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?

Question

Options

• ARouting delay
• BBandwidth
• CLoad
• DPath length

• A
  94% (49)
• B
  4% (2)
• D
  2% (1)

Explanation

Routing delay (A) is correct because it is defined specifically as the time required to move a packet from source to destination across an internetwork - it measures latency across the entire path, including propagation, queuing, and processing delays.

Bandwidth (B) refers to the maximum data capacity of a link (bits per second), not time in transit. Load (C) measures how busy a router or link is (traffic utilization), which can affect delay but is not itself a time measurement. Path length (D) counts the number of hops (routers) between source and destination - it measures distance in network hops, not time.

Memory tip: "Delay = time" - if a metric question mentions time or latency, think delay. The word "delay" itself implies waiting, which maps directly to time elapsed during packet transit.

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