General Instructions

$1.$ Read ALL instructions carefully and thoroughly before answering this exam. $2.$ Write in ballpen ink, the final answers in the space provided. Answers not written in ink will not be considered.

$3.$ Write legibly. No credit will be given for messy and$/$or ambiguous answers.

$4.$ Cheating in any form during an examination is considered a major offense and automatically warrants a final grade of $0\mathrm{.}0.$

$5.$ Use the answer sheet to write your answers.

$1.$ Spiral Review $(5$ pts$)$

Source

Message M

Segment H$,$ M

Datagram M

$2344$

Application

Frame H H H M

Transport

Network

Link

Physical

Five$-$layer Internet

protocol stack

Destination

Router

$54321$

$1-1.$ What layer in the TCP$/$IP stack best corresponds to the phrase: 'moves datagrams from the source host to the

destination host'? $1-2.$ What layer in the TCP$/$IP stack best corresponds to the phrase: 'handles the delivery of segments from the application layer, may be reliable or unreliable'?

$1-3.$ What layer in the TCP$/$IP stack best corresponds to the phrase: 'passes frames from one node to another across some medium'?

$1-4.$ What layer corresponds to box $7?$

$1-5.$ What layer corresponds to box $10?$