Family name and Name:

EVALUATON OF THEORETICAL AND PRACTICAL QUESTIONS $($S$2$ AND S$3-30\%$ OR $70\%$

$...............$

QUESTIONNARIE $(4\mathrm{.}0$ points$)$

Mark with $x$ the correct answer. $($Corect: $0\mathrm{.}2$ points, three mistaken or mecompleted questions:$--0\mathrm{.}2$ points, not answeret: $0$ point$).$ You should consider that there can be more than one vald, answer.

$1\mathrm{.}1$ Videoconference services are featured with a traffic of type: $$ Elastic, interactive, of high availability and asymmetric. E

IInelastic, interactive, of high availability and asymmetric. IInelastic, interactive, of high availability and symmetric. $$Elastic$,$ no interactive, of high availability and symmetric.

$1\mathrm{.}2$ The congestion control carried out with the use of WRED $($Weighted Random Early Detect$)$ allows: $$ setting a service priority based on an equitable distribution of bandwith

managing a queue, based on streams, with the goal of organizing the traffic, didscardin the last packets shat have arrived. discarding traffic on a random way when certain treffic

$1\mathrm{.}3$ The resources management of IntServ $($Integrated Services$)$ is featured by: $$ Each router in the route makes the reservation of the requested reso

G Each router in the route makes the reservation of the requested resources. The packets marking in the edge routers with a particular level of priority

Demanding a reservation through RSVP and at the level of streams. Having the following per hop behaviours: Expedited Forwarding, Guaranteed Forwarding and Best Effort.

$1\mathrm{.}4$ The resource management mechanism DiffServ $($Differenciated Services$)$ is featured by: $$ the association to each traffic class $($DSCP$)$ of a per hop behaviour $($PHB$).$ the core routers performing the traffic marking that guides the resource reservation mechanism.

$$ the core routers performing the traffic marking that guides the resource reservation performing the resource eresevation at the level of traffic streas. the use of RSVP to perform the resource reservation at the level of traffic streams.

$1\mathrm{.}5$ The codec for multimedia content:; $$ MPEG$-4$ allows the transmission of videoconference with low delay and high efficiency. G$.711$ is an audio codec without compression.

G G$\mathrm{.}711$ is an audio codec without compression. G$\mathrm{.}729$ is used just for transmitting voice in LAN networks. M$-$JPEG exhibits a high compression rate.

$1\mathrm{.}14$ IPT

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$19$ What is the $$The i The d

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SHORT QUESTIONS $(6\mathrm{.}0$ points$)$

Explain the concept "Net neutrality". You should also define the techniques of classification and traffic shaping giving examples of their implementation. $(1$ point$)$

Briefly describe the following protocols and their main features. You should also specify for each of them a possible communication scenario$($ a scheme with the primitives exchange$)(1$ pto$)$:

a$)$ a$)$ SDP$.$ b$)$ SIP $($stomis

Explaing, giving examples, some of the protocols used to allow the content distribution through multicast. You should aslo indicate what is represented by the following diagrams: