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CCNP Routing and Switching SWITCH 300-115 Official Cert Guide: Switch Port Configuration

This chapter from CCNP Routing and Switching SWITCH 300-115 Official Cert Guide presents the various Ethernet network technologies used to establish switched connections within the campus network and also details the switch commands required for configuring and troubleshooting Ethernet LAN ports.
This chapter is from the book

This chapter covers the following topics that you need to master for the CCNP SWITCH exam:

  • Ethernet Concepts: This section discusses the concepts and technology behind various forms of Ethernet media.
  • Connecting Switches and Devices: This section discusses the physical cabling and connectivity used with Catalyst switches.
  • Switch Port Configuration: This section covers the configuration steps and commands needed to use Ethernet, Fast Ethernet, and Gigabit and 10-Gigabit Ethernet switch ports in a network.
  • Discovering Connected Devices: This section explains the protocols that can be used to automatically discover other devices that are connected to a Catalyst switch.
  • Using Power over Ethernet: This section discusses how a Catalyst switch can provide power to operate devices such as wireless access points and Cisco IP phones.

This chapter presents the various Ethernet network technologies used to establish switched connections within the campus network. You can connect a switch to an end device such as a PC or to another switch. The chapter also details the switch commands required for configuring and troubleshooting Ethernet LAN ports.

“Do I Know This Already?” Quiz

The “Do I Know This Already?” quiz allows you to assess whether you should read this entire chapter thoroughly or jump to the “Exam Preparation Tasks” section. If you are in doubt based on your answers to these questions or your own assessment of your knowledge of the topics, read the entire chapter. Table 3-1 outlines the major headings in this chapter and the “Do I Know This Already?” quiz questions that go with them. You can find the answers in Appendix A, “Answers to the ‘Do I Know This Already?’ Quizzes.”

Table 3-1 “Do I Know This Already?” Foundation Topics Section-to-Question Mapping

Foundation Topics Section

Questions Covered in This Section

Ethernet Concepts

1-6

Connecting Switches and Devices

7

Switch Port Configuration

8-10

Discovering Connected Devices

11-12

Using Power over Ethernet

13-14

  1. What does the IEEE 802.3 standard define?

    1. Spanning Tree Protocol
    2. Token Ring
    3. Ethernet
    4. Switched Ethernet
  2. At what layer are traditional 10-Mbps Ethernet, Fast Ethernet, and Gigabit Ethernet the same?

    1. Layer 1
    2. Layer 2
    3. Layer 3
    4. Layer 4
  3. At what layer are traditional 10-Mbps Ethernet, Fast Ethernet, and Gigabit Ethernet different?

    1. Layer 1
    2. Layer 2
    3. Layer 3
    4. Layer 4
  4. What is the maximum cable distance for an Ethernet, Fast Ethernet, and Gigabit Ethernet connection over unshielded twisted pair cabling?

    1. 100 feet
    2. 100 m
    3. 328 m
    4. 500 m
  5. Ethernet autonegotiation determines which of the following?

    1. Spanning-tree mode
    2. Duplex mode
    3. Quality of service mode
    4. MAC address learning
    5. Device discovery
  6. Which of the following cannot be automatically determined and set if the far end of a connection does not support autonegotiation?

    1. Link speed
    2. Link duplex mode
    3. Link media type
    4. MAC address
  7. Which of these is not a standard type of gigabit interface converter (GBIC) or small form factor pluggable (SFP) module?

    1. 1000BASE-LX/LH
    2. 1000BASE-T
    3. 1000BASE-FX
    4. 1000BASE-ZX
  8. Assume that you have just entered the configure terminal command. You want to configure the speed and duplex of the first 10/100/1000 twisted-pair Ethernet interface on the first Cisco Catalyst switch stack member to 1-Gbps full-duplex mode. Which one of these commands should you enter first?

    1. speed 1000 mbps
    2. speed 1000
    3. interface gigabitethernet 1/0/1
    4. interface gigabit ethernet 1/0/1
    5. duplex full
  9. If a switch port is in the errdisable state, what is the first thing you should do?

    1. Reload the switch.
    2. Use the clear errdisable port command.
    3. Use the shut and no shut interface-configuration commands.
    4. Determine the cause of the problem.
  10. Which of the following show interface output information can you use to diagnose a switch port problem?

    1. Port state
    2. Port speed
    3. Input errors
    4. Collisions
    5. All answers are correct
  11. Which one of the following is a standards-based protocol that can be used to discover and collect information about connected devices?

    1. CDP
    2. STP
    3. ICMP
    4. LLDP
  12. Which one of the following statements is true about a Catalyst switch?

    1. Neither CDP nor LLDP are enabled by default.
    2. CDP is enabled and LLDP is disabled by default.
    3. CDP is disabled and LLDP is enabled by default.
    4. Both CDP and LLDP are enabled by default.
  13. For a Catalyst switch to offer Power over Ethernet to a device, what must occur?

    1. Nothing; power always is enabled on a port.
    2. The switch must detect that the device needs inline power.
    3. The device must send a CDP message asking for power.
    4. The device must send an LLDP message asking for power.
    5. The switch is configured to turn on power to the port.
  14. Which one of these commands can enable Power over Ethernet to a switch interface?

    1. inline power enable
    2. inline power on
    3. power inline on
    4. power inline auto
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