For IST we have to answer questions and place on our blog. These are it, so yeah.
Define the term – Protocol
Protocols are a set of standards which allow computer to computer connection, which are determined by the method used to transmit data between networks and computing devices. The protocol also uses the data compression method to determine when the sending device has finished and how the receiving device has received the message.
What are the following protocols used for?
TCP/IP: TCP/IP also known as the Transmission Control Protocol/Internet Protocol is used to maintain an error free connection between two computers. The IP protocol is used to send data packets over the network.
HTTP: HTTP also known as the Hypertext Transfer Protocol is a protocol which allows browsing to occur on the World Wide Web, by allowing the user to access a hypertext document to bound to another document to retrieve and access information.
SMTP: SMTP also known as Simple Mail Transfer Protocol is used to send mail between servers; from your mail client to a mail server.
FTP: FTP also known as File Transfer Protocol is principle way of transferring files between computers and across the internet. It is commonly used for sending files between two computers.
What does GUI stand for? What was used before GUI?
A GUI also known as a Graphic User Interface is an interface between the user and system which allows the users to enter commands into the computer in a graphic against keystroke method. It is compromised of icons and graphics allowing the program to have a simplistic design to use.
There are two methods of data transmission – serial and parallel. Explain the difference between them.
A serial data transmission (serial output) is a form of data communication in which character bits are sent one at a time through one transmitting path. The parallel data transmission (parallel output) is a form of data transmitting in which bits of data are all simultaneously resulting in fast communication but requires a transmitting path for each.
Define the term “URL”. Explain the components that make up the URL.
The Uniform Resource Locator (URL) is a server used in an HTML to locate documents. The URL is composed of four units:
Scheme: the scheme identifies protocols to be used to access data and information on the internet.
Host: Used to indentify the host that holds resources
Path: Identifies the specific resource within the host which a browsers want access to.
Query String: follows the path component and provides information that can be used for a specific purpose.
In the context of data transmission, what is “error detection”?
Error Detection coding is a systems with various techniques designed to locate misinterpreted messages.
Name and explain one common method of error detection.
Cyclic Redundancy Check (CRC)
A cyclic redundancy check is a function which takes an input of data stream and produces an output with the same value. The Cyclic Redundancy Check can be used as a checksum to locate alterations during the transmission of data.
