a single exchange
. … To maintain a persistent connection, TCP keep-alive packets are sent to prevent the connection from timing out.
What does a HTTP request contain?
HTTP requests are messages sent by the client to initiate an action on the server. Their start-line contain three elements:
An HTTP method, a verb (like GET , PUT or POST ) or a noun (like HEAD or OPTIONS )
, that describes the action to be performed.
Is HTTP 1.1 still used?
HTTP stands for hypertext transfer protocol, and it is the basis for almost all web applications. … Because it went through several stages of development, this first version of HTTP was called HTTP/1.1.
This version is still in use on the web
. In 2015, a new version of HTTP called HTTP/2 was created.
What is persistent HTTP with pipelining?
2.2 Pipelining. A client that supports persistent connections
MAY “pipeline
” its requests (i.e., send multiple requests without waiting for each response). A server MUST send its responses to those requests in the same order that the requests were received.
How does http2 improve performance of HTTP communication?
Specifically, it
allows interleaving of request and response messages on the same connection
and uses an efficient coding for HTTP header fields. It also allows prioritization of requests, letting more important requests complete more quickly, further improving performance.
