Encapsulation And Ethernet Frame

Question 1

What is the maximum size of a Ethernet frame?

Answer 1

1518 bytes ( x8 for bits)

Question 2

What is the minimum size of a frame ?

Answer 2

64 bytes (x8 for bits)

Question 3

What is a preamble and how many bytes is it in a frame ?

Answer 3

Get in Sync the NiC card with the bits coming from the network media. 7 bytes

Question 4

What is the start frame delimiter and how many bytes is it in the Ethernet frame?

Answer 4

Informs that after that point of the frame begins the actual data associated with that Ethernet frame. 1 byte

Question 5

What many bytes is the destination and source MAC address in the Ethernet frame?

Answer 5

6 bytes

Question 6

What is the length type field of the Ethernet frame and how many bytes is it within the frame?

Answer 6

It informs the length of the data in the data part of the frame(which is the next section of the frame) or the type of data like IPv4 packet or IPv6 packet. 2 bytes

Question 7

What is the data part of the Ethernet frame and how many bytes is it?

Answer 7

It is all the protocols of the actual data. For example; the IPv4 packet with the TCP header and the HTTP header. Whatever information has been encapsulated. 46 - 1500 bytes

Question 8

What is the FCS (frame check sequence) in the Ethernet frame and how many bytes?

Answer 8

It checks there were no error along the frame. 4 bytes

Question 9

The Ethernet frame is at what layer of the OSI model?

Answer 9

Layer 2 data link layer

Question 10

What is ARP?

Answer 10

Address Resolution Protocol.
When the PC sending the data packet has the IPV4 address but not the MAC address to send the packet to a PC on the same network. The switch broadcasts a ARP request to get the MAC address of the recipient PC and give it to the Sender PC so that the sender PC can encapsulate its data packet with the destination MAC address

Question 11

Does Ethernet frame use source or destination MAC address to build its address table?

Answer 11

Source