When a Layer 3 Switch Forwards IP Packets Between Locally

question 127

Multiple Choice

When a Layer 3 switch forwards IP packets between locally attached VLANs, which of the following fields is rewritten?

• A) Layer 2 TTL
• B) Layer 3 transport protocol
• C) Layer 3 destination IP address
• D) Layer 3 source IP address
• E) Layer 3 TTL

---

Definitions:

Discrete Random Variable

A variable that can take on a countable number of distinct and separate values, often used in probability and statistics.

Probability Distribution

A statistical function that describes all the possible values and likelihoods that a random variable can take within a given range.

Expected Value

The long-run average value of repetitions of the experiment it represents, computed as the weighted average of all possible values.

Poisson Random Variable

Represents the number of events occurring in a fixed interval of time or space, assuming that these events happen with a known constant mean rate and independently of the time since the last event.