COMMS Internet Q & A
COMMS: The Internet
Qs & As
A network technology in which the message is broken up into packets,
each labelled and coded to indicate the sender and receiver
2. Who
decides how the packets will be sent?
Data packets are sent along the best available network by the router
Data packets are sent along the best available network by the router
3. What
are the advantages of packet-switching?
Enables large streams of data to be broken up into smaller manageable c
hunks and each sent by the best available route (to be reassembled at the destination
Enables large streams of data to be broken up into smaller manageable c
hunks and each sent by the best available route (to be reassembled at the destination
4. What is the danger, and at the same
time, the protection of sending by packets?
Risk of hacking; hacker unable to know all the route that the packets are being sent
_______________________________________________________________
Risk of hacking; hacker unable to know all the route that the packets are being sent
_______________________________________________________________
Transmission Control Protocol / Internet Protocol
6. What
is a Transmission Control Protocol?
A transmission protocol is a statement that explains how a specific networking task,
such as the transmission of data, should be performed
A transmission protocol is a statement that explains how a specific networking task,
such as the transmission of data, should be performed
7. How
does the TCP/IP manage the communication process?
It divides the process into 5 networking tasks:
1. Application: The closest layer to the network user provides data entry and
functionality to the end user
2. Transport: this layer breaks the communication up into packets which contains
the address of the sender, data for reassembling the message and error-
checking device
3. Internet Protocol: this layer receives diagrams from the TCP layer and breaks the
packets down further. The IP packet contains a header with an address and carries
the data in the body of the packet
4. Network: this handles addressing issues within the operating system as well as
providing an interface between the computer and the network. Each device on a
network has a unique identifier (an IP number)
5. Physical: this layer defines the basic characteristics of signal transmission along
communication networks
__________________________________________________________________
It divides the process into 5 networking tasks:
1. Application: The closest layer to the network user provides data entry and
functionality to the end user
2. Transport: this layer breaks the communication up into packets which contains
the address of the sender, data for reassembling the message and error-
checking device
3. Internet Protocol: this layer receives diagrams from the TCP layer and breaks the
packets down further. The IP packet contains a header with an address and carries
the data in the body of the packet
4. Network: this handles addressing issues within the operating system as well as
providing an interface between the computer and the network. Each device on a
network has a unique identifier (an IP number)
5. Physical: this layer defines the basic characteristics of signal transmission along
communication networks
__________________________________________________________________
8. What are FTP and HTTP?
Read B-D and watch: https://www.youtube.com/watch?v=7LfTWbOp5vU
They are both communication protocols, like TCP/IP. They are used to
transfer files, e-mail and web applications on the Internet.
FTP means File Transfer Protocol and it enables the transfer of files between
computers
Read B-D and watch: https://www.youtube.com/watch?v=7LfTWbOp5vU
They are both communication protocols, like TCP/IP. They are used to
transfer files, e-mail and web applications on the Internet.
FTP means File Transfer Protocol and it enables the transfer of files between
computers
HTTP means Hypertext Transfer Protocol and defines
how information
can be transmitted between web clients and web servers in a network
can be transmitted between web clients and web servers in a network
9. And
what does SMTP do?
Read B-D and watch: https://www.youtube.com/watch?v=j7kMZD81hec
SMTP means Simple mail Transfer Protocol and enables mail transfer
between computers
Read B-D and watch: https://www.youtube.com/watch?v=j7kMZD81hec
SMTP means Simple mail Transfer Protocol and enables mail transfer
between computers
10.
What is an IP Address?
Read B-D and watch: https://www.youtube.com/watch?v=7_-qWlvQQtY
An IP address is a unique identification for a computer on the internet
Read B-D and watch: https://www.youtube.com/watch?v=7_-qWlvQQtY
An IP address is a unique identification for a computer on the internet
11.
How is an IP address constructed?
It is constructed as a series of up to 4 numbers each separated by
a full stop (or point), eg 126.203.97.54
In a 32-bit IP address each of the 4 numbers can range from 0-255
The first 4 numbers identify a computer network
The remaining numbers identify a node on this network
__________________________________________________________________
It is constructed as a series of up to 4 numbers each separated by
a full stop (or point), eg 126.203.97.54
In a 32-bit IP address each of the 4 numbers can range from 0-255
The first 4 numbers identify a computer network
The remaining numbers identify a node on this network
__________________________________________________________________
Comments
Post a Comment