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Q&A 241

Q&A

The questions and scenarios in this book are more difficult than what you will experience on
the actual exam. The questions do not attempt to cover more breadth or depth than the exam;
however, they are designed to make sure that you know the answer. Rather than enabling you
to derive the answer from clues hidden inside the question itself, the questions challenge your
understanding and recall of the subject.

Questions from the "Do I Know This Already?" quiz from the beginning of the chapter are
repeated here to ensure that you have mastered the chapter's topic areas. Hopefully, these
questions will help you limit the number of exam questions on which you narrow your choices
to two options and then guess.

The answers to these questions can be found in Appendix A, on page 397.

Name the Layer 2 of X.25.

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Name the Layer 3 of X.25.

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In X.25, what are the two possible roles that a router can play?

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What is the function of a PAD in an X.25 network?

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The addressing scheme in X.25 is known as what kind of address?

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