Question

a)

This chapter ("data plane") is all about forwarding packets at a router. Check all the statements that apply to Forwarding: Forwarding tables are computed by the control plane, in software. Forwarding tables are typically stored at every input port of a router. Forwarding tables are typically stored at every output port of a router. Forwarding tables are stored in the switching fabric. Destination-based forwarding means that we use the destination address of an IP datagram, to look up the output port in the forwarding table. Forwarding tables are stored in the data plane, in hardware, and looked up in real-time.

b)

c)

Answer 1

a)

Ans: i)Destination-based forwording means that we use the destination address of an IP datagram ,to look up the output port in the forwording table.

ii) forwording tables are computed by the control plane ,in software.

iii) forwording tables are stored in every output port of a router

b)

i) the control plane performs routing i.e. it finds the best systems between end system

ii)The data plane performs forwording i.e.it inspects incoming packets and decides which output port to send them to.

iii)routing dictates/configures the forwording table installed on all the routers.

c)

i)TCP provides reliability through retransmission.

ii)TCP provides the congestion control by adapting the sending window.