Chater 1 definitions Flashcards
To know the definitions of the concepts in Datacommunication
1
Q
Data payload
A
Information conveyed
2
Q
Packet
A
Data unit switched and transmitted on network
3
Q
Header
A
Information segment added before data payload
4
Q
Tail
A
Information segment added after data payload
5
Q
Encapsulation
A
Process of adding header and tail to form a new packet
6
Q
Decapsulation
A
Process of removing header and tail from packet to obtain payload
7
Q
Gateway
A
Network device providing functions such as protocol conversion, route selection and data exchange
8
Q
Router
A
Network device selects a forwarding path for packets
9
Q
Terminal device
A
End device of data comm system, which sends or receives data
