What does redundancy mean in the context of internet routing?

a - multiple paths exist between any two points.
b - for any two points on the internet, there exists only one path between them.
c - data sent over the internet is sent to the router with the lowest cost.
d - if a single router on a network breaks, the entire network fails.

Option D is the correct answer to this question.

Explanation:

The redundancy in the internet routing is most important in many terms:

It is true that if  a single router on a network breaks, the entire network fails because the redundancy makes the network strong to receive and send the packets from source to the destination.Breaking of any single router can results to the entire failure of network and it fails to send the packets to the destination.Redundancy helps in making an internet more reliable and send or forward the data packets from the source to destination.

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Cprogram to find //perimeter of rectangle printf(" \n perimeter of rectangle \n"); printf(""); printf("\n enter width and length of the rectangle : "); scanf("%f%f", & width,& length); perimeter = 2 * (width + length); printf("perimeter of rectangle is: %.3f", perimeter);