“Do I Know This Already?” Quiz – Fundamentals of Ethernet LANs – 200-301 Study Guide

“Do I Know This Already?” Quiz

Take the quiz (either here or use the PTP software) if you want to use the score to help you decide how much time to spend on this chapter. The letter answers are listed at the bottom of the page following the quiz. Appendix C, found both at the end of the book as well as on the companion website, includes both the answers and explanations. You can also find both answers and explanations in the PTP testing software.

Table 2-1 “Do I Know This Already?” Foundation Topics Section-to-Question Mapping

Foundation Topics SectionQuestions
An Overview of LANs1–2
Building Physical Ethernet LANs with UTP3–4
Building Physical Ethernet LANs with Fiber5
Sending Data in Ethernet Networks6–9

1. Some end-user devices connect to a LAN using a cable while others use wireless. Which answer best characterizes which devices use Ethernet to connect to the LAN?

  1. Only the end-user devices that use cables are using Ethernet.
  2. Only the end-user devices that use wireless are using Ethernet.
  3. Both the end-user devices using cables and those using wireless are using Ethernet.
  4. Neither the end-user devices using cables nor those using wireless are using Ethernet.

2. Which of the following Ethernet standards defines Gigabit Ethernet over UTP cabling?

  1. 10GBASE-T
  2. 100BASE-T
  3. 1000BASE-T
  4. None of the other answers are correct.

3. Which of the following is true about Ethernet crossover cables for Fast Ethernet?

  1. Pins 1 and 2 are reversed on the other end of the cable.
  2. Pins 1 and 2 on one end of the cable connect to pins 3 and 6 on the other end of the cable.
  3. Pins 1 and 2 on one end of the cable connect to pins 3 and 4 on the other end of the cable.
  4. The cable can be up to 1000 meters long to cross over between buildings.
  5. None of the other answers are correct.

4. Each answer lists two types of devices used in a 100BASE-T network. If these devices were connected with UTP Ethernet cables, which pairs of devices would require a straight-through cable? (Choose three answers.)

  1. PC and router
  2. PC and switch
  3. Hub and switch
  4. Router and hub
  5. Wireless access point (Ethernet port) and switch

5. Which of the following are advantages of using multimode fiber for an Ethernet link instead of UTP or single-mode fiber? (Choose two answers.)

  1. To achieve the longest distance possible for that single link.
  2. To extend the link beyond 100 meters while keeping initial costs as low as possible.
  3. To make use of an existing stock of laser-based SFP/SFP+ modules.
  4. To make use of an existing stock of LED-based SFP/SFP+ modules.

6. Which of the following is true about the CSMA/CD algorithm?

  1. The algorithm never allows collisions to occur.
  2. Collisions can happen, but the algorithm defines how the computers should notice a collision and how to recover.
  3. The algorithm works with only two devices on the same Ethernet.
  4. None of the other answers are correct.

7. Which of the following is true about the Ethernet FCS field?

  1. Ethernet uses FCS for error recovery.
  2. It is 2 bytes long.
  3. It resides in the Ethernet trailer, not the Ethernet header.
  4. It is used for encryption.

8. Which of the following are true about the format of Ethernet addresses? (Choose three answers.)

  1. Each manufacturer puts a unique OUI code into the first 2 bytes of the address.
  2. Each manufacturer puts a unique OUI code into the first 3 bytes of the address.
  3. Each manufacturer puts a unique OUI code into the first half of the address.
  4. The part of the address that holds the manufacturer’s code is called the MAC.
  5. The part of the address that holds the manufacturer’s code is called the OUI.
  6. The part of the address that holds the manufacturer’s code has no specific name.

9. Which of the following terms describe Ethernet addresses that can be used to send one frame that is delivered to multiple devices on the LAN? (Choose two answers.)

  1. Burned-in address
  2. Unicast address
  3. Broadcast address
  4. Multicast address

Answers to the “Do I Know This Already?” quiz:

1 A

2 C

3 B

4 B, D, and E

5 B and D

6 B

7 C

8 B, C, and E

9 C and D