Question

The total nodal delay is given by ____________

(a) dnodal = dproc – dqueue + dtrans + dprop

(b) dnodal = dproc + dtrans – dqueue

(c) dnodal = dproc + dqueue + dtrans + dprop

(d) dnodal = dproc + dqueue – dtrans – dprop

I got this question during an interview.

Asked question is from Delays and Loss in portion Security & Physical Layer of Computer Network

Answer 1

The correct choice is (c) dnodal = dproc + dqueue + dtrans + dprop

For explanation I would say: The total node-to-node delay, that is, nodal delay is the sum of all, the processing delay, queuing delay, transmission delay and propagation delay. Ideally, the nodal delay must be low as possible for a better Quality of Service of the network.