Which of the following routing metrics refers to the length of time that is required to move a packet
from source to destination through the internetwork?

A.
Routing delay

B.
Bandwidth

C.
Load

D.
Path length

Explanation:

Routing delay refers to the length of time that is required to move a packet from source to
destination through the internetwork. Delay depends on many factors, including the following:
Bandwidth of intermediate network links
Port queues at each router along the way
Network congestion on all intermediate network links
Physical distance to be traveled
Since delay is a conglomeration of several important variables, it is a common and useful metric.
Answer option D is incorrect. Path length is defined as the sum of the costs associated with each
link traversed.
Answer option B is incorrect. Bandwidth refers to the available traffic capacity of a link.
Answer option C is incorrect. Load refers to the degree to which a network resource, such as a
router, is busy.