Question

1. What is the PDU for Data Link layer?
   1. Messages
   2. Bits
   3. Frames
   4. Segments
2. Coaxial cable transmits shorter distances than UTP
   1. True
   2. False
3. VLAN is used for physical segmentation
   1. True
   2. False
4. Which of the following are the functions of network layer (Select three of them)?
   1. Encapsulation the PDU of network layer
   2. Packetizing
   3. Provides the delivery of packet service based on source and destination IP
   4. Ensure the process-to-process delivery
5. Which of the following is not a data link layer devices? (Select two of them)?
   1. Router
   2. Switch
   3. Bridge
   4. Gateway

Answer 1

PDU for data link layer is the frame

PDU for network layer is packet

PDU for transport layer is datagram

PDU for physical layer is bit

2. coaxial cables can be used for longer distances

so , answer is false

3. VLAN's is used for physical segmentation :TRUE

4.  functions of network layer:(options A,B,C)

1. Encapsulation the PDU of network layer
2. Packetizing
3. Provides the delivery of packet service based on source and destination IP
4. Ensure the process-to-process delivery(functionality of transport layer)

5.Which of the following is not a data link layer devices:(option A,D)

A. Router(network layer device)

D.Gateway (transport layer device)