Network review

A data communications system has …......….. main components

• 3

• 4

• 5

• 6

………....…… is a set of rules that both the sender and receiver and all intermediate devices need to follow to be able to communicate effectively.

• • Code

• • Sender

• • Receiver

• • Protocol

In simplex mode, the communication is:

• • Bidirectional

• • Unidirectional

• • Monodirectional

In ……….. topology, every device has a dedicated point-to-point link to every other device.

• • Star topology

• • Bus topology

• • Mesh topology

………….. created and run by communication companies and leased by an organization that uses it.

• • LAN

• • MAN

• • WAN

in ………….. a dedicated connection, is always available between the two end systems.

• • Circuit-switched network

• • Packet-switched network

TCP/IP protocol has:

• • 4 layers 

• • 5 layers

• • 6 layers

• • 7 layers 

The data send in the network layer called:

• • Frame

• • Bits

• • Datagram

• • Segment

The address in Datalink layer is:

• • Physical address 

• • Logical address 

• • Port number

in the OSI model, ………… layer carries out flow control, sending data at a rate that matches the connection speed of the receiving device, and error control, checking if data was received incorrectly and if not, requesting it again.

• • Datalink layer

• •  Network layer 

• Transport layer

• • Application layer