Hey Everyone!!!
This post is answers all the questions on the question sheet we were given. Hopefully I got them all right.
1. Define the term – Protocol
Protocol – a convention or standard that controls or enables the connection, communication and data transfer between two computing endpoints. In simple terms it’s a set of technical rules for the transmission and receipt of information between computers.
2. What are the following protocols used for?
TCP /IP – A Protocol used for transmitting data between computers and as the basis for standard protocols on the internet.
Full form transmission control protocol/Internet protocol
HHTP-is the protocol for the World Wide Web. The client/server protocol that defines how messages are formatted and transmitted on the World Wide Web
Full Form: HyperText Transfer Protocol
Smtp – is the internet mail transfer protocol. The mail protocol used to send emails on the internet. It consists of rules for how programs sending mail should interact with programs receiving mail/
Full form Simple Mail Transfer Protocol
FTP – is the standard protocol for transferring files. A standard procedure that allows on computer to transfer files to and form another computer over a network like the internet.
Full form file transfer protocol
3. What does GUI stand for? What was used before GUI?
GUI – is Graphical User Interface. . is a type of user interface which allows the user to interact with computer. Unlike a traditional interface GUI presents graphical icons, visual devices or special graphical elements known as widgets. These are much easier to use unlike in traditional interface where the user has to type in specific commands to open up information to do to any simple processing.
4. There are two methods of data transmission – serial and parallel. Explain the difference between them.
In Serial Transmission bits are sent over a single wire individually. While one bit is sent at a time high transfer rates are possible. This can be used over long distance.
In Parallel Transmission multiple wires are used in which it can transfer multiple bits simultaneously, which allows higher data transfer rates that can be achieved with serial transmission. This method is used internally within the computer, for example the internal buses, and sometimes externally for such things as printers
5. Define the term “URL”. Explain the components that make up the url.
URL – mean Uniform Resource Locator. It is the global address of documents and the other resources on the World Wide Web.
The first part of the address is called a protocol identifier and it indicates what protocol to use. The second part is called a resource name and it specifies the IP address or the domain name where the resource is located. The protocol identifier and the resource name are separated by a colon and two forward slashes.
6. In the context of data transmission, what is “error detection”?
In data transmission “error detection is the ability to detect the presence of errors caused by noise or other impairments during transmission from the transmitter to the receiver.
7. Name and explain one common method of error detection.
Two of the simplest and most common techniques are called checksum and CRC. More sophisticated strategies include MNP and CCITT V.42.
