COMPUTER NETWORKS - III
(GLIMPSES)
(Ref : Content taken from Dhanpatrai & Co.(p) Ltd for XII students )
Twisted pair cable consists of two insulated copper wires twisted around each other. these are also used for short and medium range telephone communications.contains conductor, insulator, wire mesh and outer shield
Coaxial Cables have solid wire core surrounded by one or more foil or wire shields. It transmit electrical signals. bettern performance than twisted pair cable.
optical fibres consist of thin standard of glass or glass like material.It transmit light signals. It is very fast. It expensive. highly durable
Active Hubs electrically amplify the signal as it moves from one connected device to another. Active concentrators are used like repeaters to extend the length of a network.
Passive hubs allow the signal to pass from one computer to another without any change.
Bandwidth, Delay, Load, Reliability, Cost, Hop count, MTU and Ticks are common metrics used in routing tables for determining the best path for routing.
MIME is a supplementary protocol that allows non-ASCII data to be sent through SMTP.
Java Scripting is client and server side scripting
ASP server side scripting (Active Server Pages)
VB Script client side scripting
JSP server side scripting (Java Serve-let Pages)
Newsgroup is a discussion forum in the network news system.
IMAP was designed to help those users who multiple computers, perhaps a workstation in the office, The IMAP is for the e-mail server to maintain a central repository that can be accessed from any machine.
SMTP (Simple Mail Transfer Protocol) is a simple ASCII protocol. Internet system works because of SMTP it a part of TCP/IP.
PPP ( Point-to-Point Protocols )allows a computer to use the TCP/IP protocol and to be connected directly to the net using a standard voice telephone line and high-speed modem.
Telnet is an internet facility that facilitates remote login.
FTP (File Transfer Protocol) is a standard tool on the internet for transferring copies of files. FTP can be used to copy and file from one internet host to another.
SSH (Secure Socket Shell )protects user identities, passwords and data from network snooping attacks and allows secure login and file transfers.
SLIP (Serial Line Internet Protocol) is a protocol that allows a computer to use the internet protocol with a standard voice-grade telephone lines and high-speed modem.
Cookies is a small file that a web server can store on your machine.
Firewall is computer system or group of computer systems that reinforces information securely between two networks.
NFC ( Near Frequency Communication ) is a new short-range radio frequency communication protocol based on ISO Radio Frequency IDentification (RFID) standards.
XML ( Extensible Markup Language) is a plain-text, Unicode-based meta language: a language for defining markup language which was designed to transport and store data.
DHTML ( Dynamic Hyper Text Markup Language ) is not a programming language, and technically not a mark-up language either. It is a combination of scripting language, component object modeling and cascading style sheets (CSS)with HTML.
Java Scripting is client and server side scripting
ASP server side scripting (Active Server Pages)
VB Script client side scripting
JSP server side scripting (Java Serve-let Pages)
Newsgroup is a discussion forum in the network news system.
IMAP was designed to help those users who multiple computers, perhaps a workstation in the office, The IMAP is for the e-mail server to maintain a central repository that can be accessed from any machine.
SMTP (Simple Mail Transfer Protocol) is a simple ASCII protocol. Internet system works because of SMTP it a part of TCP/IP.
PPP ( Point-to-Point Protocols )allows a computer to use the TCP/IP protocol and to be connected directly to the net using a standard voice telephone line and high-speed modem.
Telnet is an internet facility that facilitates remote login.
FTP (File Transfer Protocol) is a standard tool on the internet for transferring copies of files. FTP can be used to copy and file from one internet host to another.
SSH (Secure Socket Shell )protects user identities, passwords and data from network snooping attacks and allows secure login and file transfers.
SLIP (Serial Line Internet Protocol) is a protocol that allows a computer to use the internet protocol with a standard voice-grade telephone lines and high-speed modem.
Cookies is a small file that a web server can store on your machine.
Firewall is computer system or group of computer systems that reinforces information securely between two networks.
NFC ( Near Frequency Communication ) is a new short-range radio frequency communication protocol based on ISO Radio Frequency IDentification (RFID) standards.
XML ( Extensible Markup Language) is a plain-text, Unicode-based meta language: a language for defining markup language which was designed to transport and store data.
DHTML ( Dynamic Hyper Text Markup Language ) is not a programming language, and technically not a mark-up language either. It is a combination of scripting language, component object modeling and cascading style sheets (CSS)with HTML.
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