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CCIE Security Exam Certification Guide by Henry Benjamin

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Chapter 2 “Do I Know This Already?” Quiz Answers

1: Which layer of the OSI model is responsible for converting frames into bits and bits into frames?
  1. Physical

  2. Network

  3. Transport

  4. LLC sublayer

  5. Data Link

A1: Answer: e

The data link layer performs bit conversion to pass to the MAC sublayer.

2: Routing occurs at what layer of the OSI model?
  1. Physical

  2. Network

  3. Transport

  4. LLC sublayer

  5. Data link

A2: Answer: b

Routing is a Layer 3 (network layer) function.

3: Bridging occurs at what layer of the OSI model?
  1. Physical

  2. Network

  3. Transport

  4. Data link

A3: Answer: d

The data link layer is where bridging is performed.

4: Which of the following is not part of the OSI model?
  1. Network layer

  2. Physical layer

  3. Operational layer

  4. Application layer

A4: Answer: c

The operational layer is not one of the ...

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