Explain Working of ping, telnet, gopher?
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Answer / r.n.achary
ping is a computer network tool used to test whether a
particular host is reachable across an IP network. It works
by sending ICMP “echo request” packets to the target host
and listening for ICMP “echo response” replies. ping
estimates the round-trip time, generally in milliseconds,
and records any packet loss, and prints a statistical
summary when finished.
TELNET (TELecommunication NETwork) is a network protocol
used on the Internet or local area network (LAN)
connections. It was developed in 1969 beginning with RFC 15
and standardized as IETF STD 8, one of the first Internet
standards.
The term telnet also refers to software which implements
the client part of the protocol. TELNET clients have been
available on most Unix systems for many years and are
available for virtually all platforms. Most network
equipment and OSs with a TCP/IP stack support some kind of
TELNET service server for their remote configuration
(including ones based on Windows NT). Because of security
issues with TELNET, its use has waned as it is replaced by
the use of SSH for remote access.
"To telnet" is also used as a verb meaning to establish or
use a TELNET or other interactive TCP connection, as
in, "To change your password, telnet to the server and run
the passwd command".
Most often, a user will be telneting to a Unix-like server
system or a simple network device such as a switch. For
example, a user might "telnet in from home to check his
mail at school". In doing so, he would be using a telnet
client to connect from his computer to one of his servers.
Once the connection is established, he would then log in
with his account information and execute operating system
commands remotely on that computer, such as ls or cd.
On many systems, the client may also be used to make
interactive raw-TCP sessions, even when that option is not
available, telnet sessions are equivalent to raw TCP as
long as byte 255 never appears in the data.
packet internet gopher (PING)
Definition
Method used in determining the response time of an internet
connection. PING software sends a request to an website,
and times the receipt of reply (echo) called pong. A part
of the Internet Protocol, PING is not directly accessible
to the user.
packet internet gopher (PING) is in the Data Management,
Communications, & Networks and Internet & World Wide Web
subjects.
| Is This Answer Correct ? | 17 Yes | 11 No |
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