advanced Routing and switching

Deliverable Length:4–5 pages

The OSI Layer 3 (Network Layer) is one of the layers that perform packet segmentation. The

OSI Layer 3 is roughly equivalent to the Internet Layer of the TCP/IP model and the Layer 4

(Transport Layer) of the OSI model is roughly equivalent to the Host

-

to

-

H

ost layer of the

TCP/IP model. The above two layers perform network segmentation. Based on the above

information, answer the following questions.

(a) Describe in detail how packets are segmented by the Host

-

to

-

host layer (Transport Layer)

Internet Layer of

the TCP/IP model.

(b) Do all packets arrive at their destination in the order in which they were segmented and

transmitted? Why or why not?

(c) Describe how segmented packets are re

-

arranged or reassembled at the packets’

destination to ensure that rece

ived segmented packets match the order in which they were

segmented and transmitted.

(d) How are errors handled during transmission of segmented packets?

(e) What's the difference between a TCP segment and a TCP packet?